TWI567177B - Liquid crystal composition, and liquid crystal display element using the same - Google Patents

Description

Liquid crystal composition and liquid crystal display element using same

The present invention relates to a nematic liquid crystal composition having a positive dielectric anisotropy (Δε) as a liquid crystal display material and a liquid crystal display element using the same.

Headsets and computers are used, and liquid crystal display elements have been used in various measuring machines, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertising displays, and the like. The representative of the liquid crystal display method is TN (twisted nematic) type, STN (supper twisted nematic) type, and TFT (film transistor). Vertical alignment type or IPS (in-plane switching) type. The liquid crystal composition used for these liquid crystal display elements is stable to external stimuli such as moisture, air, heat, light, etc., and is intended to display a liquid crystal phase at a temperature range as wide as possible centering on a room temperature. It is low viscosity and the driving voltage is low. Further, in order to make dielectric anisotropy (Δε) and/or refractive index anisotropy (Δn) and the like suitable for each display element, liquid crystal compositions are composed of several types to tens of types of compounds. Things.

A liquid crystal composition having a negative Δε is used in a vertical alignment (VA) type display, and Δε is used in a horizontal alignment type display such as a TN type, an STN type, or an IPS (in-plane switching type). Positive liquid crystal composition. Further, the liquid crystal composition having positive Δ ε is vertically aligned when no voltage is applied, and the driving mode displayed when a transverse electric field is applied is also reported, and the necessity of a liquid crystal composition having positive Δ ε is further improved. . On the other hand, in all driving methods, low-voltage driving, high-speed reaction, and a wide operating temperature range are being sought. That is, Δε is positive and the absolute value is large, the viscosity (η) is small, and the high nematic phase-isotropic liquid phase transition temperature (Tni) is required. Further, in order to set Δn × d of the product of Δn and the cell gap (d) to a predetermined value, it is necessary to adjust the Δn synergistic cell gap of the liquid crystal composition to an appropriate range. Further, when a liquid crystal display element is applied to a television or the like, since a high-speed reactivity is emphasized, a liquid crystal composition having a small rotational viscosity (γ ₁ ) is required.

In the composition of the liquid crystal composition which is aimed at high-speed reactivity, for example, a compound represented by the formula (A-1) or (A-2) in which a liquid crystal compound having a positive Δ ε is combined is disclosed, and Δε is in the middle. Liquid crystal composition (B) used for the liquid crystal compound. In view of the characteristics of the liquid crystal composition, a liquid crystal compound having a positive Δ ε has a -CF ₂ O-structure, or a liquid crystal compound having a negative Δ ε has an alkenyl group, and is widely known in the field of liquid crystal compositions (Patent Literature) 1~4).

On the other hand, the use of the liquid crystal display element has been expanded, and the method of use and the method of manufacture have also seen great changes. In order to cope with such changes, it has been requested to optimize characteristics other than the basic physical property values known as the conventional ones. In other words, a liquid crystal display device using a liquid crystal composition is widely used in a VA type or an IPS type, and the size thereof is also practically used in a display device of a very large size of 50 or more. With the increase in the size of the substrate, the method of injecting the liquid crystal composition into the substrate is also the mainstream of the injection method from the conventional vacuum injection method to the ODF (One Drop Fill) method. However, the problem that the dripping trace of the liquid crystal composition is dropped onto the substrate causes the display quality to deteriorate and the surface is floated.

Further, regarding the manufacturing step of the liquid crystal display element by the ODF method, it is necessary to drip the optimum liquid crystal injection amount in accordance with the size of the liquid crystal display element. When the deviation of the injection amount is largely deviated from the optimum value, the balance of the refractive index or the driving electric field of the liquid crystal display element designed in advance may be collapsed, and display defects such as spot occurrence or poor contrast may occur. Especially, mostly used In order to make the most suitable liquid crystal injection amount small, it is difficult to control the deviation of the optimum value within a certain range in the small liquid crystal display element of the recently popular smart phone. Therefore, in order to maintain the high yield of the liquid crystal display element, the liquid crystal composition is required to have a small influence on the rapid pressure change or the pulsation in the dropping device generated when the liquid crystal is dropped, and the liquid crystal can be continuously dripped over a long period of time. .

In the liquid crystal composition used in the active matrix driving liquid crystal display device driven by the TFT element or the like, in consideration of the manufacturing method of the liquid crystal display element, the high-speed reaction performance and high ratio demanded by the liquid crystal display element are being pursued. Development of resistance values, high voltage holding ratios, or improvements in external stimuli such as light or heat.

Prior technical literature Patent literature

Patent Document 1 JP-A-2008-037918

Patent Document 2, JP-A-2008-038018

Patent Document 3, JP-A-2010-275390

Patent Document 4 Special Opening 2011-052120

[Summary of the Invention]

The problem to be solved by the present invention is to provide a liquid crystal composition having a positive Δ ε, which has a liquid crystal phase in a wide temperature range, low viscosity, good solubility at low temperatures, high specific resistance or voltage retention, and heat or light. A stable liquid crystal composition that is further used to provide a good yield A liquid crystal display element which suppresses image retention or an excellent display quality due to poor display such as dropping marks, and a liquid crystal display element using the liquid crystal composition.

The present invention encompasses the following aspects.

(1) A liquid crystal composition comprising a liquid crystal composition having positive dielectric anisotropy, which is characterized by containing a compound represented by the following formula (i), and at least one of the following formula (ii) Compound represented,

In the above formula (ii), R ⁱⁱ¹ and R ⁱⁱ² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms, and X ⁱⁱ¹ and X ⁱⁱ² each independently represent a hydrogen atom or a fluorine atom.

(2) The liquid crystal composition according to the above (1), wherein one of the above formula (ii), X ⁱⁱ¹ and X ⁱⁱ² represents a hydrogen atom, and the other represents a fluorine atom.

(3) The liquid crystal composition according to the above (2), which contains at least one of the above-described general formula (ii) in an amount of 0.5% by mass or more and less than 5% by mass based on the total mass of the liquid crystal composition. Compound At least one compound selected from the group consisting of a compound represented by the following formula (ii.2.1) and a compound represented by the following formula (ii.2.2).

(4) The liquid crystal composition according to the above (2) or (3), which contains at least one compound represented by the following formula (ii.1.3) which is a compound represented by the above formula (ii).

The liquid crystal composition according to any one of the above-mentioned items (2) to (4), which contains at least one compound represented by the above formula (ii) and is selected from the following formula (ii.2.9). And a compound of at least one of the compound represented by the compound represented by the following formula (ii.2.10).

The liquid crystal composition according to any one of the above-mentioned items (1) to (5), further comprising at least one compound represented by the following formula (L).

In the above formula (L), R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two non-adjacent-CH ₂ - groups may be independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, OL means 0, 1, 2 or 3, B ^L1 , B ^L2 and B ^L3 are each independently represented a group selected from the group consisting of: (a) 1,4-cyclohexylene (one of -CH ₂ - present in the group or at least two of -CH ₂ - which are not contiguous may be substituted - O-), and (b) 1,4-phenylene (one of -CH= or at least two of which are not adjacent to this group -CH= may be substituted with -N=), the above group (a) and (b) are each independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C =C-, OL is 2 or 3 and L ^L2 is a plurality of cases. They may be the same or different, OL is 2 or 3 and B ^L3 is a plurality of cases, they may be The same may be different, except for the compound represented by the above formula (ii).

The liquid crystal composition according to any one of the above aspects (1), further comprising at least one compound represented by the following formula (M).

In the above formula (M), R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two of -CH ₂ - which are not adjacent to each other may be independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of The base: (d) 1,4-cyclohexylene (the one present in this group -CH ₂ - or the non-contiguous at least 2 -CH ₂ - may be substituted with -O- or -S-) And (e) 1,4-phenylene (the one present in the group -CH= or at least two of the non-contiguous -CH= may be substituted with -N=), the above-mentioned group (d) And the group (e) are each independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ - , -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^M1 is a plurality of cases. They may be the same or different, PM is 2, 3 or 4 and C ^M2 is a plurality of cases, they may be the same or different, X ^M1 and X ^M3 each independently represent a hydrogen atom, chlorine atom or fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, , Trifluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl, except the compound represented by the above formula (i).

(8) The liquid crystal composition according to the above (6) or (7), which contains at least one of the compounds represented by the above formula (L), which is represented by the following formula (II-2) One compound.

In the above formula (II-2), R ²³ represents an alkenyl group having 2 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(9) The liquid crystal composition according to the above (8), which contains at least 13% by mass of the compound of at least one compound represented by the above formula (II-2) with respect to the total mass of the liquid crystal composition. The compound represented by the formula (11.2).

(10) The liquid crystal composition according to any one of the above (7), wherein at least one of the compounds represented by the formula (M) is at least one of the following formulas ( Compound represented by X-6).

In the above formula (X-6), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(11) The liquid crystal composition according to the above (10), which contains at least one of 0.5% by mass or more and 4% by mass or less, based on the total mass of the liquid crystal composition, as represented by the above formula (X-6) The compound represented by the following formula (44.1).

The liquid crystal composition according to any one of the above-mentioned items (1), wherein at least one of the compounds represented by the above formula (M) is at least one of the following formulas ( Compound represented by IX-2-2).

In the above formula (IX-2-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(13) The liquid crystal composition according to the above (12), which contains at least one of at least 9% by mass of the compound represented by the above formula (IX-2-2), based on the total mass of the liquid crystal composition. The compound represented by the following formula (31.2).

The liquid crystal composition according to any one of the above-mentioned items (7), which contains the following formula (IX-2-) of at least one compound represented by the above formula (M) 3) At least one compound represented.

In the above formula (IX-2-3), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(15) The liquid crystal composition according to the above (14), which is at least one of 0.5% by mass or more and less than 5% by mass based on the total mass of the liquid crystal composition, as the above (IX-2-3) The compound represented by the following formula (32.2) of the compound shown.

(16) The liquid crystal composition according to the above (14) or (15), which contains at least one of 0.5% by mass or more and less than 5% by mass based on the total mass of the liquid crystal composition. IX-2-3) A compound represented by the following formula (32.4).

The liquid crystal composition according to any one of the above-mentioned (7), wherein at least one of the compounds represented by the above formula (M) is at least one of the following formulae ( Compound represented by IX-2-1).

In the above formula (IX-2-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(18) The liquid crystal composition according to the above (17), which contains at least one compound represented by the formula (30.1) which is a compound represented by the above formula (IX-2-1).

(19) The liquid crystal composition according to the above (17) or (18), which contains at least one compound represented by the formula (30.2) which is a compound represented by the above formula (IX-2-1).

The liquid crystal composition according to any one of the above-mentioned items (7), wherein at least one of the compounds represented by the above formula (M) is at least one of the following formulas ( Compound represented by X-2-1).

In the above formula (X-2-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(21) The liquid crystal composition according to the above (20), which contains at least one compound represented by the formula (39.2) which is a compound represented by the above formula (X-2-1).

The liquid crystal composition according to any one of the above-mentioned (1), wherein at least one of the compounds represented by the above formula (M) is at least one of the following formulae ( Compound represented by X-3-1).

In the above formula (X-3-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(23) The liquid crystal composition according to the above (22), which contains at least one of 0.5% by mass or more and less than 2% by mass based on the total mass of the liquid crystal composition, as the above formula (X-3-) 1) A compound represented by the formula (41.2) of the compound shown.

The liquid crystal composition according to any one of the above-mentioned items (7), wherein at least one of the compounds represented by the above formula (M) is at least one of the following formulae ( The compound represented by XIV-2-2).

In the above formula (XIV-2-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(25) The liquid crystal composition according to the above (24), which contains at least one compound represented by the formula (54.2) which is a compound represented by the above formula (XIV-2-2).

(26) A liquid crystal composition according to the above (24) or (25), which contains at least one compound represented by the formula (54.4) which is a compound represented by the above formula (XIV-2-2).

The liquid crystal composition according to any one of the above-mentioned (7), wherein at least one of the compounds represented by the above formula (M) is at least one of the following formulas ( The compound represented by XIV-1).

In the above formula (XIV-1), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and Y ¹⁴ represents a fluorine atom. Chlorine atom or -OCF ₃ .

(28) The liquid crystal composition according to the above (27), which contains at least one of at least 8% by mass of the compound represented by the above formula (XIV-1), based on the total mass of the liquid crystal composition. (51.1) The compound represented.

The liquid crystal composition according to any one of the above-mentioned (6), wherein at least one of the compounds represented by the above formula (L) is at least one of the following formulae ( Compound represented by I-2).

In the above formula (I-2), R ¹³ and R ¹⁴ each independently represent an alkyl group having 1 to 5 carbon atoms.

(30) The liquid crystal composition according to the above (29), which contains at least one of at least 6% by mass of the compound represented by the above formula (I-2), based on the total mass of the liquid crystal composition. (3.1) The compound represented.

(31) The liquid crystal composition according to the above (29) or (30), which contains at least one of at least 6% by mass based on the total mass of the liquid crystal composition, as represented by the above formula (I-2) The compound represented by the formula (3.3).

The liquid crystal composition according to any one of the above-mentioned items (29) to (31), which contains at least one kind of the liquid crystal composition as represented by the above formula (I-2) A compound represented by the formula (3.4).

The liquid crystal composition according to any one of the above-mentioned (6), wherein at least one of the compounds represented by the above formula (L) is at least one of the following formulas ( I-5) The compound represented.

In the above formula (I-5), R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and R ¹² represents a carbon number. An alkyl group of 1 to 5, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(34) The liquid crystal composition according to the above (33), which contains at least one compound represented by the formula (6.6) which is a compound represented by the above formula (I-5).

The liquid crystal composition according to any one of the above-mentioned items (7), which contains at least one of the following general formula (X-) represented by the above formula (M). 4-1) The compound represented.

In the above formula (X-4-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(36) The liquid crystal composition according to the above (35), which contains at least one compound represented by the formula (42.3) which is a compound represented by the above formula (X-4-1).

The liquid crystal composition according to any one of the above aspects (1) to (36), further comprising a compound represented by the following formula (2.5).

The liquid crystal composition according to any one of the above-mentioned items (7), wherein at least one of the compounds represented by the above formula (M) is at least one of the following formulae ( Compound represented by XIII-3).

In the above formula (XIII-3), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(39) A liquid crystal composition according to the above (38), which contains at least one compound represented by the formula (50.1) which is a compound represented by the above formula (XIII-3).

The liquid crystal composition according to any one of the above aspects (1) to (39), further comprising a compound represented by the following formula (Q-a).

In the above formula (Qa), R ^Q1 represents a linear alkyl group or a branched alkyl group having 1 to 10 carbon atoms.

(41) The liquid crystal composition according to the above (40), which contains a compound represented by the following formula (Q-a-1) which is a compound represented by the above formula (Q-a).

The liquid crystal composition according to any one of the above-mentioned items (1) to (41), further comprising a compound represented by the following formula (Q-c).

In the above formula (Qc), R ^Q3 represents a linear alkyl group having 1 to 8 carbon atoms, a branched alkyl group, a linear alkoxy group or a branched alkoxy group.

(43) The liquid crystal composition according to the above (42), which contains a compound represented by the following formula (Q-c-1) which is a compound represented by the above formula (Q-c).

The liquid crystal composition according to any one of the above-mentioned (6) to (43), which is represented by the following formula (12.4) which is a compound represented by the above formula (L). Compound.

The liquid crystal composition according to any one of the above aspects (1) to (4), further comprising a compound represented by the following formula (62.1).

(46) A liquid crystal display device using the liquid crystal composition according to any one of the items (1) to (45) above.

(47) The liquid crystal display device according to (46) above, wherein the display mode is the IPS mode.

(48) The liquid crystal display device according to (46) above, wherein the display mode is the OCB mode.

(49) The liquid crystal display device according to (46) above, wherein the display mode is the ECB mode.

(50) The liquid crystal display device according to (46) above, wherein the display mode is the VA mode.

(51) The liquid crystal display device according to (46) above, wherein the display mode is a VA-IPS mode.

(52) The liquid crystal display device according to (46) above, wherein the display mode is the FFS mode.

(53) A liquid crystal display device using the liquid crystal display device according to any one of the items (46) to (52) above.

The composition having positive dielectric anisotropy of the present invention maintains low viscosity, high specific resistance, and high voltage holding ratio, and the solubility in a relatively low temperature is remarkably improved, and the liquid crystal is passed through the ODF method. It is possible to continue the drip that has been stabilized over a long period of time in the manufacturing process of the display component. Therefore, the composition of the present invention can produce a liquid crystal display element which exhibits excellent display quality due to a display defect caused by a manufacturing process, and has high practicability (applicability) to a liquid crystal product, and uses IPS ( A liquid crystal display element such as an in-plane switching type or an FFS (fringe field switching) type can achieve a high-speed reaction.

100‧‧‧1st substrate

102‧‧‧TFT layer

103‧‧‧ pixel electrodes

104‧‧‧ Passivation layer

105‧‧‧1st alignment film

200‧‧‧2nd substrate

201‧‧‧flat film

202‧‧‧Black matrix

203‧‧‧Color filters

203a‧‧‧Color Filters

203b‧‧‧Color Filters

203c‧‧‧Color Filter

204‧‧‧Transparent electrode

205‧‧‧2nd alignment film

301‧‧‧ sealing material

302‧‧‧protrusions (columnar spacers)

303‧‧‧Liquid layer

304‧‧‧protrusions (columnar spacers)

401‧‧‧mask pattern

402‧‧‧ resin layer

L‧‧‧Light

Fig. 1 is a cross-sectional view showing a liquid crystal display element of the present invention. A substrate having 100 to 105 is referred to as a "back plane", and a substrate having 200 to 205 is referred to as a "front plane".

Fig. 2 is a view showing an exposure processing step of forming a pattern using a columnar spacer formed on a black matrix as a mask pattern.

[Formation for carrying out the invention]

The liquid crystal composition of the present invention has a liquid crystal composition having positive dielectric anisotropy, and contains a compound represented by the following formula (i) and the following a compound represented by the formula (ii). The description of the liquid crystal composition is performed below, but "%" which is not particularly indicated means "% by mass". Further, as for the preferable content of each compound, a preferred content of the compound to be incorporated in the liquid crystal composition is exemplified (except for the case where the lower limit value is 0% by mass).

In the above formula (ii), R ⁱⁱ¹ and R ⁱⁱ² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms, and X ⁱⁱ¹ and X ⁱⁱ² each independently represent a hydrogen atom or a fluorine atom. .

^{Any of the} above X ⁱⁱ¹ and X ⁱⁱ² represents a hydrogen atom, and the other represents a fluorine atom.

The content of the compound represented by the formula (i) in the liquid crystal composition is not particularly limited, and is preferably 1% by mass or more, and preferably 2% by mass or more, based on the total mass of the liquid crystal composition. 3 mass% or more is preferable, 4 mass% or more is preferable, 5% by mass or more is preferable, 6% by mass or more is preferable, 8% by mass or more is preferable, and 9% by mass or more is preferable, and 11 mass is preferable. More than % is preferred. On the other hand, consider low-temperature solubility, nematic phase-isotropic liquid phase transfer temperature, electricity The content of the compound represented by the formula (i) in the liquid crystal composition is preferably 35 mass% or less, more preferably 30 mass% or less, and preferably 25% by mass based on the total mass of the liquid crystal composition. The following is preferable, 20% by mass or less is preferable, 15% by mass or less is preferable, and 11% by mass or less is preferable. In the above-mentioned liquid crystal composition, the content of the compound represented by the formula (i) is preferably from 1 to 35% by mass, and from 1 to 30% by mass, based on the total mass of the liquid crystal composition of the present invention. Preferably, 1 to 25% by mass is preferred, 1 to 20% by mass is preferred, 1 to 15% by mass is preferred, 3 to 35% by mass is preferred, and 4 to 35% by mass is preferred, and 6 to 35% by mass is preferred. The mass % is preferably, 8 to 15 mass% is preferred, 9 to 35 mass% is preferred, 11 to 35 mass% is preferred, 2 to 11 mass% is preferred, and 3 to 8 mass% is preferred. 5 to 10% by mass is preferred, and 7 to 11% by mass is preferred.

The content of the compound represented by the formula (ii) in the liquid crystal composition is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention, from the viewpoint of the reaction rate, electrical, and optical reliability. Preferably, 4% by mass or more is preferable, 8% by mass or more is preferable, 10% by mass or more is preferable, 11% by mass or more is preferable, 13% by mass or more is preferable, and 15% by mass or more is preferable. 22% by mass or more is preferable, and 26% by mass or more is preferable. On the other hand, the content of the compound represented by the formula (ii) in the liquid crystal composition is preferably 40% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 35% by mass or less. 30% by mass or less is preferable, 26% by mass or less is preferable, 22% by mass or less is preferable, 15% by mass or less is preferable, and 13% by mass or less is preferable, and 10% by mass or less is preferable. In the above, the content of the compound represented by the formula (ii) in the liquid crystal composition is relative to the liquid crystal of the present invention. The total mass of the composition is preferably 1 to 40% by mass, preferably 1 to 35% by mass, preferably 1 to 30% by mass, preferably 1 to 26% by mass, and 1 to 22% by mass. Preferably, 1 to 17% by mass is preferred, 1 to 15% by mass is preferred, 1 to 13% by mass is preferred, 1 to 10% by mass is preferred, and 1 to 7% by mass is preferred, and 1 to 3 is preferred. The mass % is preferably, 4 to 40% by mass is preferred, 7 to 40% by mass is preferred, 11 to 40% by mass is preferred, 13 to 40% by mass is preferred, and 22 to 40% by mass is preferred. 26 to 40% by mass is preferred, 7 to 17% by mass is preferred, 11 to 13% by mass is preferred, 13 to 16% by mass is preferred, and 20 to 26% by mass is preferred.

The total content of the compound represented by the formula (i) and the compound represented by the formula (ii) is preferably 2% by mass or more, and preferably 5% by mass or more, based on the total mass of the liquid crystal composition. 7 mass% or more is preferable, 10 mass% or more is preferable, 11 mass% or more is preferable, 14 mass% or more is preferable, 15 mass% or more is preferable, 16 mass% or more is preferable, and 19 mass is preferable. % or more is preferable, 21% by mass or more is preferable, 24% by mass or more is preferable, 26% by mass or more is preferable, 31% by mass or more is preferable, and 33% by mass or more is preferable. On the other hand, the total content of the compound represented by the formula (i) and the compound represented by the formula (ii) is preferably 45% by mass or less, and preferably 40% by mass or less based on the total mass of the liquid crystal composition. Preferably, it is preferably 35 mass% or less, more preferably 33 mass% or less, more preferably 31 mass% or less, more preferably 27 mass% or less, more preferably 24 mass% or less, and 22 mass% or less. Preferably, 21% by mass or less is preferable, 20% by mass or less is preferable, 19% by mass or less is preferable, 16% by mass or less is preferable, 15% by mass or less is preferable, and 14% by mass or less is preferable. 12% by mass or less is preferred, and 10% by mass or less is preferred. 7% by mass or less is preferred. In the above, the total content of the compound represented by the formula (i) and the compound represented by the formula (ii) is preferably 2 to 45% by mass based on the total mass of the liquid crystal composition, and 5 to 40% by weight. The mass % is preferably, 5 to 35 mass% is preferred, 5 to 33 mass% is preferred, 5 to 31 mass% is preferred, 5 to 24 mass% is preferred, and 5 to 21 mass% is preferred. 5 to 19% by mass is preferred, 5 to 16% by mass is preferred, 5 to 14% by mass is preferred, 5 to 10% by mass is preferred, and 5 to 7% by mass is preferred, and 7 to 45% by mass is preferred. % is preferred, 10 to 45% by mass is preferred, 14 to 45% by mass is preferred, 15 to 45% by mass is preferred, 16 to 45% by mass is preferred, and 19 to 45% by mass is preferred. 21 to 45 mass% is preferred, 24 to 45 mass% is preferred, 31 to 45 mass% is preferred, 33 to 45 mass% is preferred, and 5 to 7 mass% is preferred, and 7 to 12 mass% is preferred. Preferably, 10 to 15% by mass is preferred, 11 to 15% by mass is preferred, 14 to 16% by mass is preferred, 17 to 27% by mass is preferred, and 17 to 22% by mass is preferred, and 17 is preferred. ~20% by mass is preferred, and 26 to 33% by mass is preferred.

The compound represented by the above formula (ii) contains at least one of the liquid crystal compositions of the present invention. When the compound represented by the above formula (ii) is blended in at least two types, it is suitably combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The compound represented by the above formula (ii) is preferably at least one compound selected from the group consisting of compounds represented by the following formula (ii-1).

In the above formula (ii-1), R ^ii1a and R ^ii2a each independently represent an alkyl group having 1 to 5 carbon atoms.

The content of the compound represented by the above formula (ii-1) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is necessary to adjust the performance of the request.

The content of the compound represented by the above formula (ii-1) is, for example, 1 to 35 mass% in one embodiment, based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 1% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 1% to 26% by mass. Further, in another embodiment of the present invention, the content is from 1 to 22% by mass. Further, in another embodiment of the present invention, the content is from 1 to 16% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 15% by mass. Further, in another embodiment of the present invention, the content is 1% to 13% by mass. Further, in another embodiment of the present invention, the content is from 1 to 11% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 10% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 8% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 4% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 3% by mass. Further, in another embodiment of the present invention, the content is 4 to 35% by mass. Further, in another embodiment of the present invention, the content is 8 to 35 mass%. Further, in another embodiment of the present invention, the content is from 11 to 35% by mass. Further, in another embodiment of the present invention, the content is 13% by mass to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 35. quality%. Further, in another embodiment of the present invention, the content is 20 to 35% by mass. Further, in another embodiment of the present invention, the content is 22 to 35 mass%. Further, in another embodiment of the present invention, the content is 26 to 35 mass%. Further, in another embodiment of the present invention, the content is 11% by mass to 13% by mass. Further, in another embodiment of the present invention, the content is 13 to 16% by mass. Further, in another embodiment of the present invention, the content is 20 to 26% by mass.

Further, the compound represented by the formula (ii-1), for example, at least one compound selected from the group consisting of compounds represented by the formulae (ii.1.1) to (ii.1.9) is preferred, The compound represented by ii.1.3) is preferred.

The type of the compound which can be combined is not particularly limited, but one to three kinds of these compounds are preferable, and one to four types are more preferable. Further, since the molecular weight distribution of the selected compound is also broad, it is effective for solubility, for example, represented by the formula (ii.1.1) or the formula (ii.1.2). The compound of the formula (ii.1.4) or the formula (ii.1.5) is selected as one type, and the compound represented by the formula (ii.1.6) or the formula (ii.1.7) is selected as one type, It is preferred to select one type of compound from the compound represented by the formula (ii.1.8) or the formula (ii.1.9). Among them, a compound represented by the formula (ii.1.1), the formula (ii.1.3), the formula (ii.1.4), the formula (ii.1.6), and/or the formula (ii.1.9) is preferred.

The content of the compound represented by the above formula (ii.1.1) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is necessary to adjust the performance of the request. For example, the content of the compound represented by the above formula (ii.1.1) is 4 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and other embodiments of the present invention are 11 to 20% by mass, and still another embodiment of the present invention is preferably 11 to 14% by mass. In the above, the content of the compound represented by the above formula (ii.1.1) is preferably 11% by mass or more, and more preferably 11 to 20% by mass, based on the total mass of the liquid crystal composition of the present invention. ~14% by mass is more preferred.

The content of the compound represented by the above formula (ii.1.3) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is necessary to adjust the performance of the request. For example, the content of the compound represented by the above formula (ii.1.3) is preferably 1 to 20% by mass, preferably 1 to 15% by mass, more preferably 3 to 12, based on the total mass of the liquid crystal composition of the present invention. The mass % is better, and 5 to 10% by mass is even better.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is only a liquid crystal composition of the compound represented by the above formula (ii.1.3), and the above formula is based on the total mass of the liquid crystal composition. The total content of the compound represented by (i) and the compound represented by the above formula (ii.1.3) is preferably 3 to 27% by mass, more preferably 7 to 22% by mass, and still more preferably 10 to 17% by mass. .

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is of two types, and the compound represented by the above formula (ii) is a compound represented by the above formula (ii.1.1) and the above formula. (ii.1.3) The liquid crystal composition of the compound represented by the above formula (i) and the compound represented by the above formula (ii.1.1) and the above formula (ii) with respect to the total mass of the liquid crystal composition The total content of the compound represented by .1.3) is preferably 5 to 30% by mass, more preferably 10 to 25% by mass, and still more preferably 15 to 22% by mass.

Alternatively, the compound represented by the above formula (ii), for example, at least one compound selected from the group consisting of compounds represented by the formula (ii-2) is preferred.

In the above formula (ii-2), R ^ii1b and R ^ii2b each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, but at least one of them represents a carbon number of 2 to 5. The alkenyl group, X ^ii1b and X ^ii2b each independently represent a hydrogen atom or a fluorine atom.

The kind of the compound which can be combined is not particularly limited, but is suitably combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (ii-2) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is necessary to adjust the performance of the request. For example, the content of the compound represented by the above formula (ii-2) is preferably from 0.5 to 20% by mass, preferably from 0.5 to 15% by mass, preferably from 0.5 to 10, based on the total mass of the liquid crystal composition of the present invention. The mass % is preferably 0.5 to 7 mass%, preferably 1 to 7 mass%.

Further, the compound represented by the formula (ii-2) is, for example, preferably at least one compound selected from the group consisting of compounds represented by the formula (ii.2.1) to the formula (ii.2.10), wherein The compounds represented by the formula (ii.2.1), the formula (ii.2.2), the formula (ii.2.9), and/or the formula (ii.2.10) are preferred, and the formula (ii.2.2) and/or the formula (ii) The compound represented by ii.2.10) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (ii.2.1) or the above formula (ii.2.2) is considered in consideration of the solubility at low temperature, the transfer temperature, electrical reliability, etc., with respect to the liquid crystal of the present invention. The total mass of the composition is preferably 0.5% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 7% by mass or less, more preferably 0.5% by mass or more and less than 5% by mass, and more preferably 0.5% by mass or more. The mass % or less is particularly good.

The liquid crystal composition containing only one of the compounds represented by the above formula (ii.2.1) or the above formula (ii.2.2) as the compound represented by the above formula (ii), the above formula (ii.2.1) The content of the compound represented by the above formula (ii.2.2) is preferably 0.5% by mass or more and less than 5% by mass, and preferably 0.5% by mass or more and 2% by mass or less based on the total mass of the liquid crystal composition.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (ii.2.4) is considered to be low temperature solubility, transfer temperature, electrical reliability, etc., relative to the total mass of the liquid crystal composition of the present invention. The mass% or more is preferably 15% by mass or less, preferably 1% by mass or more and 10% by mass or less, more preferably 1% by mass or more and 5% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (ii.2.9) is 0.5 in relation to the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The mass% or more and 15% by mass or less are more preferably 0.5% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 5% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (ii.2.10) is considered to be the low-temperature solubility, the transfer temperature, the electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. 0.5% by mass or more and 15% by mass or less is more preferably 0.5% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 5% by mass or less.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a liquid crystal composition of only the compound represented by the above formula (ii.2.2), and the above formula is based on the total mass of the liquid crystal composition. The total content of the compound represented by (i) and the compound represented by the above formula (ii.2.2) is preferably 2 to 15% by mass, more preferably 3 to 13% by mass, and still more preferably 4 to 11% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is only a liquid crystal composition of the compound represented by the above formula (ii.2.2) and the compound represented by the above formula (ii.2.10). With respect to the total mass of the liquid crystal composition, the total content of the compound represented by the above formula (i) and the compound represented by the above formula (ii.2.2) and the compound represented by the above formula (ii.2.10) is 7~ 18% by mass is more preferable, 10 to 17% by mass is more preferable, and 13 to 16% by mass is more preferable.

The liquid crystal composition containing the compound of the 1-3 type of the compound represented by the above formula (ii), the compound represented by the above formula (i) and the above formula (ii) with respect to the total mass of the liquid crystal composition The total content of the compound represented by the compound is preferably 5 to 45% by mass, more preferably 5 to 40% by mass. In the case where the compound represented by the above formula (ii) contained in the liquid crystal composition is three types, the compound represented by the above formula (i) and the above formula are based on the total mass of the liquid crystal composition. (ii) The total content of the compound represented is preferably 5% by mass or more and less than 19% by mass, more preferably 10% by mass or more and 18% by mass or less, and still more preferably 13% by mass or more and 16% by mass or less. The aforementioned pass contained in the liquid crystal composition When the compound represented by the formula (ii) is of two types, the total content of the compound represented by the above formula (i) and the compound represented by the above formula (ii) is 8 mass based on the total mass of the liquid crystal composition. It is more preferably 45% by mass or more, more preferably 10% by mass or more and 42% by mass or less, and more preferably 13% by mass or more and 39% by mass or less. When the compound represented by the above formula (ii) contained in the liquid crystal composition is one type, the compound represented by the above formula (i) and the above formula (ii) are based on the total mass of the liquid crystal composition. The total content of the compound to be represented is preferably 5% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 15% by mass or less, and still more preferably 5% by mass or more and less than 6% by mass.

The liquid crystal composition of the present invention may further contain at least one kind of the compound represented by the formula (L).

In the above formula (L), R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two non-adjacent-CH ₂ - groups independently represent Substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-.

OL means 0, 1, 2 or 3.

B ^L1 , B ^L2 and B ^L3 each independently represent a group selected from the group consisting of: (a) 1,4-cyclohexylene (one of -CH ₂ - present in this group or at least 2 which is not adjacent) -CH ₂ - may be substituted with -O-), and (b) 1,4-phenylene (one of the CH- or the non-contiguous at least 2 -CH= Replaced with -N=).

At least one of the hydrogen atoms in the above-mentioned group (a) and the group (b) may be independently substituted with a cyano group, a fluorine atom or a chlorine atom.

L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ - , -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-.

OL is 2 or 3 and L ^L2 is a plurality of cases, and they may be the same or different.

OL is 2 or 3 and B ^L3 is a plurality of cases, and they may be the same or different.

However, the compound represented by the above formula (ii) is excluded.

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence (refractive index anisotropy). The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are of four types. Further, other embodiments of the present invention are of five types. Further, other embodiments of the present invention are six types. Further, other embodiments of the present invention are seven types. Further, other embodiments of the present invention are eight types. Further, other embodiments of the present invention are nine types. Further, other embodiments of the present invention are 10 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (L) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, dielectric It is necessary to adjust the properties required for anisotropy and the like.

The content of the compound represented by the above formula (L) is, for example, 10 to 90% by mass in terms of one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 15 to 85% by mass. Further, in another embodiment of the present invention, the content is 20% by mass to 80% by mass. Further, in another embodiment of the present invention, the content is 24 to 80% by mass. Further, in another embodiment of the present invention, the content is from 27 to 80% by mass. Further, in another embodiment of the present invention, the content is from 33 to 80% by mass. Further, in another embodiment of the present invention, the content is from 42 to 80% by mass. Further, in another embodiment of the present invention, the content is 55 to 80% by mass. Further, in another embodiment of the present invention, the content is from 59 to 80% by mass. Further, in another embodiment of the present invention, the content is from 61 to 80% by mass. Further, in another embodiment of the present invention, the content is 63 to 80% by mass. Further, in another embodiment of the present invention, the content is 66 to 80% by mass. Further, in another embodiment of the present invention, the content is 70 to 80% by mass. Further, in another embodiment of the present invention, the content is 74 to 80% by mass. Further, in another embodiment of the present invention, the content is 78 to 80% by mass. Further, in another embodiment of the present invention, the content is 25 to 74% by mass. Further, in another embodiment of the present invention, the content is 25 to 70% by mass. Further, in another embodiment of the present invention, the content is 25 to 64% by mass. Further, in another embodiment of the present invention, the content is 25 to 63% by mass. Further, in another embodiment of the present invention, the content is 25 to 59% by mass. Further, in another embodiment of the present invention, the content is 25 to 56% by mass. Furthermore, in another embodiment of the present invention, the aforementioned content is 25 to 55. quality%. Further, in another embodiment of the present invention, the content is 25 to 52% by mass. Further, in another embodiment of the present invention, the content is 25 to 33% by mass. Further, in another embodiment of the present invention, the content is from 33 to 64% by mass. Further, in another embodiment of the present invention, the content is 42 to 52% by mass. Further, in another embodiment of the present invention, the content is 55 to 63% by mass. Further, in another embodiment of the present invention, the content is 60 to 50% by mass. Further, in another embodiment of the present invention, the content is 66 to 74% by mass. Further, in another embodiment of the present invention, the content is 67 to 70% by mass. Further, in another embodiment of the present invention, the content is 78% to 79% by mass.

It is preferable to maintain the liquid crystal composition of the present invention having a low viscosity and a liquid crystal composition having a high reaction rate, and it is preferable that the lower limit is high and the upper limit is high. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high Tni and a good temperature stability, it is preferable that the lower limit is high and the upper limit is high. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable that the lower limit is low and the upper limit is low.

R ^L1 and R ^{L2 are} in the case where the ring to which the bond is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, and a linear carbon atom having 1 to 4 (or more) Alkoxy group or an alkenyl group having 4 to 5 carbon atoms is preferred, and the ring to which the bond is bonded is cyclohexane, piper, or In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 or more carbon atoms, or a linear carbon The alkenyl group having 2 to 5 atoms is preferred.

In the case where the compound represented by the formula (L) is required to satisfy the chemical stability of the liquid crystal composition, it is preferred that the molecule does not have a chlorine atom in the molecule.

The compound represented by the formula (L), for example, a compound selected from the group of compounds represented by the formula (I) is preferred.

R ¹¹ -A ¹¹ -A ¹² -R ¹² (I)

In the above formula (I), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms, and A ¹¹ And A ¹² each independently represents 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4-phenylene.

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are of four types. Further, other embodiments of the present invention are of five types. Further, other embodiments of the present invention are six or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, dielectric It is necessary to adjust the properties required for anisotropy and the like.

The content of the compound represented by the above formula (I) is, for example, 10 to 75% by mass in terms of one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or other implementations of the invention The content of the form is 10 to 70% by mass. Further, in another embodiment of the present invention, the content is 10% to 65% by mass. Further, in another embodiment of the present invention, the content is 10% to 60% by mass. Further, in another embodiment of the present invention, the content is 10% to 55% by mass. Further, in another embodiment of the present invention, the content is 10% to 52% by mass. Further, in another embodiment of the present invention, the content is 10% to 49% by mass. Further, in another embodiment of the present invention, the content is 10% to 44% by mass. Further, in another embodiment of the present invention, the content is 10% to 38% by mass. Further, in another embodiment of the present invention, the content is 10% by mass to 20% by mass. Further, in another embodiment of the present invention, the content is 16 to 70% by mass. Further, in another embodiment of the present invention, the content is 20% to 70% by mass. Further, in another embodiment of the present invention, the content is 38 to 70% by mass. Further, in another embodiment of the present invention, the content is 41% to 70% by mass. Further, in another embodiment of the present invention, the content is 42% to 70% by mass. Further, in another embodiment of the present invention, the content is 48% to 70% by mass. Further, in another embodiment of the present invention, the content is 52 to 70% by mass. Further, in another embodiment of the present invention, the content is 55 to 70% by mass. Further, in another embodiment of the present invention, the content is 16 to 46% by mass. Further, in another embodiment of the present invention, the content is 38 to 46% by mass. Further, in another embodiment of the present invention, the content is from 41 to 45% by mass. Further, in another embodiment of the present invention, the content is 42% to 43% by mass. Further, in another embodiment of the present invention, the content is 48% to 49% by mass.

It is preferable to maintain the liquid crystal composition of the present invention having a low viscosity and a liquid crystal composition having a high reaction rate, and it is preferable that the lower limit is high and the upper limit is high. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high Tni and a good temperature stability, the above-mentioned lower limit is moderate and the upper limit is moderate. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable that the lower limit is low and the upper limit is low.

R ¹¹ and R ¹² in the case where the ring to which the bond is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, and a linear alkoxy group having 1 to 4 carbon atoms a base or an alkenyl group having 4 to 5 carbon atoms is preferred, and the bonded ring is configured as cyclohexane, meme or di In the case of a saturated ring structure such as an alkane, it is a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, or a linear carbon number of 2 to 5 Alkenyl is preferred.

The compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-1).

In the above formula (I-1), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Kind of compound used The class, for example, is one type of embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are of four types. Further, other embodiments of the present invention are five or more types.

In the case where the liquid crystal composition of the present invention is blended with the compound represented by the formula (I-1), the content of the compound depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, It is necessary to adjust the properties required for dropping traces, residual images, dielectric anisotropy, and the like.

The content of the compound represented by the above formula (I-1) is, for example, 1 to 70% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is from 1 to 65% by mass. Further, in another embodiment of the present invention, the content is 1 to 60% by mass. Further, in another embodiment of the present invention, the content is from 1 to 56% by mass. Further, in another embodiment of the present invention, the content is from 1 to 52% by mass. Further, in another embodiment of the present invention, the content is 1% to 49% by mass. Further, in another embodiment of the present invention, the content is from 1 to 48% by mass. Further, in another embodiment of the present invention, the content is 1 to 45% by mass. Further, in another embodiment of the present invention, the content is 1% to 40% by mass. Further, in another embodiment of the present invention, the content is 1 to 38.5% by mass. Further, in another embodiment of the present invention, the content is 1% to 36% by mass. Further, in another embodiment of the present invention, the content is from 1 to 29% by mass. Further, in another embodiment of the present invention, the content is 1 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 16 quality%. Further, in another embodiment of the present invention, the content is 5 to 70% by mass. Further, in another embodiment of the present invention, the content is 16 to 70% by mass. Further, in another embodiment of the present invention, the content is 20% to 70% by mass. Further, in another embodiment of the present invention, the content is from 29 to 70% by mass. Further, in another embodiment of the present invention, the content is 37 to 70% by mass. Further, in another embodiment of the present invention, the content is 38 to 70% by mass. Further, in another embodiment of the present invention, the content is 42 to 70% by mass. Further, in another embodiment of the present invention, the content is 48% to 70% by mass. Further, in another embodiment of the present invention, the content is 49 to 70% by mass. Further, in another embodiment of the present invention, the content is 52 to 70% by mass. Further, in another embodiment of the present invention, the content is 55 to 70% by mass. Further, in another embodiment of the present invention, the content is 5 to 36% by mass. Further, in another embodiment of the present invention, the content is 16 to 45% by mass. Further, in another embodiment of the present invention, the content is 37 to 38.5% by mass. Further, in another embodiment of the present invention, the content is 38 to 40% by mass. Further, in another embodiment of the present invention, the content is 42 to 48% by mass. Further, in another embodiment of the present invention, the content is 42 to 45% by mass. Further, in another embodiment of the present invention, the content is 48% to 49% by mass. Further, in another embodiment of the present invention, the content is 52 to 55% by mass.

It is preferable that the liquid crystal composition of the present invention has a low viscosity and a liquid crystal composition having a high reaction rate, and the lower limit is high and the upper limit is high. Further, it is necessary to maintain a liquid crystal composition having a high Tni of the liquid crystal composition of the present invention and having good temperature stability, and the above lower limit is moderate and the upper limit is a moderate one. Preferably. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable that the lower limit is low and the upper limit is low.

Alternatively, the compound represented by the formula (I-1) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-1-1).

In the above formula (I-1-1), R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-1-1) is dependent on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. It is necessary to adjust the performance required for shadow, dielectric anisotropy, and the like.

The content of the compound represented by the above formula (I-1-1) is, for example, 1 to 30% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 1 to 25% by mass. Further, in another embodiment of the present invention, the content is 1 to 20% by mass. Further, in another embodiment of the present invention, the content is from 1 to 16% by mass. Further, in another embodiment of the present invention, the content is from 1 to 11% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 8% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 5% by mass. Further, in another embodiment of the present invention, the content is 4 to 25% by mass. Further, in another embodiment of the present invention, the content is 6 to 25% by mass. In addition, In another embodiment of the present invention, the content is 8 to 25% by mass. Further, in another embodiment of the present invention, the content is 11 to 25% by mass. Further, in another embodiment of the present invention, the content is 4 to 10% by mass. Further, in another embodiment of the present invention, the content is 4% by mass to 7% by mass. Further, in another embodiment of the present invention, the content is 6 to 16% by mass. Further, in another embodiment of the present invention, the content is 6 to 11% by mass. Further, in another embodiment of the present invention, the content is 6 to 9% by mass. Further, in another embodiment of the present invention, the content is 6 to 7% by mass. Further, in another embodiment of the present invention, the content is 5 to 8% by mass. Further, in another embodiment of the present invention, the content is 8 to 13% by mass. Further, in another embodiment of the present invention, the content is from 11 to 16% by mass. Further, in another embodiment of the present invention, the content is 11 to 15% by mass. Further, in another embodiment of the present invention, the content is 12 to 14% by mass.

Further, the compound represented by the above formula (I-1-1) is preferably a compound selected from the group consisting of compounds represented by the formulae (1.1) to (1.3), and the formula (1.2) or the formula (1.3) The compound represented is preferred, and in particular, the compound represented by the formula (1.3) is preferred.

When the compounds represented by the formula (1.2) or the formula (1.3) are used alone, the higher the content of the compound represented by the formula (1.2) is effective in improving the reaction rate, and the compound represented by the formula (1.3) Content in The range shown below is preferable because it can be a liquid crystal composition having a fast reaction rate and high electrical reliability.

The content of the compound represented by the formula (1.3) is, for example, 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 1 to 25% by mass. Or another embodiment of the present invention is that the content is from 1 to 20% by mass. Or another embodiment of the present invention is that the content is from 1 to 16% by mass. Or another embodiment of the present invention is that the content is from 1 to 14% by mass. Or another embodiment of the present invention is that the content is from 1 to 11% by mass. Or another embodiment of the present invention is that the content is 1% by mass to 8% by mass. Or another embodiment of the present invention is that the content is 1 to 5% by mass. Or another embodiment of the present invention is that the content is 4 to 10% by mass. Or another embodiment of the present invention is that the content is 4 to 7% by mass. Or another embodiment of the present invention is that the content is 6 to 16% by mass. Or another embodiment of the present invention is that the content is 6 to 11% by mass. Or another embodiment of the present invention is that the content is 6 to 9% by mass. Or another embodiment of the present invention is that the content is 6 to 7% by mass. Or another embodiment of the present invention is that the content is 8 to 13% by mass. Or another embodiment of the present invention is that the content is 11 to 16% by mass. Or another embodiment of the present invention is that the content is 11 to 15% by mass. Or another embodiment of the present invention is that the content is 12 to 14% by mass.

Alternatively, the compound represented by the formula (I-1) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-1-2).

In the above formula (I-1-2), R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-2) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, and the afterimage. It is necessary to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (I-1-2) is, for example, 1 to 65% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is from 1 to 60% by mass. Further, in another embodiment of the present invention, the content is 1% to 56% by mass. Further, in another embodiment of the present invention, the content is 1% to 49% by mass. Further, in another embodiment of the present invention, the content is 1% to 47% by mass. Further, in another embodiment of the present invention, the content is 1% to 43% by mass. Further, in another embodiment of the present invention, the content is from 1 to 41% by mass. In addition, this issue In other embodiments, the above content is from 1 to 36% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 1% to 27% by mass. Further, in another embodiment of the present invention, the content is from 1 to 22% by mass. Further, in another embodiment of the present invention, the content is from 1 to 16% by mass. Further, in another embodiment of the present invention, the content is 10% to 60% by mass. Further, in another embodiment of the present invention, the content is 15 to 60% by mass. Further, in another embodiment of the present invention, the content is 22 to 60% by mass. Further, in another embodiment of the present invention, the content is 27 to 60% by mass. Further, in another embodiment of the present invention, the content is 34% to 60% by mass. Further, in another embodiment of the present invention, the content is 37 to 60% by mass. Further, in another embodiment of the present invention, the content is from 41 to 60% by mass. Further, in another embodiment of the present invention, the content is 43% to 60% by mass. Further, in another embodiment of the present invention, the content is 47% to 60% by mass. Further, in another embodiment of the present invention, the content is 49 to 60% by mass. Further, in another embodiment of the present invention, the content is 10% to 56% by mass. Further, in another embodiment of the present invention, the content is 10% to 44% by mass. Further, in another embodiment of the present invention, the content is from 12 to 30% by mass. Further, in another embodiment of the present invention, the content is 13 to 16% by mass. Further, in another embodiment of the present invention, the content is 22 to 29% by mass. Further, in another embodiment of the present invention, the content is 22 to 27.5% by mass. Further, in another embodiment of the present invention, the content is 27 to 30% by mass. Further, in another embodiment of the present invention, the content is 34% to 44% by mass. In addition, other embodiments of the present invention The above content is 34 to 36% by mass. Further, in another embodiment of the present invention, the content is 37 to 41% by mass. Further, in another embodiment of the present invention, the content is 40% to 43% by mass. Further, in another embodiment of the present invention, the content is 42 to 48% by mass. Further, in another embodiment of the present invention, the content is 44 to 49% by mass. Further, in another embodiment of the present invention, the content is 49 to 56% by mass.

Further, the compound represented by the formula (I-1-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (2.1) to (2.4), and represented by the formulae (2.2) to (2.4). The compound is preferred. In particular, the compound represented by the formula (2.2) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention. Further, in the case of Tni having a higher reaction rate, it is preferred to use a compound represented by the formula (2.3) or the formula (2.4). The content of the compound represented by the formula (2.3) and the formula (2.4) is preferably 30% by mass or more in order to improve the solubility at a low temperature.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.2) is preferably 1% by mass or more and 65% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or more and 60% by mass or less. The following is preferable, and 10% by mass or more and 60% by mass or less is preferable. this In the case where the liquid crystal composition of the present invention contains two or three kinds of compounds as the compound represented by the above formula (ii), the content of the compound represented by the above formula (2.2) is relative to the total of the liquid crystal composition. The mass is preferably at least 47% by mass, more preferably 47% by mass or more and 53% by mass or less, and more preferably 47% by mass or more and 50% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.3) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 5% by mass and 30% by mass. The following is preferable, and 10% by mass or more and 30% by mass or less is preferable, and 10% by mass or more and 15% by mass or less is preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.4) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 1% by mass and 25% by mass. In the following, it is more preferably 1% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, more preferably 5% by mass or more and 15% by mass or less, and most preferably 10% by mass or more and 15% by mass or less. Preferably.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (2.5) having a structure similar to the compound represented by the formula (I-1-2).

The performance expressed by the above formula (2.5) is adjusted in accordance with the performance required for low temperature solubility, transfer temperature, electrical reliability, and birefringence. The content of the compound is preferably, and the compound is preferably 15 to 35% by mass, more preferably 18 to 30% by mass, even more preferably 22 to 33% by mass, based on the total mass of the liquid crystal composition of the present invention. Good, containing 25~30% by mass is especially good.

The liquid crystal composition containing at least two types of the compound represented by the above formula (ii) and further containing the liquid crystal composition of the above formula (2.5), the compound represented by the above formula (i) and the above formula (ii) The total content of the compound represented by the above formula (2.5) is preferably from 50 to 75% by mass, more preferably from 55 to 70% by mass, still more preferably from 58 to 67% by mass.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-2).

In the above formula (I-2), R ¹³ and R ¹⁴ each independently represent an alkyl group having 1 to 5 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-2) depends on the solubility at low temperature, the transfer temperature, and the electricity. The performance required for reliability, birefringence, process suitability, dripping marks, afterimage, dielectric anisotropy, etc., is appropriately adjusted.

The content of the compound represented by the above formula (I-2) is preferably from 3 to 50% by mass, more preferably from 15 to 45% by mass, based on the total mass of the liquid crystal composition of the present invention, and is preferably from 30 to 43% by mass. % is better and 35 to 40% by mass is especially good.

Further, the compound represented by the above formula (I-2) is preferably at least one compound selected from the group consisting of compounds represented by formula (3.1) to formula (3.4), and formula (3.1) and formula (3.3). And a compound represented by the formula (3.4) is preferred. In particular, the compound represented by the formula (3.1) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention. Further, in the case of Tni having a higher reaction rate, it is preferred to use a compound represented by the formula (3.3) and/or the formula (3.4). The content of the compound represented by the formula (3.3) and the formula (3.4) is preferably 20% by mass or more in order to improve the solubility at a low temperature.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (3.1) is preferably at least 6 mass%, and preferably 6 mass% or more and 40 mass% or less based on the total mass of the liquid crystal composition of the present invention. More preferably, it is more preferably 10% by mass or more and 35% by mass or less, more preferably 15% by mass or more and 30% by mass or less, and particularly preferably 20% by mass or more and 25% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (3.3) is preferably 3% by mass or more and 25% by mass or more based on the total mass of the liquid crystal composition of the present invention, and is preferably 6% by mass or more. The mass% or less is more preferably, and 10% by mass or more and 15% by mass or less is more preferably. In these, the preferred lower limit of the content of the compound represented by the above formula (3.3) is 6% by mass based on the total mass of the liquid crystal composition of the present invention.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (3.4) is preferably at least 3% by mass based on the total mass of the liquid crystal composition of the present invention, and more preferably 3% or more and 15% by mass or less. 3 mass% or more and 10 mass% or less are more preferably, and 3 mass% or more and 5% by mass or less are particularly preferable.

The liquid crystal composition containing only one of the compounds represented by the above formula (ii.2) which is a compound represented by the above formula (ii), preferably contains the compound represented by the above formula (I-2) A compound represented by the formula (3.3). The total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (3.3) is 3 to 27% by mass based on the total mass of the liquid crystal composition. Preferably, 7 to 22% by mass is more preferably, and 12 to 17% by mass is more preferably.

The liquid crystal composition containing only one of the compounds represented by the above formula (ii.1) which is a compound represented by the above formula (ii), preferably contains the compound represented by the above formula (I-2) Style (3.1) The compound represented by the formula, the compound represented by the formula (3.3), and the compound represented by the formula (3.4). The compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the formula (3.1), the compound represented by the formula (3.3), and the total mass of the liquid crystal composition. The total content of the compound represented by the above formula (3.4) is preferably from 32 to 58% by mass, more preferably from 37 to 53% by mass, still more preferably from 42 to 48% by mass.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-3).

In the above formula (I-3), R ¹³ represents an alkyl group having 1 to 5 carbon atoms, and R ¹⁵ represents an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-3) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is necessary to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (I-3) is, for example, 3 to 30% by mass in terms of one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 4 to 30% by mass. Further, in another embodiment of the present invention, the content is 15 to 30% by mass. Further, in another embodiment of the present invention, the content is 25 to 30% by mass. Further, in another embodiment of the present invention, the content is 3 to 25% by mass. Further, in another embodiment of the present invention, the content is 3 to 20% by mass. Further, in another embodiment of the present invention, the content is 3 to 15% by mass. Further, in another embodiment of the present invention, the content is 3 to 5% by mass.

When the solubility in low temperature is emphasized, the effect is high when the content is set to a large value. Conversely, when the reaction rate is emphasized, the effect is set to be high when the content is set to be small. Further, in the case of improving the characteristics of the drop or the residual image, it is preferable to set the range of the content to the middle.

Further, the compound represented by the above formula (I-3) is preferably a compound selected from the group consisting of at least one compound represented by formula (4.1) to formula (4.3), and the compound represented by formula (4.3) is preferably Preferably.

The content of the compound represented by the above formula (4.3) is 2% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention. % or less is preferably 4% by mass or more and 30% by mass or less, preferably 6 mass% or more and 30 mass% or less, preferably 8 mass% or more and 30 mass% or less, and preferably 10 mass% or more and 30 mass% or less. Preferably, it is preferably 12% by mass or more and 30% by mass or less, more preferably 14% by mass or more and 30% by mass or less, more preferably 16% by mass or more and 30% by mass or less, and 18% by mass or more and 25% by mass or less. Preferably, 20% by mass or more and 24% by mass or less are preferable, and 22% by mass or more and 23% by mass or less are particularly preferable.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-4).

In the above formula (I-4), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-4) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is necessary to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (I-4) is, for example, 1 to 20% by mass in terms of one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is from 1 to 15% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 10% by mass. Further, in another embodiment of the present invention, the content is 3 to 8% by mass. Further, in another embodiment of the present invention, the content is 5 to 8% by mass. Further, in another embodiment of the present invention, the content is 6 to 8% by mass.

In the case where a high birefringence is obtained, the effect is high when the content is set to a large value, and conversely, the case where the high Tni is emphasized, and the effect is set to be high when the content is set to be small. Further, in the case of improving the characteristics of the drop or the residual image, it is preferable to set the range of the content to the middle.

Further, the compound represented by the formula (I-4) is preferably a compound selected from the group consisting of compounds represented by the formulae (5.1) to (5.4), and is preferably selected from the group consisting of the formula (5.2) to the formula (5.2). 5.4) At least one compound of the compound group represented is preferred.

The content of the compound represented by the above formula (5.4) is preferably 1% by mass or more and 10% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 3% by mass or more and 8% by mass or less. The amount of % by weight or more is preferably 8% by mass or less, and preferably 6% by mass or more and 8% by mass or less.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-5).

In the above formula (I-5), R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and R ¹² represents a carbon number. An alkyl group of 1 to 5, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-5) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is necessary to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (I-5) is, for example, 1 to 25% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is from 1 to 20% by mass. Further, in another embodiment of the present invention, the content is 1% to 15% by mass. Further, in another embodiment of the present invention, the content is from 1 to 11% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 5% by mass. Further, in another embodiment of the present invention, the content is 2 to 15% by mass. Further, in another embodiment of the present invention, the content is 5 to 15% by mass. Further, in another embodiment of the present invention, the content is 8 to 15% by mass. Further, in another embodiment of the present invention, the content is 2 to 5% by mass. Further, in another embodiment of the present invention, the content is 8 to 11% by mass.

When the solubility in low temperature is emphasized, the effect is high when the content is set to a large value. Conversely, when the reaction rate is emphasized, the effect is set to be high when the content is set to be small. Further, in the case of improving the characteristics of the drop or the residual image, it is preferred to set the range of the content to the middle.

Further, the compound represented by the above formula (I-5) is preferably at least one compound selected from the group consisting of compounds represented by formula (6.1) to formula (6.6), and formula (6.3) and formula (6.4). The compound represented by the formula (6.6) is preferred.

For example, the content of the compound represented by the above formula (6.3), The total mass of the liquid crystal composition of the present invention is preferably 8 mass% or more and 14 mass% or less, more preferably 9 mass% or more and 13 mass% or less, and still more preferably 10 mass% or more and 12 mass% or less.

For example, the content of the compound represented by the above formula (6.6) is preferably 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 1% by mass or more and 10% by mass or less. 2% by mass or more and 8% by mass or less is more preferably, and 3% by mass or more and 7% by mass or less are particularly preferable.

The compound represented by the above formula (ii) contains only one compound of the compound represented by the above formula (ii), and further contains the above formula of the compound represented by the above formula (I-5). (6.6) The liquid crystal composition of the compound represented by the above formula (i), the above formula (ii) with respect to the total mass of the liquid crystal composition The total content of the compound represented by the compound represented by the above formula (6.6) is preferably 3 to 29% by mass, more preferably 8 to 24% by mass, still more preferably 13 to 19% by mass.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (6.7) and/or the formula (6.8) which is a compound represented by the formula (I-5).

It is preferred to adjust the content of the compound represented by the above formula (6.7) in view of the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and the compound is relative to the liquid crystal composition of the present invention. The total mass is preferably 2% by mass or more and 30% by mass or less, more preferably 3% by mass or more and 27% by mass or less, and most preferably 5% by mass or more and 25% by mass or less, and more preferably 7% by mass or more. The mass % or less is preferred.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-6).

In the above formula (I-6), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹¹ And X ¹² each independently represents a fluorine atom or a hydrogen atom, and any of X ¹¹ or X ¹² is a fluorine atom.

The content of the compound represented by the above formula (I-6) is preferably 2% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 4% by mass or more and 30% by mass or less is more. Preferably, it is preferably 5 mass% or more and 30 mass% or less, more preferably 6 mass% or more and 30 mass% or less, more preferably 9 mass% or more and 30 mass% or less, and still more preferably 12 mass% or more and 30 mass% or less. 14% by mass or more and 30% by mass or less is preferable, 16% by mass or more and 30% by mass or less is preferable, and 18% by mass or more and 25% by mass or less is preferable, and 20% by mass or more and 24% by mass or less are preferable, and 22 mass% is preferable. More than or equal to 23% by mass or less is preferred.

Further, the compound represented by the formula (I-6) is preferably a compound represented by the formula (7.1).

Alternatively, or in addition, the compound represented by the formula (I) is preferably a compound selected from the group consisting of the compounds represented by the formula (I-7).

In the above formula (I-7), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, X. ¹² denotes a fluorine atom or a chlorine atom.

The content of the compound represented by the above formula (I-7) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 1% by mass or more and 15% by mass or less is more preferable. Preferably, it is preferably 1% by mass or more and 10% by mass or less, and preferably 1% by mass or more and 5% by mass or less.

Further, the compound represented by the formula (I-7) is preferably a compound represented by the formula (8.1).

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-8).

In the above formula (I-8), R ¹⁶ and R ¹⁷ each independently represent an alkenyl group having 2 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, but it is preferable to combine 1 to 3 types in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (I-8) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. The performance of the liquid crystal composition is preferably 1 to 25% by mass, preferably 1 to 20% by mass, more preferably 1 to 15% by mass, and preferably 1 to 10% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 4 to 9% by mass is preferred, and 4 to 6% by mass is preferred.

Further, the compound represented by the above formula (I-8) is preferably at least one compound selected from the group consisting of compounds represented by formula (9.1) to formula (9.10), and formula (9.2) and formula (9.4). And a compound represented by the formula (9.7) is preferred.

Alternatively, the compound represented by the above formula (L) is preferably a compound selected from the group consisting of at least one compound represented by the formula (II).

In the above formula (II), R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ² represents 1,4-cyclohexylene or 1,4-phenylene, Q ² represents a single bond, -COO-, -CH ₂ -CH ₂ - or -CF ₂ O-. However, the compound represented by the above formula (ii) is excluded.

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, the present invention is based on three other types. Further, other embodiments of the present invention are four or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (II) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, dielectric It is necessary to adjust the properties required for anisotropy and the like.

The content of the compound represented by the above formula (II) is, for example, 1 to 35 mass% in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is from 1 to 30% by mass. Further, in another embodiment of the present invention, the content is 1% to 26% by mass. Further, in another embodiment of the present invention, the content is 1 to 20% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 15% by mass. Further, in another embodiment of the present invention, the content is from 1 to 11% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 7% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 3% by mass. Further, in another embodiment of the present invention, the content is 1.5 to 30% by mass. Further, in another embodiment of the present invention, the content is 7 to 30% by mass. In addition, In another embodiment of the present invention, the content is 11 to 30% by mass. Further, in another embodiment of the present invention, the content is 15 to 30% by mass. Further, in another embodiment of the present invention, the content is 23 to 30% by mass. Further, in another embodiment of the present invention, the content is 1.5 to 26% by mass. Further, in another embodiment of the present invention, the content is 1.5 to 3% by mass. Further, in another embodiment of the present invention, the content is 11 to 20% by mass. Further, in another embodiment of the present invention, the content is from 12 to 15% by mass. Further, in another embodiment of the present invention, the content is 23 to 26% by mass.

In addition, the compound represented by the above formula (II) is preferably, for example, at least one compound selected from the group consisting of compounds represented by the formula (II-1).

In the above formula (II-1), R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (II-1) is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is 4% by mass or more and 24% by mass. % or less is preferable, and 8 mass% or more and 18 mass% or less are preferable, and 12 mass% or more and 14 mass% or less are more preferable.

Further, the compound represented by the formula (II-1) is preferably a compound represented by the formula (10.1) and/or the formula (10.2), for example.

Alternatively, the compound represented by the above formula (II) is preferably at least one compound selected from the group consisting of compounds represented by the formula (II-2).

In the above formula (II-2), R ²³ represents an alkenyl group having 2 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (II-2) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is necessary to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (II-2) is, for example, 1 to 30% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or other implementations of the invention The content of the form is 1 to 26% by mass. Further, in another embodiment of the present invention, the content is 1 to 20% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 15% by mass. Further, in another embodiment of the present invention, the content is from 1 to 11% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 7% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 3% by mass. Further, in another embodiment of the present invention, the content is 1.5 to 30% by mass. Further, in another embodiment of the present invention, the content is 7 to 30% by mass. Further, in another embodiment of the present invention, the content is 11% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 15 to 30% by mass. Further, in another embodiment of the present invention, the content is 23 to 30% by mass. Further, in another embodiment of the present invention, the content is 1.5 to 26% by mass. Further, in another embodiment of the present invention, the content is 1.5 to 3% by mass. Further, in another embodiment of the present invention, the content is 11 to 20% by mass. Further, in another embodiment of the present invention, the content is from 12 to 15% by mass. Further, in another embodiment of the present invention, the content is 23 to 26% by mass.

In addition, the compound represented by the above formula (II-2) is preferably a compound selected from the group consisting of at least one compound represented by the formula (11.1) to the formula (11.3).

The compound represented by the formula (11.1) may be contained in the compound represented by the formula (11.1), and may also contain a compound represented by the formula (11.2), and may also contain a compound having a solubility in a low temperature, a transfer temperature, an electrical reliability, and a birefringence. Both the compound represented by the formula (11.1) and the compound represented by the formula (11.2) may contain all of the compounds represented by the formula (11.1) to the formula (11.3).

The content of the compound represented by the above formula (11.1) is preferably from 1 to 30% by mass, more preferably from 1 to 25% by mass, even more preferably from 1 to 20% by mass, based on the total mass of the liquid crystal composition of the present invention. Better. 5 to 20% by mass is particularly good.

Further, the content of the compound represented by the above formula (11.2) is preferably at least 13% by mass, more preferably 13 to 25% by mass, and more preferably 15 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. Better.

When both the compound represented by the above formula (11.1) and the compound represented by the above formula (11.2) are contained, the total mass of the two compounds is 23% by mass or more and 35% by mass based on the total mass of the liquid crystal composition of the present invention. The following is preferable, and it is more preferably 24% by mass or more and 33% by mass or less, and more preferably 25% by mass or more and 30% by mass or less.

A liquid crystal composition containing only a compound of one of the compounds represented by the above formula (ii), and a compound represented by the above formula (11.1) which is a compound represented by the above formula (II-2) and the aforementioned The liquid crystal composition of the compound represented by the formula (11.2), the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula (11.1), based on the total mass of the liquid crystal composition. The total content of the compound represented by the above formula (11.2) is preferably from 23 to 50% by mass, more preferably from 28 to 45% by mass, still more preferably from 33 to 40% by mass.

When the compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is one or two types, the compound represented by the above formula (i) and the above formula are the total mass of the liquid crystal composition. The total content of the compound represented by the formula (II) and the compound represented by the above formula (II-2) is preferably 15 to 60% by mass, more preferably 18 to 57% by mass, and most preferably 21 to 54% by mass. Better yet.

Alternatively, the compound represented by the above formula (II) is preferably at least one compound selected from the group consisting of compounds represented by the formula (II-3).

In the above formula (II-3), R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, but it is preferable to contain 1 to 3 of these compounds in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (II-3) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is necessary to adjust the performance of the request.

The preferred content of the compound represented by the above formula (II-3) is, for example, 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention. In this case, for example, 5 to 45 mass%, 8 to 45 mass%, 11 to 45 mass%, 14 to 45 mass%, 17 to 45 mass%, 20 to 45 mass%, 23 to 45 mass%, 26~ 45% by mass, 29 to 45% by mass, or 2 to 45% by mass, 2 to 40% by mass, 2 to 35% by mass, 2 to 30% by mass, 2 to 25% by mass, 2 to 20% by mass, 2 to 15% by mass The mass% and 2 to 10% by mass are preferable.

In addition, the compound represented by the above formula (II-3) is preferably a compound selected from the group consisting of at least one compound represented by the formula (12.1) to the formula (12.4).

The compound represented by the formula (12.1) may be contained in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and may also contain a compound represented by the formula (12.2). Both the compound represented by the formula (12.1) and the compound represented by the formula (12.2).

The content of the compound represented by the formula (12.1) is preferably 3% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 5% by mass or more and 40% by mass or less, and 7 mass%. More preferably, the amount is preferably 40% by mass or more, more preferably 9% by mass or more and 40% by mass or less, more preferably 11% by mass or more and 40% by mass or less, more preferably 12% by mass or more and 40% by mass or less, and more preferably 13% by mass or more. 40% by mass or less is preferable, and 18% by mass or more and 30% by mass or less is preferable, and 21% by mass or more and 25% by mass or less is preferable.

Further, the content of the compound represented by the formula (12.2) is preferably 3% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 5% by mass or more and 40% by mass or less. 8 mass% or more and 40 mass% or less are preferable, and 10 mass% or more and 40 mass% or less are preferable, and 12 mass% or more and 40 mass% or less are preferable, and 15 mass% or more and 40 mass% or less are preferable, and 17 mass% is preferable. It is preferable that it is 30% by mass or more and more preferably 19% by mass or more and 25% by mass or less.

When both the compound represented by the formula (12.1) and the compound represented by the formula (12.2) are contained, the total mass of the two compounds is 15% by mass or more and 45% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is preferably 19% by mass or more and 45% by mass or less, more preferably 24% by mass or more and 40% by mass or less, and more preferably 30% by mass or more and 35% by mass or less.

In addition, the content of the compound represented by the formula (12.3) is preferably 0.05% by mass or more and 2% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 0.1% by mass or more and 1% by mass or less. 0.2% by mass or more and 0.5% by mass or less is preferred. The compound represented by the formula (12.3) may be an optically active compound.

In addition, the content of the compound represented by the formula (12.4) is preferably 0.1% by mass or more and 2% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 0.1% by mass or more and 1% by mass or less. 0.2% by mass or more and 0.5% by mass or less is more preferable.

Further, the compound represented by the formula (II-3) is preferably, for example, at least one compound selected from the group consisting of compounds represented by the formula (II-3-1).

In the above formula (II-3-1), R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁶ represents an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, but it is preferable to contain 1 to 3 of these compounds in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (II-3-1) is preferably adjusted in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 1% by mass or more. It is preferably 24 mass% or less, more preferably 4 mass% or more and 18 mass% or less, and more preferably 6 mass% or more and 14 mass% or less.

Further, the compound represented by the formula (II-3-1) is, for example, preferably at least one compound selected from the group consisting of compounds represented by the formulas (13.1) to (13.4), in particular, the formula (13.3) The compound represented is preferred.

Alternatively, the compound represented by the above formula (II) is preferably at least one compound selected from the group consisting of compounds represented by the formula (II-4).

In the above formula (II-4), R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.

It is preferable to contain only one type of these compounds, or to contain two or more types, but it is preferable to combine them suitably according to the performance requested. The type of the compound which can be combined is not particularly limited, but it is preferable to contain one or two kinds of these compounds in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is better to have 1 to 3 types.

The content of the compound represented by the formula (II-4) is 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention. % or less is preferably 2% by mass or more and 15% by mass or less, preferably 3% by mass or more and 15% by mass or less, more preferably 4% by mass or more and 12% by mass or less, and 5% by mass or more and 7% by mass or less. It is better.

Further, the compound represented by the formula (II-4) is, for example, preferably at least one compound selected from the group consisting of compounds represented by the formulae (14.1) to (14.5), particularly, the formula (14.2) and Or a compound represented by the formula (14.5) is preferred.

Alternatively, the compound represented by the above formula (L) is preferably at least one compound selected from the group consisting of compounds represented by the formula (III).

In the above formula (III), R ³¹ and R ³² each independently represent an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (III) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of the solubility or the birefringence of the liquid crystal composition. It is preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 12% by mass or less, more preferably 1% by mass or more and 9% by mass or less, and more preferably 4% by mass or more and 9% by mass or less. Preferably, it is preferably 6 mass% or more and 9 mass% or less.

Further, the compound represented by the above formula (III) is preferably a compound represented by the formula (15.1) and/or the formula (15.2), and particularly preferably a compound represented by the formula (15.1).

Further, the compound represented by the formula (III) is preferably a compound selected from at least one of the group of compounds represented by the formula (III-1).

In the above formula (III-1), R ³³ represents an alkenyl group having 2 to 5 carbon atoms, and R ³² represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (III-1) is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is liquid crystal relative to the present invention. The total mass of the composition is preferably 1% by mass or more and 23% by mass or less, more preferably 6% by mass or more and 18% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

The compound represented by the above formula (III-1) is preferably a compound represented by the formula (16.1) and/or the formula (16.2), for example.

Alternatively, the compound represented by the above formula (III) is preferably at least one compound selected from the group consisting of compounds represented by the formula (III-2).

In the above formula (III-2), R ³¹ represents an alkyl group having 1 to 5 carbon atoms, and R ³⁴ represents an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (III-2) is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is relative to the liquid crystal of the present invention. The total mass of the composition is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass or more and 18% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (III-2) is preferably, for example, at least one compound selected from the group consisting of compounds represented by the formulae (17.1) to (17.3), particularly represented by the formula (17.3). The compound is preferred.

Further, the compound represented by the formula (L) is preferably at least one compound selected from the group consisting of compounds represented by the formula (V).

In the above formula (V), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ⁵¹ and A ⁵² each independently represents a 1,4-cyclohexylene group or a 1,4-phenylene group, Q ⁵ represents a single bond or -COO-, and X ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom.

The kind of the compound which can be combined is not particularly limited, but is suitably combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are of four types.

The content of the compound represented by the above formula (V) with respect to the total mass of the liquid crystal composition of the present invention is, for example, 1 to 30% by mass in one embodiment. Further, in another embodiment of the present invention, the content is 1 to 25% by mass. Further, in another embodiment of the present invention, the content is 1 to 20% by mass. Further, in another embodiment of the present invention, the content is 1% to 17% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 8% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 4% by mass. Further, in another embodiment of the present invention, the content is 2 to 20% by mass. Further, in another embodiment of the present invention, the content is 2 to 17% by mass. Further, in another embodiment of the present invention, the content is 2% by mass to 8% by mass.

Further, the compound represented by the formula (V) is preferably a compound represented by the formula (V-1).

In the above formula (V-1), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, X. ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom.

Further, the compound represented by the above formula (V-1) is preferably a compound represented by the formula (V-1-1).

In the above formula (V-1-1), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-1-1) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 1% by mass or more and 10% by mass or less. More preferably, it is preferably 1% by mass or more and 5% by mass or less.

Further, the compound represented by the formula (V-1-1) is preferably a compound selected from the group consisting of compounds represented by the formula (20.1) to the formula (20.4), and is preferably represented by the formula (20.2). Compounds are preferred.

Alternatively, the compound represented by the above formula (V-1) is preferably a compound represented by the formula (V-1-2).

In the above formula (V-1-2), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-1-2) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 1% by mass or more and 10% by mass or less. Preferably, it is preferably 1% by mass or more and 5% by mass or less, and more preferably 1% by mass or more and 3% by mass or less.

Further, the compound represented by the formula (V-1-2) is preferably a compound selected from the group consisting of compounds represented by the formula (21.1) to the formula (21.3), and is preferably represented by the formula (21.1). Compounds are preferred.

Alternatively, the compound represented by the above formula (V-1) is preferably a compound represented by the formula (V-1-3).

In the above formula (V-1-3), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-1-3) contains 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention. % or less is preferable, and it is preferably 2% by mass or more and 15% by mass or less, more preferably 3% by mass or more and 10% by mass or less, and more preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-3) is preferably a compound selected from the group consisting of compounds represented by the formula (22.1) to the formula (22.3), and is preferably represented by the formula (22.1). The compound is more preferred.

Alternatively, or in addition, the compound represented by the formula (V) is preferably a compound represented by the formula (V-2).

In the above formula (V-2), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, X. ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom.

The kind of the compound which can be combined is not particularly limited, but is suitably combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two or more types.

The content of the compound represented by the above formula (V-2) is, for example, 1 to 30% by mass in one embodiment, based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content of the compound is from 1 to 25% by mass. Further, in another embodiment of the present invention, the content of the compound is from 1 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 1 to 17% by mass. Further, in another embodiment of the present invention, the content of the compound is from 1 to 10% by mass. Further, in another embodiment of the present invention, the content of the compound is from 1 to 4% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 10 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 17% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

The embodiment in which the liquid crystal composition of the present invention has a high Tni is desirable, and it is preferable to use a plurality of compounds represented by the above formula (V-2), and the low viscosity embodiment is desirable. It is preferred to make the content less.

Further, the compound represented by the above formula (V-2) is preferably a compound represented by the formula (V-2-1).

In the above formula (V-2-1), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-2-1) is preferably contained in an amount of 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 1% by mass or more and 20% by mass or less. Preferably, it is preferably 1% by mass or more and 17% by mass or less, more preferably 1% by mass or more and 10% by mass or less, more preferably 1% by mass or more and 4% by mass or less, and more preferably 2% by mass or more and 20% by mass or less. In the following, it is preferably 10% by mass or more and 20% by mass or less, more preferably 2% by mass or more and 4% by mass or less, more preferably 2% by mass or more and 17% by mass or less, and more preferably 2% by mass or more. The mass % or less is preferred.

Further, the compound represented by the above formula (V-2-1) is preferably a compound selected from the group consisting of compounds represented by the formula (23.1) to the formula (23.4), and the formula (23.1) and/or Or a compound represented by the formula (23.2) is preferred.

Alternatively, the compound represented by the above formula (V-2) is preferably a compound represented by the formula (V-2-2).

In the above formula (V-2-2), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-2-2) is preferably contained in an amount of 2% by mass or more and 16% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 3% by mass or more and 13% by mass or less. Preferably, it is preferably 4% by mass or more and 10% by mass or less.

Further, the compound represented by the above formula (V-2-2) is preferably at least one compound selected from the group consisting of compounds represented by formula (24.1) to formula (24.4), and formula (24.1) and/or Or a compound represented by the formula (24.2) is preferred.

Alternatively, the compound represented by the above formula (V) is preferably a compound represented by the formula (V-3).

In the above formula (V-3), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but is suitably combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three or more types.

The compound represented by the above formula (V-3) is preferably contained in an amount of 1% by mass or more and 16% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 1% by mass or more and 13% by mass or less. It is preferably 1% by mass or more and 9% by mass or less, and more preferably 3% by mass or more and 9% by mass or less.

Further, the compound represented by the formula (V-3) is preferably a compound selected from at least one of the group of compounds represented by the formula (25.1) to the formula (25.3).

Alternatively, the compound represented by the above formula (V) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (V-4).

In the above formula (V-4), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (V-4) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 2% by mass or more and 15% by mass or less. It is preferably 3% by mass or more and 10% by mass or less, and more preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-4) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (25.11) to (25.13), and the compound represented by the formula (25.13) is preferably Better.

Alternatively, the compound represented by the above formula (L) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (V'-5).

In the above formula (V'-5), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (V'-5) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 2% by mass or more and 15% by mass or less. Preferably, it is preferably 2% by mass or more and 10% by mass or less, and more preferably 5% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (V'-5) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (25.21) to the formula (25.24), and the formula (25.21) and/or the formula. The compound represented by (25.23) is more preferred.

The liquid crystal composition of the present invention may further contain at least one compound represented by the formula (VI).

In the above formula (VI), R ⁶¹ and R ⁶² each independently represent a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms or a linear chain having 2 to 10 carbon atoms. Alkenyl.

The type of the compound which can be combined is not particularly limited, but it is preferred to blend 1 to 3 of these compounds in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is more preferable to contain 1 to 4 types, and it is particularly preferable to contain 1 to 5 types.

The content of the compound represented by the above formula (VI) is preferably from 0 to 35 mass%, more preferably from 0 to 25 mass%, and from 0 to 15 mass%, based on the total mass of the liquid crystal composition of the present invention. Preferably.

As the compound represented by the above formula (VI), specifically, the compounds exemplified below can be preferably used.

The liquid crystal composition of the invention of the present invention may further contain at least one compound represented by the formula (VII).

In the above formula (VII), R ⁷¹ and R ⁷² each independently represent a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms or a linear chain having 4 to 10 carbon atoms. Alkenyl.

The type of the compound which can be combined is not particularly limited, but it is preferably selected in accordance with the properties of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Preferably, it is more preferable to blend 1 to 4 types, and it is particularly preferable to contain 1 to 5 types or more.

The content of the compound represented by the above formula (VII) is preferably from 0 to 35 mass%, more preferably from 0 to 25 mass%, and more preferably from 0 to 15 mass%, based on the total mass of the liquid crystal composition of the present invention. Preferably.

As the compound represented by the above formula (VII), specifically, the compounds exemplified below can be preferably used.

The liquid crystal composition of the present invention further preferably contains at least one compound represented by the following formula (M).

In the above formula (M), R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more of -CH ₂ - which are not adjacent to each other may be independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group of the following constituent groups : (d) 1,4-cyclohexylene (one of -CH ₂ - or two or more of -CH ₂ - which are not adjacent to this group may be substituted with -O- or -S-), and (e) 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= may be substituted by -N=), the above-mentioned base (d) and (e) each independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^M1 is a plurality of cases, they may For the same or different, PM is 2, 3 or 4 and C ^M2 is a plurality of cases, and they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine. atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, Fluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl. However, the compound represented by the above formula (i) is excluded.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Furthermore, other embodiments of the present invention are of four types. Further, other embodiments of the present invention are of five types. Further, other embodiments of the present invention are six types. Further, other embodiments of the present invention are seven or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (M) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, dielectric It is necessary to adjust the properties required for anisotropy and the like.

The content of the compound represented by the above formula (M) is from 1 to 70% by mass based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 65% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 60% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 52% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 38% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 32% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 29% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 22% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 15% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 10% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 60% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 60% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 18 to 60% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 21 to 60% by mass. For example, in addition to the other aspects of the present invention In the embodiment, the content of the compound is from 26 to 60% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 29 to 60% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 33 to 60% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 52% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 38% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 15% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 15% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 15% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 18 to 22% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 18 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 21 to 32% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 26 to 38% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 33 to 38% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 29 to 52% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 32 to 52% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 38 to 52% by mass.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is high, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention having a high Tni and good temperature stability is required, it is preferable to set the lower limit value to a low value and to set the upper limit value to a low value. . Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and the upper limit value to a high value.

R ^M1 is a case where the ring to which the bond is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a carbon atom. The number of 4 to 5 alkenyl groups is preferred, and the bonded ring structure is cyclohexane, meme, and In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear carbon atom having 2 to 5 carbon atoms Alkenyl is preferred.

When the compound represented by the formula (M) is required to chemically stabilize the liquid crystal composition, it is preferred that the compound does not have a chlorine atom in its molecule. Further, the content of the compound having a chlorine atom in the liquid crystal composition is preferably 0 to 5% by mass, more preferably 0 to 3% by mass, and 0 to 1% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 0 to 0.5% by mass is preferred, and substantially no content is preferred. The substance is not substantially contained in the liquid crystal composition, and only a compound containing an unintended chlorine atom such as a compound formed as an impurity in the production of the compound is mixed.

The compound represented by the formula (M) is preferably, for example, at least one compound selected from the group consisting of compounds represented by the formula (VIII).

In the above formula (VIII), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁸¹ to X ⁸⁵ are each independently represented. A hydrogen atom or a fluorine atom, and Y ⁸ represents a fluorine atom or -OCF ₃ . However, the compound represented by the above formula (i) is excluded.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound which can be used is, for example, one type in the embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (VIII) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, dielectric It is necessary to adjust the properties required for anisotropy and the like.

The content of the compound represented by the above formula (VIII) is, for example, 1 to 25% by mass in terms of one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 15% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 5 to 15% by mass. For example, just In still another embodiment of the present invention, the content of the compound is 7 to 12% by mass.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is high, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention having a high Tni and good temperature stability is required, it is preferable to set the lower limit value to a low value and to set the upper limit value to a low value. . Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and the upper limit value to a high value.

Further, the compound represented by the formula (VIII) is preferably a compound represented by the formula (VIII-1).

In the above formula (VIII-1), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. However, the compound represented by the above formula (i) is excluded.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two or more types.

Further, the compound represented by the above formula (VIII-1) is specifically selected from at least one compound selected from the group consisting of the compounds represented by the formula (26.1), the formula (26.3), and the formula (26.4). Preferably, the compound represented by the formula (26.1) is preferred.

The content of the compound represented by the above formula (26.1) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. In the following, it is preferably 1% by mass or more and 15% by mass or less, more preferably 5% by mass or more and 15% by mass or less, and still more preferably 7% by mass or more and 12% by mass or less.

Alternatively, or in addition, the compound represented by the above formula (VIII) is preferably a compound represented by the formula (VIII-2).

In the above formula (VIII-2), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Alternatively, the other embodiments of the present invention are three or more types.

The content of the compound represented by the above formula (VIII-2) is considered to be 2.5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 25 mass% or less is preferable, 8 mass% or more and 25 mass% or less are preferable, 10 mass% and 20 mass% or less are preferable, and 12 mass% or more and 15 mass% or less are preferable.

Further, the compound represented by the formula (VIII-2) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (27.1) to the formula (27.4), and the compound represented by the formula (27.2) is preferably Preferably.

Alternatively, or in addition, the compound represented by the above formula (VIII) is preferably a compound represented by the formula (VIII-3).

In the above formula (VIII-3), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Type of compound used, examples For example, in one embodiment of the present invention, it is a type. Or other embodiments of the present invention are two or more types.

The content of the compound represented by the above formula (VIII-3) is 0.5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 15% by mass or less is preferable, and 0.5% by mass or more and 10% by mass or less is preferable, and 0.5% by mass or more and 5% by mass or less is preferable, and 1% by mass or more and 5% by mass or less is preferable.

Further, the compound represented by the above formula (VIII-3), specifically, at least one compound selected from the group consisting of compounds represented by formula (26.11) to formula (26.14) is preferred, and formula (26.11) is preferred. And / or the compound represented by the formula (26.12) is preferable, and the compound represented by the formula (26.12) is more preferable.

Alternatively, or in addition, the compound represented by the above formula (VIII) is preferably a compound represented by the formula (VIII-4).

In the above formula (VIII-4), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the above formula (VIII-4) can be appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (VIII-4) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 2 to 25 in other embodiments. The mass % is in the range of 3 to 20% by mass in other embodiments, and in other embodiments, the content of the compound is 3 to 13% by mass, and in still other embodiments, the content of the compound is 3 to 10% by mass. In still another embodiment, the content of the compound is from 1 to 5% by mass.

In addition, the compound represented by the formula (VIII-4) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the group of compounds represented by the formula (26.21) to the formula (26.24). Preferably, the compound represented by the formula (26.24) is more preferably contained.

Further, the compound represented by the above formula (M), for example, at least one compound selected from the group consisting of compounds represented by the formula (IX) is preferred.

In the above formula (IX), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁹¹ and X ⁹² are each independently represented. A hydrogen atom or a fluorine atom, Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ , and U ⁹ represents a single bond, -COO- or -CF ₂ O-.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Furthermore, other embodiments of the present invention are of four types. Further, other embodiments of the present invention are of five types. Further, other embodiments of the present invention are six or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (IX) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, dielectric It is necessary to adjust the properties required for anisotropy and the like.

The content of the compound represented by the above formula (IX) is, for example, 1 to 55% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 50% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 45% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 41% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 14% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 12% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 3% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 2 to 50% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 50% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 50% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 39 to 50% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 39 to 41% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 2 to 14% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 2 to 12% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 2 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 2 to 3% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 14% by mass.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is high, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high T value and is difficult to cause image sticking, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and the upper limit value to a high value.

Further, the compound represented by the above formula (IX) is preferably a compound represented by the formula (IX-1).

In the above formula (IX-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁹² represents a hydrogen atom or A fluorine atom, Y ⁹ represents a fluorine atom or -OCF ₃ .

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Furthermore, other embodiments of the present invention are four or more types.

Further, the compound represented by the above formula (IX-1) is preferably a compound represented by the formula (IX-1-1).

In the above formula (IX-1-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Furthermore, other embodiments of the present invention are three or more types.

The content of the compound represented by the above formula (IX-1-1) is appropriately adjusted in consideration of the embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-1-1) is, for example, 1 to 35 mass% in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 30% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 25% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 11% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 25% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 25% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 25% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 25% by mass. For example, in still other embodiments of the present invention, the foregoing The content of the compound is from 3 to 19% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 11% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 6% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 19% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 17% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 11% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 11% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 19% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 17% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 19% by mass.

Further, the compound represented by the above formula (IX-1-1) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (28.1) to (28.5), and the formula (28.3) and/or Or a compound represented by the formula (28.5) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.3) is preferably 1% by mass or more and 25% by mass or less based on the total amount of the liquid crystal composition of the present invention, and is preferably 1% by mass or more and 20% by mass. % or less is preferable, and 1% by mass or more and 15% by mass or less is preferable. In the above, 1% by mass or more and 10% by mass or less, 1% by mass or more and 8% by mass or less, 1% by mass or more and 6% by mass or less, 3% by mass or more and 10% by mass or less, and 3% by mass or more and 8% by mass or less. It is preferable that it is 6 mass% or more and 9 mass% or less, and 7 mass% or more and 10 mass% or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (28.5) is 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 25 mass% or less is preferable, and 1 mass% or more and 20 mass% or less are preferable, and 1 mass% or more and 15 mass% or less are preferable, and 3 mass% or more and 15 mass% or less are preferable, and 5 mass% or more is preferable. The mass % or less is preferred.

When the compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is 2 or 3 types, the content of the compound represented by the above formula (28.5) is based on the total mass of the liquid crystal composition. At least 3 mass% is preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 5 mass% or more and 10 mass% or less are more preferable.

Alternatively, the compound represented by the above formula (IX-1) is preferably a compound represented by the formula (IX-1-2).

In the above formula (IX-1-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, but it is preferable to combine one to three types in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine one to four types.

The content of the compound represented by the above formula (IX-1-2) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 5% by mass or more and 30% by mass or less, preferably 8% by mass or more and 30% by mass or less, more preferably 10% by mass or more and 25% by mass or less, and most preferably 14% by mass or more and 22% by mass or less. Preferably, it is preferably 16% by mass or more and 20% by mass or less.

Further, the compound represented by the above formula (IX-1-2) is at least one selected from the group consisting of compounds represented by formula (29.1) to formula (29.4). The compound is preferably a compound represented by the formula (29.2) and/or the formula (29.4).

Alternatively, the compound represented by the above formula (IX) is preferably a compound represented by the formula (IX-2).

In the above formula (IX-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ⁹¹ and X ⁹² Independently represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ .

There are no restrictions on the types of compounds that can be combined, but considering the solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc. In the embodiment, it is suitably used in combination. For example, one embodiment of the present invention is one type, two types in other embodiments, three types in other embodiments, four types in still other embodiments, and five types in still other embodiments, and In still another embodiment, the combination is six or more types.

Further, the compound represented by the formula (IX-2) is preferably a compound represented by the formula (IX-2-1).

In the above formula (IX-2-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, but it is preferable to combine 1 to 3 types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (IX-2-1) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, in one embodiment of the present invention, the content of the compound represented by the above formula (IX-2-1) is preferably from 1 to 25% by mass, based on the total mass of the liquid crystal composition of the present invention, 1~ 20% by mass is better, and 1 to 15% by mass is better.

Further, the compound represented by the formula (IX-2-1) is preferably at least one compound selected from the group consisting of compounds represented by the formulas (30.1) to (30.4), and the formula (30.1) and/or The compound represented by the formula (30.2) is preferred.

The content of the compound represented by the above formula (30.1) is preferably from 1 to 15% by mass, more preferably from 1 to 10% by mass, even more preferably from 1 to 5% by mass based on the total mass of the liquid crystal composition of the present invention. Better.

The content of the compound represented by the above formula (30.2) is preferably from 1 to 20% by mass, more preferably from 5 to 16% by mass, even more preferably from 8 to 13% by mass, based on the total mass of the liquid crystal composition of the present invention. Better.

The liquid crystal composition containing the compound of the 2-3 types of the compound represented by the above formula (ii) is more preferably contained in the compound represented by the above formula (IX-2-1). The compound shown is a compound represented by the above formula (30.2). The compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (30.1), and the formula (30.2) are represented by the total mass of the liquid crystal composition. The total content of the compound is preferably from 23 to 49% by mass, more preferably from 28 to 44% by mass, and still more preferably from 33 to 39% by mass.

Alternatively, the compound represented by the above formula (IX-2) is preferably a compound represented by the formula (IX-2-2).

In the above formula (IX-2-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, but it is preferable to combine 1 to 3 types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and it is more preferable to combine 1 to 4 types.

The content of the compound represented by the above formula (IX-2-2) is appropriately adjusted in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (IX-2-2) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 3 in other embodiments. ~25% by mass, in other embodiments, 6 to 25% by mass, and in other embodiments, 9 to 25% by mass, and in other embodiments, 12 to 25% by mass, and in other embodiments, 12 to 20%. The mass % is 12 to 17% by mass in other embodiments. In the above, the content of the compound represented by the above formula (IX-2-2) is preferably 9% by mass or more based on the total mass of the liquid crystal composition of the present invention.

Further, the compound represented by the formula (IX-2-2) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (31.1) to the formula (31.4), and is selected from the formula (31.2) to At least one compound of the compound group represented by the formula (31.4) is preferred, and the compound represented by the formula (31.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (31.2) is 3 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is in other embodiments. 9 to 25% by mass, and 12 to 25% by mass in other embodiments, 12 to 20% by mass in other embodiments, and 12 to 17% by mass in other embodiments. In the above, the content of the compound represented by the above formula (31.2) is preferably at least 9% by mass, more preferably 9 to 25% by mass, based on the total mass of the liquid crystal composition of the present invention, and is further carried out. The morphology is preferably 12 to 25% by mass, 12 to 20% by mass is more preferably, and 12 to 17% by mass is particularly preferred.

a liquid crystal containing at least two types of compounds as the compound represented by the above formula (ii), and further containing a compound represented by the above formula (31.2) as a compound represented by the above formula (IX-2-2) The total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (31.2) is 27 to the total mass of the liquid crystal composition. 45% by mass is preferred, 29 to 41% by mass is more preferably, and 32 to 38% by mass is more preferably.

Alternatively, the compound represented by the above formula (IX-2) is preferably a compound represented by the formula (IX-2-3).

In the above formula (IX-2-3), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound that can be combined is not limited, but it is preferable to combine 1-2 types in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-2-3) is 1% by mass or more and 10% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % is not preferred, and 1% by mass or more and 8% by mass or less is more preferably 5% by mass or more and 8% by mass or less is more preferably.

Further, the compound represented by the formula (IX-2-3) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (32.1) to (32.4), and the formula (32.2) and/or The compound represented by the formula (32.4) is preferred.

The content of the compound represented by the above formula (32.2) or the compound represented by the above formula (32.4) is considered to be 0.5 in terms of the low-temperature solubility, transfer temperature, electrical reliability, and the like, with respect to the total mass of the liquid crystal composition of the present invention. The mass% or more and less than 5% by mass are more preferably 0.5% by mass or more and 4% by mass or less, more preferably 2% by mass or more and 4% by mass or less.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is one type, and further contains the compound (32.2) represented by the compound represented by the above formula (IX-2-3). The liquid crystal composition of the compound represented by the above formula (32.4), the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula with respect to the total mass of the liquid crystal composition. The total content of the compound represented by the formula (32.2) and the compound represented by the above formula (32.4) is preferably 6 to 21% by mass, more preferably 9 to 19% by mass, still more preferably 12 to 17% by mass.

Alternatively, the compound represented by the above formula (IX-2) is preferably a compound represented by the formula (IX-2-4).

In the above formula (IX-2-4), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (IX-2-4) is 1% by mass or more and 25 mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 1% by mass or more and 20% by mass or less, preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 12% by mass or less, and 5% by mass or more and 12% by mass or less. Preferably, it is preferably 7 mass% or more and 12 mass% or less.

Further, the compound represented by the formula (IX-2-4) is preferably at least one compound selected from the group consisting of compounds represented by the formulas (33.1) to (33.6), and the formula (33.1) and/or The compound represented by the formula (33.3) is preferred.

Alternatively, the compound represented by the above formula (IX-2) is preferably a compound represented by the formula (IX-2-5).

In the above formula (IX-2-5), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound that can be combined is not limited, but it can be used in combination in any of the embodiments in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type, and two types in other embodiments, and three types in other embodiments, and four or more types in still other embodiments.

The content of the compound represented by the above formula (IX-2-5) can be appropriately adjusted in each embodiment in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (IX-2-5) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~20% by mass, in other embodiments, 1 to 15% by mass, and in other embodiments, 5 to 15% by mass, and in other embodiments, 5 to 10% by mass.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is high, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high T value and is difficult to cause image sticking, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and the upper limit value to a high value.

Further, the compound represented by the formula (IX-2-5) is preferably a compound selected from the group consisting of compounds represented by the formulae (34.1) to (34.7), and the formula (34.1) and the formula (3) The compound represented by the formula (34.3) and/or the formula (34.5) is more preferable, and the compound represented by the formula (34.2) is more preferable.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains the above formula (34.2) as a compound represented by the above formula (IX-2-5). In the case of the compound to be represented, the content of the compound represented by the above formula (34.2) is preferably from 1 to 20% by mass, more preferably from 5 to 15% by mass, based on the total mass of the liquid crystal composition. 10% by mass is even better.

Alternatively, the compound represented by the above formula (IX) is preferably a compound represented by the formula (IX-3).

In the above formula (IX-3), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ⁹¹ and X ⁹² Independently represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ .

Further, the compound represented by the formula (IX-3) is preferably a compound represented by the formula (IX-3-1).

In the above formula (IX-3-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound that can be combined is not limited, but it is preferable to combine 1-2 types in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-3-1) is 3 mass% or more and 30 mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 7 mass% or more and 30 mass% or less are preferable, and 13 mass% or more and 20 mass% or less are preferable, and 15 mass% or more and 18 mass% or less are preferable.

Further, the compound represented by the formula (IX-3-1) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (35.1) to (35.4), and the formula (35.1) and/or The compound represented by the formula (35.2) is preferred.

Alternatively, or in addition, the compound represented by the above formula (M) is preferably a compound represented by the formula (X).

In the above formula (X), X ¹⁰¹ to X ¹⁰⁴ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, or -OCF ₃ , and Q ¹⁰ represents a single bond or -CF ₂ O-, R ¹⁰ An alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ¹⁰¹ and A ¹⁰² each independently represent 1,4-cyclohexylene, 1, 4-phenyl group or a group of any one of the following formulas, but a hydrogen atom on the 1,4-phenyl group may be substituted by a fluorine atom.

The compound which can be combined is not particularly limited, but it is suitably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. In still other embodiments, there are three types. In the other embodiments, there are four types. Further, in other embodiments, five or more types are used.

The content of the compound represented by the above formula (X) can be appropriately adjusted in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, the content of the compound represented by the above formula (X) is 1 to 35% by mass based on the total mass of the liquid crystal composition of the present invention, and 1 to 30% by mass in other embodiments. In other embodiments, it is 1 to 26% by mass, and in other embodiments, it is 1 to 21% by mass, and in other embodiments, it is 1 to 17% by mass, and in other embodiments, it is 1 to 14% by mass. % is again 1 to 11% by mass in other embodiments, 1 to 9% by mass in other embodiments, 2 to 30% by mass in other embodiments, and 5 to 5 in other embodiments. 30% by mass, and in other embodiments, the content is 9 to 30% by mass, and in other embodiments, the content is 11 to 30% by mass, and in other embodiments, the content is 14 to 30% by mass, and In other embodiments, the content is 16 to 30% by mass, and in other embodiments, the content is 20 to 30% by mass, and further implementation is performed. The morphological content is 2 to 5% by mass, and in other embodiments, the content is 9 to 14% by mass, and in other embodiments, the content is 16 to 17% by mass, and in other embodiments, the content is 20 ~21% by mass.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is high, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where a liquid crystal composition in which image sticking is hard to occur is necessary, it is preferable to set the lower limit value to a low value and to set the upper limit value to a low value. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and the upper limit value to a high value.

The compound represented by the above formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1).

In the above formula (X-1), X ¹⁰¹ to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or a carbon number. 1 to 4 alkoxy groups.

The compound which can be combined is not particularly limited, but may be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. In still other embodiments, there are three types. Further, in other embodiments, there are four types. Further, in other embodiments, five or more types are used.

The content of the compound represented by the above formula (X-1) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-1) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 to 15 in other embodiments. The mass % is 1 to 10% by mass in other embodiments, 1 to 9 mass% in other embodiments, and 1 to 7 mass% in other embodiments, and 1 to 7 in other embodiments. 6 mass%, in other embodiments, 1 to 3 mass%, and in other embodiments, 2 to 9 mass%, and in other embodiments, 4 to 9 mass%, and in other embodiments 6 to 9 mass%, and then 7 to 9 mass% in other embodiments, and 3 to 7 mass% in other embodiments, and 4 to 7 mass% in other embodiments, and then in other implementations. The morphology is 6 to 7 mass%.

Further, the compound represented by the formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1-1).

In the above formula (X-1-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, but a group suitable for low temperature solubility, transfer temperature, electrical reliability, birefringence, etc. Hehe. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. In still other embodiments, there are three types. Further, in other embodiments, it is four or more types.

The content of the compound represented by the above formula (X-1-1) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-1-1) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~20% by mass, in other embodiments, 1 to 15% by mass, and in other embodiments, 1 to 10% by mass, and in other embodiments, 3 to 10% by mass, and in other embodiments 4 to 9 mass%, and in other embodiments, 6 to 9 mass%.

In addition, the compound represented by the formula (X-1-1) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (36.1) to the formula (36.4). The compound is preferably a compound represented by the formula (36.1) and/or the formula (36.2).

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains the above formula (36.2) as a compound represented by the above formula (X-1-1). In the case of the compound to be represented, the content of the compound represented by the above formula (36.2) is preferably from 1 to 15% by mass, more preferably from 4 to 10% by mass, based on the total mass of the liquid crystal composition. 8% by mass is even better.

Alternatively, the compound represented by the formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1-2).

In the above formula (X-1-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (X-1-2) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-1-2) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~15% by mass, in other embodiments, 1 to 10% by mass, and in other embodiments, 1 to 7% by mass, and in still other embodiments, 2 to 7% by mass.

In addition, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (37.1) to the formula (37.4). The compound is preferably a compound represented by the formula (37.2).

Alternatively, the compound represented by the above formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1-3).

In the above formula (X-1-3), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferred to combine one or two or more kinds in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-1-3) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-1-3) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~15% by mass, in other embodiments, 1 to 10% by mass, and in other embodiments, 1 to 7% by mass, and in still other embodiments, 5 to 7% by mass.

In addition, the compound represented by the formula (X-1-3) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (38.1) to the formula (38.4). The compound is preferably a compound represented by the formula (38.2), preferably a compound represented by the formula (38.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (38.2) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or 15% by mass. % or less is preferable, and 1% by mass or more and 10% by mass or less is preferable. 1% by mass or more and 8% by mass or less is preferable, and 3% by mass or more and 5% by mass or less is preferable, and 4% by mass or more and 5% by mass or less is preferable.

Alternatively, the compound represented by the above formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2).

In the above formula (X-2), X ¹⁰² and X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms. An alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

In addition, the compound represented by the above formula (X-2) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2-1).

In the above formula (X-2-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited. It is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine three or more types.

The content of the compound represented by the above formula (X-2-1) is 1% by mass or more and 23% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is more preferably 1% by mass or more and 18% by mass or less, more preferably 1% by mass or more and 13% by mass or less, and more preferably 3% by mass or more and 8% by mass or less.

Further, the compound represented by the above formula (X-2-1) used in the liquid crystal composition of the present invention is specifically selected from at least 1 of the group of compounds represented by the formula (39.1) to the formula (39.4). Preferred compounds are preferred, and a compound represented by the formula (39.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (39.2) is preferably 1% by mass or more and 23% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or more and 18% by mass. The mass % or less is more preferably 1% by mass or more and 13% by mass or less is more preferably, and 3 % by mass or more and 8 % by mass or less is particularly preferable.

And a compound of the above formula (39.2) which is a compound represented by the above formula (X-2-1), and further contains a compound represented by the above formula (39.2). In the liquid crystal composition, the total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (39.2) is 10 based on the total mass of the liquid crystal composition. ~35 mass% is preferred, 15-30 mass% is more preferable, and 18-26 mass% is more preferable.

Alternatively, the compound represented by the formula (X-2) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2-2).

In the above formula (X-2-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the above formula (X-2-2) is 3% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 6 mass% or more and 16 mass% or less are preferable, and 9 mass% or more and 12 mass% or less are preferable, and 9 mass% or more and 10 mass% or less are preferable.

In addition, the compound represented by the formula (X-2-2) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (40.1) to the formula (40.4). The compound is preferably a compound represented by the formula (40.2), preferably a compound represented by the formula (40.2).

Alternatively, or in addition, the compound represented by the formula (X) is preferably a compound represented by the formula (X-3).

In the above formula (X-3), X ¹⁰² and X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or a carbon number. 1 to 4 alkoxy groups.

The compound which can be combined is not particularly limited. It is preferable to combine one type or two types or more in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like.

In addition, the compound represented by the above formula (X-3) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-3-1).

In the above formula (X-3-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the above formula (X-3-1) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-3-1) is 0.5% by mass or more and 6% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is carried out in other embodiments. The form is 0.5% by mass or more and 3% by mass or less, and is 0.5% by mass or more and less than 2% by mass in still other embodiments, and is 0.5% by mass or more and 1% by mass or less in still other embodiments.

In addition, the compound represented by the formula (X-3-1) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (41.1) to the formula (41.4). The compound is preferably a compound represented by the formula (41.2).

The content of the compound represented by the above formula (41.2) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (41.2) is 0.5% by mass or more and 6% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 0.5% by mass in other embodiments. The other 3% by mass or less is 0.5% by mass or more and less than 2% by mass in other embodiments, and is 0.5% by mass or more and 1.5% by mass or less in still other embodiments. In the above, the content of the compound represented by the above formula (41.2) is preferably 0.5% by mass or more and less than 2% by mass, and preferably 0.5% by mass or more and 1.5% by mass based on the total mass of the liquid crystal composition of the present invention. The following is better.

a liquid crystal composition containing only a compound of the above formula (ii) and further containing a compound represented by the above formula (41.2) as a compound represented by the above formula (X-3-1), The total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (41.2) is 3 to 20% by mass based on the total mass of the liquid crystal composition. More preferably, 5 to 17% by mass is more preferred, and 8 to 14% by mass is more preferably.

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-4).

In the above formula (X-4), X ¹⁰² represents a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 4 carbon atoms. Oxygen.

The compound which can be combined is not particularly limited, but one or two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more types are combined.

Further, the compound represented by the formula (X-4) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-1).

In the above formula (X-4-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, but one or two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more types are combined.

The content of the compound represented by the above formula (X-4-1) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

The content of the compound represented by the above formula (X-4-1) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or more and 15% by mass or less. It is preferably 1% by mass or more and 10% by mass or less, more preferably 1% by mass or more and less than 5% by mass.

In addition, the compound represented by the formula (X-4-1) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (42.1) to the formula (42.4). The compound is preferably a compound represented by the formula (42.3), preferably a compound represented by the formula (42.3).

The content of the compound represented by the above formula (42.3) is preferably from 1 to 15% by mass, more preferably from 1 to 10% by mass, even more preferably from 1 to 5% by mass based on the total mass of the liquid crystal composition of the present invention. Better.

a liquid crystal containing at least two types of compounds represented by the above formula (ii) and further containing a compound represented by the above formula (42.3) as a compound represented by the above formula (X-4-1) The composition, the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula, with respect to the total mass of the liquid crystal composition The total content of the compound represented by (42.3) is preferably 13 to 31% by mass, more preferably 16 to 28% by mass, and still more preferably 19 to 25% by mass.

In addition, the liquid crystal composition containing at least two types of compounds represented by the above formula (ii), a compound represented by the above formula (42.3), and a compound represented by the above formula (39.2) is contained in the liquid crystal composition. The total mass of the compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (39.2), and the compound represented by the above formula (42.3) is 19 ~37% by mass is preferred, 22 to 34% by mass is more preferred, and 25 to 31% by mass is more preferably.

Alternatively, the compound represented by the above formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-2).

In the above formula (X-4-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, but one or two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more types are combined.

The content of the compound represented by the above formula (X-4-2) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 1% by mass or more and 15% by mass or less is preferably 1% by mass. The above 10% by mass or less is preferable, and 3% by mass or more and 7% by mass or less is preferable.

Further, the compound represented by the above formula (X-4-2) used in the liquid crystal composition of the present invention is specifically selected from at least 1 of the group of compounds represented by the formulae (42.11) to (42.14). The compound is preferably a compound containing a compound represented by the formula (42.13) and/or the formula (42.14).

Alternatively, the compound represented by the above formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-3).

In the above formula (X-4-3), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, but one or two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more types are combined.

The content of the compound represented by the above formula (X-4-3) is 2% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. % or less is preferably 5% by mass or more and 17% by mass or less, preferably 10% by mass or more and 15% by mass or less, and preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the above formula (X-4-3) used in the liquid crystal composition of the present invention is specifically selected from at least 1 of the group of compounds represented by the formulae (42.21) to (42.24). A preferred compound is preferred, and a compound represented by the formula (42.22) is more preferred.

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-5).

In the above formula (X-5), X ¹⁰² represents a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 4 carbon atoms. Oxygen.

The compound which can be combined is not particularly limited, but one or two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more types are combined.

Further, the compound represented by the above formula (X-5) is preferably a compound represented by the formula (X-5-1).

In the above formula (X-5-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, but one or two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more types are combined.

The content of the compound represented by the above formula (X-5-1) is 2% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 5% by mass or more and 17% by mass or less, preferably 10% by mass or more and 15% by mass or less, and preferably 10% by mass or more and 13% by mass or less.

The compound represented by the above formula (X-5-1), specifically, at least one compound selected from the group consisting of compounds represented by formula (43.1) to formula (43.4) is preferred, and the formula thereof is contained therein. The compound represented by (43.2) is preferred.

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-6).

In the above formula (X-6), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the above formula (X-6) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-6) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 to 20 in other embodiments. The mass % is 1 to 15% by mass in other embodiments, and 1 to 11% by mass in other embodiments, and 4 to 11% by mass in still other embodiments.

In addition, the compound represented by the above formula (X-6) is specifically preferably at least one compound selected from the group consisting of compounds represented by formula (44.1) to formula (44.4), and contains a formula ( Compounds represented by 44.1) and/or formula (44.2) are preferred.

The content of the compound represented by the above formula (44.1) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (44.1) is preferably 0.5% by mass or more and 4% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 1% by mass or more and 4% by mass or less. .

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is one type, and further contains the compound represented by the above formula (44.1) as the compound represented by the above formula (X-6). In the case of the total mass of the liquid crystal composition, the total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (44.1) is 3 ~13% by mass is preferred, and 6-11% by mass is more preferred.

In addition, as the compound represented by the above formula (M), the liquid crystal compound of the present invention may contain a compound represented by the formula (X'-7) similar to the compound represented by the above formula (X).

In the above formula (X'-7), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the above formula (X'-7) is appropriately adjusted in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X'-7) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 to 20% in other embodiments. 15% by mass is further 1 to 10% by mass in other embodiments, and 1 to 5% by mass in other embodiments.

Further, the compound represented by the formula (X'-7) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (44.11) to the formula (44.14). A compound is preferred, and a compound represented by the formula (44.13) is more preferred.

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-8).

In the above formula (X-8), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the above formula (X-8) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-8) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 to 20 in other embodiments. The mass % is 1 to 15% by mass in other embodiments, and is 3 to 12% by mass in other embodiments, and 8 to 9% by mass in still other embodiments.

Further, the compound represented by the above formula (X-8), specifically, at least one compound selected from the group consisting of compounds represented by formula (44.21) to formula (44.24) is preferred, and contains a formula ( The compound represented by 44.22) is preferred.

Alternatively, the compound represented by the above formula (X) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XI).

In the above formula (XI), X ¹¹¹ to X ¹¹⁷ each independently represent a fluorine atom or a hydrogen atom, at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms and a carbon atom number. 2 to 5 alkenyl or alkoxy having 1 to 4 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF ₃ .

The compound which can be combined is not particularly limited, but it is considered to have low temperature solubility, transfer temperature, electrical reliability, birefringence, etc., for example, one embodiment of the present invention is one type, and other embodiments are two types, and In other embodiments, it is preferable to combine three or more types.

The content of the compound represented by the above formula (XI) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XI) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, it is 1 to 20% by mass. % is another 1 to 15% by mass in other embodiments, 4 to 15% by mass in other embodiments, and 5 to 15% by mass in other embodiments, and 11 to 11 in other embodiments. 15% by mass, and in other embodiments, it is 4 to 5% by mass, and in still other embodiments, it is 5 to 11% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small liquid crystal cell gap, it is suitable to use a plurality of compounds represented by the above formula (XI). Liquid crystal display element for driving voltage In the case of the article, it is suitable to form a plurality of compounds represented by the above formula (XI). Moreover, in the case of a liquid crystal display element used in a low-temperature environment, it is suitable to make the content of the compound represented by the above formula (XI) small. In the case of a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable to make the content of the compound represented by the above formula (XI) small.

Further, the compound represented by the formula (XI-1) represented by the formula (XI) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XI-1).

In the above formula (XI-1), R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, but it can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type, and two types are used in other embodiments, and three or more types are combined in still another embodiment.

The content of the compound represented by the above formula (XI-1) is considered to be a low temperature solubility, a transfer temperature, an electrical reliability, etc., and one embodiment of the present invention is based on the total mass of the liquid crystal composition of the present invention. 25 mass%, in other embodiments, 1 to 20 mass%, and in other embodiments, 1 to 15 mass%, and in other embodiments, 4 to 15 mass%, and in still other embodiments, 5 ~15% by mass, and again Still other embodiments are 11 to 15% by mass, and in still other embodiments, 4 to 5% by mass, and in still other embodiments, 5 to 11% by mass.

In addition, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the group of compounds represented by the formula (45.1) to the formula (45.4). Preferably, at least one compound selected from the group consisting of compounds represented by formula (45.2) to formula (45.4) is preferred, and a compound represented by formula (45.2) is more preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.2) is one of the present invention in consideration of the solubility at low temperature, the transfer temperature, electrical reliability, and the like, with respect to the total mass of the liquid crystal composition of the present invention. The embodiment is 1 to 25% by mass, and in other embodiments, it is 1 to 20% by mass, and in still other embodiments, it is 1 to 15% by mass. Still other embodiments are 2 to 15% by mass, and in still other embodiments, 2 to 5% by mass.

The content of the compound represented by the above formula (45.3) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., but the compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is appropriately adjusted. In the case of at least two types (preferably two types), the content of the compound represented by the above formula (45.3) is preferably from 0.5 to 8% by mass based on the total mass of the liquid crystal composition of the present invention, 1~ 6% by mass is more preferable, and 3 to 5% by mass is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.4) is one of the present invention in consideration of the solubility at low temperature, the transfer temperature, electrical reliability, and the like, with respect to the total mass of the liquid crystal composition of the present invention. The embodiment is 1 to 25% by mass, and in other embodiments, it is 1 to 20% by mass, and in still other embodiments, it is 1 to 15% by mass, and in still other embodiments, it is 1 to 10% by mass, and further The other embodiment is 2 to 7% by mass, and in still other embodiments, it is 2 to 3% by mass.

Alternatively, the compound represented by the above formula (XI) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XI-2).

In the above formula (XI-2), R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, but it can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like. For example, one embodiment of the present invention is one type, and two types are used in other embodiments, and three or more types are combined in still another embodiment.

The content of the compound represented by the above formula (XI-2) is 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. Preferably, it is preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, more preferably 1% by mass or more and 5% by mass or less, and more preferably 1% by mass or more and 3% by mass or less. good.

Further, the compound represented by the formula (XI-2) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the group of compounds represented by the formulae (45.11) to (45.14). Preferably, at least one compound selected from the group consisting of compounds represented by formula (45.12) to formula (45.14) is preferred, and a compound represented by formula (45.12) is more preferred.

Alternatively, the compound represented by the above formula (X) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XII).

In the above formula (XII), X ¹²¹ to X ¹²⁶ each independently represent a fluorine atom or a hydrogen atom, and R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or 1 to 1 carbon atom. 4 alkoxy, Y ¹² represents a fluorine atom or -OCF ₃ .

The compound which can be combined is not particularly limited, but in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like, it is preferred to combine 1 to 3 or more, and more preferably 1 to 4 or more.

Further, the compound represented by the formula (XII) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XII-1).

In the above formula (XII-1), R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, but it is preferably one or two or more types in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably from 1 to 3 types.

The content of the compound represented by the above formula (XII-1) is 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. It is preferably 2% by mass or more and 10% by mass or less, more preferably 3% by mass or more and 8% by mass or less, and most preferably 4% by mass or more and 6% by mass or less.

In addition, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the group of compounds represented by the formula (46.1) to the formula (46.4). Preferably, at least one compound selected from the group consisting of compounds represented by formula (46.2) to formula (46.4) is preferred.

Alternatively, the compound represented by the above formula (XII) is preferably a compound represented by the formula (XII-2).

In the above formula (XII-2), R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, but it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and preferably one to three or more. .

The content of the compound represented by the above formula (XII-2) is 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. Preferably, it is preferably 3 mass% or more and 20 mass% or less, more preferably 4 mass% or more and 17 mass% or less, more preferably 6 mass% or more and 15 mass% or less, and 9 mass% or more and 13 mass% or less. good.

In addition, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the group of compounds represented by the formula (47.1) to the formula (47.4). Preferably, at least one compound selected from the group consisting of compounds represented by formula (47.2) to formula (47.4) is preferred.

Alternatively, the compound represented by the above formula (M) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XIII).

In the above formula (XIII), X ¹³¹ to X ¹³⁵ each independently represent a fluorine atom or a hydrogen atom, and R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or 1 to 1 carbon atom. 4 alkoxy, Y ¹³ represents a fluorine atom or -OCF ₃ .

The type of the compound which can be combined is not particularly limited, but one or two kinds of these compounds are preferable, and those having 1 to 3 types are more preferable, and those having 1 to 4 types are more preferable.

The content of the compound represented by the above formula (XIII) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIII) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and 1 to 25% by mass in other embodiments. In other embodiments, it is 1 to 20% by mass, and in other embodiments, it is 1 to 16% by mass, and in other embodiments, it is 4 to 20% by mass, and in other embodiments, it is 9 to 20% by mass. % is again 13 to 20% by mass in other embodiments, and 13 to 16% by mass in other embodiments.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small liquid crystal cell gap, it is suitable to use a plurality of compounds represented by the above formula (XIII). In the case of a liquid crystal display element having a small driving voltage, it is suitable to use a plurality of compounds represented by the above formula (XIII). Moreover, in the case of a liquid crystal display element used in a low-temperature environment, it is suitable to make the content of the compound represented by the above formula (XIII) small. In the case of a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable to make the content of the compound represented by the above formula (XIII) small.

Further, the compound represented by the above formula (XIII) is preferably a compound represented by the formula (XIII-1).

In the above formula (XIII-1), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (XIII-1) is preferably contained in an amount of 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 3% by mass or more and 25% by mass or less. It is preferably 5% by mass or more and 20% by mass or less, and more preferably 10% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (XIII-1) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (48.1) to (48.4), and the compound represented by the formula (48.2) is preferably Preferably.

Alternatively, the compound represented by the above formula (XIII) is preferably a compound represented by the formula (XIII-2).

In the above formula (XIII-2), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, but it is preferred to contain 1 or 2 or more of these compounds.

The compound represented by the above formula (XIII-2) is preferably contained in an amount of 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 1% by mass or more and 20% by mass or less. Preferably, it is preferably 1% by mass or more and 16% by mass or less, and more preferably 4% by mass or more and 16% by mass or less. In the above, the compound represented by the above formula (XIII-2) is preferably contained in an amount of 4% by mass or more and 13% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 9% by mass or more and 16% by mass or less. The following are preferred.

Further, the compound represented by the formula (XIII-2) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (49.1) to (49.4), and the formula (49.1) and/or the formula ( The compound represented by 49.2) is preferred.

Alternatively, the compound represented by the above formula (XIII) is preferably a compound represented by the formula (XIII-3).

In the above formula (XIII-3), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but it is preferred to contain 1 to 2 of these compounds.

The compound represented by the above formula (XIII-3) is preferably contained in an amount of 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 1% by mass or more and 15% by mass or less. It is more preferably 5% by mass or more and 15% by mass or less, and particularly preferably 5% by mass or more and 10% by mass or less.

Further, the compound represented by the above formula (XIII-3) is preferably a compound selected from the group consisting of compounds represented by formulas (50.1) to (50.4), and is preferably a compound (50.1) and/or a formula. The compound represented by (50.2) is preferred, and the compound represented by the formula (50.1) is preferred.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is 2 or 3 types, and further contains the above formula (50.1) which is a compound represented by the above formula (XIII-3). In the case of the compound, the content of the compound represented by the above formula (50.1) is preferably 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition, and more preferably 5% by mass or more and 15% by mass or less. Preferably, it is more preferably 5 mass% or more and 10 mass% or less.

The liquid crystal composition of the compound represented by the above formula (50.1) which is a compound represented by the above formula (XIII-3), which contains the compound represented by the above formula (ii) The total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (50.1) is 15 to 35 with respect to the total mass of the liquid crystal composition. The mass % is preferably, 17 to 30% by mass is more preferably, and 20 to 25% by mass is more preferably.

Alternatively, the compound represented by the above formula (M) is preferably a compound represented by the formula (XIII'-1).

In the above formula (XIII'-1), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but it is preferred to contain 1 to 2 of these compounds.

The compound represented by the above formula (XIII'-1) is preferably contained in an amount of 2% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 4% by mass or more and 20% by mass or less. It is preferably 9% by mass or more and 17% by mass or less, and more preferably 12% by mass or more and 15% by mass or less.

Further, the compound represented by the above formula (XIII'-1) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (50.11) to (50.14), and the formula (50.12) and/or The compound represented by the formula (50.14) is preferred.

Alternatively, the compound represented by the above formula (M) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XIV).

In the above formula (XIV), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and X ¹⁴¹ to X ¹⁴⁴ are each independently represented. A fluorine atom or a hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or OCF ₃ , and Q ¹⁴ represents a single bond, -COO- or -CF ₂ O-, and m ¹⁴ is 0 or 1.

The type of the compound that can be combined is not limited, but may be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Furthermore, other embodiments of the present invention are of two types. Alternatively, the present invention is based on three other types. Further, in still another embodiment of the present invention, there are four types. Alternatively, the present invention is based on five other types. Alternatively, the present invention is based on still another embodiment of six or more types.

The content of the compound represented by the above formula (XIV) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIV) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and 1 to 25% by mass in other embodiments. In other embodiments, it is 1 to 20% by weight, and in other embodiments, it is 3 to 20% by mass, and in other embodiments, it is 5 to 20% by mass, and in other embodiments, it is 8 to 20% by mass. % is again 12 to 20% by mass in other embodiments.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small driving voltage, it is suitable to use a plurality of compounds represented by the above formula (XIV). Further, in the case of using a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable to make the content of the compound represented by the above formula (XIV) small.

Further, the compound represented by the formula (XIV) is preferably a compound represented by the formula (XIV-1).

In the above formula (XIV-1), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and Y ¹⁴ represents a fluorine atom. Chlorine atom or -OCF ₃ .

The type of the compound which can be combined is not limited, but it is preferable to combine 1 to 3 types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

Further, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-1).

In the above formula (XIV-1-1), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms.

The content of the compound represented by the above formula (XIV-1-1) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (XIV-1-1) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 8 mass% or more and 30 mass%, and other embodiments are 8% by mass or more and 25% by mass or less, and in other embodiments, 15% by mass or more and 25% by mass or less, and in other embodiments, 17% by mass. The above 23% by mass or less. In the above, the content of the compound represented by the above formula (XIV-1-1) is preferably 8% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is preferably 8% by mass or more. The mass % or less is more preferably 15% by mass or more and 25% by mass or less is more preferably 17% by mass or more and 23% by mass or less.

Further, the compound represented by the formula (XIV-1-1), specifically, at least one compound selected from the group consisting of the compounds represented by the formula (51.1) to the formula (51.4) is preferred, and contains a formula ( The compound represented by 51.1) is more preferred.

The content of the compound represented by the above formula (51.1) is preferably at least 8 mass%, more preferably from 8 mass% to 25 mass%, more preferably from 15 mass% to 25 mass, based on the total mass of the liquid crystal composition of the present invention. % or less is more preferably, and 17% by mass or more and 23% by mass or less are particularly preferable.

Alternatively, or in addition, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-2).

In the above formula (XIV-1-2), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms.

The content of the compound represented by the above formula (XIV-1-2) is 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 1% by mass or more and 10% by mass or less, preferably 1% by mass or more and 5% by mass or less, more preferably 1% by mass or more and 3% by mass or less.

Further, the compound represented by the formula (XIV-1-2), specifically, at least one compound selected from the group consisting of compounds represented by the formulae (52.1) to (52.4) is preferable, and the formula thereof is contained therein. The compound represented by (52.1) is preferred.

Alternatively, the compound represented by the above formula (XIV) is preferably a compound represented by the formula (XIV-2).

In the above formula (XIV-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ¹⁴¹ to X ¹⁴⁴ Independently represents a fluorine atom or a hydrogen atom, and Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ .

The type of the compound which can be combined is not limited, but it is suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Further, other embodiments of the present invention are two types. Alternatively, the present invention is based on three other types. Further, in still another embodiment of the present invention, there are four types. Alternatively, in still another embodiment of the present invention, five or more types are used.

The content of the compound represented by the above formula (XIV-2) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIV-2) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 to 20 in other embodiments. The mass % is 1 to 15% by mass in other embodiments, 5 to 15% by mass in other embodiments, and 6 to 13% by mass in other embodiments, and 8 to 13 in other embodiments. 13% by mass is further 6 to 8 mass% in other embodiments, and 10 to 12 mass% in other embodiments.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small driving voltage, it is suitable to use a plurality of compounds represented by the above formula (XIV-2). Further, in the case of using a liquid crystal composition used for a liquid crystal display element having a high reaction rate, it is suitable to use a compound having a content represented by the above formula (XIV-2).

Further, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-1).

In the above formula (XIV-2-1), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-1) is 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 3 mass% or more and 13 mass% or less are preferable, and 5 mass% or more and 11 mass% or less are preferable, and 7 mass% or more and 9 mass% or less are preferable.

Further, the compound represented by the formula (XIV-2-1), specifically, at least one compound selected from the group consisting of compounds represented by the formulae (53.1) to (53.4) is preferable, and the formula thereof is contained therein. The compound represented by (53.4) is preferred.

Alternatively, the compound represented by the above formula (XIV-2) is preferably a compound represented by the formula (XIV-2-2).

In the above formula (XIV-2-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-2) is 1% by mass or more and 25 mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is more preferably 1% by mass or more and 20% by mass or less, more preferably 3% by mass or more and 18% by mass or less, and particularly preferably 9% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (XIV-2-2), specifically, at least one compound selected from the group consisting of compounds represented by the formulae (54.1) to (54.4) is preferable, and A compound represented by the formula (54.2) and/or the formula (54.4) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (54.2) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or 15% by mass. % or less is more preferably 1% by mass or more and 10% by mass or less is more preferably, and 5 % by mass or more and 10% by mass or less is particularly preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (54.4) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or 15% by mass. % or less is more preferably 1% by mass or more and 10% by mass or less is more preferably, and 3% by mass or more and 8% by mass or less is particularly preferable.

a compound represented by the above formula (54.2) containing a compound represented by the above formula (II) and containing the compound represented by the above formula (XIV-2-2) and the above formula ( 54.4) The liquid crystal composition of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the formula (54.2), based on the total mass of the liquid crystal composition. The total content of the compound and the compound represented by the above formula (54.4) is preferably 17 to 35 mass%, more preferably 20 to 32 mass%, and still more preferably 23 to 29 mass%.

Alternatively, the compound represented by the above formula (XIV-2) is preferably a compound represented by the formula (XIV-2-3).

In the above formula (XIV-2-3), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-3) is 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 9% by mass or more and 27% by mass or less is preferably 12% by mass or more and 24% by mass or less, and preferably 12% by mass or more and 20% by mass or less.

Further, the compound represented by the formula (XIV-2-3), specifically, at least one compound selected from the group consisting of compounds represented by the formulae (55.1) to (55.4) is preferable, and the formula thereof is contained therein. The compound represented by (55.2) and/or formula (55.4) is preferred.

Alternatively, the compound represented by the above formula (XIV-2) is preferably a compound represented by the formula (XIV-2-4).

In the above formula (XIV-2-4), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, but it is suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Further, other embodiments of the present invention are two types. Alternatively, the other embodiments of the present invention are three or more types.

The content of the compound represented by the above formula (XIV-2-4) is appropriately adjusted in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIV-2-4) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~20% by mass, in other embodiments, 1 to 15% by mass, and in other embodiments, 1 to 10% by mass, and in other embodiments, 3 to 10% by mass, and in other embodiments 6~8 mass%.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small driving voltage, it is suitable to use a plurality of compounds represented by the above formula (XIV-2-4). Further, in the case of using a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is preferable to make the content of the compound represented by the above formula (XIV-2-4) small.

Further, the compound represented by the above formula (XIV-2-4), specifically, at least one compound selected from the group consisting of compounds represented by formula (56.1) to formula (56.4) is preferable, and contains A compound represented by the formula (56.1), the formula (56.2), and/or the formula (56.4) is preferred, and a compound represented by the formula (56.2) is preferred.

Alternatively, the compound represented by the above formula (XIV-2) is preferably a compound represented by the formula (XIV-2-5).

In the above formula (XIV-2-5), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-5) is 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % The following is preferable, and 10% by mass or more and 22% by mass or less are preferable, and 13% by mass or more and 18% by mass or less are preferable, and 13% by mass or more and 15% by mass or less is preferable.

In addition, the compound represented by the above formula (XIV-2-5) is specifically a compound selected from at least one of the group of compounds represented by the formula (57.1) to the formula (57.4). Among them, a compound represented by the formula (57.1) is preferred.

Alternatively, or in addition, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-6).

In the above formula (XIV-2-6), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-6) is 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 10% by mass or more and 22% by mass or less is preferable, and 15% by mass or more and 20% by mass or less are preferable, and 15% by mass or more and 17% by mass or less is preferable.

Further, the compound represented by the above formula (XIV-2-6), specifically, at least one compound selected from the group consisting of compounds represented by formula (58.1) to formula (58.4) is preferred, and contains The compound represented by the formula (58.2) is preferred.

Alternatively, or in addition, the compound represented by the above formula (XIV) is preferably a compound represented by the formula (XIV-3).

In the above formula (XIV-3), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Type of compound used, examples For example, in one embodiment of the present invention, it is a type. Or other embodiments of the present invention are two or more types.

The content of the compound represented by the above formula (XIV-3), The low temperature solubility, the transfer temperature, the electrical reliability, the birefringence, and the like are preferably 2.5% by mass or more and 25% by mass or less, and 3% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention. The following is preferable, and 3 mass% or more and 10 mass% or less are preferable.

Further, the compound represented by the above formula (XIV-3) is specifically preferably at least one compound selected from the group consisting of compounds represented by formula (61.1) to formula (61.4), and formula (61.1) And / or a compound represented by the formula (61.2) is more preferable.

Alternatively, the compound represented by the above formula (M) is preferably a compound represented by the formula (XV).

In the above formula (XV), R ¹⁵⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ¹⁵¹ represents 1,4-extension. A cyclohexyl group or a 1,4-phenylene group, but the hydrogen atom on the aforementioned 1,4-phenylene group may be substituted by a fluorine atom.

The compound which can be combined is not particularly limited, but it is suitably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. In still other embodiments, there are three types. Further, in other embodiments, there are four types. Further, in other embodiments, five or more types are used.

The content of the compound represented by the above formula (XV) is appropriately adjusted in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, the content of the compound represented by the above formula (XV) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 to 20% by mass in other embodiments. Further, in other embodiments, it is 1 to 15% by mass, and in other embodiments, it is 5 to 15% by mass, and in other embodiments, it is 8 to 9% by mass.

The compound represented by the above formula (XV) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XV-1).

In the above formula (XV-1), R ¹⁵⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the above formula (XV-1) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XV-1) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 to 20 in other embodiments. The mass % is 1 to 10% by mass in other embodiments, 3 to 10% by mass in other embodiments, and 4 to 7 mass% in other embodiments, and 1 to 1 in other embodiments. 5 mass%, and in other embodiments, 5 to 10% by mass.

In addition, the compound represented by the formula (XV-1) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the group of compounds represented by the formula (59.1) to the formula (59.4). Preferably, the compound represented by the formula (59.2) is more preferably contained.

Alternatively, the compound represented by the above formula (XV) is preferably a compound represented by the formula (XV-2).

In the above formula (XV-2), R ¹⁵⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the above formula (XV-2) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XV-2) is considered to be the mass of the liquid crystal composition of the present invention in consideration of the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, and the like. More preferably, it is more preferably 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, more preferably 5% by mass or more and 15% by mass or less, and particularly preferably 8% by mass or more and 9% by mass or less.

In addition, the compound represented by the formula (XV-2) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the group of compounds represented by the formula (60.1) to the formula (60.4). Preferably, the compound represented by the formula (60.1) and/or the formula (60.2) is more preferably contained.

The liquid crystal composition containing the compound of the 2-3 types of the compound represented by the above formula (ii) contains the compound represented by the above formula (60.1) which is a compound represented by the above formula (XV-2) and The compound represented by the above formula (60.2) is preferred. The compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (60.1), and the formula (60.2) are represented by the total mass of the liquid crystal composition. The total content of the compound is preferably 15 to 33% by mass, more preferably 18 to 30% by mass, and still more preferably 21 to 27% by mass.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (XVI) having a structure similar to the above formula (M) as a chiral agent.

In the above formula (XVI), R ¹⁶⁰ represents an alkyl group having 9 or 10 carbon atoms, X ¹⁶¹ to X ¹⁶³ represents a hydrogen atom or a fluorine atom, K ¹⁶⁰ represents a single bond or -CH ₂ CH ₂ -, and P ¹⁶⁰ represents 1 , 2, or 3.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two or more types.

The content of the compound represented by the above formula (XVI) is considered to be 2.5% by mass or more and 25% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The following is preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3 mass% or more and 10 mass% or less are preferable.

Further, the compound represented by the above formula (XVI), specifically, at least one compound selected from the group consisting of compounds represented by formula (62.1) to formula (62.3) is preferred, and formula (62.1) and/or Or a compound represented by the formula (62.2) is preferred.

It is preferred to adjust the content of the compound represented by the above formula (62.1) in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and the compound is relative to the liquid crystal composition of the present invention. The total mass is preferably 0.1 to 1% by mass, more preferably 0.1 to 0.5% by mass.

It is preferred to adjust the content of the compound represented by the above formula (62.2) in view of the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and the compound is relative to the liquid crystal composition of the present invention. The total mass is preferably 0.1 to 1% by mass, preferably 0.1 to 0.5% by mass, more preferably 0.1 to 0.3% by mass, and most preferably 0.1 to 0.2% by mass.

The liquid crystal composition of the present invention is preferably a compound having a structure in which an oxygen atom having a peracid (-CO-OO-) structure or the like is bonded to each other in the molecule.

In the case of the reliability of the liquid crystal composition and the long-term stability, the content of the compound having a carbonyl group is preferably 5% by mass or less based on the total mass of the composition, and more preferably 3% by mass or less. % below is better, and substantially not included is optimal.

When the stability due to the UV irradiation is emphasized, the content of the chlorine atom-substituted compound is preferably 15% by mass or less based on the total mass of the composition, and more preferably 10% by mass or less, and more preferably 5% by mass or less. For better, it is not optimal for inclusion.

It is preferable to form a compound having a 6-membered ring structure in the molecule, and the content of the compound having a ring structure of 6 members in the molecule is 80% by mass or more based on the total mass of the composition. Preferably, it is more preferably 90% by mass or more, more preferably 95% by mass or more, and substantially only a compound having a ring structure of 6 in the molecule is a liquid crystal composition.

In order to suppress deterioration due to oxidation of the liquid crystal composition, it is preferred to reduce the content of the compound having a cyclohexene group as a ring structure, and the content of the compound having a cyclohexene group relative to the above composition The total mass is preferably 10% by mass or less, more preferably 5% by mass or less, and substantially no content is preferable.

In the case where the improvement of the viscosity and the improvement of the Tni are emphasized, it is preferable that the content of the compound having a hydrogen atom in which a hydrogen atom can be substituted with a 2-methylbenzene-1,4-diyl group of a halogen is preferable. The content of the compound of 2-methylbenzene-1,4-diyl is preferably 10% by mass or less based on the total mass of the above-mentioned composition, more preferably 5% by mass or less, and substantially no content is preferable. .

In the case where the compound contained in the composition of the first embodiment of the present invention has an alkenyl group as a side chain, in the case where the alkenyl group is bonded to cyclohexane, the number of carbon atoms of the alkenyl group is preferably 2 to 5. When the alkenyl group is bonded to a benzene group, the number of carbon atoms of the alkenyl group is preferably 4 to 5, and the unsaturated bond of the alkenyl group is not directly bonded to benzene.

In order to produce a liquid crystal display element such as a PS mode, a lateral electric field type PSA mode or a lateral electric field type PSVA mode, the liquid crystal composition of the present invention may contain a polymerizable compound. For the polymerizable compound which can be used, a photopolymerizable monomer which is polymerized by an energy ray such as light can be exemplified, and as a structure, for example, a six member having a biphenyl derivative or a triphenyl derivative can be exemplified. The ring is a polymerizable compound of a liquid crystal skeleton which is plurally linked, and the like. More specifically, a difunctional monomer represented by the formula (XX) is preferred.

In the above formula (XX), X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group, and Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH _{2 ). s} - (wherein, s represents an integer of 2 to 7, an oxygen atom is bonded to an aromatic ring), and Z ²⁰¹ represents -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO- CH=CH-, -COO-CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -CH ₂ CH ₂ -COO-, -CH ₂ CH ₂ -OCO-, -COO-CH ₂ -, -OCO -CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CY ¹ =CY ² - (wherein, Y ¹ and Y ² each independently represent a fluorine atom or a hydrogen atom), -C≡C- Or a single bond, M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and all of the 1,4-phenylene groups in the formula may be a fluorine atom. Replace.

Any one of a diacrylate derivative in which one of X ²⁰¹ and X ²⁰² represents a hydrogen atom, or a dimethacrylate derivative having a methyl group is preferred, and one of them represents a hydrogen atom and the other A compound representing a methyl group is also preferred. The rate of polymerization of these compounds is the fastest in diacrylate derivatives, the slowest in dimethacrylate derivatives, and the middle of asymmetric compounds, depending on the application. Dimethacrylate derivatives are particularly preferred for PSA display elements.

Sp ²⁰¹ and Sp ²⁰² are each independently represented by a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -, but it is preferred that at least one of the PSA display elements is a single bond. The compound which represents a single bond or one of which is a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - is preferred. In this case, an alkyl group having 1 to 4 carbon atoms is preferred, and an s system of 1 to 4 is preferred.

Z ²⁰¹ is -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, or a single bond Preferably, -COO-, -OCO-, or a single bond is preferred, and a single bond is particularly preferred.

M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which any hydrogen atom may be substituted by a fluorine atom, but a 1,4-phenylene group or a single bond is preferred. M ²⁰¹ represents a ring structure other than a single bond, and Z ²⁰¹ is preferably a linking group other than a single bond, and M ²⁰¹ is a single bond, and a Z ²⁰¹ single bond is preferable.

From the viewpoints of the above, the ring structure between the general formula (XX), Sp ²⁰¹ and Sp ²⁰² is specifically a structure described below.

In the above formula (XX), M ²⁰¹ represents a single bond, and the ring structure is formed by two rings, and the following formula (XXa-1) to formula (XXa-5) is preferred, and the formula (XXa-) is represented by the formula (XXa-). 1) The formula (XXa-3) is more preferable, and the expression (XXa-1) is particularly preferable.

In the above formula (XXa-1) to formula (XXa-5), both ends are bonded to Sp ²⁰¹ or Sp ²⁰² .

The polymerizable compound containing these skeletons is most suitable for the PSA type liquid crystal display element after polymerization, and the display unevenness is suppressed or does not occur at all because a good alignment state is obtained.

From the above, it is preferred that the polymerizable monomer is at least one compound selected from the group consisting of the compounds represented by the general formulae (XX-1) to (XX-4), wherein the formula (XX- 2) The compound represented is more preferred.

In the above formula (XX-3) and formula (XX-4), Sp ²⁰ represents an alkylene group having 2 to 5 carbon atoms.

In the case where a monomer is added to the liquid crystal composition of the present invention, the polymerization proceeds even if the polymerization initiator is not present, but a polymerization initiator may be contained in order to promote the polymerization. The polymerization initiator may, for example, be a benzoin ether, a benzophenone, an acetophenone, a benzil ketal or a hydrazine. Acylphosphine oxides and the like.

The liquid crystal composition in the present invention may further contain a compound represented by the formula (Q) as an antioxidant.

In the above formula (Q), R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or more of the CH ₂ groups in the alkyl group are not directly adjacent to each other with an oxygen atom. By way of -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, M ^Q represents trans - 1,4-cyclohexylene, 1,4-phenylene, or a single bond.

R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or more of the CH ₂ groups in the alkyl group may be -O- in such a manner that the oxygen atoms are not directly adjacent to each other. , -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, but a linear alkyl group having 1 to 20 carbon atoms, A linear alkoxy group, a CH ₂ group substituted with -OCO- or -COO-, a linear alkyl group, a branched alkyl group, a branched alkoxy group, and a CH ₂ group substituted with -OCO- Or a branched alkyl group of -COO- is preferably a linear alkyl group having 1 to 10 carbon atoms, and a CH ₂ group having 1 or ₂ is substituted with a linear alkyl group of -OCO- or -COO-, a branched alkane More preferably, the branched, branched alkoxy group, and one CH ₂ group are substituted with a branched alkyl group of -OCO- or -COO-.

M ^Q represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, but a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferred.

The compound represented by the above formula (Q) is preferably at least one compound selected from the group consisting of compounds represented by the following formulae (Qa) to (Qd), and the formula (Qa) and / Or the compound represented by (Qc) is more preferable.

In the above formula, R ^Q1 is preferably a linear alkyl group or a branched alkyl group having 1 to 10 carbon atoms, and R ^Q2 is preferably a linear alkyl group or a branched alkyl group having 1 to 20 carbon atoms. R ^Q3 is preferably a linear alkyl group having 1 to 8 carbon atoms, a branched alkyl group, a linear alkoxy group or a branched alkoxy group, and the L ^Q is a linear alkyl group having 1 to 8 carbon atoms. Or a branched alkyl group is preferred. In the above, the compound represented by the formula (Q) is preferably a compound represented by the following formula (Qa-1) and/or (Qc-1).

In the liquid crystal composition of the present invention, one or two kinds of compounds represented by the above formula (Q) are preferred, and one to five kinds are more preferably contained in an amount relative to the liquid crystal composition of the present invention. The total mass is preferably 0.001 to 1% by mass, preferably 0.001 to 0.1% by mass, more preferably 0.001 to 0.05% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains at least one type of compound represented by the above formula (I-1-2) and the aforementioned The liquid crystal composition of at least one type of compound represented by the formula (XIII-3), the compound represented by the above formula (i), the compound represented by the above formula (ii), and the total mass of the liquid crystal composition. The total content of the compound represented by the above formula (I-1-2) and the compound represented by the above formula (XIII-3) is preferably from 55 to 70% by mass, more preferably from 57 to 68% by mass. 60 to 65 mass% is more preferable.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains at least one kind of compound represented by the above formula (I-1-2) and the above formula. a liquid crystal composition of at least one type of compound represented by (X-2-1), relative to the The total mass of the liquid crystal composition, the compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (I-1-2), and the above formula (X- 2-1) The total content of the compound represented is preferably from 60 to 80% by mass, more preferably from 62 to 78% by mass, still more preferably from 65 to 75% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains at least one kind of compound represented by the above formula (I-1-2) and the above formula. The liquid crystal composition of at least one type of compound represented by (IX-2-1) and at least one type of compound represented by the above formula (X-1-1) is the same as the total mass of the liquid crystal composition. a compound represented by the formula (i), a compound represented by the above formula (ii), a compound represented by the above formula (I-1-2), a compound represented by the above formula (IX-2-1), The total content of the compound represented by the above formula (X-1-1) is preferably from 80 to 95% by mass, more preferably from 82 to 93% by mass, still more preferably from 85 to 90% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains at least one type of compound represented by the above formula (I-1-2) and the aforementioned The liquid crystal composition of at least one type of the compound represented by the formula (X-2-1) and at least one type of the compound represented by the above formula (X-4-1) is based on the total mass of the liquid crystal composition. The compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (I-1-2), and the compound represented by the above formula (X-2-1) The total content of the compound represented by the above formula (X-4-1) is preferably 65 to 85% by mass, more preferably 70 to 80% by mass, more preferably 73 to 78% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains at least one type of compound represented by the above formula (I-1-2) and the aforementioned At least one type of compound represented by formula (IX-1-1) and at least one type of compound represented by the above formula (IX-2-2) and at least one represented by the above formula (IX-2-5) The liquid crystal composition of the compound of the first type, the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula (I-1-2) with respect to the total mass of the liquid crystal composition. The compound represented by the above formula (IX-1-1), the compound represented by the above formula (IX-2-2), and the compound represented by the above formula (IX-2-5) The total content is preferably 60 to 75% by mass, more preferably 63 to 72% by mass, and more preferably 65 to 70% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains at least one kind of compound represented by the above formula (I-1-2) and the above formula. a liquid crystal composition of at least one type of compound represented by (X-1-1) and at least one type of compound represented by the above formula (XI-1), and the above formula (for the total mass of the liquid crystal composition) i) the compound represented by the above formula (ii), the compound represented by the above formula (I-1-2), the compound represented by the above formula (X-1-1), and the aforementioned The total content of the compound represented by the formula (XI-1) is preferably from 70 to 90% by mass, more preferably from 72 to 85% by mass, still more preferably from 74 to 82% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention has 2 or 3 types, and further contains at least one type of compound represented by the above formula (I-1-2) and the above formula ( 2.5) Table The liquid crystal composition of the compound of the above formula, the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula (I-1-2), based on the total mass of the liquid crystal composition. The total content of the compound represented by the above formula (2.5) is preferably 70 to 90% by mass, more preferably 73 to 85% by mass, still more preferably 75 to 82% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of three types represented by the above formula (ii-1), and further contains the compound represented by the above formula (XIII-3). a compound of at least one type (preferably one type), a compound of at least one type (preferably one type) represented by the above formula (XIV-1), a compound represented by the above formula (62.1), and the aforementioned a liquid crystal composition of at least one type (preferably one type) of a compound represented by the formula (Qc), and a compound represented by the above formula (i) and the above formula (ii) with respect to the total mass of the liquid crystal composition The compound represented by the above formula (XIII-3), the compound represented by the above formula (XIV-1), the compound represented by the above formula (62.1), and the formula (Qc) The total content of the compound is preferably from 18 to 32% by mass, more preferably from 20 to 30% by mass, and even more preferably from 23 to 27% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of two types represented by the above formula (ii-1), and further contains the above formula (X-2-1). a liquid crystal composition of at least one type (preferably one type) of the compound and at least one type (preferably one type) of the compound represented by the above formula (Qc), with respect to the total of the liquid crystal composition The compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (X-2-1) The total content of the compound and the compound represented by the above formula (Q-c) is preferably 13 to 28% by mass, more preferably 15 to 25% by mass, still more preferably 18 to 22% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of two types represented by the above formula (ii-1), and further contains the above formula (IX-2-1). The liquid crystal composition of at least one type (preferably two types) of the compound represented by the above formula (12.4) and the compound represented by the above formula (i) and the aforementioned The total content of the compound represented by the formula (II), the compound represented by the above formula (IX-2-1), and the compound represented by the above formula (12.4) is preferably 30 to 45% by mass, preferably 33~ 42% by mass is more preferable, and 35 to 39% by mass is more preferable.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of two types represented by the above formula (ii-1), and further contains the above formula (X-2-1). a liquid crystal composition of at least one type (preferably one type) of the compound and at least one type (preferably one type) of the compound represented by the above formula (X-4-1), with respect to the liquid crystal composition The total mass of the substance, the compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (X-2-1), and the above formula (X-4-) 1) The total content of the compound represented is preferably from 20 to 35 mass%, more preferably from 23 to 32 mass%, still more preferably from 25 to 30 mass%.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of two types represented by the above formula (ii-1), and further contains the compound represented by the above formula (II-2). At least 1 type (more a liquid crystal composition of a compound of one type) and a compound of at least one type (preferably one type) represented by the above formula (IX-2-2), and the above formula with respect to the total mass of the liquid crystal composition (i) Total content of the compound represented by the above formula, the compound represented by the above formula (ii), the compound represented by the above formula (II-2), and the compound represented by the above formula (IX-2-2) It is preferably 35 to 50% by mass, more preferably 38 to 47% by mass, and more preferably 40 to 45% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of two types represented by the above formula (ii-1), and further contains the compound represented by the above formula (II-2). a compound of at least one type (preferably one type), a compound represented by the above formula (12.4), and a compound of at least one type (preferably one type) represented by the above formula (Qa), and does not contain the aforementioned The liquid crystal composition of the compound represented by the formula (2.5), the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula (II-) with respect to the total mass of the liquid crystal composition. 2) The total content of the compound represented by the compound, the compound represented by the above formula (12.4), and the compound represented by the above formula (Qa) is preferably 35 to 45% by mass, more preferably 38 to 47% by mass. 40~45% by mass is even better.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of two types represented by the above formula (ii-1), and further contains the compound represented by the above formula (II-2). At least one type (preferably one type) of the compound, a compound represented by the above formula (2.5), a compound represented by the above formula (12.4), and at least one type represented by the above formula (Qa) (preferably The liquid crystal composition of the compound of the first type), the compound represented by the above formula (i) with respect to the total mass of the liquid crystal composition The compound represented by the above formula (ii), the compound represented by the above formula (II-2), the compound represented by the above formula (2.5), the compound represented by the above formula (12.4), and the above formula The total content of the compound represented by (Qa) is preferably 67 to 83% by mass, more preferably 70 to 80% by mass, and even more preferably 73 to 77% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of two types represented by the above formula (ii-1), and further contains the compound represented by the above formula (II-2). At least one type (preferably one type) of the compound, the compound represented by the above formula (2.5), and the compound represented by the above formula (12.4), and does not contain the liquid crystal composition of the compound represented by the above formula (Qa) The compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (II-2), and the above formula (2.5) with respect to the total mass of the liquid crystal composition. The total content of the compound represented by the above formula (12.4) is preferably 75 to 88% by mass, more preferably 77 to 85% by mass, still more preferably 79 to 83% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of two types represented by the above formula (ii-2), and further contains at least 1 represented by the above formula (Qa). The content of the compound represented by the above formula (Qa) is preferably 0.01 to 1% by mass, preferably 0.01%, based on the total mass of the liquid crystal composition of the liquid crystal composition of the compound of the type (preferably 1 type). 0.5% by mass is more preferable, and 0.02 to 0.1% by mass is more preferably.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a combination of one type represented by the above formula (ii-2) Further, at least one type (preferably one type) of the compound represented by the above formula (I-2) and at least one type (preferably one type) represented by the above formula (I-5) are further contained. The compound, at least one type (preferably two types) of the compound represented by the above formula (II-2), and at least one type (preferably one type) represented by the above formula (IX-2-2) The compound, at least one type (preferably one type) of the compound represented by the above formula (X-3-1), and at least one type (preferably one type) represented by the above formula (X-6) The liquid crystal composition of the compound of the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (I-2) with respect to the total mass of the liquid crystal composition a compound, a compound represented by the above formula (I-5), a compound represented by the above formula (II-2), a compound represented by the above formula (IX-2-2), and the above formula (X-3) The total content of the compound represented by the above formula (X-6) is preferably 53 to 65 mass%, more preferably 55 to 63 mass%, and 57 to 61 mass%. Better yet.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of the above formula (ii-1), and further contains the above formula (IXV-2-2). The liquid crystal composition of at least one type (preferably two types) of the compound, the compound represented by the above formula (i), the compound represented by the above formula (ii), and the total mass of the liquid crystal composition. The total content of the compound represented by the above formula (IXV-2-2) is preferably from 20 to 33% by mass, more preferably from 22 to 30% by mass, still more preferably from 24 to 28% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a combination of one type represented by the above formula (ii-2) Further, it further contains at least one type (preferably one type) of the compound represented by the above formula (II-2) and at least one type (preferably 1) represented by the above formula (IX-2-2). a compound of the type) and a compound of at least one type (preferably two types) represented by the above formula (X-6), and does not contain a liquid crystal composition of the compound represented by the above formula (I-2). The compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (II-2), and the above formula (IX-) with respect to the total mass of the liquid crystal composition. 2-2) The total content of the compound represented by the above formula (X-6) is preferably 30 to 45% by mass, more preferably 33 to 43% by mass, and more preferably 35 to 40% by mass. For even better.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of the above formula (ii-1), and further contains the compound represented by the above formula (I-5). a liquid crystal composition of at least one type (preferably one type) of a compound and at least one type (preferably two types) of the compound represented by the above formula (II-2), with respect to the total of the liquid crystal composition The compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (I-5), and the compound represented by the above formula (II-2) The total content is preferably from 35 to 50% by mass, more preferably from 38 to 48% by mass, and even more preferably from 40 to 45% by mass.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is a compound of the above-described formula (ii-1), and further contains the compound represented by the above formula (I-2). At least one type (preferably three types) of the compound, at least one type (preferably two types) of the compound represented by the above formula (IX-2-3), and the above formula (XIV-1) The liquid crystal composition of at least one type (preferably one type) of the compound, the compound represented by the above formula (i), the compound represented by the above formula (ii), and the total mass of the liquid crystal composition. The total content of the compound represented by the above formula (I-2), the compound represented by the above formula (IX-2-3), and the compound represented by the above formula (XIV-1) is 65 to 80 by mass. % is better, 68 to 78% by mass is more preferable, and 70 to 75% by mass is more preferable.

<Liquid crystal display element>

The liquid crystal composition containing the polymerizable compound of the present invention is a liquid crystal in which the polymerizable compound contained in the polymerizable compound is polymerized under ultraviolet irradiation to impart a liquid crystal alignment ability, and the amount of transmitted light is controlled by the birefringence of the liquid crystal composition. Display component. As for the liquid crystal display element, it can be used for ECB-LCD, VA-LCD, VA-IPS-LCD, FFS-LCD, AM-LCD (Active Matrix Liquid Crystal Display Element), TN (Nematic Liquid Crystal Display Element), STN - LCD (twisted nematic liquid crystal display element), OCB-LCD, and IPS-LCD (planar conversion liquid crystal display element), but particularly for AM-LCD, can be used for a transmissive or reflective liquid crystal display element.

For the two substrates of the liquid crystal cell used for the liquid crystal display element, glass or a soft and transparent material such as plastic may be used, or one of them may be an opaque material such as tantalum. The transparent substrate having a transparent electrode layer can be obtained, for example, by sputtering indium tin oxide (ITO) on a transparent substrate such as a glass plate.

For example, a color filter can be produced by a pigment dispersion method, a printing method, an electrodeposition method, a dyeing method, or the like. A method of forming a color filter by a pigment dispersion method will be described as an example, and a color filter is used. The curable coloring composition is applied onto the transparent substrate, subjected to a pattern forming treatment, and hardened by heating or light irradiation. This step can be performed as a color element for a color filter by performing three colors of red, green, and blue. Further, a pixel electrode provided with an active element such as a TFT or a thin film diode may be provided on the substrate.

The substrate is oriented such that the transparent electrode layer is inside. At this time, the interval between the substrates can also be adjusted by the spacer. At this time, it is preferable to adjust the thickness of the obtained light control layer to 1 to 100 μm. It is more preferable that 1.5 to 10 μm is used, and in the case of using a polarizing plate, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the thickness d of the liquid crystal cell in such a manner that the contrast is maximized. Further, in the case of two polarizing plates, the polarizing axes of the respective polarizing plates can be adjusted to adjust the viewing angle or contrast to be good. Further, a phase difference film for increasing the viewing angle can also be used. The spacer may, for example, be a columnar spacer including glass particles, plastic particles, alumina particles, a photoresist material, or the like. Thereafter, a sealant such as an epoxy thermosetting composition is screen-printed on the substrate in a shape in which a liquid crystal injection port is provided, and the substrates are bonded to each other to heat and cure the sealant.

A method of sandwiching a liquid crystal composition containing a polymerizable compound between two substrates can be carried out by a usual vacuum injection method or ODF method. However, although the vacuum injection method does not cause a dripping mark, there is a problem that the injected trace remains, but in the present invention, it can be preferably used for a display element manufactured by the ODF method. In the manufacturing process of the liquid crystal display element of the ODF method, on the substrate of either the back plane or the front plane, the epoxy-based photothermal heat is used together with a sealant such as hardenability, and a dispenser is used. (dispenser) is drawn in the form of a closed circuit, in which a liquid crystal display element is produced by dropping a predetermined amount of the liquid crystal composition under degassing by bonding the front plate and the back plate. Since the liquid crystal composition of the present invention is stably carried out by dropping the liquid crystal composition in the ODF step, it can be preferably used.

In the method of polymerizing a polymerizable compound, in order to obtain a good alignment property of a liquid crystal, an appropriate polymerization rate is desired, and polymerization is carried out by irradiating an active energy ray such as ultraviolet rays or electron beams in a single or in combination or sequentially. The method is preferred. In the case of using ultraviolet rays, a polarized light source or a non-polarized light source may be used. In the case where the liquid crystal composition containing the polymerizable compound is polymerized in a state of being sandwiched between two substrates, at least the substrate on the irradiation surface side must have appropriate transparency for the active energy ray. Further, when a specific portion is polymerized by using a mask after light irradiation, the alignment state of the unpolymerized portion is changed by changing conditions such as an electric field, a magnetic field, or a temperature, and further, polymerization can be performed by using an irradiation active energy ray. s method. In particular, in the case of ultraviolet light exposure, it is preferred to perform ultraviolet exposure while applying an alternating electric field to the liquid crystal composition containing the polymerizable compound. The applied alternating electric field is preferably an alternating current having a frequency of 10 Hz to 10 kHz, and a frequency of 60 Hz to 10 kHz is more preferable, and the voltage is selected in accordance with a desired pre-tilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display element of the transverse electric field type MVA mode, it is preferable to control the pretilt angle to 80 to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably in a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. The polymerizer is preferred at a temperature close to room temperature, i.e., typically at a temperature of from 15 to 35 °C. As the lamp for causing ultraviolet rays, a metal halide lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like can be used. Further, in terms of the wavelength of the ultraviolet ray to be irradiated, it is preferred to irradiate the ultraviolet ray in the wavelength region of the absorption wavelength region of the non-liquid crystal composition, and it is preferable to use the ultraviolet ray to remove the ultraviolet ray. The intensity of the ultraviolet ray to be irradiated is preferably 0.1 mW/cm ² to 100 W/cm ^{2 , more} preferably 2 mW/cm ² to 50 W/cm ² . The energy of the ultraviolet ray to be irradiated can be appropriately adjusted, but it is preferably 10 mJ/cm ² to 500 J/cm ^{2 , more} preferably 100 mJ/cm ² to 200 J/cm ² . When the ultraviolet rays are irradiated, the intensity can be changed. The time for irradiating the ultraviolet rays is appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, but 10 seconds to 3600 seconds is preferable, and 10 seconds to 600 seconds is more preferable.

The liquid crystal display element using the liquid crystal composition of the present invention is useful for both high-speed reaction and display deterioration, and is particularly useful for active matrix drive liquid crystal display elements, and is applicable to VA mode, PSVA mode, PSA mode, and IPS. (in-plane switching) mode, VA-IPS mode, FSS (fringe field switching) mode, or liquid crystal display element for ECB mode.

Hereinafter, preferred embodiments of the liquid crystal display device of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a cross-sectional view showing a liquid crystal display element including two substrates facing each other, a sealing material provided between the substrates, and a liquid crystal sealed in a sealing region surrounded by the sealing material.

Specifically, a liquid crystal display element is provided, and a TFT layer 102 and a pixel electrode 103 are provided on the first substrate 100, and a passivation film 104 and a first layer are provided thereon. The back plate of the alignment film 105 is provided with a black matrix 202, a color filter 203, a planarization film (overcoat layer) 201, and a transparent electrode 204 on the second substrate 200, and a second electrode is provided thereon. An alignment film 205, a front plate facing the back plate, a sealing material 301 provided between the substrates, and a liquid crystal layer 303 sealed in a sealing region surrounded by the sealing material, and a substrate adjacent to the sealing material 301 Protrusions (columnar spacers) 302, 304 are provided on the surface.

The first substrate or the second substrate may be substantially transparent, and the material is not particularly limited, and glass, ceramics, plastic, or the like can be used. For the plastic substrate, cellulose derivatives such as cellulose, triethyl fluorenyl cellulose, and diethyl hydrazine cellulose; polycycloolefin derivatives, polyethylene terephthalate, and poly naphthalene dicarboxylic acid can be used. Polyesters such as ethylene glycol; polyolefins such as polypropylene, polyethylene, polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyimine Indoleamine, polystyrene, polyacrylate, polymethyl methacrylate, polyether oxime, polyarylate compound, inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, etc. .

When a plastic substrate is used, a barrier film is preferably used. The function of the barrier film has the reliability of lowering the moisture permeability of the plastic substrate and improving the electrical characteristics of the liquid crystal display element. The barrier film is not particularly limited as long as it has high transparency and low water vapor permeability. In general, an inorganic material such as cerium oxide is used by vapor deposition or sputtering, and chemical vapor deposition. A film formed by a (CVD method).

In the present invention, the first material or the second substrate may be the same material or a different material, and is not particularly limited. set. When a glass substrate is used, a liquid crystal display element excellent in heat resistance and dimensional stability can be produced. Further, in the case of a plastic substrate, it is preferably a method of manufacturing a roll-to-roll process and is suitable for weight reduction or flexibility. Moreover, for the purpose of imparting flatness and heat resistance, good results can be obtained when a plastic substrate and a glass substrate are combined.

Further, in the embodiment described later, a substrate which is a material of the first substrate 100 or the second substrate 200 is used.

The TFT substrate 102 and the pixel electrode 103 are provided on the first substrate 100 on the back sheet. These are manufactured in a conventional array process. A passivation film 104 and a first alignment film 105 are provided thereon to obtain a back sheet.

The passivation film 104 (also referred to as an inorganic protective film) is a film for protecting the TFT layer, and a nitride film (SiNx), an oxide film (SiOx), or the like is usually formed by a chemical vapor deposition (CVD) technique or the like.

Further, the first alignment film 105 is a film having a function of aligning liquid crystals, and a polymer material such as a general polyimine is often used. As the coating liquid, an alignment agent solution containing a polymer material and a solvent can be used. The alignment film is coated in the sealing region due to the possibility of suppressing the adhesion to the sealing material. The coating method is a printing method such as a flexographic printing method or a droplet discharge method such as inkjet. The coated alignment agent solution is cured by temporary drying and evaporation of the solvent, followed by baking. Thereafter, the alignment process is performed in order to make the alignment function.

The alignment treatment is carried out by a usual rubbing method. On the polymer film formed as described above, a flat-grinding cloth made of fibers such as enamel is used, and the liquid crystal alignment ability is generated by one side rubbing.

Also, there are also those who use the optical alignment method. The photo-alignment method is a method in which a polarizing light is irradiated onto an alignment film containing an organic material having photoreceptivity to cause an alignment ability to occur, and substrate damage or dust generation by a rubbing method does not occur. As an example of the organic material in the photo-alignment method, there is a material containing a dichroic dye. In the case of a dichroic dye, a molecular alignment-induced or heterogeneous reaction (for example, azophenyl) or a dimerization reaction (for example, cinnamyl) having a Weigert effect due to photochromism can be used. A photocrosslinking reaction (for example, a benzophenone group) or a photodecomposition reaction (for example, a polyfluorenylene group) produces a photoreactive group which is a source of liquid crystal alignment ability (hereinafter, abbreviated as photoalignment) base). The applied alignment agent solution is obtained by temporarily drying the solvent and evaporating the light having an arbitrary deflection (polarized light) to obtain an alignment film having an alignment ability in an arbitrary direction.

The front substrate is provided with a black matrix 202, a color filter 203, a planarizing film 201, a transparent electrode 204, and a second alignment film 205 on the second substrate 200.

The black matrix 202 is produced by, for example, a pigment dispersion method. Specifically, on the second substrate 200 provided with the barrier film 201, a colored resin liquid in which a black coloring agent for black matrix formation is uniformly dispersed is applied to form a colored layer. Next, the colored layer is baked to be hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed through the mask pattern, development is performed to pattern the colored layer. Thereafter, the photoresist layer is peeled off, and the colored layer is baked to complete the black matrix 202.

Alternatively, a photoresist type pigment dispersion liquid can also be used. In this case, the photoresist dispersion of the photoresist is applied, and after prebaking, it passes through the mask. After the pattern was exposed, development was carried out to pattern the colored layer. Thereafter, the photoresist layer is peeled off, and the colored layer is baked to complete the black matrix 202.

The color filter 203 is formed by a pigment dispersion method, an electrodeposition method, a printing method, a dyeing method, or the like. In the case of the pigment dispersion method, a color resin liquid in which a pigment (for example, a red pigment) is uniformly dispersed is applied onto the second substrate 200, and after baking curing, the upper surface is coated with a photoresist and pre-baked. After the photoresist is exposed through the mask pattern, development is performed to form a pattern. Thereafter, the photoresist layer is peeled off and baked again to complete the (red) color filter 203. The order of coloring is not particularly limited. Similarly, a green color filter 203 and a blue color filter 203 are formed.

The transparent electrode 204 is provided on the color filter 203 (the outer layer (201) is provided on the color filter 203 for the purpose of flattening the surface if necessary). The transparent electrode 204 is preferably one having a high light transmittance, and the smaller one is preferably a smaller one. The transparent electrode 204 is formed of an oxide film of ITO or the like by a sputtering method.

Further, for the purpose of protecting the transparent electrode 204, a passivation film may be provided on the transparent electrode 204.

The second alignment film 205 is the same as the first alignment film 105 described above.

Although the above description of the back sheet and the front sheet used in the present invention is described above, the present invention is not limited to the specific embodiment, and the change of the aspect of the liquid crystal display element is free.

The shape of the columnar spacer is particularly limited, and the horizontal cross section can be formed into various shapes such as a circular shape, a quadrangular shape, or the like, but considering the misaligned margin during the process, the water is It is particularly preferable that the flat cross section is formed into a circular shape or a regular polygonal shape. Further, the shape of the projection is preferably a truncated cone or a truncated cone.

The material of the columnar spacer is not particularly limited as long as it is an organic solvent or a liquid crystal which is not dissolved in the sealing material or the sealing material. However, from the viewpoint of processing and weight reduction, synthetic resin (hardening) Resin) is preferred. On the other hand, the protrusions may be provided on the surface adjacent to the sealing material on the first substrate by a gravure printing method or a solution dropping method. For this reason, it is preferred to use a photocurable resin suitable for the method of gravure printing or the solution dropping method.

The case where the columnar spacer is obtained by the gravure printing method will be described as an example. Fig. 2 is a view showing an exposure processing procedure for forming a columnar spacer formed on a black matrix of a mask pattern.

A resin liquid for forming a columnar spacer (excluding a colorant) is applied to the transparent electrode 204 of the front plate. Next, the resin layer 402 is baked and hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed through the mask pattern 401, development is performed to pattern the resin layer. Thereafter, the photoresist layer is peeled off, and the resin layer is baked to complete the columnar spacer (302, 304 in Fig. 1).

The position at which the column spacers are formed determines the desired position depending on the mask pattern. Therefore, both the inside of the sealing region of the liquid crystal display element and the outside of the sealing region (the sealing material coating portion) can be simultaneously formed. Further, the column spacer is preferably formed on the black matrix so as not to lower the quality of the sealing region. The column spacers thus produced by gravure printing are sometimes referred to as column spacers or photo spacers.

The material of the spacer is a mixture of a negative water-soluble resin such as a PVA-strolbazo photosensitive resin or a polyfunctional acrylic monomer, an acrylic copolymer, a triazole-based initiator, or the like. Alternatively, there is a method of using a coloring resin in which a coloring agent is dispersed in a polyimide resin. The present invention is not particularly limited, and a spacer can be obtained by a known material depending on the phase of the liquid crystal or the sealing material to be used.

In this manner, after the columnar spacer is provided on the surface of the front plate which is the sealing region, the sealing material is applied to the surface adjacent to the sealing material of the backing plate (301 in Fig. 1).

The material of the sealing material is not particularly limited, and a curable resin composition for adding a polymerization initiator to an epoxy-based or acrylic-based photocurable, thermosetting, or photo-curable resin can be used. Further, in order to control moisture permeability, elastic modulus, viscosity, and the like, a filler derived from an inorganic substance or an organic substance may be added. The shape of these fillers is not particularly limited and may be spherical, fibrous, amorphous or the like. Further, in order to control the cell gap well, a spherical or fibrous spacer having a monodisperse diameter may be mixed, and in order to further strengthen the adhesion to the substrate, a fibrous substance which is easily entangled with the protrusion on the substrate may be mixed. The diameter of the fibrous material used at this time is about 1/5 to 1/10 of the cell gap, and it is desirable that the length of the fibrous material is shorter than the seal coating width.

In addition, the material of the fibrous material is not particularly limited as long as the predetermined shape can be obtained, and synthetic fibers such as cellulose, polyamide or polyester, or inorganic materials such as glass or carbon can be suitably selected.

In the method of applying the sealing material, there is a printing method or a dispensing method, but a dispensing method in which the amount of the sealing material used is small is preferable. Sealing material The coating position is usually made on a black matrix in such a manner that it does not adversely affect the sealing area. In order to form the liquid crystal dropping region of the next step (in such a manner that the liquid crystal does not leak), the sealing material coating shape is formed into a closed road shape.

Liquid crystal is dropped into the closed shape (sealing region) of the front plate to which the sealing material is applied. A dispenser is usually used. The amount of liquid crystal to be dropped is basically the same as the volume of the product of the height of the columnar spacer and the sealed coated area in order to match the volume of the liquid crystal cell. However, in order to optimize liquid crystal leakage or display characteristics in the step of bonding the liquid crystal cells, the amount of liquid crystal dropped may be appropriately adjusted, and the liquid crystal dropping position may be dispersed.

Next, the front plate of the liquid crystal is applied by applying the sealing material, and bonding to the back sheet. Specifically, the front plate and the back plate are adsorbed on a stage having a mechanism for adsorbing the substrate such as an electrostatic chuck, and the first alignment film of the front plate and the first alignment film of the back plate are paired. The position is placed at a position (distance) where the sealing material is not adjacent to the other substrate. In this state, the system is depressurized. After the decompression is completed, the positions of the two substrates are adjusted while adjusting the bonding position between the front plate and the back plate (calibration operation). At the end of the adjustment of the bonding position, the substrate is brought close to the position where the sealing material on the front plate abuts the backing plate. In this state, the inert gas is filled in the system, and the pressure is gradually released while returning to the normal pressure. At this time, the front plate and the back plate are bonded together by the atmospheric pressure, and the cell gap is formed at the height position of the column spacer. In this state, the sealing material is irradiated with ultraviolet rays and the sealing material is cured to form a liquid crystal cell. Thereafter, the heating step is added as appropriate and the sealing material is allowed to harden. In order to enhance the adhesion of the sealing material or to improve the reliability of the electrical characteristics, a heating step is often added.

[Examples]

The following examples are given to further illustrate the invention, but the invention is not limited to the examples. Moreover, "%" in the composition of the following examples and comparative examples means "% by mass".

In the examples, the measured characteristics are as follows.

Tni: nematic phase-isotropic liquid phase transfer temperature (°C)

Δn: refractive index anisotropy in 298K (alias: birefringence)

△ ε: dielectric anisotropy in 298K

η: viscosity in 293K (mPa.s)

Rotational viscosity (mPa.s) in γ1:298K

VHR: frequency holding rate (%) at 333K under the condition of a voltage of 60 Hz and a voltage of 5 V

VHR after the heat resistance test: TEG (test element group) for evaluating the optical optical properties of the liquid crystal composition sample was held in a thermostat at 130 ° C for 1 hour, and then measured under the same conditions as the above VHR measurement method. .

Afterimage:

The image sticking evaluation of the liquid crystal display element is performed after the predetermined fixed pattern is displayed in the display area for an arbitrary test time, and the test time until the image sticking of the fixed pattern at the time of uniform display of the full screen reaches an unacceptable image sticking degree is measured.

1) The test time referred to herein indicates the display time of the fixed pattern. When this time is long and the occurrence of residual image is suppressed, the performance is high.

2) The degree of image sticking that cannot be tolerated refers to the degree of residual image that is observed as unacceptable under the judgment of passing or not.

Drop the trace:

The evaluation of the dripping trace of the liquid crystal display device was carried out in the following five stages of evaluation by visually observing the dripping traces of the whitening in the case of full black display.

5: no traces of dripping (excellent)

4: Only a few traces of dripping are acceptable (good)

3: Only the trace of the drop, the limit of the pass or fail judgment (with conditions)

2: There are traces of dripping, the degree of unacceptable (not available)

1: There are traces of dripping, very poor (poor)

Process suitability:

The process suitability is based on the ODF process, using a fixed-meter metering pump, adding 50pL of liquid crystal per drop, measuring each of the "0~100 times, 101-200 times, 201-300 times,..." every 100 drops. The quality of the liquid crystals of 100 drops, the quality deviation was evaluated in order to achieve the number of drops that could not be adapted to the ODF process.

When the number of drops is large, it can be dripped stably over a long period of time, which means that the process is highly suitable.

Low temperature solubility:

Evaluation of Solubility at Low Temperature After modulating the liquid crystal composition, 1 g of the liquid crystal composition was weighed in a 2 mL sample vial, and in the temperature-controlled test tank, the following operation state was continued to be continued at -20 ° C (for 1 hour) → temperature rise (0.1 ° C / min) → 0 ° C (for 1 hour) → temperature (0.1 ° C / min) → 20 ° C (for 1 hour) → cooling (-0.1 ° C / min) → 0 ° C (for 1 hour) → Cooling (-0.1 ° C / min) → -20 ° C" as a cycle The temperature was changed to visually observe the occurrence of precipitates from the liquid crystal composition, and the test time when the precipitates were observed was measured.

The longer the test time, the longer the liquid crystal phase can be stably maintained over a long period of time, and the solubility at low temperatures is good.

Volatile/manufacturing device contamination:

The volatility evaluation of the liquid crystal material was carried out by using a strobooscope to observe the operation state of the vacuum stirring defoaming mixer, and visualizing the foaming of the liquid crystal material. Specifically, the vacuum stirring defoaming mixer having a capacity of 2.0 L was used. the special container 0.8kg into the liquid crystal composition, at 4kPa degassed, the revolution speed at 15S ^-1, rotation rate 7.5S ^-1, mixing and degassing operation in vacuo mixer, to the measurement of time starts foaming.

The longer the time until the start of foaming, the more difficult it is to volatilize, and the lower the possibility of contamination of the manufacturing apparatus, the higher the performance.

(Examples 1 to 2)

The composition shown in Table 1 was prepared, and an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 2.

(Comparative Example 1)

The composition shown in Table 1 which does not contain the compound represented by the above formula (i) was prepared, and an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 2.

In the ODF process, the composition prepared in the first to second embodiments was continuously dripped with stability in the ODF process, and the solubility at low temperature was remarkably excellent. Further, in the liquid crystal display produced in Examples 1 and 2, the image sticking was suppressed as compared with the liquid crystal display produced in Comparative Example 1, and the deterioration of the display quality due to the dropping trace was suppressed.

(Examples 3 to 4)

The composition shown in Table 3 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 4.

(Comparative Example 2)

The composition shown in Table 3 which does not contain the compound represented by the above formula (i) was prepared, and an IPS liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 4.

In the ODF process, the composition prepared in the examples 3 to 4 was drastically continued to be stably maintained over a long period of time in the ODF process, and the solubility at low temperatures was remarkably excellent. Further, in the liquid crystal display produced in Examples 3 to 4, the image sticking was suppressed as compared with the liquid crystal display produced in Comparative Example 2, and the deterioration of the display quality due to the dropping trace was suppressed.

(Examples 5 to 6)

The composition shown in Table 5 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 6.

(Comparative Example 3)

The composition shown in Table 5 which does not contain the compound represented by the above formula (ii) was prepared to prepare an IPS type liquid crystal display having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and liquid crystal display are shown in Table 6.

(Examples 7 to 10)

The composition shown in Table 7 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 8.

(Examples 11 to 14)

The composition shown in Table 9 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 10.

(Examples 15 to 18)

The composition shown in Table 11 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 12.

(Examples 19 to 22)

The composition shown in Table 13 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and the liquid crystal display are shown in Table 14.

(Examples 24 to 27)

The composition shown in Table 15 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and liquid crystal display are shown in Table 16.

(Examples 27 to 30)

The composition shown in Table 17 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 18.

(Examples 31 to 34)

The composition shown in Table 19 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 20.

(Examples 35 to 38)

The composition shown in Table 21 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 22.

(Examples 39 to 41)

The composition shown in Table 23 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and liquid crystal display are shown in Table 24.

(Comparative Example 4)

The composition shown in Table 23 of the compound represented by the formula (ii) was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 24.

In the ODF process, the compositions prepared in Examples 39 to 41 were more stable in the ODF process than in the composition prepared in Comparative Example 4, and the solubility at low temperatures was remarkably excellent. Further, in the liquid crystal displays produced in Examples 39 to 41, the image sticking was suppressed as compared with the liquid crystal display produced in Comparative Example 4, and the deterioration of the display quality due to the dropping marks was suppressed.

(Examples 42 to 45)

The composition shown in Table 25 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 26.

(Comparative Example 5)

The composition shown in Table 25 which does not contain the compound represented by the above formula (i) was prepared to prepare an IPS type liquid crystal display having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and liquid crystal display are shown in Table 26.

The compositions prepared in Examples 42 to 45 were significantly more stable in the ODF process than in the composition prepared in Comparative Example 5, and the solubility at low temperatures was remarkably excellent. Further, in the liquid crystal displays produced in Examples 42 to 45, the image sticking was suppressed as compared with the liquid crystal display produced in Comparative Example 5, and the deterioration of the display quality due to the dropping marks was suppressed.

(Examples 46 to 49)

The composition shown in Table 27 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 28.

(Examples 50 to 52)

The composition shown in Table 29 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 30.

(Comparative Example 6)

The composition shown in Table 29 which does not contain the compound represented by the above formula (ii) was prepared to prepare an IPS type liquid crystal display having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and liquid crystal display are shown in Table 30.

The compositions prepared in Examples 50 to 52 were more stable in the ODF process than in the composition prepared in Comparative Example 6, and the solubility at low temperatures was remarkably excellent. Further, in the liquid crystal display produced in Examples 50 to 52, the image sticking was suppressed as compared with the liquid crystal display produced in Comparative Example 6, and the deterioration of the display quality due to the dropping trace was suppressed.

(Examples 53 to 56)

The composition shown in Table 31 was prepared to produce an IPS type liquid crystal display having the structures shown in Figs. 1 and 2. The evaluation results of the obtained composition and liquid crystal display are shown in Table 32.

The liquid crystal composition prepared by the above examples has low viscosity and good solubility at low temperatures. Moreover, it lacks volatility and can suppress device contamination. Further, in the ODF process, unevenness in the amount of dripping of the liquid crystal composition can be suppressed, and the liquid crystal display can be produced stably over a long period of time. Further, the liquid crystal display produced in the examples was excellent in heat resistance and exhibited stable display characteristics over a long period of time.

[Industrial availability]

The liquid crystal composition having positive dielectric anisotropy of the present invention has good solubility at low temperature, and has a small specific resistance or voltage holding ratio with little change in heat or light, so that the product has high practicability and liquid crystal containing the same. The display element achieves a high speed response. Further, the liquid crystal display device manufacturing process is extremely useful because it can stably continue the dropping of the liquid crystal composition, suppressing the display failure of the process, and manufacturing at a high yield.

Claims (12)

A liquid crystal composition comprising a liquid crystal composition having a positive dielectric anisotropy and containing a compound represented by the following formula (i), at least one compound represented by the following formula (ii), At least two compounds represented by the following formula (X-6) and at least two compounds represented by the following formula (I-1), In the above formula, R ⁱⁱ¹ and R ⁱⁱ² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms, and either one of X ⁱⁱ¹ and X ⁱⁱ² represents a hydrogen atom, and the other represents a fluorine atom. atom, In the above formula, R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. In the above formula, R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; the above formula (I-1) The content of the compound of at least two kinds of the compound is 37 to 70% by mass based on the total mass of the liquid crystal composition, and the compound represented by the above formula (I-1) contains at least one of the following a compound represented by the formula (I-1-1), In the above formula, R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms; represented by the above formula (X-6) The content of the at least two compounds is 4 to 15% by mass based on the total mass of the liquid crystal composition; the content of the compound represented by the above formula (i) is 1 to 35 with respect to the total mass of the liquid crystal composition of the present invention. The content of the compound represented by the above formula (ii) is from 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. The liquid crystal composition of claim 1, wherein at least one compound represented by the above formula (ii) is contained in an amount of 0.5% by mass or more and less than 5% by mass based on the total mass of the liquid crystal composition. At least one compound of the group represented by the formula (ii.2.1) and the compound represented by the following formula (ii.2.2) The liquid crystal composition of claim 1, which contains a compound represented by the following formula (ii.1.3) which is at least one compound represented by the above formula (ii), The liquid crystal composition of claim 1, which contains a compound represented by the following formula (ii.2.9) and at least one compound represented by the above formula (ii), and the following formula (ii.2.10) At least one compound of the group consisting of the compounds, The liquid crystal composition of claim 1, which further contains at least one compound represented by the following formula (L), In the above formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two of the non-contiguous -CH ₂ - groups may be independently -CH=CH -, -C≡C-, -O-, -CO-, -COO- or -OCO-substituted, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 each independently represent a composition selected from the group consisting of Group of groups: (a) 1,4-cyclohexylene (one of which is present in this group -CH ₂ - or at least two of which are not contiguous -CH ₂ - may be substituted with -O-), And (b) 1,4-phenylene (one of which is present in the group -CH= or at least two of which are not contiguous -CH= may be substituted with -N=), the above-mentioned group (a) and The groups (b) are each independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, - CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-, OL is 2 or 3 and L ^L2 is a plurality of cases. They may be the same or different, OL is 2 or 3, and B ^L3 is a plurality of cases, and they may be the same or the same. The compound represented by the above formula (ii) and the compound represented by the above formula (I-1) Except for things. The liquid crystal composition of claim 1, which further contains at least one compound represented by the following formula (M), In the above formula, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two of -CH ₂ - which are not adjacent to each other may be independently -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of: ( d) 1,4-cyclohexylene (one of -CH ₂ - or at least two non-contiguous -CH ₂ - may be substituted by -O- or -S-), and (e 1,4-phenylene (the one present in this group -CH= or at least two non-contiguous -CH= can be substituted for -N=), the above-mentioned group (d) and group (e) Each of them may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^M1 is a plurality of cases, which may be The same or different, PM is 2, 3 or 4 and C ^M2 is a plurality of cases, and they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom. X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group, but the compound represented by the above formula (i) and the above formula (X- 6) Except for the compounds indicated. The liquid crystal composition of the above-mentioned item 1 contains 0.5% by mass or more and 4% by mass or less of the following formula of at least one compound represented by the above formula (X-6), based on the total mass of the liquid crystal composition. (44.1) the compound represented, The liquid crystal composition of claim 5, which contains a compound represented by the following formula (12.4) which is at least one compound represented by the above formula (L), The liquid crystal composition of claim 1, which further contains a compound represented by the following formula (62.1), A liquid crystal display element using the liquid crystal composition of claim 1. The liquid crystal display element of claim 10 is displayed in an IPS mode, an OCB mode, an ECB mode, a VA mode, a VA-IPS mode, or an FFS mode. A liquid crystal display characterized by using a liquid crystal display element as claimed in claim 10 or 11.