TWI591160B - Liquid crystal composition, liquid crystal display element using the same, and liquid crystal display 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.

Liquid crystal display elements have been used in various measuring machines, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertising displays, etc., including clocks and computers. 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 stimuli other than moisture, air, heat, light, etc., and is intended to display a liquid crystal phase at a temperature range as wide as possible centered 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, a liquid crystal composition is composed of several kinds to several 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, the setting of Δn × d by the product of Δn and the cell gap (d) 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.

For example, a compound represented by the following formula (A-1) or the following formula (A-2) in which a liquid crystal compound having a positive Δ ε is combined is disclosed as a composition of a liquid crystal composition having a high-speed reactivity. And a liquid crystal composition used as a compound represented by the following formula (B) in which Δε is a neutral liquid crystal compound. These liquid crystal compositions are characterized in that the liquid crystal compound having a positive liquid crystal compound of Δε has a -CF ₂ O- structure, or a liquid crystal compound having a negative Δ ε has an alkenyl group. These characteristics are widely known in the field of liquid crystal compositions (see Patent Documents 1 to 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 a display element having a size of 50 Å or more is put into practical use. 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 be lowered has become a surface. Further, regarding the manufacturing process 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 greater than 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. In particular, most of the small liquid crystal display elements used in recent popular smart phones are designed to be most suitable. When the amount of liquid crystal injection is small, it is difficult to control the deviation of the optimum value within a certain range. Therefore, in order to maintain a high yield of the liquid crystal display element, for example, it is possible to have a small effect on the sudden pressure change or the smashing in the dripping device which is generated when the liquid crystal is dropped, and it is possible to stably drop the liquid crystal over a long period of time. Is necessary.

In this way, the liquid crystal composition used in the active matrix driving liquid crystal display device driven by the TFT element or the like maintains the characteristics or performance sought by the liquid crystal display element as a high-speed reaction property, and has a high specific resistance which has been conventionally emphasized. In addition to the characteristics of the specific resistance value or the high voltage holding rate or the so-called external stimulus such as light or heat, development of a manufacturing method of the liquid crystal display element is being considered.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-037918

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2008-038018

[Patent Document 3] Japanese Laid-Open Patent Publication No. 2010-275390

[Patent Document 4] Japanese Patent Publication No. 2011-052120

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. For the stability of the liquid crystal composition, the yield is good to provide the use of this liquid crystal composition A liquid crystal display element such as an IPS type or a TN type which is excellent in quality and which is difficult to cause display defects such as image sticking or dripping marks is hard to be obtained.

The inventors of the present invention have found that various liquid crystal compounds and various chemical substances are combined, and it has been found that the above-mentioned problems can be solved by combining specific liquid crystal compounds, and the present invention has been completed.

That is, the present invention is as follows.

[1] A composition containing one or more compounds represented by the formula (i) and containing one or more compounds represented by the formula (ii),

(wherein R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and R ⁱⁱ¹ and R ⁱⁱ² are each independently represented by a carbon number. An alkyl group of 1 to 8 or an alkoxy group having 1 to 4 carbon atoms. However, one 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-, the hydrogen atom in the alkyl group may be substituted by a fluorine atom or a chlorine atom, n ⁱ¹ represents 1 or 2, and X ⁱ¹ represents a hydrogen atom. or a fluorine atom, a ⁱ¹ represents trans-1,4-cyclohexylene group or a hydrogen atom may be substituted with a fluorine atom or a chlorine atom in the 1,4-phenylene, a ⁱ¹ case where there is a plurality, their may be a The same may be different, Z ⁱ¹ represents a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO-, -C=C-, Z ⁱ¹ exist in a plurality of cases, and they may be the same or different.

[2] The liquid crystal composition according to [1], wherein Z ⁱ¹ in the above formula (i) is a single bond.

[3] The liquid crystal composition according to [1] or [2], wherein A ⁱ¹ in the above formula (i) is a trans-1,4-cyclohexylene group.

[4] of [1] to [3] The liquid crystal composition according to any one, n ⁱ¹ where the formula (i) is 2.

[5] The liquid crystal composition according to any one of [1] to [4], wherein the liquid crystal composition of the present invention further contains a compound represented by the following formula (L), (wherein R ^L1 and R ^L2 are each independently represented by an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may be independently substituted with -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently represented as being selected from from the group consisting of the group: (a) 1,4- cyclohexylene (this group present in one of the -CH ₂ - or of two or more adjacent -CH ₂ - may be substituted with -O- And (b) 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= which may be substituted in this group may be substituted with -N=, the above-mentioned group (a) The group (b) is independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 are each independently represented as 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 exists in a plurality of cases, they may be the same or different, OL is 2 or 3 and B ^L3 has a plurality of cases, they may be the same or different However, except for the compound represented by the formula (ii).

[6] The liquid crystal composition according to any one of [1] to [5], further comprising a compound represented by the following formula (M), (wherein, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - is independently independently -CH=CH-, -C≡ C-, -O-, -CO-, -COO- or -OCO-substituted, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 are each independently a group representing a group selected from the group consisting of : (d) 1,4-cyclohexylene (1 -CH ₂ - or 2 or more -CH ₂ - which are not adjacent to this group may be substituted with -O- or -S-); (e) 1,4-phenylene (one of -CH= or non-contiguous two or more -CH= which may be substituted in this group may be substituted with -N=, the above-mentioned group (d), group ( e) each independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 are each independently represented as 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 has a plurality of cases, they may the same or different, PM 2, 3 or 4 and C ^M2 there is a case where a plurality of, their may be identical or different, 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, three Methyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; but excluding compounds of formula (i) represents)

The liquid crystal composition of any one of the following [1] to [6], further containing the compound represented by the following General formula (I-1-1), (wherein R ^{12 is} each independently represented by 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).

[8] The liquid crystal composition according to any one of [1] to [7], which further contains 14% by mass of a compound represented by the following formula (1.3).

[9] A liquid crystal display device using the liquid crystal composition according to [1] above.

[10] A liquid crystal display element for IPS mode, OCB mode, ECB mode, VA mode, VA-IPS mode or FFS mode, which is characterized by use The liquid crystal composition described in the above [1].

[11] A liquid crystal display comprising the liquid crystal display element according to [9] or [10] above.

The liquid crystal composition of the present invention has positive dielectric anisotropy, and is excellent in viscosity which is greatly reduced in comparison with conventionally, and has low solubility in a low temperature, and its specific resistance or voltage holding ratio is extremely small by heat or light. Therefore, the product is highly practical, and a high-speed reaction can be achieved by using a liquid crystal display element such as an IPS type or an FFS type using the liquid crystal composition. Moreover, since the performance of the liquid crystal display element can be stably exhibited, the display failure due to the process can be suppressed, and the liquid crystal display element can be manufactured with high yield, which is very useful.

100‧‧‧1st substrate

102‧‧‧TFT layer

103‧‧‧ pixel electrodes

104‧‧‧passivation film

105‧‧‧1st alignment film

200‧‧‧2nd substrate

201‧‧‧Flating film (coating layer)

202‧‧‧Black matrix

203‧‧‧Color filters

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 "backplane", and a substrate having 200 to 205 is referred to as a "front panel".

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

[Formation of the Invention]

The liquid crystal composition of the present invention has a positive dielectric anisotropy and contains at least one of the compounds represented by the formula (i) having a positive dielectric component and at least one of the compounds represented by (ii) Kind.

Further, in the present invention, the dielectric anisotropy (??) of the compound means The value obtained by extrapolating the measured value of the dielectric anisotropy of the composition prepared by adding the compound to a liquid crystal composition having a dielectric anisotropy of about 0 at 25 ° C was extrapolated.

Further, in the present invention, "% by mass" means "% by mass" unless otherwise specified.

<About general formula (i)>

The liquid crystal composition of the present invention contains a compound represented by the following formula (i) as an essential component, (wherein R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, but one of the alkyl groups or non-adjacent Two or more -CH ₂ - may be independently substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, and the hydrogen atom in the alkyl group may be Substituted by a fluorine atom or a chlorine atom, n ⁱ¹ represents 1 or 2, X ⁱ¹ represents a hydrogen atom or a fluorine atom, and A ⁱ¹ represents a trans-1,4-cyclohexylene group or a hydrogen atom which may be substituted by a fluorine atom or a chlorine atom. 4-phenylene, A ⁱ¹ exists in a plurality of cases, they may be the same or different, Z ⁱ¹ represents a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO-, -C≡C-, Z ⁱ¹ exist in a plurality of cases, they may be the same or Different).

The compound represented by the above formula (i) which is an essential component contained in the liquid crystal composition of the present invention is preferably a compound represented by the following formula (XIII-2).

(wherein R ¹³ 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 one to two or more kinds of the compounds.

The ratio of the compound represented by the formula (XIII-2) is preferably 3% by mass or more and 25% by mass or less, more preferably 5% by mass or more and 25% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. % is more preferably 5% by mass or more and 20% by mass or less, still more preferably 7% by mass or more and 15% by mass or less. Further, it is particularly preferably 8 mass% or more and 14 mass% or less.

Further, the compound represented by the formula (XIII-2) is preferably a compound represented by the formula (49.1) to the formula (49.4), and a compound represented by the formula (49.1) and/or the formula (49.2) is preferred. .

The ratio of the compound represented by the formula (49.1) is preferably 3% by mass or more and 15% by mass or less, more preferably 3% by mass or more and 10% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. More preferably, it is 3% by mass or more and 7% by mass or less, and more preferably 5% by mass or more and 7% by mass or less.

The ratio of the compound represented by the formula (49.2) is preferably 2% by mass or more and 18% by mass or less, more preferably 3% by mass or more and 15% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. More preferably, it is 5% by mass or more and 12% by mass or less, and more preferably 6% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (i) is preferably a compound represented by the formula (XIII-3).

(wherein R ¹³ 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 one to two kinds of the compounds containing these are preferable.

The ratio of the compound represented by the formula (XIII-3) is preferably 2% by mass or more and 20% by mass or less, more preferably 4% by mass or more and 15% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. % is more preferably 5% by mass or more and 10% by mass, still more preferably 6% by mass or more and 8% by mass or less.

The compound represented by the formula (XIII-3) is preferably a compound represented by the formula (50.1) to the formula (50.4), and a compound represented by the formula (50.1) and/or the formula (50.2) is preferred. Ratio of the compound represented by the formula (50.1) The ratio is preferably 2% by mass or more and 20% by mass or less, more preferably 4% by mass or more and 15% by mass or more, and more preferably 5% by mass or more and 10% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. More preferably, it is 6 mass% or more and 8 mass% or less.

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

(wherein 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 formula (X-1-2) is preferably 1% by mass or more, more preferably 2% by mass or more, and 5% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The above is preferred.

Also, consider the solubility at low temperature, transfer temperature, electrical reliability, etc. In the case, the content of the compound represented by the formula (X-1-2) is preferably 15% by mass or less, preferably 16% by mass or less, more preferably 12% by mass or less, and still more preferably 10% by mass.

Among them, the range of 1% by mass or more and 7% by mass or less is optimal.

In addition, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (37.1) to the formula (37.4) is preferable, and The compound represented by the formula (37.2) is preferred. The ratio of the compound represented by the formula (37.2) is particularly preferably 1% by mass or more and 7% by mass or less.

Further, the compound represented by the formula (i) of the present invention is preferably a compound represented by the following formula (X-3-1).

(wherein 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 it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (X-3-1) is 1% by mass or more, preferably 2% by mass or more, and preferably 3% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. the above.

In particular, when the solubility in a low temperature, the transfer temperature, the electrical reliability, etc. are taken into consideration, the content of the compound represented by the formula (X-3-1) is preferably 0% by mass or more and 10% by mass or less, preferably 0% by mass. % or more and 8% by mass or less, preferably 0% by mass or more and 6% by mass or less, preferably 0% by mass or more and 4% by mass or less.

Further, the compound represented by the formula (X-3-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (41.1) to the formula (41.4) is preferable, and The compound represented by the formula (41.2) is preferred.

Further, the compound represented by the formula (i) is preferably a compound represented by the following formula (XIV-2-5).

(wherein R ¹⁴ 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 general formula (XIV-2-5) is preferably 100% by mass based on the total mass of the liquid crystal composition of the present invention, in consideration of the solubility in the low temperature, the transfer temperature, the electrical reliability, and the like. 5 mass% or more and 25 mass% or less, preferably 10 mass% or more and 22 mass% or less, preferably 13 mass% or more and 18 mass% or less, and preferably 13 mass% or more and 15 mass% or less.

Further, the compound represented by the formula (XIV-2-5), specifically, the compound represented by the formula (57.1) to the formula (57.4). Among them, a compound represented by the formula (57.1) is more preferable.

Further, the compound represented by the formula (i) is preferably a compound represented by the following formula (XIV-2-6).

(wherein R ¹⁴ 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 general formula (XIV-2-6) is preferably 5 in terms of the total mass of the liquid crystal composition of the present invention, in consideration of the solubility at low temperature, the transfer temperature, the electrical reliability, and the like. The mass% or more is 25% by mass or less, preferably 10% by mass or more and 22% by mass or less, preferably 15% by mass or more and 20% by mass or less, and preferably 15% by mass or more and 17% by mass or less.

Further, the compound represented by the formula (XIV-2-6), specifically, the compound represented by the formula (58.1) to the formula (58.4) is preferable, wherein the compound represented by the formula (58.2) is Better. The compound represented by the formula (58.2) is preferably 5% by mass to 15% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention.

In the case where a compound represented by the formula (i) is used in combination, a compound represented by the formula (XIII-2) and the formula (X-1-2) is preferably combined, and the formula (XIII-2) is combined. The compound represented by the formula (XIII-3) and the formula (X-1-2) is preferred. It is also preferred to use two kinds of compounds selected from the compounds represented by the formula (XIII-2).

In the case where three kinds of compounds represented by the formula (i) are used in combination, a compound represented by the combination formula (49.1), formula (49.2) and formula (37.2) is preferred, and the formula (49.2) and formula (50.1) are combined. And a compound represented by the formula (37.2) is preferred.

In the case where the compound represented by the formula (i) is used in combination, the ratio of the total of the compounds represented by the formula (i) is preferably 10% by mass based on 100% by mass of the total amount of the liquid crystal composition of the invention. The mass% or more is 25% by mass or less, more preferably 13% by mass or more and 20% by mass, and more preferably 16% by mass or more and 19% by mass or less.

<About general formula (ii)>

The liquid crystal composition of the present invention contains the following formula (ii) The compound is an essential component.

(wherein R ⁱⁱ¹ and R ⁱⁱ² are each independently represented by an alkyl group having 1 to 8 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 formula (ii) can be determined in consideration of the solubilization or complex refractive index.

Specifically, the content of the compound represented by the formula (ii) is preferably 3% by mass or more and 25 parts by mass or less, more preferably 3% by mass or more based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. The mass is preferably 5% by mass or more and 15% by mass or less, more preferably 5% by mass or more and 13% by mass or less, still more preferably 6% by mass or more and 10% by mass or less.

The compound represented by the formula (ii) is preferably a compound represented by the formula (III-1).

(R ³³ represents an alkyl 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).

It is preferred to adjust the content in accordance with the performance of the low temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

Specifically, the content of the compound represented by the formula (III-1) is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. % or more is 18% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

The compound represented by the formula (III-1), for example, a compound represented by the formula (16.1) to the formula (16.3) is preferred.

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

The content of the compound represented by the formula (15.1) is preferably 5% by mass or more and 12% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention.

Further, the compound represented by the formula (ii) is preferably a compound represented by the following 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 formula (III-2) is dissolved in response to low temperature. The performance of the solution, the transfer temperature, the electrical reliability, the complex refractive index, and the like are preferably adjusted.

Specifically, the content of the compound represented by the formula (III-2) is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. % or more is 18% by mass or less, and more preferably 10% by mass or more and 13% by mass.

Further, the compound represented by the formula (III-2), for example, a compound selected from the group consisting of the compounds represented by the formula (17.1) to the formula (17.3) is preferred, and in particular, the compound represented by the formula (17.3) is preferred. .

<About the compound represented by the general formula (L)>

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

(wherein R ^L1 and R ^L2 are each independently represented by an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently be -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 are each independently represented as selected from the following The group of the group consisting of: (a) 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-) And (b) 1,4-phenylene (one of which is present in this group -CH= or two or more non-contiguous -CH= may be substituted with -N=).

The above-mentioned groups (a) and (b) are each independently substituted by a cyano group, a fluorine atom or a chlorine atom. L ^L1 and L ^L2 are each independently represented as 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-,

When OL is 2 or 3 and L ^L2 has a plurality of cases, they may be the same or different, and OL is 2 or 3 and B ^L3 has a plurality of cases, and they may be the same or different, but, Except for the compound represented by the formula (ii)).

The type of the compound which can be combined is not particularly limited, but may be appropriately combined in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types. Further, in another embodiment of the present invention, there are five types. Further, in another embodiment of the present invention, there are six types. Further, in another embodiment of the present invention, there are seven types. Further, in another embodiment of the present invention, there are eight types. Further, in another embodiment of the present invention, there are nine types. Further, in another embodiment of the present invention, it is 10 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (L) is required to be in response to low temperature solubility, transfer temperature, and electricity. The performance of gas reliability, complex refractive index, process suitability, dripping marks, afterimage, dielectric anisotropy, etc. are appropriately adjusted.

The content of the above compound is, for example, 1 to 95% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 10 to 95% by mass. Further, in another embodiment of the present invention, the content is 20 to 95% by mass. Further, in another embodiment of the present invention, the content is from 30 to 95% by mass. Further, in another embodiment of the present invention, the content is 40 to 95% by mass. Further, in another embodiment of the present invention, the content is 50 to 95% by mass. Further, in another embodiment of the present invention, the content is 55 to 95% by mass. Further, in another embodiment of the present invention, the content is 60 to 95% by mass. Further, in another embodiment of the present invention, the content is 65 to 95% by mass. Further, in another embodiment of the present invention, the content is 70 to 95% by mass. Further, in another embodiment of the present invention, the content is 75 to 95% by mass. Further, in another embodiment of the present invention, the content is 80 to 95% by mass.

Further, the content of the above compound is, for example, 1 to 95% in one form of the present invention with respect to the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 1% to 85%. Further, in another embodiment of the present invention, the content is 1 to 75%. Further, in another embodiment of the present invention, the content is 1% to 65%. Further, in another embodiment of the present invention, the content is 1 to 55%. Further, in another embodiment of the present invention, the content is 1% to 45%. Further, in another embodiment of the present invention, the content is 1 to 35%. Further, in another embodiment of the present invention, the content is 1% to 25%.

When the liquid crystal composition having a high reaction rate is necessary, the viscosity of the liquid crystal composition is kept low, and the lower limit and the upper limit are preferably higher.

Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high Tni and a liquid crystal composition having good temperature stability is required, the lower limit value and the upper limit value are preferably higher.

Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable that the lower limit value and the upper limit value are lower.

R ^L1 and R ^L2 in the case where the ring to which the bond is bonded is a phenyl group (aromatic), which is a linear alkyl group having 1 to 5 carbon atoms and a linear carbon number of 1 to 4 (or The alkoxy group of the above) and the alkenyl group having 4 to 5 carbon atoms are preferred, and the ring structure to which the bond is bonded is cyclohexane, megbrane and 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 or more carbon atoms, and a linear carbon. The alkenyl group having 2 to 5 atoms is preferred.

When the compound represented by the formula (L) is required to satisfy the chemical stability of the liquid crystal composition, it is preferred that the compound 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)

(wherein R ¹¹ and R ¹² are each independently represented by an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; and each of A ¹¹ and A ¹² Independently represented as 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 according to the properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types. Further, in another embodiment of the present invention, there are five types. Further, in another embodiment of the present invention, it is six or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the dripping trace, the afterimage, and the The performance of electrical anisotropy and the like is appropriately adjusted.

The content of the above compound is, for example, 3 to 75% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 15 to 75% by mass. Further, in another embodiment of the present invention, the content is from 18 to 75% by mass. Further, in another embodiment of the present invention, the content is 20 to 75% by mass. Further, in another embodiment of the present invention, the content is from 29 to 75% by mass. Further, in another embodiment of the present invention, the content is 35 to 75% by mass. Further, in another embodiment of the present invention, the content is 42% to 75% by mass. Further, in another embodiment of the present invention, the content is 47 to 75% by mass. Further, in another embodiment of the present invention, the content is 53 to 75% by mass. Further, in another embodiment of the present invention, the content is 56 to 75% by mass. Also, in the other aspect of the invention In the embodiment, the content is 60 to 75% by mass. Further, in another embodiment of the present invention, the content is 65 to 75% by mass.

Further, the content is, for example, 3 to 75% by mass 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 3 to 65% by mass. Further, in another embodiment of the present invention, the content is from 3 to 55% by mass. Further, in another embodiment of the present invention, the content is 3 to 50% by mass. Further, in another embodiment of the present invention, the content is 3 to 45% by mass. Further, in another embodiment of the present invention, the content is from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is 3 to 35% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% by mass.

A liquid crystal composition having a fast reaction rate is necessary, and the viscosity of the liquid crystal composition is kept low, and the lower limit value and the upper limit value are preferably higher.

Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high Tni and a liquid crystal composition having a good temperature stability is necessary, the lower limit value is a modest value and the upper limit value is a moderate one.

Further, in order to keep the driving voltage at a low value and to make the dielectric anisotropy a large value, it is preferable to set the lower limit value to a lower value and the upper limit value to be lower.

R ¹¹ and R ¹² , in the case where the ring to which the bond is bonded is a phenyl group (aromatic), is a linear alkyl group having 1 to 5 carbon atoms, and a linear carbon number of 1 to 4 An alkoxy group and an alkenyl group having 4 to 5 carbon atoms are preferred, and the ring structure to which the bond is bonded 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 alkyl group having 2 to 5 carbon atoms The base is preferred.

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

(wherein 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 according to the properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types. Further, in another embodiment of the present invention, it is five or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1) is required to satisfy the solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, process suitability, dripping trace, and afterimage. The performance of dielectric anisotropy and the like is appropriately adjusted.

The content of the above compound is, for example, in the embodiment of the present invention, the content of the compound is from 3 to 70% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 15 to 70% by mass. Further, in another embodiment of the present invention, the content is from 18 to 70% by mass. Further, before the other embodiments of the present invention The content is 25 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 31% to 70% by mass. Further, in another embodiment of the present invention, the content is 35 to 70% by mass. Further, in another embodiment of the present invention, the content is 43% to 70% by mass. Further, in another embodiment of the present invention, the content is 47% to 70% by mass. Further, in another embodiment of the present invention, the content is 50% to 70% by mass. Further, in another embodiment of the present invention, the content is 53 to 70% by mass. Further, in another embodiment of the present invention, the content is 56 to 70% by mass.

The content of the above compound, for example, in one embodiment of the present invention, is from 3 to 70% by mass 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 from 3 to 60% by mass. Further, in another embodiment of the present invention, the content is 3 to 50% by mass. Further, in another embodiment of the present invention, the content is 3 to 45% by mass. Further, in another embodiment of the present invention, the content is from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is 3 to 35% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% by mass. Further, in another embodiment of the present invention, the content is 3 to 26% by mass.

A liquid crystal composition having a high reaction rate is necessary, and in order to lower the viscosity of the liquid crystal composition, it is preferable that the lower limit value and the upper limit value are higher.

Further, in the case where a liquid crystal composition having good temperature stability is necessary, in order to keep the Tni of the liquid crystal composition high, the above lower limit value and upper limit value are preferable.

Further, in order to keep the driving voltage at a low value and to make the dielectric anisotropy a large value, it is preferable that the lower limit value and the upper limit value are lower.

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

(wherein 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).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-1) is dependent on the solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, process suitability, and dripping traces. The performance of the image, the residual image, and the dielectric anisotropy are appropriately adjusted.

The content of the above compound is, for example, 2 to 60% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 4 to 60% by mass. Further, in another embodiment of the present invention, the content is 7 to 60% by mass. Further, in another embodiment of the present invention, the content is from 11 to 60% by mass. Further, in another embodiment of the present invention, the content is 13 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 from 17 to 60% by mass. Further, in another embodiment of the present invention, the content is 20 to 60% by mass. Further, in another embodiment of the present invention, the content is 25 to 60% by mass. Further, in another embodiment of the present invention, the content is 30% to 60% by mass. Further, in another embodiment of the present invention, the content is 32% to 60% by mass. Also, in the present invention The content of the embodiment is 35 to 60% by mass.

The content of the above compound is, for example, 2 to 60% by mass 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 2 to 50% by mass. Further, in another embodiment of the present invention, the content is 2 to 40% by mass. Further, in another embodiment of the present invention, the content is 2 to 35% by mass. Further, in another embodiment of the present invention, the content is 2 to 30% by mass. Further, in another embodiment of the present invention, the content is 2 to 25% 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 15% by mass. Furthermore, in another embodiment of the present invention, the content is 5 to 10% by mass.

Further, the compound represented by the 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 represented by the formula (1.2) or the formula (1.3). The compound is preferably a compound of the formula (1.3), more preferably.

When the compound represented by the formula (1.2) or the formula (1.3) is not used in combination, and the case where the compound represented by the formula (1.2) is high, the improvement of the reaction rate is effective, and the formula ( 1.3) When the content of the compound shown is in the range shown below, it can be a liquid crystal composition having a fast reaction rate and high electrical and optical reliability. It is better.

The compound represented by the formula (1.3) is preferably contained in an amount of 5% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention, more preferably 6% by mass or more and 30% by mass or less, and more preferably 8 parts by mass. It is more preferably 2% by mass or more and 25% by mass or less, more preferably 10% by mass or more and 20% by mass or less, and most preferably 10% by mass or more and 15% by mass or less.

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

(Wherein R ¹² represents an alkyl group having 1 to 5 carbon atoms, the carbon atoms, an alkoxy group or a 1 to 5 carbon atoms of the alkenyl group having 2 to 5).

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-2) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, process suitability, dripping trace, The performance of the afterimage, dielectric anisotropy, etc. is appropriately adjusted.

The content of the above compound is, for example, 7 to 60% by mass based on the total mass of the liquid crystal composition of the present invention. Or other embodiments of the present invention are the aforementioned contents. It is 15 to 60% by mass. Further, in another embodiment of the present invention, the content is from 18 to 60% by mass. Further, in another embodiment of the present invention, the content is 21 to 60% by mass. Further, in another embodiment of the present invention, the content is 24 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 30% 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 47% 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 41 to 60% by mass. Further, in another embodiment of the present invention, the content is from 47 to 60% by mass. Further, in another embodiment of the present invention, the content is 50% to 60% by mass.

Further, the content of the above compound is, for example, 7 to 60% by mass 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 7 to 55% by mass. Further, in another embodiment of the present invention, the content is 7 to 45% by mass. Further, in another embodiment of the present invention, the content is 7 to 40% by mass. Further, in another embodiment of the present invention, the content is 7 to 35% 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 7 to 25% by mass. Further, in another embodiment of the present invention, the content is 7 to 20% 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 better.

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, when a Tni having a higher reaction rate is sought, it is preferred to use a compound represented by the formula (2.3) or the formula (2.4).

Further, the content of the compound represented by the formula (2.3) and the formula (2.4) is not preferable in order to satisfactorily produce a low-temperature solubility of 30% or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.2) is preferably 5% by mass or more and 55% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferred examples of the content include 10% by mass and 40% by mass, 14% by mass or more and 40% by mass or less, 17% by mass or more and 40% by mass or less, 19% by mass or more and 40% by mass or less, and 22% by mass. 40% by mass or less, 25% by mass or more and 40% by mass or less, 27% by mass or more and 40% by mass or less, 30% by mass or more and 40% by mass or less, 33% by mass or more and 40% by mass or less, and 36% by mass or more and 40% by mass or less the following.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.3) is preferably 5% by mass or more and 55% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 10% by mass and 45% by mass. The following is more preferable, and 10% by mass or more and 35% by mass or less is more preferable, and 10% by mass is 30% by mass or less is more preferably 10% by mass or more and 25% by 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 22% by mass or less is particularly 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 55% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 3% by mass and 45% by mass. The following is more preferable, and it is more preferably 3 mass% or more and 35 mass% or less, more preferably 3 mass% or more and 25 mass% or less, more preferably 3 mass% or more and 15 mass% or less, and 5 mass% or more and 12 mass% or less. More preferably, it is more preferably 5 mass% or more and 10 mass% or less, and particularly preferably 6 mass% or more and 8 mass% or less.

The liquid crystal composition of the invention 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).

It is preferred to adjust the content of the compound represented by the formula (2.5) in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

Specifically, the compound represented by the formula (2.5) is preferably contained in an amount of 11% by mass or more, more preferably 15% by mass or more, and more preferably 23% by mass based on 100% by mass of the total mass of the liquid crystal composition of the present invention. The above is more preferable, and it is more preferably 26% by mass or more, and particularly preferably 28% by mass or more.

Further, the compound represented by the formula (I) is a compound of the formula (I-2) The compound represented is preferred.

(wherein R ¹¹ and R ¹⁴ are each independently represented by an alkyl group having 1 to 5 carbon atoms).

The type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-2) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, process suitability, dripping trace, and afterimage. The performance of dielectric anisotropy and the like is appropriately adjusted.

The content of the above compound is, for example, from 3 to 60% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 4 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 25 to 60% by mass. Further, in another embodiment of the present invention, the content is 30% to 60% by mass. Further, in another embodiment of the present invention, the content is 35 to 60% by mass. Further, in another embodiment of the present invention, the content is 38 to 60% by mass. Further, in another embodiment of the present invention, the content is 40 to 60% by mass. Further, in another embodiment of the present invention, the content is 42 to 60% by mass. Also, in the other aspects of the present invention The above-mentioned content is 45 to 60% by mass. Further, in another embodiment of the present invention, the content is from 47 to 60% by mass. Further, in another embodiment of the present invention, the content is 50% to 60% by mass.

Further, the content of the above compound, for example, in one embodiment of the present invention, is from 3 to 60% by mass 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 from 3 to 55% by mass. Further, in another embodiment of the present invention, the content is 3 to 45% by mass. Further, in another embodiment of the present invention, the content is from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% 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.

Further, the compound represented by the formula (I-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (3.1) to (3.4), and the formula (3.1), the formula (3.3) or the formula (3.4) The compound represented is preferred.

In particular, the compound represented by the formula (3.2) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention.

Further, when a Tni having a higher reaction rate is sought, it is preferred to use a compound represented by the formula (3.3) or the formula (3.4).

Further, in order to improve the solubility at a low temperature, the content of the compound represented by the formula (3.3) and the formula (3.4) is not preferable because it is 20% or more.

Further, the compound represented by the formula (I-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (3.1) to (3.4), and the formula (3.1), the formula (3.3) and/or the formula. The compound represented by (3.4) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (3.3) is preferably 2% by mass or more and 40% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. The more preferable content is, for example, 3% by mass or more and 40% by mass or less, 4% by mass or more and 40% by mass or less, 10% by mass or more and 40% by mass or less, 12% by mass or more and 40% by mass or less, and 14% by mass. 40% by mass or less, 16% by mass or more and 40% by mass or less, 20% by mass or more and 40% by mass or less, 23% by mass or more and 40% by mass or less, 26% by mass or more and 40% by mass or less, 30% by mass or more and 40% by mass or less. 34% by mass or more and 40% by mass or less, 37% by mass or more and 40% by mass or less, or 3% by mass or more and 4% by mass or less, 3% by mass or more and 10% by mass or less, 3% by mass or more and 12% by mass or less, and 3 mass% %% or more and 14% by mass or less, 3% by mass or more and 16% by mass or less, 3% by mass or more and 20% by mass or less, 3% by mass or more and 23% by mass or less, 3% by mass or more and 26% by mass or less, and 3% by mass or more and 30% by mass or less. Hereinafter, it is 3% by mass or more and 34% by mass or less, and 3% by mass or more and 37% by mass or less.

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

(wherein 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 type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-3) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the dripping trace, and the afterimage. The performance of dielectric anisotropy and the like is appropriately adjusted.

The content of the above compound is, for example, 3% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 4 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 25 to 60% by mass. Further, in another embodiment of the present invention, the content is 30% to 60% by mass. Further, in another embodiment of the present invention, the content is 35 to 60% by mass. Further, in another embodiment of the present invention, the content is 38 to 60% by mass. Further, in another embodiment of the present invention, the content is 40 to 60% by mass. Further, in another embodiment of the present invention, the content is 42 to 60% by mass. Further, in another embodiment of the present invention, the content is 45 to 60% by mass. Further, in another embodiment of the present invention, the content is from 47 to 60% by mass. Further, in another embodiment of the present invention, the content is 50% to 60% by mass.

Further, the content of the above compound, for example, in one embodiment of the present invention, is from 3 to 60% by mass 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 from 3 to 55% by mass. Further, in another embodiment of the present invention, the content is 3 to 45% by mass. Further, in another embodiment of the present invention, the content is from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% 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 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 content range to the intermediate value.

Further, the compound represented by the formula (I-3) is preferably a compound selected from the group consisting of compounds represented by the formulae (4.1) to (4.3), and more preferably a compound represented by the formula (4.3).

The content of the compound represented by the formula (4.3) is preferably 2% by mass or more and 30% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and more preferably 4% by mass or more and 30% by mass or less. , 6 quality More preferably, the amount is more than 30% by mass, more preferably from 8% by mass to 30% by mass, more preferably from 10% by mass to 30% by mass, even more preferably from 12% by mass to 30% by mass, more preferably from 14% by mass or more. 30% by mass or less is more preferably 16% by mass or more and 30% by mass or less is more preferably 18% by mass or more and 25% by mass or less is more preferably 20% by mass or more and 24% by mass or less is more preferably 22% by mass or more and 23% by mass. % below is especially good.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-4).

(wherein 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 type of the compound which can be combined is not particularly limited, but it can be combined in view of the properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-4) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the dripping trace, and the residue. The performance of the shadow, dielectric anisotropy, etc. is appropriately adjusted.

The content of the above compound is, for example, 3 to 50% by mass based on one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or other embodiments of the present invention are the aforementioned contents. It is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 6 to 50% by mass. Further, in another embodiment of the present invention, the content is 8 to 50% by mass. Further, in another embodiment of the present invention, the content is 10 to 50% by mass. Further, in another embodiment of the present invention, the content is from 12 to 50% by mass. Further, in another embodiment of the present invention, the content is 15 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 25 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, the content of the above compound, for example, in one embodiment of the present invention, is from 3 to 50% by mass 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 from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is 3 to 35% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% 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 10% by mass. Further, in another embodiment of the present invention, the content is 3 to 5% by mass.

In the case where a high complex refractive index is obtained, the effect is high when the content is set to a large value, and conversely, when the high Tni 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 content range 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 a compound represented by the formula (5.2) to the formula (5.4). For better.

The content of the compound represented by the formula (5.4) is preferably 2% by mass or more and 30% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The more preferable content is, for example, 4% by mass or more and 30% by mass or less, 65% by mass or more and 30% by mass or less, 8% by mass or more and 30% by mass or less, 10% by mass or more and 30% by mass or less, and 12% by mass. 30% by mass or less, 14% by mass or more and 30% by mass or less, 16% by mass or more and 30% by mass or less, 18% by mass or more and 30% by mass or less, 20% by mass or more and 30% by mass or less, 22% by mass or more and 30% by mass or less. 23% by mass or more and 30% by mass or less, 24% by mass or more and 30% by mass or less, 25% by mass or more and 30% by mass or less, or 4% by mass or more and 6% by mass or less, 4% by mass or more and 8% by mass or less, and 4% by mass %% or more and 10% by mass or less, 4% by mass or more and 12% by mass or less, 4% by mass or more and 14% by mass or less, 4% by mass or more and 16% by mass or less, 4% by mass or more and 18% by mass or less, and 4% by mass or more and 20% by mass or less. Hereinafter, 4% by mass or more and 22% by mass or less, 4% by mass or more and 23% by mass or less, 4% by mass or more and 24% by mass or less, and 4% by mass or more and 25% by mass or less.

Further, the compound represented by the formula (I) is selected from the formula The compound of the compound group represented by (I-5) is preferable.

(wherein 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 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 type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-5) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the dripping trace, and the afterimage. The performance of dielectric anisotropy and the like is appropriately adjusted.

The content of the above compound is, for example, 1 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 8 to 50% by mass. Further, in another embodiment of the present invention, the content is 11 to 50% by mass. Further, in another embodiment of the present invention, the content is 13 to 50% by mass. Further, in another embodiment of the present invention, the content is 15 to 50% by mass. Further, in another embodiment of the present invention, the content is 17 to 50% by mass. Also, in other embodiments of the present invention The above content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 25 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, the content of the above compound is, for example, 1 to 50% in one form of the present invention with respect to the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 1% to 40%. Further, in another embodiment of the present invention, the content is 1 to 35%. Further, in another embodiment of the present invention, the content is 1% to 30%. Further, in another embodiment of the present invention, the content is 1% to 20%. Further, in another embodiment of the present invention, the content is 1% to 15%. Further, in another embodiment of the present invention, the content is 1% to 10%. Further, in another embodiment of the present invention, the content is 1% to 5%.

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 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 content range to the intermediate value.

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

For example, the content of the compound represented by the formula (6.6) is preferably 2% by mass or more and 30% by mass or less, and more preferably 4% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention. 5 mass% or more and 30 mass% or less are more preferable, and 6 mass% or more and 30 mass% or less are more preferable, and 9 mass% or more and 30 mass% or less are more preferable, and 12 mass% or more and 30 mass% or less are more preferable, and 14 masses are more preferable. More preferably, it is more preferably 30% by mass or more, more preferably 16% by mass or more and 30% by mass or less, more preferably 18% by mass or more and 25% by mass or less, more preferably 20% by mass or more and 24% by mass or less, and more preferably 22% by mass or more. 23% by mass or less is particularly preferred.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (6.7) and the formula (6.8) having a structure similar to the compound represented by the formula (I-5).

It is preferred to adjust the content of the compound represented by the formula (6.7) in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

Specifically, the content of the compound represented by the formula (6.7) is 2% by mass or more based on 100% by mass of the total amount of the liquid crystal composition of the present invention. It is preferably 3% by mass or more, more preferably 5% by mass or more, and more preferably 7% by mass or more.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-6).

(wherein R ¹¹ and R ¹² are each independently represented by 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 each of X ¹¹ and X ¹² Independently represented by a fluorine atom or a hydrogen atom, either X ¹¹ or X ¹² is a fluorine atom).

The content of the compound represented by the 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 more preferably 4% by mass or more and 30% by mass or less. 5% by mass or more and 30% by mass or less is more preferably 6% by mass or more and 30% by mass or less, more preferably 9% by mass or more and 30% by mass or less, and more preferably 12% by mass or more and 30% by mass or less. It is more preferably 30% by mass or more and 30% by mass or less, more preferably 16% by mass or more and 30% by mass or less, more preferably 18% by mass or more and 25% by mass or less, more preferably 20% by mass or more and 24% by mass or less, and 22% by mass or less. The above 23% by mass or less is particularly preferable.

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

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-7).

(wherein R ¹¹ and R ¹² are each independently represented by 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 ^{12 is} independently represented by Fluorine or chlorine atom).

The content of the compound represented by the formula (I-7) is preferably from 1% by mass to 30% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and more preferably from 2% by mass to 30% by mass. Preferably, it is more preferably 3 mass% or more and 30 mass% or less, more preferably 4 mass% or more and 30 mass% or less, more preferably 6 mass% or more and 30 mass% or less, and even more preferably 8 mass% or more and 30 mass% or less. 10% by mass or more and 30% by mass or less is more preferably 12% by mass or more and 30% by mass or less, more preferably 15% by mass or more and 25% by mass or less, and more preferably 18% by mass or more and 24% by mass or less, and 21 mass%. More than 22% by mass or less is particularly preferable.

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

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-8).

(wherein R ¹⁶ and R ¹⁷ are each independently represented by 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 low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (I-8) depends on the solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. Seek performance and adjust it appropriately.

Specifically, the content of the compound represented by the formula (I-8) is preferably 5% by mass or more and 65% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and more preferably 10% by mass or more. 65 mass% or less is more preferable, 15 mass% or more and 65 mass% or less are more preferable, 20 mass% or more and 65 mass% or less are more preferable, and 25% by mass or more and 65 mass% or less are more preferable, and 30 mass% or more and 65 mass% are more preferable. % or less is more preferably 35% by mass or more and 65% by mass or less is more preferably 40% by mass or more and 65% by mass or less, more preferably 45% by mass or more and 60% by mass or less, and more preferably 50% by mass or more and 58% by mass or less. More preferably, 55 mass% or more and 56 mass% or less are particularly preferable.

Further, the compound represented by the formula (I-8) is preferably a compound selected from the group consisting of compounds represented by the formulae (9.1) to (9.10), and the formula (9.2), the formula (9.4) and the formula (9.7) The compound represented is more preferred.

Further, the compound represented by the formula (L) is preferably a compound represented by the formula (II), for example.

(R ²¹ and R ²² are each independently represented by 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 a 1,4-stretched ring. Hexyl or 1,4-phenylene, Q ² represents a single bond, -COO-, -CH ₂ -CH ₂ - or -CF ₂ O-).

The type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, still another embodiment of the present invention has three types. Further, in another embodiment of the present invention, it is four or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (II) is required to be in response to low temperature solubility, transfer temperature, electrical reliability, complex refractive index, process suitability, dripping trace, afterimage, The performance of the dielectric anisotropy or the like is appropriately adjusted.

The content of the above compound is, for example, 3 to 50% by mass based on one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 7 to 50% by mass. Further, in another embodiment of the present invention, the content is 10 to 50% by mass. Further, in another embodiment of the present invention, the content is 14 to 50% by mass. Further, in another embodiment of the present invention, the content is 16 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 23 to 50% by mass. Further, in another embodiment of the present invention, the content is 26 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, the content of the above compound is, for example, 3 to 50% by mass 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 from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is 3 to 35% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% 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 10% by mass. Further, in another embodiment of the present invention, the content is 3 to 5% by mass.

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

(R ²¹ and R ²² are each independently represented by an alkenyl group having 2 to 5 carbon atoms or 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 formula (II-1) is preferably adjusted in accordance with the performance of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and is preferably 4% by mass or more and 24% by mass or less. Preferably, it is more preferably 8 mass% or more and 18 mass% or less, and more preferably 12 mass% or more and 14 mass% or less.

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

Further, the compound represented by the formula (II) is preferably a compound represented by the formula (II-2), for example.

(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 types of compounds that can be combined are not particularly limited, but may be due to low temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like. Seeking performance to combine. 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 formula (II-2) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the dripping trace, and the residue. The performance of the shadow, dielectric anisotropy, etc. is appropriately adjusted.

The content of the above compound is, for example, 3 to 50% by mass based on one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 7 to 50% by mass. Further, in another embodiment of the present invention, the content is 10 to 50% by mass. Further, in another embodiment of the present invention, the content is 14 to 50% by mass. Further, in another embodiment of the present invention, the content is 16 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 23 to 50% by mass. Further, in another embodiment of the present invention, the content is 26 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, the content of the above compound, for example, in one form of the present invention, is from 3 to 50% by mass 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 from 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 35. quality%. Further, in another embodiment of the present invention, the content is 3 to 30% 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 10% by mass. Further, in another embodiment of the present invention, the content is 3 to 5% by mass.

Further, the compound represented by the formula (II-2) is preferably a compound represented by the formula (11.1) to the formula (11.3), for example.

The compound represented by the formula (11.1) may be contained in accordance with the properties of the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, etc., and may also contain a compound represented by the formula (11.2), or may contain a formula ( 11.1) Both the compound represented by the formula (11.2) and the compound represented by the formula (11.2) may contain all the compounds represented by the formula (11.1) to the formula (11.3).

The content of the compound represented by the formula (11.1) or the formula (11.2) is preferably 3% by mass or more and 40% by mass or less, and 5% by mass or more based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. The content is preferably 5% or more and 30% by mass or less, more preferably 5% by mass or more and 25% by mass or less, and most preferably 5% by mass or more and 20% by mass or less. In the best range, for example, it is 8% by mass or more and 20% by mass or less, 12% by mass or more and 20% by mass or less, 15% by mass or more and 20% by mass or less, 5% by mass or more and 18% by mass or less, and 5% by mass. Above 15% by mass, 5 The mass% or more is 12% by mass or less, the 5% by mass or more and 10% by mass or less, and the 5% by mass or more and 8% by mass or less.

In addition, the content of the compound represented by the formula (11.2) 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 more preferably 3% by mass or more and 35% by mass or less. 3 mass% or more and 30 mass% or less are more preferable, and 3 mass% or more and 25 mass% or less are more preferable, and 3 mass% or more and 20 mass% or less are especially preferable, and 3 mass% or more and 15 mass% or less are preferable. In the optimum range, for example, it is 3% by mass or more and 12% by mass or less, 3% by mass or more and 10% by mass or less, 3% by mass or more and 8% by mass or less, 3% by mass or more, 6% by mass or less, and 6% by mass or more. The mass% or less, the 8% by mass or more and 15% by mass or less, the 10% by mass or more and 15% by mass or less, and 12% by mass or more and 15% by mass or less.

When both the compound represented by the formula (11.1) and the compound represented by the formula (11.2) are contained, the total mass of the compound of the two is 13% by mass or more and 45 mass based on the total mass of the liquid crystal composition of the present invention. % or less is preferable, and 19% by mass or more and 40% by mass or less is more preferable, and 24% by mass or more and 35% by mass or less is more preferable.

Further, the compound represented by the formula (II) is preferably a compound represented by the formula (II-3), for example.

(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 compound that can be combined is not particularly limited, but it is required for low temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The performance of one to three kinds of compounds containing these is preferable.

The content of the compound represented by the formula (II-3) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the dropping trace, the afterimage, the dielectric anisotropy, and the like. Begging for performance and making appropriate adjustments.

Specifically, the content of the compound represented by the formula (II-3) is preferably from 2 to 45% by mass based on 100% by mass of the total of the liquid crystal composition of the present invention, and more preferably, for example, for example, Examples thereof include 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%, and 26 to 45 mass%. 29 to 45 mass%, or 2 to 45 mass%, 2 to 40 mass%, 2 to 35 mass%, 2 to 30 mass%, 2 to 25 mass%, 2 to 20 mass%, 2 to 15 mass% 2 to 10% by mass.

Further, a compound represented by the formula (II-3), for example, a compound represented by the formula (12.1) to the formula (12.3) is preferred.

The compound represented by the formula (12.1) may be contained in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index, and may also contain a compound represented by the formula (12.2), or may contain a formula ( 12.1) Both the compound represented by the formula and the compound represented by the formula (12.2).

The content of the compound represented by the formula (12.1) or the formula (12.2) is preferably 3% by mass or more and 40% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and 5% by mass or more and 40% by mass. % below is better, 7 More preferably, the mass% or more is 40% by mass or less, 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, and more preferably 12% by mass or more and 40% by mass or less, and more preferably 13% by mass. The above 40% by mass or less is more preferable, and 18% by mass or more and 30% by mass or less is more preferable, and 21% by mass or more and 25% by mass or less are particularly preferable.

In addition, the content of the compound represented by the formula (12.2) is preferably 3% by mass or more and 40% by mass or less, and more preferably 5% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention. 8% by mass or more and 40% by mass or less is more preferably 10% 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 15% by mass or more and 40% by mass or less, and 17 mass%. More than 30% by mass or less is more preferably, and 19% by mass or more and 25% by mass or less is particularly preferable.

In the case where 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 compound of the two is 15% by mass or more and 45% 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 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 particularly 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 100% by mass of the total amount 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 (12.3) may be an optically active compound.

Further, a compound represented by the formula (II-3), for example, a compound represented by the formula (II-3-1) is preferred.

(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 one to three kinds of the compounds containing these are preferred in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (II-3-1) is preferably adjusted in accordance with the performance of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and is preferably 1% by mass or more and 24% by mass. % or less is preferable, and 4% by mass or more and 18% by mass or less is more preferable, and 8% by mass or more and 14% by mass or less is more preferable.

Further, the compound represented by the formula (II-3-1) is preferably a compound represented by the formula (13.1) to the formula (13.4), and particularly preferably a compound represented by the formula (13.3).

Further, the compound represented by the formula (II) is preferably a compound represented by the formula (II-4), for example.

(R ²¹ and R ²² are each independently represented by 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, and it is also possible to contain two or more types, but it is preferable to mix them suitably according to the performance. The type of the compound that can be combined is not particularly limited, but one or two kinds of the compounds containing these are preferred in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. It is especially good to contain one to three types.

The content of the compound represented by the formula (II-4) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and 2% by mass or more and 15% by mass or less. More preferably, it is more preferably 3 mass% or more and 15 mass% or less, more preferably 4 mass% or more and 12 mass% or less, and particularly preferably 5 mass% or more and 7 mass% or less.

Further, the compound represented by the formula (II-4) is preferably a compound represented by the formula (14.1) to the formula (14.5), and particularly, the compound represented by the formula (14.2) and/or the formula (14.5) is Better.

Further, the compound represented by the formula (L) is preferably a compound represented by the formula (IV).

(wherein R ⁴¹ and R ⁴² are each independently represented by an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁴¹ and X ⁴² are each independently represented by a hydrogen atom or a fluorine atom).

The type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types. Further, in another embodiment of the present invention, there are five types. Further, in another embodiment of the present invention, it is six or more types.

Further, the compound represented by the formula (IV) is preferably a compound represented by the formula (IV-1), for example.

(wherein R ⁴³ and R ⁴⁴ are each independently represented by an alkyl group having 1 to 5 carbon atoms).

The content of the compound represented by the formula (IV-1) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, and the system. Appropriate performance such as process suitability, dripping marks, afterimage, dielectric anisotropy, etc. are appropriately adjusted.

The content of the above compound is, for example, 1 to 40% by mass 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 2 to 40% by mass. Further, in another embodiment of the present invention, the content is 4 to 40% by mass. Further, in another embodiment of the present invention, the content is 6 to 40% by mass. Further, in another embodiment of the present invention, the content is 8 to 40% by mass. Further, in another embodiment of the present invention, the content is 10 to 40% by mass. Further, in another embodiment of the present invention, the content is 10% by mass to 15% by mass. Further, in another embodiment of the present invention, the content is from 12 to 40% by mass. Further, in another embodiment of the present invention, the content is 15 to 40% by mass. Further, in another embodiment of the present invention, the content is 18 to 40% by mass. Further, in another embodiment of the present invention, the content is 21 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass 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 25% by mass. Further, in another embodiment of the present invention, the content is 1% by mass 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 1% by mass to 10% 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 1% by mass to 4% by mass.

Further, the compound represented by the formula (IV-1) is preferably a compound represented by the formula (18.1) to the formula (18.9), for example.

The type of the compound which can be combined is not particularly limited, but one to three kinds of the compounds containing these are preferable, and one to four types are more preferable. Further, since the molecular weight distribution of the selected compound is broad and effective for solubility, for example, one type of the compound represented by the formula (18.1) or (18.2) is selected and represented by the formula (18.4) or (18.5). One type of the compound is selected, one type is selected from the compounds represented by the formula (18.6) or the formula (18.7), and one type is selected from the compounds represented by the formula (18.8) or (18.9). Compounds, and combinations thereof are preferred. Among them, a compound represented by the formula (18.1), the formula (18.3) (18.4), the formula (18.6), and the formula (18.9) is preferred.

Further, the compound represented by the formula (IV) is preferably a compound represented by the formula (IV-2), for example.

(wherein R ⁴⁵ and R ⁴⁶ are each independently represented by an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, but at least one is represented by an alkenyl group having 2 to 5 carbon atoms, X ⁴¹ and X ⁴² are each independently represented by a hydrogen atom or a fluorine atom).

The type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (IV-2) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the dropping trace, the afterimage, the dielectric anisotropy, and the like. Begging for performance to adjust.

Specifically, the content of the compound represented by the formula (IV-2) is preferably from 0.5 to 40% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The more preferable content is, for example, 1 to 40% by mass, 2 to 40% by mass, 3 to 40% by mass, 5 to 40% by mass, 7 to 40% by mass, 9 to 40% by mass, and 12 to 40% by weight. % by mass, 15 to 40% by mass, 20 to 40% by mass, or 1 to 40% by mass, 1 to 30% by mass, 1 to 25% by mass, 1 to 20% by mass %, 1 to 15% by mass, 1 to 10% by mass, 1 to 5% by mass, and 1 to 4% by mass.

Further, the compound represented by the formula (IV-2) is preferably a compound represented by the formula (19.1) to the formula (19.8), and a compound represented by the formula (19.2) is preferred.

The molecular weight distribution of the compound selected as a component of the liquid crystal composition is also effective for solubility, and for example, each of the compounds represented by the formula (19.1) or (19.2) is selected from the formula (19.3) or (19.4) The compound represented by the formula 1 (19.5) or the compound represented by the formula (19.5) or the formula (19.6) is selected as one type, and the compound represented by the formula (19.7) or (19.8) is selected as the compound of the first type, and further A compound represented by the formula (19.9) or (19.10) is selected as one of the compounds, and such an appropriate combination is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (19.4) is 3% 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 the like. 25 mass% or less is more preferable, and 5 mass% or more and 20 mass% or less are more preferable, and 5 mass% or more and 15 mass% or less are more preferable, and 7 mass% or more and 10 mass% or less are especially preferable.

Further, the compound represented by the formula (L) is preferably a compound selected from the group represented by the formula (V).

(wherein R ⁵¹ and R ⁵² are each independently represented by 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 A ⁵¹ and A ⁵² Independently represented by 1,4-cyclohexylene or 1,4-phenylene, Q ⁵ represents a single bond or -COO-, and X ⁵¹ and X ⁵² are each independently represented as a fluorine atom or a hydrogen atom).

The type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 invention The state is 2 types. Further, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types.

The content of the above compound is, for example, 2 to 40% by mass 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 4 to 40% by mass. Further, in another embodiment of the present invention, the content is 7 to 40% by mass. Further, in another embodiment of the present invention, the content is 10 to 40% by mass. Further, in another embodiment of the present invention, the content is from 12 to 40% by mass. Further, in another embodiment of the present invention, the content is 15 to 40% by mass. Further, in another embodiment of the present invention, the content is 17% to 40% by mass. Further, in another embodiment of the present invention, the content is 18 to 40% by mass. Further, in another embodiment of the present invention, the content is 20 to 40% by mass. Further, in another embodiment of the present invention, the content is 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 2 to 40% by mass 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 2 to 30% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 25% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 15% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 10% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 5% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

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

(wherein R ⁵¹ and R ⁵² are each independently represented by 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 ⁵¹ and X ^52; Independently expressed as a fluorine atom or a hydrogen atom).

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

(wherein 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 content of the compound represented by the formula (V-1-1) is preferably 1% by mass or more and 15% by mass or less, and more preferably 2% by mass or more based on 100% by mass of the total amount of the liquid crystal composition of the present invention. 15% by mass or less is more preferable, and it is more preferably 3% by mass or more and 10% by mass or less, and particularly preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-1) is preferably a compound represented by the formula (20.1) to the formula (20.4), and a compound represented by the formula (20.2) is more preferable.

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

(wherein 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 content of the compound represented by the formula (V-1-2) is preferably 1% by mass or more and 15% by mass or less, and more preferably 2% by mass or more based on 100% by mass of the total amount of the liquid crystal composition of the present invention. 15% by mass or less is more preferable, and it is more preferably 3% by mass or more and 10% by mass or less, and particularly preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-2) is preferably a compound represented by the formula (21.1) to the formula (21.3), and a compound represented by the formula (21.1) is more preferable.

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

(wherein 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 content of the compound represented by the formula (V-1-3) is preferably 1% by mass or more and 15% by mass or less, and more preferably 2% by mass or more based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The mass% or less is more preferably 3% by mass or more and 10% by mass or less, more preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-3) is a compound represented by the formula (22.1) to the formula (22.3). The compound represented by the formula (22.1) is more preferable.

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

(wherein R ⁵¹ and R ⁵² are each independently represented by 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 ⁵¹ and X ^52; Independently expressed as a fluorine atom or a hydrogen atom).

The type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 above compound is, for example, 2 to 40% by mass 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 4 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is 15 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 17 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 18 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 20 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the above compound is based on the total mass of the liquid crystal composition of the present invention. 2 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 30% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 25% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 15% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 10% by mass. Further, in another embodiment of the present invention, the content of the compound is 2 to 5% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

In the case where the liquid crystal composition of the present invention is a high Tni embodiment, it is preferred to use a compound represented by the formula (V-2), and a low viscosity embodiment is preferable. It is preferred that the content is less.

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

(wherein 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).

Further, the compound represented by the formula (V-2-1) is preferably a compound represented by the formula (23.1) to the formula (23.4), and the compound represented by the formula (23.1) and/or the formula (23.2) is more. good.

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

(wherein 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).

Further, the compound represented by the formula (V-2-2) is preferably a compound represented by the formula (24.1) to the formula (24.4), and the compound represented by the formula (24.1) and/or the formula (24.2) is more. good.

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

(wherein 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 type of the compound that can be combined is not particularly limited, but may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, it is three or more types.

The content of the compound represented by the formula (V-3) is preferably 2% by mass or more and 16% by mass or less, and more preferably 4% by mass or more based on 100% by mass of the total amount of the liquid crystal composition of the present invention. 16% by mass or less is more preferable, and it is more preferably 7 mass% or more and 13 mass% or less, and particularly preferably 8 mass% or more and 11 mass% or less.

Further, the compound represented by the formula (V-3) is preferably a compound represented by the formula (25.1) to the formula (25.3).

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

(wherein R ⁶¹ and R ⁶² are each independently represented by a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms or a linear alkenyl group having 2 to 10 carbon atoms) .

The type of the compound which can be combined is not particularly limited, but one or three kinds of the compounds containing these are preferable in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. It is more preferable to contain one type to four types, and one type to more than one type.

The content of the compound represented by the formula (VI) is preferably 35 mass% or less, more preferably 25% by mass or less, and even more preferably 15 mass% or less, based on 100% by mass of the total amount of the liquid crystal composition of the present invention. good.

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

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

(wherein R ⁷¹ and R ⁷² are each independently represented by a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms or a linear alkenyl group having 4 to 10 carbon atoms) .

The type of the compound which can be combined is not particularly limited, but one or three kinds of the compounds containing these are preferable in view of the low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. It is more preferable to contain one type to four types, and one type to more than one type.

The content of the compound represented by the formula (VII) is 100% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. Preferably, it is more preferably 25% by mass or less, and still more preferably 15% by mass or less.

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

<About the compound represented by the formula (M)>

The liquid crystal composition of the present invention preferably contains a compound represented by the formula (M).

(wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently be -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 are each independently a group representing a group selected from the group consisting of: (d) 1,4- cyclohexylene (this group present in one of the -CH ₂ - or of two or more adjacent -CH ₂ - may be substituted with -O- or -S-); and ( e) 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= which may be substituted in this group may be substituted by -N=).

The above-mentioned group (d) and group (e) are each independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 are each independently represented as 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} stored In the case of a plurality of cases, they may be the same or different, PM is 2, 3 or 4 and C ^M2 has a plurality of cases, and they may be the same or different, and X ^M1 and X ^M3 are independently expressed as 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. However, the compound represented by the formula (i) is excluded).

The type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other implementations of the invention The form is 2 types. Further, in another embodiment of the present invention, there are three types. Furthermore, in another embodiment of the present invention, there are four types. Further, in another embodiment of the present invention, there are five types. Further, in another embodiment of the present invention, there are six types. Further, in another embodiment of the present invention, there are seven or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (M) is required to satisfy the low temperature solubility, transfer temperature, electrical reliability, complex refractive index, process suitability, dripping trace, afterimage, dielectric The performance of anisotropy and the like is appropriately adjusted.

The content of the above compound is, for example, 1 to 95% 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 10 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 30 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is 40 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 45 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 50 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 55 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 60 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is 65 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is 70 to 95% by mass. For example, as still another embodiment of the present invention, The content of the aforementioned compound is from 75 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 80 to 95% by mass.

In addition, the content of the above compound is, for example, 1 to 95% by mass in 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 of the compound is from 1 to 85% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 75% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 65% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 55% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 45% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 25% by mass.

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

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 An alkenyl group having 4 to 5 carbon atoms is preferred.

Further, R ^{M1 is} in the form of a ring to which it is bonded, which is cyclohexane, megbrane 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.

In the case where the chemical stability of the liquid crystal composition is sought, it is preferred that the compound represented by the formula (M) has no chlorine atom in its molecule.

Specifically, the content of the compound represented by the formula (M) containing a chlorine atom is preferably 3% or less based on 100% by mass of the total amount of the liquid crystal composition, and preferably 1% or less, and preferably 0.5% or less. Preferably, it is preferred that it is not substantially contained. Further, it does not substantially contain a chlorine atom-containing compound such as a compound which is formed of an impurity which is not desired when the liquid crystal composition is mixed with a compound.

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

(wherein 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 as a hydrogen atom or A fluorine atom, Y ⁸ represents a fluorine atom or -OCF ₃ ).

The type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Moreover, in another embodiment of the present invention, there are three types. on.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (VIII) is dependent on the solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, process suitability, dripping trace, afterimage, and The performance of electrical anisotropy and the like is appropriately adjusted.

The content of the above compound is, for example, 2 to 40% 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 4 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 5 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 14 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 15 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 21 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 23 to 40% by mass.

Further, the content of the above compound is, for example, 2 to 40% by mass 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 2 to 30% by mass. In still another embodiment of the present invention, the content of the compound is 2 to 25% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 21% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 16% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 12% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 8% by mass. In still another embodiment of the present invention, the content of the compound is 2 to 5% by mass.

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

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

(In the formula, 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 type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 formula (VIII-1), specifically, the compound represented by the formula (26.1) to the formula (26.4) is preferable, and the compound represented by the formula (26.1) or the formula (26.2) is Preferably, the compound represented by the formula (26.2) is more preferably.

The content of the compound represented by the formula (26.1) is from 1% by mass to 40% 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 complex refractive index. Preferably, 1% by mass or more and 30% by mass or less is more preferably 1% by mass. The above 20% by mass or less is more preferably 2% by mass or more and 15% by mass or less is more preferable, and 2% by mass or more and 10% by mass or less is more preferable, and 2% by mass or more and 9% by mass or less is particularly preferable. In a particularly preferable range, for example, 2% by mass or more and 7% by mass or less, 2% by mass or more and 6% by mass or less, 2% by mass or more and 5% by mass or less, 2% by mass or more and 4% by mass or less, and 2% by mass or more are exemplified. 5% by mass or less, 3% by mass or more and 9% by mass or less, 4% by mass or more and 9% by mass or less, 5% by mass or more and 9% by mass or less, and 6% by mass or more and 9% by mass or less.

The content of the compound represented by the formula (26.2) is 2% by mass or more and 40% 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 complex refractive index. It is more preferably 4% by mass or more and 30% by mass or less, more preferably 4% by mass or more and 20% by mass or less, and particularly preferably 4% by mass or more and 15% by mass or less. In a particularly preferable range, for example, 4% by mass or more and 12% by mass or less, 4% by mass or more and 10% by mass or less, 4% by mass or more and 8% by mass or less, 4% by mass or more and 6% by mass or less, and 6% by mass or more, and 15% by mass or more are exemplified. The mass% or less, the 8% by mass or more and 15% by mass or less, the 10% by mass or more and 15% by mass or less, and 12% by mass or more and 15% by mass or less.

The total content of the compound represented by the formula (26.1) and the compound represented by the formula (26.2) is preferably 5 to 40% by mass, more preferably 10 to 30% by mass, based on the total mass of the liquid crystal composition of the present invention. Good, 10~25% by mass is better, and 10~20% by mass is especially good.

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

(In the formula, 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 type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Alternatively, in still another embodiment of the present invention, it is three or more types.

The content of the compound represented by the formula (VIII-2) is preferably 2.5% by mass or more and 25% by mass or less, more preferably 3% by mass or more, in view of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The mass% or less is more preferably 4% by mass and 20% 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 10% by mass or less.

Further, the compound represented by the formula (VIII-2) is preferably a compound represented by the formula (27.1) to the formula (27.4), and more preferably a compound represented by the formula (27.2).

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

(In the formula, 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 type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 formula (VIII-3), specifically, the compound represented by the formula (26.11) to the formula (26.14) is preferably a compound represented by the formula (26.11) or the formula (26.12). Preferably, the compound represented by the formula (26.12) is more preferably.

Further, a compound represented by the formula (M), for example, a compound represented by the formula (IX) is preferred.

(wherein 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 as 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 type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types. Further, in another embodiment of the present invention, there are five types. Further, in another embodiment of the present invention, it is six or more types.

The liquid crystal composition of the present invention, represented by the formula (IX) The content of the compound needs to be appropriately adjusted in view of the low temperature solubility, transfer temperature, electrical reliability, complex refractive index, process suitability, dripping trace, afterimage, dielectric anisotropy and the like.

The content of the above compound is, for example, 3 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. Further, for example, in another embodiment of the present invention, the content of the compound is 5 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 24 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 28 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 30 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 34 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 39 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 40 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 42 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 45 to 70% by mass.

Further, the content of the above compound is, for example, 3 to 70% by mass 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 3 to 60% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 55% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 50% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 45% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 40% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 30% by mass. According to still another embodiment of the present invention, it is 25% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 20% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 15% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 10% by mass.

It is preferable to maintain the liquid crystal composition having a low viscosity and a high reaction rate in the liquid crystal composition of the present invention, and it is preferable to make the lower limit value lower and the upper limit value lower. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high Tni and a liquid crystal composition in which image sticking is unlikely to occur, it is preferable that the lower limit value is lower and the upper limit value is lower. Further, in order to keep the driving voltage at a low value and to make the dielectric anisotropy a large value, it is preferable to make the lower limit value higher and the upper limit value higher.

Further, the compound represented by the formula (IX) is a formula (IX-1) The compound represented is preferred.

(wherein 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; X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents Fluorine atom or -OCF ₃ ).

The type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. 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 of two types. Further, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, it is four or more types.

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

(wherein 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 particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other implementations of the invention The form is 2 types. Further, in another embodiment of the present invention, it is three or more types.

The content of the compound represented by the formula (IX-1-1) is preferably a lower limit and a lower limit depending on the embodiment, in view of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

With respect to the total mass of the liquid crystal composition of the present invention, 1% is preferable, and 5% is more preferable, and 25% is the upper limit of the content of the aforementioned compound. Preferably, 22% is better, 20% is better, and 19% is especially good.

In the case where only one of the above compounds is used, it is preferably 1%, more preferably 2%, more preferably 5%, and 6% is the lower limit of the content of the above compound with respect to the total mass. More preferably, with respect to the above total mass, 25% is preferable, 20% is more preferable, 15% is more preferable, 12% is more preferable, and 10% is special in terms of the upper limit of the content of the aforementioned compound. Good, 9% is the best.

In the case where two kinds of the above-mentioned compounds are used, the lower limit of the total content of the above two kinds of the total mass is preferably 8%, more preferably 10%, and still more preferably 13%. With respect to the upper limit of the total content of the above two kinds of compounds with respect to the above total mass, 25% is preferable, 22% is more preferable, 20% is more preferable, and 19% is more preferable.

When the solubility of the liquid crystal composition is emphasized, it is preferred to use a compound represented by the above formula (IX-1-1), and to increase the content of the compound represented by the formula (IX-1-1). In the case, it is preferred to use two kinds of the compounds.

Relative to the aforementioned total mass of the aforementioned compound, in a real The embodiment is 1 to 25% by mass, 2 to 20% by mass in other embodiments, 4 to 10% by mass in other embodiments, and 10 to 30% by mass in other embodiments, and still other embodiments are 14 to 20% by mass, and other embodiments are 16 to 20% by mass, and still other embodiments are 21 to 40% by mass.

Further, for example, the content of the compound is from 1 to 40% by mass in one embodiment, from 1 to 35% by mass in other embodiments, and from 1 to 35% in other embodiments, with respect to the total mass of the liquid crystal composition of the present invention. ~30% by mass, and other embodiments are 1 to 25% by mass, and still other embodiments are 1 to 10% by mass, and still other embodiments are 1 to 7 mass%, and still other embodiments are 1 to 5 quality%.

Further, the compound represented by the formula (IX-1-1) is preferably a compound represented by the formula (28.1) to the formula (28.5), and the compound represented by the formula (28.3) and/or the formula (28.5) is more. good.

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 30% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. More preferable examples of the content include 2% by mass or more and 20% by mass or less, 2% by mass or more and 15% by mass or less, 2% by mass or more and 12% by mass or less, 2% by mass or more and 9% by mass or less, and 2% by mass. %% or more and 5% by mass or less, or 4% by mass or more and 20% by mass or less, 6% by mass or more and 20% by mass or less, 8% by mass or more and 20% by mass or less, 10% by mass or more and 20% by mass or less, and 15% by mass or more and 20% Below mass%.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.5) is 3% 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 the like. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 3 mass% or more and 10 mass% or less are especially preferable.

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

(wherein 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).

There is no limit to the type of compound that can be combined, but consider the dissolution of low temperature. The solvability, the transfer temperature, the electrical reliability, the complex refractive index, and the like are preferably one to three types, and more preferably one to four.

The content of the compound represented by the formula (IX-1-2) is preferably 1% by mass or more and 30% by mass or less, and 5% by mass or more and 30% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. % or less is more preferably 8 mass% or more and 30 mass% or less, more preferably 10 mass% or more and 25 mass% or less, more preferably 14 mass% or more and 22 mass% or less, and more preferably 16 mass% or more and 20 mass% or less. It is especially good.

Further, the compound represented by the formula (IX-1-2), the compound represented by the formula (29.1) to the formula (29.4) is preferably a compound represented by the formula (29.2) and/or the formula (29.4). good.

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

(wherein 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 by a hydrogen atom or A fluorine atom, Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ ).

The type of the compound that can be combined is not limited, but it is preferably used in combination in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type, and two types in other embodiments, three types in other embodiments, four types in other embodiments, and five types in other embodiments, and In still another embodiment, a combination of six or more types is used.

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

(wherein 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, and complex refractive index.

The content of the compound represented by the formula (IX-2-1) is preferably an upper limit value and a lower limit value in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. .

For example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. In other embodiments, the content of the compound is 2 to 40% by mass. In still another embodiment, the content of the compound is 4 to 40% by mass, and in still other embodiments, the content of the compound is 10 to 40% by mass, and in still other embodiments, the content of the compound is 14 to 40% by mass. In still another embodiment, the content of the compound is 16 to 40% by mass, and in still other embodiments, the content of the compound is 21 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is from 1 to 35% by mass, and in still other embodiments, The content of the compound is 1 to 30% by mass, and in still other embodiments, the content of the compound is 1 to 25% by mass, and in still other embodiments, the content of the compound is 1 to 22% by mass, and still other embodiments The content of the compound is 1 to 20% by mass, and in still other embodiments, the content of the compound is 1 to 10% by mass, and in still other embodiments, the content of the compound is 1 to 7% by mass, and further implementation is carried out. In the form, the content of the above compound is 1 to 5% by mass.

Further, the compound represented by the formula (IX-2-1) is preferably a compound represented by the formula (30.1) to the formula (30.4), and a compound represented by the formula (30.1) to the formula (30.2) is more preferable.

Further, the compound represented by the formula (IX-2) is a general formula The compound represented by (IX-2-2) is preferred.

(wherein 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 one to three types in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and it is more preferable to combine one to four types.

The content of the compound represented by the formula (IX-2-2) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is from 2 to 40% by mass, and further In another embodiment, the content of the compound is 4 to 40% by mass, and in still another embodiment, the content of the compound is 10 to 40% by mass, and in still other embodiments, the content of the compound is 14 to 40% by mass. Further, in still another embodiment, the content of the compound is 16 to 40% by mass, and in still another embodiment, the content of the compound is 21 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is from 1 to 35% by mass, and in still other embodiments The content of the compound is 1 to 30% by mass, and in still other embodiments, the content of the compound is 1 to 25% by mass, and further implementation is carried out. In the form, the content of the compound is from 1 to 22% by mass, and in still other embodiments, the content of the compound is from 1 to 15% by mass, and in still other embodiments, the content of the compound is from 1 to 12% by mass, and further In the embodiment, the content of the compound is from 1 to 8% by mass, and in still other embodiments, the content of the compound is from 1 to 4% by mass.

Further, the compound represented by the formula (IX-2-2) is preferably a compound represented by the formula (31.1) to the formula (31.4), and a compound represented by the formula (31.1) to the formula (31.4) is more preferable.

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

(wherein 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 one type or two types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (IX-2-3) is preferably 1% by mass or more and 30% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 3% by mass or more and 20% by mass. % below is better, 6 mass% More preferably, the above 15% by mass or less is more preferably 8% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (IX-2-3) is preferably a compound represented by the formula (32.1) to the formula (32.4), and the compound represented by the formula (32.2) and/or the formula (32.4) is more. good.

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

(wherein 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 formula (IX-2-4) is preferably 1% by mass or more and 30% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 3% by mass or more and 20% by mass. % or less is more preferable, and 6 mass% or more and 15 mass% or less are more preferable, and 8 mass% or more and 10 mass% or less are particularly preferable.

Further, the compound represented by the formula (IX-2-4) is preferably a compound represented by the formula (33.1) to the formula (33.6), and the compound represented by the formula (33.1) and/or the formula (33.3) is more. good.

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

(wherein 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 the solubility in the low temperature, the transfer temperature, the electrical reliability, the complex refractive index, and the like are considered, and they can be used in combination as appropriate in each embodiment. For example, one embodiment of the present invention is one type, and two types in other embodiments, three types in other embodiments, and four or more types in other embodiments.

The content of the compound represented by the formula (IX-2-5), considering the dissolution at low temperature The characteristics of the solvability, the transfer temperature, the electrical reliability, and the complex refractive index have an upper limit and a lower limit in each embodiment.

For example, in one embodiment of the present invention, the content of the compound is 4 to 45% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 8 to 45% by mass. In other embodiments, the content of the compound is 12 to 45% by mass, and in still other embodiments, the content of the compound is 21 to 45% by mass, and in still other embodiments, the content of the compound is 30 to 45% by mass. In still another embodiment, the content of the compound is 31 to 45% by mass, and in still another embodiment, the content of the compound is 34 to 45% by mass. Further, for example, in one embodiment of the present invention, the content of the compound is 4 to 45% by mass based on the total mass, and in other embodiments, the content of the compound is 4 to 40% by mass, and further embodiments The content of the compound is 4 to 35% by mass, and in still other embodiments, the content of the compound is 4 to 32% by mass, and in still other embodiments, the content of the compound is 4 to 22% by mass, and further implementation is carried out. In the form, the content of the compound is 4 to 13% by mass, and in still other embodiments, the content of the compound is 4 to 9% by mass, and in still other embodiments, the content of the compound is 4 to 8% by mass, and further In an embodiment, the content of the compound is 4 to 5% by mass.

It is preferable to maintain the liquid crystal composition having a low viscosity and a high reaction rate in the liquid crystal composition of the present invention, and it is preferable that the lower limit is lower and the upper limit is lower. Further, it is necessary to maintain a liquid crystal composition in which the Tni of the liquid crystal composition of the present invention is high, and it is difficult to cause a residual liquid crystal composition, and the lower limit value is made lower, and the upper limit value is made low. It is better. Further, in order to keep the driving voltage at a low value and to make the dielectric anisotropy a large value, it is preferable to make the lower limit value higher and the upper limit value higher.

Further, the compound represented by the formula (IX-2-5) is preferably a compound represented by the formula (34.1) to the formula (34.7), and the formula (34.1), the formula (34.2), the formula (34.3), and/or The compound represented by the formula (34.5) is more preferable.

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

(wherein 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 by a hydrogen atom or A fluorine atom, 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).

(wherein 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 one type or two types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (IX-3-1) is preferably 3% by mass or more and 30% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and 7 mass% or more and 30% by mass. % or less is more preferably, and 13% by mass or more and 20% by mass or less are more preferable, and 15% by mass or more and 18% by mass or less are particularly preferable.

Further, the compound represented by the formula (IX-3-1) is preferably a compound represented by the formula (35.1) to the formula (35.4), and the compound represented by the formula (35.1) and/or the formula (35.2) is more. good.

Further, the compound represented by the formula (i) is preferably a compound represented by the formula (X). Except for the compound represented by the formula (i).

(wherein, X ¹⁰¹ to X ¹⁰⁴ are each independently represented by a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , Q ¹⁰ represents a single bond or -CF ₂ O-, and R ¹⁰ represents a carbon atom An alkyl group of 1 to 5, 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 are each independently represented by 1,4-cyclohexylene group, 1,4-extension Phenyl or However, the hydrogen atom on the 1,4-phenylene group may be replaced by a fluorine atom). 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 complex refractive index. For example, one embodiment of the present invention is one type. Further, in another embodiment of the present invention, there are two types. In other embodiments, there are three types. Furthermore, in other embodiments, there are four types. Further, in other embodiments, it is five or more types.

The content of the compound represented by the formula (X) is an upper limit and a lower limit in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 3 to 45% by mass. In other embodiments, the content of the compound is 6 to 45% by mass, and in other embodiments, the content of the compound is 8 to 45% by mass, and in still other embodiments, the content of the compound is 9 to 45 mass. In still another embodiment, the content of the compound is 11 to 45% by mass, and in still another embodiment, the content of the compound is 12 to 45% by mass. In still another embodiment, the content of the compound is from 18 to 45% by mass. In still another embodiment, the content of the compound is from 19 to 45% by mass. In still another embodiment, the content of the compound is 23 to 45% by mass. In still another embodiment, the content of the compound is from 25 to 45% by mass. Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 45% by mass based on the total mass, and in another embodiment, the content of the compound is 2 to 35% by mass. In still another embodiment, the content of the compound is 2 to 30% by mass, and in still other embodiments, the content of the compound is 2 to 25% by mass, and in still other embodiments, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 13% by mass, and in still other embodiments, the content of the compound is 2 to 9% by mass, and in still other embodiments, the content of the compound is 2 to 6 mass. %, in still another embodiment, the content of the compound is 2 to 3% by mass.

A liquid crystal composition having a fast reaction rate is necessary, and it is preferable to keep the viscosity of the liquid crystal composition at a low value, and to make the lower limit value and the upper limit value lower.

Further, in the case where a liquid crystal composition in which image sticking is hard to occur is necessary, it is preferable that the lower limit value and the upper limit value are lower.

Further, in order to keep the driving voltage at a low value and to make the dielectric anisotropy a large value, it is preferable to make the lower limit value and the upper limit value higher.

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

(wherein, X ¹⁰¹ to X ¹⁰³ are each independently represented by 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 alkane having 1 to 4 carbon atoms. Oxy).

The compound that can be combined is not particularly limited, but it is considered to dissolve at a low temperature. The properties, transfer temperature, electrical reliability, complex refractive index, and the like can be appropriately combined in each embodiment. For example, one embodiment of the present invention is one type. Further, in another embodiment of the present invention, there are two types. In other embodiments, there are three types. Further, in other embodiments, there are four types. Further, in other embodiments, it is five or more types.

The content of the compound represented by the formula (X-1) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 3 to 40% by mass. In other embodiments, the content of the compound is 5 to 40% by mass, and in other embodiments, the content of the compound is 6 to 40% by mass, and in still other embodiments, the content of the compound is 7 to 40% by mass. In still another embodiment, the content of the compound is 8 to 40% by mass, and in still another embodiment, the content of the compound is 9 to 40% by mass. In still another embodiment, the content of the compound is from 13 to 40% by mass. In still another embodiment, the content of the compound is from 18 to 40% by mass. In still another embodiment, the content of the compound is 23 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is 2 to 30% by mass, and further embodiments The content of the compound is 2 to 25% by mass, and in still other embodiments, the content of the compound is 2 to 20% by mass, and further In other embodiments, the content of the compound is 2 to 15% by mass, and in still other embodiments, the content of the compound is 2 to 10% by mass, and in still other embodiments, the content of the compound is 2 to 6% by mass. In still another embodiment, the content of the compound is 2 to 4% by 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).

(wherein 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 in view of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, it can be suitably combined in each embodiment. For example, one embodiment of the present invention is one type. Further, in another embodiment of the present invention, there are two types. In other embodiments, there are three types. Further, in other embodiments, it is four or more types.

The content of the compound represented by the formula (X-1-1) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is from 3 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is from 4 to 30% by mass. In other embodiments, the content of the aforementioned compound is 6 to 30 In another embodiment, the content of the compound is 9 to 30% by mass, and in other embodiments, the content of the compound is 12 to 30% by mass, and in other embodiments, the content of the compound is Further, in another embodiment, the content of the compound is from 18 to 30% by mass. In still another embodiment, the content of the compound is 21 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 3 to 30% by mass based on the total mass, and in other embodiments, the content of the compound is from 3 to 20% by mass, and in still other embodiments Further, the content of the compound is from 3 to 13% by mass, and in still other embodiments, the content of the compound is from 3 to 10% by mass, and in still other embodiments, the content of the compound is from 3 to 7% by mass.

Further, the compound represented by the formula (X-1-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (36.1) to the formula (36.4) is preferably contained therein. A compound represented by the formula (36.1) and/or the formula (36.2) is preferred.

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-1-3).

(wherein 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 it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (X-1-3) is preferably 1% by mass or more, more preferably 2% by mass or more, and more preferably 6% by mass or more based on the total mass of the liquid crystal composition of the present invention. Better. Further, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like, the maximum ratio is preferably 20% by mass or less, more preferably 16% by mass or less, more preferably 12% by mass or less, and 10% by mass or less. good.

Further, the compound represented by the formula (X-1-3) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (38.1) to the formula (38.4) is preferable, and The compound represented by the formula (38.2) is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (38.2) is preferably 1% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 2% by mass and 25% by mass. The following is more preferable, and 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 3 mass% or more and 10 mass% or less are more preferable, and 3 mass% or more and 8 mass% or less are more preferable. More preferably, 4% by mass or more and 5% by mass or less are particularly preferable.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2). Except for the compound represented by the formula (i).

(wherein, X ¹⁰² to X ¹⁰³ are each independently represented by 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, and 2 to 2 carbon atoms; 5 alkenyl or alkoxy having 1 to 4 carbon atoms).

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

Further, 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-2-1).

(wherein 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 to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

The content of the compound represented by the formula (X-2-1) 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. The amount is preferably 5% by mass or more and 16% by mass or less, more preferably 5% by mass or more and 12% by mass or less, and particularly preferably 5% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (X-2-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (39.1) to the formula (39.4) is preferable, and The compound represented by the formula (39.2) is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (39.2) is preferably 1% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 2% by mass and 25% by mass. The following is more preferable, and it is more preferably 3 mass% or more and 20 mass% or less, more preferably 3 mass% or more and 15 mass% or less, more preferably 3 mass% or more and 10 mass% or less, and 4 mass% or more and 8 mass% or less. More preferably, 4% by mass or more and 6% by mass or less are particularly preferable.

Further, 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).

(wherein 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 that can be combined is not particularly limited, but it is considered to dissolve at a low temperature. The combination of one type and two types or more is preferable in terms of properties, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the 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. The following is preferable, and it is more preferably 6 mass% or more and 16 mass% or less, more preferably 9 mass% or more and 12 mass% or less, and particularly preferably 9 mass% or more and 10 mass% or less.

Further, the compound represented by the formula (X-2-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (40.1) to the formula (40.4) is preferably contained therein. The compound represented by the formula (40.2) is preferred.

Further, the compound represented by the formula (X) is preferably a compound represented by the formula (X-3). Except for the compound represented by the formula (i).

(wherein, X ¹⁰² to X ¹⁰³ are each independently represented by a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 or 5 carbon atoms or an alkane having 1 to 4 carbon atoms. Oxy).

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

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

(wherein 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 alkoxy group having 1 to 4 carbon atoms).

The compound to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

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).

(wherein 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 to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

The content of the compound represented by the formula (X-4-1) 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. The following is preferable, and it is more preferably 5 mass% or more and 17 mass% or less, more preferably 10 mass% or more and 15 mass% or less, and more preferably 10 mass% or more and 13 mass% or less.

Further, the compound represented by the formula (X-4-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (42.1) to the formula (42.4) is preferable, and The compound represented by the formula (42.3) is more preferable.

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

(wherein 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 to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

The content of the compound represented by the formula (X-4-2) 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. The following is preferable, and it is more preferably 5 mass% or more and 17 mass% or less, more preferably 10 mass% or more and 15 mass% or less, and more preferably 10 mass% or more and 13 mass% or less.

Further, the compound represented by the formula (X-4-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (42.11) to the formula (42.14) is preferably contained therein. The compound represented by the formula (42.13) or the formula (42.14) is more preferably.

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

(wherein 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 to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

The content of the compound represented by the 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 solubility at low temperature, transfer temperature, electrical reliability, and the like. The following is preferable, and it is more preferably 5 mass% or more and 17 mass% or less, more preferably 10 mass% or more and 15 mass% or less, and more preferably 10 mass% or more and 13 mass% or less.

Further, the compound represented by the formula (X-4-3) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (42.21) to the formula (42.24) is preferably contained therein. The compound represented by the formula (42.22) is more preferably.

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

(wherein 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 alkoxy group having 1 to 4 carbon atoms).

The compound to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

Further, the compound represented by the formula (X-5) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-5-1).

(wherein 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 to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

Further, the compound represented by the formula (X-5-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (43.1) to the formula (43.4) is preferable, and The compound represented by the formula (43.2) is more preferable.

Further, a compound represented by the formula (X'-7) similar to the compound represented by the above formula (X) may be contained in the liquid crystal compound of the invention.

(In the 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).

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

The content of the compound represented by the formula (X'-7) is an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is 4 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 5 to 30% by mass. In another embodiment, the content of the compound is 6 to 30% by mass, and in still another embodiment, the content of the compound is 8 to 30% by mass, and in still other embodiments, the content of the compound is 9 to 30% by mass. In still another embodiment, the content of the compound is 11 to 30% by mass, and in still another embodiment, the content of the compound is 14 to 30% by mass. In still another embodiment, the content of the compound is from 18 to 30% by mass.

Also, for example, with respect to the aforementioned total mass, in the present invention In one embodiment, the content of the compound is 4 to 30% by mass, and in other embodiments, the content of the compound is 4 to 20% by mass, and in other embodiments, the content of the compound is 4 to 13% by mass, and further In another embodiment, the content of the compound is 4 to 10% by mass, and in still other embodiments, the content of the compound is 4 to 7% by mass.

Further, the compound represented by the formula (X'-7) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (44.11) to the formula (44.14) is preferable, and the formula is contained therein. The compound represented by (44.13) is more preferred.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-6).

(wherein 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 it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (X-6) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

With respect to the total mass of the liquid crystal composition of the present invention, the lower limit of the content of the aforementioned compound is preferably 1%, more preferably 2%, and the upper limit of the content of the aforementioned compound, 25 % is better, 20% is better, 18% is better, and 16% is better.

In the case where only one of the above compounds is used, 1% is preferable, 2% is more preferable, and 3% is more preferable, and 4% is the lower limit of the content of the compound of the total mass. Particularly preferably, 15% is preferable, 12% is more preferable, 10% is more preferable, 8% is particularly preferable, and 7% is the most relative to the upper limit of the content of the aforementioned compound of the total mass. good.

When two types of the above-mentioned compounds are used, the lower limit of the total content of the above two compounds is preferably 5%, more preferably 7%, and even more preferably 10%. With respect to the upper limit of the total content of the above two compounds with respect to the above total mass, 25% is preferable, 20% is more preferable, 18% is more preferable, 16% is more preferable, and 13% is Better, 10% is excellent and 9% is best.

When the solubility of the liquid crystal composition is important, it is preferable to use two kinds of the compounds represented by the above formula (ii), and in order to increase the content of the compound represented by the formula (ii), two kinds of the compounds are used. It is better.

For example, in one embodiment of the present invention, the content of the compound is 3 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is 3 to 25% by mass in other embodiments, and in other embodiments, 3 to 10% by mass, and in other embodiments, 3 to 7 mass%, and in other embodiments, 5 to 10 mass%, and in other embodiments, 11 to 20 mass%, and then other implementations. The form is 14 to 18% by mass. Further, in other embodiments, it is 18 to 25% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is from 1 to 20% by mass in other embodiments, and is further carried out. The form is 1 to 13% by mass, and the other embodiment is 1 to 10% by mass, and the other embodiment is 1 to 7% by mass, and the other embodiment is 1 to 3% by mass.

Further, the compound represented by the formula (X-6) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (44.1) to the formula (44.4) is preferable, and the formula ( The compound represented by 44.1) and/or formula (44.2) is more preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (44.1) is 1% 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. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 3 mass% or more and 10 mass% or less are especially preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (44.2) is 1% 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. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 3 mass% or more and 10 mass% or less are especially preferable.

In the liquid crystal composition of the present invention, the total content of the compound represented by the formula (44.1) and the compound represented by the formula (44.2) is considered to be the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The total mass of the material is preferably 5% by mass or more and 45% by mass or less, more preferably 7% by mass or more and 25% by mass or less, and still more preferably 7% by mass or more and 20% by mass or less. In a particularly preferable range, for example, 7 mass% or more and 15 mass% or less, 7 mass% or more and 12 mass% or less, 7 mass% or more and 10 mass% or less, 10 mass% or more, 15 mass% or less, and 12 mass% or more are exemplified. Below mass%.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-7).

(wherein 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 it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (X-7) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is 4 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 5 to 30% by mass. In another embodiment, the content of the compound is 6 to 30% by mass, and in still another embodiment, the content of the compound is 8 to 30% by mass, and in still other embodiments, the content of the compound is 9 to 30% by mass. In still another embodiment, the content of the compound is 11 to 30% by mass, and in still another embodiment, the content of the compound is 14 to 30% by mass. In still another embodiment, the content of the compound is from 18 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 4 to 30% by mass based on the total mass, and in other embodiments, the content of the compound is 4 to 20% by mass, and further embodiments The content of the aforementioned compound is 4 to 13% by mass, and then In other embodiments, the content of the compound is 4 to 10% by mass, and in still other embodiments, the content of the compound is 4 to 7% by mass.

Further, the compound represented by the formula (X-7) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (44.11) to the formula (44.14) is preferable, and the formula ( 44.13) The compound represented is more preferred.

Further, the compound represented by the formula (M) is preferably a compound selected from the group represented by the formula (XI).

(wherein, X ¹¹¹ to X ¹¹⁷ are each independently represented by a fluorine atom or a hydrogen atom, at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹ represents an alkyl group having 1 to 5 carbon atoms and a carbon number of 2 to 5; An alkenyl group or an alkoxy group 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 preferable to combine one to three or more types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (XI) is an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 4 to 30% by mass. In other embodiments, the content of the compound is 5 to 30% by mass, and in still other embodiments, the content of the compound is 7 to 30% by mass, and in still other embodiments, the content of the compound is 9 to 30% by mass. In still another embodiment, the content of the compound is 10 to 30% by mass, and in still another embodiment, the content of the compound is 12 to 30% by mass. In still another embodiment, the content of the compound is from 13 to 30% by mass. In still another embodiment, the content of the compound is 15 to 30% by mass. In still another embodiment, the content of the compound is from 18 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 30% by mass based on the total mass, and in other embodiments, the content of the compound is 2 to 25% by mass, and further embodiments The content of the compound is 2 to 20% by mass, and in still other embodiments, the content of the compound is 2 to 15% by mass, and in still other embodiments, the content of the compound is 2 to 10% by mass, and further implementation is carried out. In the form, the content of the above compound is 2 to 5% by mass.

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

Further, the compound 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).

(wherein 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).

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 complex refractive index. For example, one embodiment of the present invention is one type, and two types in other embodiments, and three or more types in other embodiments.

The content of the compound represented by the formula (XI-1) is considered in view of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The total mass of the liquid crystal composition is preferably 1% by mass or more and 20% by mass or less, more preferably 3% by mass or more and 20% by mass or less, more preferably 4% by mass or more and 20% by mass or less, and even more preferably 5% by mass or more. The mass % or less is more preferably, and 7 mass% or more and 12 mass% or less are particularly preferable.

Further, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (45.1) to the formula (45.4) is preferable, and the formula ( 45.2) The compound represented by the formula (45.4) is preferred, and the compound represented by the formula (45.2) is more preferably contained.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.2) is 1% 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. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 3 mass% or more and 10 mass% or less are especially preferable. In a particularly good range, for example, 3% by mass can be cited 10 mass% or less, 3% by mass or more and 8% by mass or less, 3% by mass or more and 6% by mass or less, 3% by mass or more and 4% by mass or less, 4% by mass or more and 10% by mass or less, and 6% by mass or more and 10% by mass or less. 8% by mass or more and 10% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.3) is 1% 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 the like. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 3 mass% or more and 10 mass% or less are especially preferable. In a particularly preferable range, for example, it is 3% by mass or more and 10% by mass or less, 3% by mass or more and 8% by mass or less, 3% by mass or more and 6% by mass or less, 3% by mass or more and 4% by mass or less, and 4% by mass or more. It is 5% by mass or less, 6% by mass or more and 10% by mass or less, and 8% by mass or more and 10% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.4) is 1% 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 the like. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 3 mass% or more and 10 mass% or less are especially preferable.

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

(wherein 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 complex refractive index. For example, one embodiment of the present invention is one type, and two types in other embodiments, and three or more types in other embodiments.

The content of the compound represented by the formula (XI-2) is from 1% by mass to 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of the solubility at low temperature, the transfer temperature, electrical reliability, and the like. Preferably, it is more preferably 3 mass% or more and 20 mass% or less, more preferably 4 mass% or more and 20 mass% or less, more preferably 6 mass% or more and 15 mass% or less, and even more preferably 9 mass% or more and 12 mass% or less. .

Further, the compound represented by the formula (XI-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (45.11) to the formula (45.14) is preferable, and the formula ( 45.12) The compound represented by the formula (45.14) is preferred, and the compound represented by the formula (45.12) is more preferably contained.

Further, the compound represented by the formula (M) is preferably a compound represented by the formula (XII).

(wherein, X ¹²¹ to X ¹²⁶ are each independently represented by a fluorine atom or a hydrogen atom, and R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms. Oxy group, Y ¹² represents a fluorine atom or -OCF ₃ ).

The compound which can be combined is not particularly limited, but it is preferably one to three or more types in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to four 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).

(wherein 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 4 carbon atoms).

The compound to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

The content of the compound represented by the formula (XII-1) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 2% by mass or more and 10% by mass or less. More preferably, it is more preferably 3 mass% or more and 8 mass% or less, and more preferably 4 mass% or more and 6 mass% or less.

Further, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (46.1) to the formula (46.4) is preferable, and the formula ( 46.2) The compound represented by the formula (46.4) is more preferably.

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

(wherein 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 4 carbon atoms).

The compound to be combined is not particularly limited, and it is preferably one type to two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and more preferably one to three or more types.

The content of the compound represented by the formula (XII-2) is preferably 1% by mass or more and 20% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 3% by mass or more and 20% by mass or less. More preferably, it is more preferably 4% by mass or more and 17% by mass or less, more preferably 6% by mass or more and 15% by mass or less, and particularly preferably 9% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (47.1) to the formula (47.4) is preferable, and the formula ( 47.2) The compound represented by the formula (47.4) is more preferably.

Further, the compound represented by the formula (M) is preferably a compound represented by the following formula (XIII). Except for the compound represented by the formula (i).

(Wherein, X ¹³¹ to X ¹³⁵ each independently represent a hydrogen atom or a fluorine atom, R ¹³ represents an alkyl group having 1 to 5 carbon atoms, the carbon atoms of the alkenyl group having 2 to 5 carbon atoms or alkoxy of 1 to 4 Oxy group, 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 the compounds containing these compounds are preferable, and one type to three types are more preferable, and one type to four types are more preferable.

The content of the compound represented by the formula (XIII) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 4 to 30% by mass. In other embodiments, the content of the compound is 5 to 30% by mass, and in still other embodiments, the content of the compound is 7 to 30% by mass, and in still other embodiments, the content of the compound is 9 to 30% by mass. %, in still another embodiment, the content of the above compound is 11 to 30% by mass, and in other embodiments, the content of the aforementioned compound It is 13 to 30% by mass. In still another embodiment, the content of the compound is 14 to 30% by mass. In still another embodiment, the content of the compound is from 16 to 30% by mass. In still another embodiment, the content of the compound is from 20 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 30% by mass based on the total mass, and in other embodiments, the content of the compound is 2 to 25% by mass, and further embodiments The content of the compound is 2 to 20% by mass, and in still other embodiments, the content of the compound is 2 to 15% by mass, and in still other embodiments, the content of the compound is 2 to 10% by mass, and further implementation is carried out. In the form, the content of the above compound is 2 to 5% by mass.

Further, in the case where the liquid crystal composition of the present invention is used for a liquid crystal display device having a small cell gap, it is preferred to form a plurality of compounds represented by the formula (XIII).

Moreover, in the case of using a liquid crystal display element having a small driving voltage, it is also suitable to use a compound having a content represented by the general formula (XIII).

Moreover, in the case of a liquid crystal display element used for a low-temperature environment, it is suitable to make the content of the compound represented by the general formula (XIII) small.

In the case of a liquid crystal composition for a liquid crystal display element having a high reaction rate, it is suitable to make the content of the compound represented by the general formula (XIII) small.

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

(wherein R ¹³ 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 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 more preferably 3% by mass or more and 25% by mass or less. It is more preferably 5 mass% or more and 20 mass% or less, and more preferably 10 mass% or more and 15 mass% or less.

Further, the compound represented by the formula (XIII-1) is preferably a compound represented by the formula (48.1) to the formula (48.4), and a compound represented by the formula (48.2) is preferred.

Further, the compound represented by the formula (M) is preferably a compound selected from the group of compounds represented by the formula (XIV). Except for the compound represented by the formula (i).

(wherein R ¹⁴ 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 as a fluorine atom or a hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF _3, Q ¹⁴ represents a single bond, -COO- or -CF ₂ O-, m ¹⁴ is 0 or 1).

The type of the compound that can be combined is not limited, but it can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, in another embodiment of the present invention, there are two types. Alternatively, still another embodiment of the present invention is three types. Further, in still another embodiment of the present invention, there are four types. Alternatively, still another embodiment of the present invention is five types. Alternatively, in still another embodiment of the present invention, it is six or more types.

The content of the compound represented by the formula (XIV) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is from 7 to 40% by mass. In another embodiment, the content of the compound is 8 to 40% by mass, and in still another embodiment, the content of the compound is 11 to 40% by mass, and in still other embodiments, the content of the compound is Further, in another embodiment, the content of the compound is 16 to 40% by mass, and in still another embodiment, the content of the compound is 18 to 40% by mass. In still another embodiment, the content of the compound is from 19 to 40% by mass. In still another embodiment, the content of the compound is from 22 to 40% by mass. In still another embodiment, the content of the compound is from 25 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is from 3 to 35% by mass, and in still other embodiments The content of the compound is 3 to 30% by mass, and in still other embodiments, the content of the compound is 3 to 25% by mass, and in still other embodiments, the content of the compound is 3 to 20% by mass, and further implementation is carried out. In the form, the content of the above compound is from 3 to 15% by 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 compound having a content represented by the general formula (XIV). Further, in the case of using a liquid crystal composition of a liquid crystal display element having a high reaction rate, it is suitable to make the content of the compound represented by the general formula (XIV) small.

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

(wherein R ¹⁴ 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, a chlorine atom or -OCF ₃ ).

The type of the compound that 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, and complex refractive index.

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

(wherein R ¹⁴ 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 formula (XIV-1-1) is preferably 2% by mass or more, more preferably 3% by mass or more, and 7 parts by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. More than % is better, 10% by mass or more is better, and 18% by mass or more is particularly good. Further, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like, the maximum ratio is preferably 30% by mass or less, more preferably 27% by mass or less, more preferably 24% by mass or less, and even less than 21% by mass. Very good.

Further, the compound represented by the formula (XIV-1-1), specifically, the compound represented by the formula (51.1) to the formula (51.4) is preferable, and the compound represented by the formula (51.1) is more preferable. .

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

(wherein R ¹⁴ 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 formula (XIV-1-2) is preferably 1% by mass or more and 15% by mass or less, and preferably 3% by mass or more and 13% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The following is more preferable, and it is more preferably 5 mass% or more and 11 mass% or less, and more preferably 7 mass% or more and 9 mass% or less.

Further, the compound represented by the formula (XIV-1-2), specifically, the compound represented by the formula (52.1) to the formula (52.4) is preferable, wherein the compound represented by the formula (52.4) is Better.

Further, the compound represented by the general formula (XIV) is a general formula The compound represented by (XIV-2) is preferred. Except for the compounds indicated in (i).

(wherein R ¹⁴ 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 ¹⁴¹ to X ¹⁴⁴ are each independently represented as a fluorine atom or a hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom, or -OCF _3).

The type of the compound that can be combined is not limited, but it can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, in another embodiment of the present invention, there are two types. Alternatively, still another embodiment of the present invention is three types. Further, in still another embodiment of the present invention, there are four types. Alternatively, in still another embodiment of the present invention, it is five or more types.

The content of the compound represented by the formula (XIV-2) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is from 7 to 40% by mass. In another embodiment, the content of the compound is 8 to 40% by mass, and in still another embodiment, the content of the compound is 10 to 40% by mass, and in still other embodiments, the content of the compound is 11 to 40% by mass, and in still another embodiment, the content of the compound is 12 to 40% by mass, and in still another embodiment, the content of the compound is 18 to 40% by mass. In still another embodiment, the content of the compound is from 19 to 40% by mass. In still another embodiment, the content of the compound is from 21 to 40% by mass. In still another embodiment, the content of the compound is from 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is from 3 to 35% by mass, and in still other embodiments The content of the compound is 3 to 25% by mass, and in still other embodiments, the content of the compound is 3 to 20% by mass, and in still other embodiments, the content of the compound is 3 to 15% by mass, and further implementation is carried out. In the form, the content of the above compound is from 3 to 10% by 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 provide a plurality of compounds represented by the general formula (XIV-2). Further, in the case of using a liquid crystal composition of a liquid crystal display element having a high reaction rate, it is suitable to make the content of the compound represented by the general formula (XIV-2) small.

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

(wherein R ¹⁴ 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 formula (XIV-2-1) relative to the present invention The total amount of the liquid crystal composition is 100% by mass, preferably 1% by mass or more and 15% by mass or less, more preferably 3% by mass or more and 13% by mass or less, more preferably 5% by mass or more and 11% by mass or less, and 7 mass%. More than 9% by mass or less is particularly preferable.

Further, the compound represented by the formula (XIV-2-1), specifically, the compound represented by the formula (53.1) to the formula (53.4) is preferable, wherein the compound represented by the formula (53.4) is Better.

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

(wherein R ¹⁴ 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 formula (XIV-2-2) is preferably 3% by mass or more and 20% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and is preferably 6% by mass or more and 17% by mass or less. The following is more preferable, and it is more preferably 9 mass% or more and 15 mass% or less, more preferably 10 mass% or more and 14 mass% or less, and more preferably 10 mass% or more and 12 mass% or less.

Further, the compound represented by the formula (XIV-2-2), specific In the case of the compound represented by the formula (54.1) to the formula (54.4), a compound represented by the formula (54.2) and/or the formula (54.4) is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (54.2) is preferably 5% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 5% by mass and 25% by mass. The amount is more preferably 5% by mass or more and 22% by mass or less, more preferably 8% by mass or more and 20% by mass or less, more preferably 10% by mass or more and 17% by mass or less, and more preferably 10% by mass or more and 15% by mass or less. More preferably, 10% by mass or more and 12% by mass or less are particularly preferable.

Further, in the liquid crystal composition of the present invention, the content of the compound represented by the formula (54.4) is preferably 4% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 55% by mass or less. The mass% or less is more preferably 5 mass% or more and 22 mass% or less.

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

(wherein R ¹⁴ 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 formula (XIV-2-3) is preferably 5% by mass or more and 30% by mass or less, and 9% by mass or more and 27% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The following is more preferable, and 12% by mass or more and 24% by mass or less are more preferable, and 12% by mass or more and 20% by mass or less are particularly preferable.

Further, the compound represented by the formula (XIV-2-3), specifically, the compound represented by the formula (55.1) to the formula (55.4) is preferable, and the formula (55.2) and/or the formula ( 55.4) The compound represented is more preferred.

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

(wherein R ¹⁴ 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 appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, in another embodiment of the present invention, there are two types. Alternatively, in still another embodiment of the present invention, it is three or more types.

The content of the compound represented by the formula (XIV-2-4) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

For example, in one embodiment of the present invention, the content of the compound is 2 to 35 mass% based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 5 to 35 mass%. In still another embodiment, the content of the compound is 8 to 35 mass%, and in still another embodiment, the content of the compound is 9 to 35 mass%, and in still other embodiments, the content of the compound is 10 to 35 mass. In still another embodiment, the content of the compound is 18 to 35% by mass, and in still another embodiment, the content of the compound is 21 to 35% by mass. In still another embodiment, the content of the compound is 22 to 35% by mass. In still another embodiment, the content of the compound is from 24 to 35% by mass.

Also, for example, with respect to the aforementioned total mass, in the present invention In one embodiment, the content of the compound is 2 to 35% by mass, and in other embodiments, the content of the compound is 2 to 30% by mass, and in other embodiments, the content of the compound is 2 to 25% by mass, and further In another embodiment, the content of the compound is 2 to 20% by mass, and in still other embodiments, the content of the compound is 2 to 15% by mass, and in still other embodiments, the content of the compound is 2 to 10% by 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 general 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 suitable to make the content of the compound represented by the general formula (XIV-2-4) small.

Further, the compound represented by the formula (XIV-2-4), specifically, the compound represented by the formula (56.1) to the formula (56.4) is preferable, and the formula (56.1) and the formula (56.2) are contained therein. Further, the compound represented by the formula (56.4) is more preferable.

The compound used in the invention of the present invention does not have a peracid (-CO-OO-) structure in the molecule. Further, in the case where the reliability and long-term stability of the liquid crystal composition are emphasized, it is preferred not to use a compound having a carbonyl group. Further, in the case where the stability of UV irradiation is emphasized, a compound which does not use a chlorine atom is desired. It is also preferred that the ring structure in the molecule is a compound having only 6 members of the ring.

The liquid crystal composition of the present invention does not contain a compound having a structure in which oxygen atoms such as a peracid (-CO-OO-) structure in the molecule are bonded to each other.

When the reliability of the liquid crystal composition and long-term stability are emphasized, the content of the compound having a carbonyl group is preferably 5% by mass or less, more preferably 3% by mass or less, and more preferably 1% by mass or less based on the total mass of the composition. For better, it is not optimal for those who do not.

When the stability of the UV irradiation is emphasized, the content of the chlorine atom-substituted compound is preferably 15% by mass or less, more preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total mass of the composition. Good, essentially not included as the best.

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

In order to suppress deterioration due to oxidation of the liquid crystal composition, the content of the compound having a cyclohexene structure in a ring structure is made small. The content of the compound having a cyclohexene group is preferably 10% by mass or less, more preferably 5% by mass or less, and most preferably not contained, based on the total mass of the composition.

In view of the improvement of the viscosity and the improvement of the Tni, it is preferable to make the content of the compound having a 2-methylbenzene-1,4-diyl group in which a hydrogen atom can be substituted with a halogen, with respect to the above composition. The content of the compound having a 2-methylbenzene-1,4-diyl group in the molecule is preferably 10% by mass or less, more preferably 5% by mass or less, and substantially not more. good.

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 2 to 5 Preferably, in the case where the above alkenyl group is bonded to benzene, 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.

The liquid crystal display device of the present invention may contain a polymerizable compound in order to produce a liquid crystal display device such as a PS mode, a lateral electric field type PSA mode or a lateral electric field type PSVA mode. The polymerizable compound which can be used for the polymerization is a photopolymerizable monomer which is polymerized by an energy ray such as light, and examples of the structure include a biphenyl derivative and a triphenyl derivative. 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.

(wherein, 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, the oxygen atom bonded to an aromatic ring), 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 are each independently represented as 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 substituted by a fluorine atom.

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 each independently represent a single bond, an alkylene group having a carbon number of 1 to 8 or -O- (CH _{2) s} -, but in the PSA display element, at least one of a single bond are preferred, The compound which represents a single bond or one of which is a single bond and the other is an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - is preferred. In this case, an alkyl group of 1 to 4 is preferred, and an s 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. C represents a ring structure other than a single bond, and a linking group other than the Z ²⁰¹ single bond is preferable, and M ²⁰¹ is a single bond, and a Z ²⁰¹ single bond is preferable.

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

In the general 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) are preferred, and the formula (XXa-1) is represented. The formula (XXa-3) is more preferable, and the formula (XXa-1) is particularly preferable.

(In the formula, both ends are made to be 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 since a good alignment state is obtained, display unevenness is suppressed or does not occur at all.

From the above, as the polymerizable monomer, the formula (XX-1) to the formula (XX-4) are particularly preferable, and the formula (XX-2) is most preferable.

(wherein, 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).

(wherein 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 such that the oxygen atoms are not directly adjacent to each other. Substituted by -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, M ^Q represents trans-1,4 - a cyclohexyl group, a 1,4-phenylene group 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 subjected to -O- in a manner in which 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 10 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 are substituted with - a branched alkyl group of OCO- or -COO- is preferred, a linear alkyl group having 1 to 20 carbon atoms, a CH ₂ group having ₁ group substituted with a linear alkyl group of -OCO- or -COO-, branched chain alkyl group, branched alkoxy group, one of the CH ₂ group is substituted branched chain alkyl group is more preferably -COO-, or -OCO-. 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 formula (Q), more specifically, a compound represented by the following formula (Q-a) to formula (Q-d) is preferred.

In the 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 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 chain having 1 to 8 carbon atoms. An alkyl group or a branched alkyl group is preferred. Among the compounds represented by the formula (Qa) to the formula (Qd), a compound represented by the formula (Qc) and the formula (Qd) is more preferable.

In the liquid crystal composition of the present invention, one or two kinds of compounds represented by the formula (Q) are preferred, and one to five kinds are more preferably contained, and the content is preferably from 0.001 to 1% by mass. More preferably, it is 0.001 to 0.1% by mass, and particularly preferably 0.001 to 0.05% by mass.

<Liquid crystal display element>

The liquid crystal display device containing the polymerizable compound of the present invention is a liquid crystal display device in which the polymerizable compound contained in the polymerized polymer is polymerized by ultraviolet irradiation to impart liquid crystal alignment ability, and the amount of transmitted light is controlled by birefringence of the liquid crystal composition. in use. Useful for liquid crystal display elements EAM-LCD (active matrix liquid crystal display element), TN (nematic liquid crystal display element), STN-LCD (super twisted nematic liquid crystal display element), OCB-LCD and IPS-LCD (planar conversion liquid crystal display element) However, it is particularly useful for AM-LCDs and can be used for transmissive or reflective liquid crystal display elements.

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.

The color filter can be produced, for example, by a pigment dispersion method, a printing method, an electrodeposition method, a dyeing method, or the like. A method of producing a color filter by a pigment dispersion method will be described as an example. A curable coloring composition for a color filter is applied onto the transparent substrate, and a pattern forming process is performed, and heating or light irradiation is performed. And make it hard. 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. Moreover, in the case of two polarizing plates, the polarizing axis of each polarizing plate can be adjusted to make the viewing angle or contrast a good way. Adjustment. 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, the vacuum injection method does not cause a dripping mark, but there is a problem that the injected trace remains. 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, an epoxy-based photothermal heat-sealing sealant is used in a substrate of either a backplane or a frontplane, and is closed by using a dispenser. The circuit is depicted in a soil-like manner in which a liquid crystal display element is produced by dropping a predetermined amount of the liquid crystal composition under degassing by joining 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 the two substrates, at least the substrate on the irradiation surface side must have appropriate transparency with respect to the active energy ray. In addition, when the light is irradiated, the mask is used to polymerize only a specific portion. Then, by changing the conditions of the electric field, the magnetic field, or the temperature, the alignment state of the unpolymerized portion is changed, and a means for irradiating the active energy ray to cause polymerization can be further used. 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 ultraviolet rays in the wavelength range of the absorption wavelength range of the non-liquid crystal composition, and it is preferable to use ultraviolet rays when necessary. 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.

Liquid crystal display element system using the liquid crystal composition of the present invention It is useful for suppressing both high-speed reaction and display failure. In particular, it is used for active matrix drive liquid crystal display elements, and can be applied to VA mode, VA-IPS, PSVA mode, PSA mode, IPS (in-plane switching (in- Plane switching)) A liquid crystal display element for mode, FSS (fringe field switching) mode or 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 alignment film 105 are provided thereon. The second substrate 200 is provided with a black matrix 202, a color filter 203, a planarization film (overcoat layer) 201, a transparent electrode 204, and a second alignment film 205 is disposed thereon. a front plate facing the backing plate, a sealing member 301 disposed between the substrates, and a liquid crystal layer 303 sealed in a sealing region surrounded by the sealing member, and provided on a substrate surface adjacent to the sealing member 301 Protrusions (columnar spacers) 302, 304.

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. Polyester such as ethylene glycol; polyolefin, polypropylene, polyethylene, etc., polyvinyl alcohol, Polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyamidamine, polystyrene, polyacrylate, polymethyl methacrylate, polyether oxime, polyarylate compound Further, an inorganic-organic composite material such as glass fiber-epoxy resin, glass fiber-acrylic resin, or the like can be used.

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. Generally, inorganic materials such as cerium oxide are used by evaporation 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. 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 the usual array steps. 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. The polymer film formed as described above is rubbed in one direction by using a flat-grinding cloth made of fibers such as enamel, and liquid crystal alignment ability is generated.

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.

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

The black matrix 202 is produced, for example, by 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, a photoresist type pigment dispersion liquid is applied, and after prebaking, it is exposed by a mask pattern, and then developed to form a 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 by sputtering to form ITO or the like. Oxide film.

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 not particularly limited, and the horizontal cross section may be formed into various shapes such as a circular shape, a square shape, or the like, but the horizontal cross section is rounded in consideration of a misaligned margin during the process. Or positive polygons are particularly good. 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.

Coating a columnar spacer on the transparent electrode 204 of the front plate Used (without colorant) resin solution. 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 was peeled off, and the resin layer was baked to complete the columnar spacer (302, 0304 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 special Limited, spherical, fibrous, amorphous, and 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. The sealing material application position is usually formed 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 a manner in which the liquid crystal does not leak), the sealing material coating shape is formed into a closed loop shape.

The liquid crystal is dropped into the closed circuit 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 or 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. Positioned in a position where the sealing material is not adjacent to the other substrate Set (distance). 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 system is filled with an inert gas, and the pressure is gradually released while returning to 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 increase 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, "% by mass" in the compositions 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: complex refractive index)

△ ε: dielectric anisotropy in 298K

η: viscosity in 293K (mPa.s)

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

Afterimage:

The image sticking evaluation of the liquid crystal display element was performed by visually performing the following four-stage evaluation by displaying the predetermined fixed pattern for 40 days in the display area and performing the full-screen uniform display.

◎: no residual image

○: Only a few residual images are acceptable.

△: There is residual image and it is unacceptable

×: There is residual image and it is very poor

Volatile/manufacturing device contamination:

Evaluation of Volatile liquid crystal material, specifically dedicated to the container of 0.2L capacity vacuum degassing mixer was stirred in the liquid crystal composition placed 0.06kg,, 8.0S ^-1 to the rotation speed of revolution speed 16S ^-1, while The vacuum stirring defoaming mixer was operated, and while degassing to 15 kPa, the foaming of the liquid crystal material was visually observed, and the time from the start of the operation of the mixer to the start of foaming was measured. The degree of evaluation is the following four stages.

◎: The foaming time was 150 seconds or more. The possibility of contaminating the device via volatilization is low.

○: The foaming time was 75 seconds or more and less than 150 seconds. There are doubts about the slight contamination of the device via volatilization.

△: The foaming time was 15 seconds or more and less than 75 seconds. Contamination of the device via volatilization can occur.

×: The foaming is within 15 seconds. There are doubts about volatile and potentially polluting devices.

Process suitability:

Process suitability is based on the ODF process. Using a fixed metering pump, add 60pL of liquid crystal per drop and perform 100,000 times, followed by "0~100 times, 101~200 times, 201~300 times, .... The change in the amount of liquid crystal at the time of 100 times of each of 99,901 to 100,000 times was evaluated in the following four stages.

◎: The change is extremely small (the liquid crystal display element can be stably produced)

○: Only a few changes are acceptable

△: There is a change and it is unacceptable (the yield is deteriorated due to the occurrence of spots)

×: There is a change and very poor (liquid crystal leakage or vacuum bubble generation)

Low temperature solubility:

After modulating the liquid crystal composition, 0.9 g of the liquid crystal composition was weighed in a 2 mL sample vial in a temperature-controlled test cell, followed by one cycle of "-20 ° C (for 1 hour) → temperature increase (0.2 ° C / min) )→10°C (for 1 hour)→temperature (0.2°C/min)→30°C (for 1 hour)→cooling (-0.2°C/min)→10°C (for 1 hour)→cooling (-0.2°C) The temperature change of /50 ° C" was observed, and the occurrence of precipitates of the liquid crystal composition was visually observed, and the solubility evaluation at low temperature was carried out by the following four-stage evaluation.

◎: No precipitate was observed for 500 hours or more.

○: No precipitate was observed for 250 hours or longer.

△: Precipitates were observed within 120 hours.

×: Precipitates were observed within 60 hours.

Examples 1 to 9 and Comparative Examples 1 to 3

The liquid crystal composition having the compositions shown in the following Tables 1 to 6 was adjusted. The physical property values of the obtained liquid crystal compositions are shown in Tables 7 to 9.

As shown in Table 7, the liquid crystal composition of Comparative Example 1 was substituted for the compound represented by the general formula (ii) with a structure similar to that of Example 1. A compound represented by the formula (18.2) and (18.4). The liquid crystal composition of Comparative Example 1 has the same Δn, and although Δε is increased, Tni is lowered, and the viscosity (η, γ1) is greatly increased.

With respect to Example 1, the liquid crystal composition of Comparative Example 2 had the same values as Δn and Δε except for the compound represented by the formula (ii) and the liquid crystal composition of Example 1. The viscosity (η, γ1, especially γ1) increases dramatically.

With respect to Example 1, the liquid crystal composition of Comparative Example 3 was substituted with a compound represented by the formula (i) into a compound having a positive value of Δε of four identical ring structures. The Tni is greatly reduced, and the viscosity (η, γ1, especially γ1) is greatly increased.

Further, as shown in Tables 8 and 9, in the liquid crystal compositions of Examples 2 to 9, the VHR after heating was reduced to be small, and the afterimage, volatility, process suitability, and low-temperature solubility were observed. The evaluation gave good results.

Claims (9)

A liquid crystal composition containing at least three compounds represented by the following formula (i), at least one compound represented by the following formula (ii), and at least one compound of the following formula (L) The compound represented by the following formula (M), wherein the compound represented by the following formula (i) contains at least a compound represented by the following formula (37.2), and The compound represented by the formula (L) contains at least a compound represented by the following formula (I-1), and contains 10% by mass or more and 25% by mass or less of the following formula with respect to the total mass of the liquid crystal composition ( i) the compound represented by the following formula (ii) is contained in an amount of 3% by mass or more and 25 parts by mass or less based on the total mass of the liquid crystal composition. (In the formulae (i) and (ii), R ⁱ¹ , R ⁱⁱ¹ and R ⁱⁱ² are each independently represented by an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms. group, but one of the non-adjacent alkyl group, an alkenyl group and an alkoxy group of two or more of -CH ₂ - may each independently be -CH = CH -, - C≡C - , - O -, - CO-, -COO- or -OCO-substituted, the hydrogen atom in the alkyl group, the alkenyl group and the alkoxy group may be substituted by a fluorine atom or a chlorine atom, n ⁱ¹ represents 1 or 2, and X ⁱ¹ represents a hydrogen atom or a fluorine atom. , A ⁱ¹ represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom, and A ⁱ¹ may be plural, and they may be the same or For the difference, Z ⁱ¹ represents a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO- , -OCO-, -C≡C-, Z ⁱ¹ exist in a plurality of cases, they may be the same or may be different; in the formula (L), R ^L1 and R ^L2 are each independently represented as a carbon number of 1 ~8 of the alkyl group, one of the alkyl groups or two or more non-contiguous -CH ₂ - 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 as a group selected from the group consisting of: (a) 1,4-cyclohexylene (one of -CH ₂ - present in the group or two or more not adjacent) CH ₂ - may be substituted with -O-); and (b) 1,4-phenylene (one of -CH= or non-contiguous two-CH= present in this group may be substituted -N=), the hydrogen atoms in the above-mentioned groups (a) and (b) may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 are each independently represented as 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 has a plurality of cases. They may be the same or different, OL is 2 or 3 and B ^{L3 is} stored. In the case of a plurality of cases, they may be the same or different, except for the compound represented by the formula (ii); in the formula (M), R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and the alkyl group One or more of the two or more non-contiguous -CH ₂ - may be independently substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, PM Representing 0, 1, 2, 3 or 4, C ^M1 and C ^M2 are each independently represented as being selected from the following components Group group: (d) 1,4- cyclohexylene (this group present in one of the -CH ₂ - or of two or more adjacent -CH ₂ - may be substituted with -O- or -S -); and (e) 1,4-phenylene (one of the CH- or the two or more non-adjacent -CH= may be substituted by -N=), the above-mentioned group ( d), the hydrogen atom in the group (e) may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 are each independently represented as 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} present In the case of a plurality of cases, they may be the same or different, PM is 2, 3 or 4 and C ^M2 has a plurality of cases, and they may be the same or different, and X ^M1 and X ^M3 are each independently represented as hydrogen. An 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, but, except for the compound represented by the general formula (I); in the formula (I-1), R ¹¹ and R ¹² each independently represent carbon atoms of an alkyl group having 1 to 5 carbon atoms, 1 ~5 alkoxy or carbon number 2~5 alkenyl). The liquid crystal composition of claim 1, wherein Z ⁱ¹ in the formula (i) is a single bond. The liquid crystal composition of claim 1, wherein A ⁱ¹ in the formula (i) is a trans-1,4-cyclohexylene group. The liquid crystal composition according to any one of claims 1 to 3, wherein n ⁱ¹ in the formula (i) is 2. The liquid crystal composition of any one of Claims 1 to 3, wherein the compound represented by the formula (L) further contains a compound represented by the following formula (I-1-1). (wherein R ^{12 is} each independently represented by 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). The liquid crystal composition of any one of Claims 1 to 3, wherein the compound represented by the formula (L) further contains 14% by mass or more of the compound represented by the following formula (1.3). A liquid crystal display element using the liquid crystal composition of the first aspect of the patent application. A liquid crystal display element for an IPS mode, an OCB mode, an ECB mode, a VA mode, a VA-IPS mode or an FFS mode, which is characterized in that a liquid crystal composition as in the first aspect of the patent application is used. A liquid crystal display characterized by using a liquid crystal display element as in claim 7 or 8.