WO2015098661A1 - 液晶組成物用酸化防止剤、液晶組成物及びこれを用いた液晶表示素子 - Google Patents
液晶組成物用酸化防止剤、液晶組成物及びこれを用いた液晶表示素子 Download PDFInfo
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- WO2015098661A1 WO2015098661A1 PCT/JP2014/083446 JP2014083446W WO2015098661A1 WO 2015098661 A1 WO2015098661 A1 WO 2015098661A1 JP 2014083446 W JP2014083446 W JP 2014083446W WO 2015098661 A1 WO2015098661 A1 WO 2015098661A1
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- C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
- C09K15/06—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing oxygen
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- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/15—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with all hydroxy groups on non-condensed rings, e.g. phenylphenol
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
- C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
- C09K19/2021—Compounds containing at least one asymmetric carbon atom
- C09K19/2028—Compounds containing at least one asymmetric carbon atom containing additionally a linking group other than -COO- or -OCO-, e.g. -CH2-CH2-, -CH=CH-, -C=C-; containing at least one additional carbon atom in the chain containing -COO- or -OCO- groups, e.g. -COO-CH*-CH3
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/32—Non-steroidal liquid crystal compounds containing condensed ring systems, i.e. fused, bridged or spiro ring systems
- C09K19/322—Compounds containing a naphthalene ring or a completely or partially hydrogenated naphthalene ring
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- C09K19/542—Macromolecular compounds
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
- C09K2019/0448—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate
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- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
- C09K2019/0466—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the linking chain being a -CF2O- chain
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- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/542—Macromolecular compounds
- C09K2019/548—Macromolecular compounds stabilizing the alignment; Polymer stabilized alignment
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- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
- G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
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- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
- G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
Definitions
- the present invention relates to an antioxidant for a liquid crystal composition useful as a liquid crystal display material, a nematic liquid crystal composition exhibiting a positive dielectric anisotropy ( ⁇ ), and a liquid crystal display element using the same.
- Liquid crystal display elements are used in various measuring instruments, automobile panels, word processors, electronic notebooks, printers, computers, televisions, watches, advertisement display boards, etc., including clocks and calculators.
- Typical liquid crystal display methods include TN (twisted nematic) type, STN (super twisted nematic) type, vertical alignment type using TFT (thin film transistor), and IPS (in-plane switching) type.
- TN twisted nematic
- STN super twisted nematic
- IPS in-plane switching
- horizontal orientation types such as FFS (fringe field switching) type.
- the liquid crystal composition used in these liquid crystal display elements is stable against external stimuli such as moisture, air, heat, light, etc., and exhibits a liquid crystal phase in the widest possible temperature range centering on room temperature. And a low driving voltage is required.
- the liquid crystal composition is composed of several to several tens of kinds of compounds in order to optimize the dielectric anisotropy ( ⁇ ) or the refr
- a liquid crystal composition having a negative ⁇ is used, and in a horizontal alignment type display such as a TN type, STN type, or IPS (in-plane switching) type, a liquid crystal composition having a positive ⁇ . Is used.
- a driving method has been reported in which a liquid crystal composition having a positive ⁇ is vertically aligned when no voltage is applied and a horizontal electric field is applied to display the liquid crystal composition, and the necessity of a liquid crystal composition having a positive ⁇ is further increased. Yes.
- low voltage driving, high-speed response, and a wide operating temperature range are required in all driving systems.
- ⁇ is positive, the absolute value is large, the viscosity ( ⁇ ) is small, and a high nematic phase-isotropic liquid phase transition temperature (Tni) is required.
- Tni nematic phase-isotropic liquid phase transition temperature
- Examples of the structure of the liquid crystal composition aimed at high-speed response include, for example, a compound represented by the formula (A-1) or (A-2) in which ⁇ is a positive liquid crystal compound, and a liquid crystal compound in which ⁇ is neutral.
- a liquid crystal composition using a combination of (B) is disclosed.
- the characteristics of these liquid crystal compositions are widely known in the field of liquid crystal compositions that a liquid crystal compound having a positive ⁇ has a —CF 2 O— structure and that a liquid crystal compound having a negative ⁇ has an alkenyl group. It has been. (Patent Documents 1 to 4)
- Patent Document 5 it is intended to prevent a decrease in specific resistance due to heating in the atmosphere and to maintain a large voltage holding ratio in the vicinity of the upper limit temperature of the nematic phase after a long-time operation of the liquid crystal display element
- an antioxidant is mixed in the liquid crystal composition.
- the liquid crystal compositions of Patent Documents 1 to 5 have a high upper limit temperature of the nematic phase, a lower lower limit temperature of the nematic phase, a small viscosity, a large optical anisotropy, a large dielectric anisotropy, a large specific resistance, and a high stability to ultraviolet light. And at least one characteristic such as high stability against heat.
- liquid crystal display elements such as VA type and IPS type have been widely used, and super large size display elements having a size of 50 or more have come into practical use.
- the drop injection (ODF: One Drop Fill) method has become the main injection method from the conventional vacuum injection method. The problem that the drop marks when the liquid crystal composition is dropped on the substrate causes the display quality to deteriorate is brought to the surface.
- the liquid crystal composition used for the active matrix drive liquid crystal display element driven by a TFT element or the like while maintaining the characteristics and performance required for a liquid crystal display element such as high-speed response performance, In addition to the characteristics of having a high specific resistance value or high voltage holding ratio, which are emphasized, and being stable against external stimuli such as light and heat, development in consideration of the manufacturing method of liquid crystal display elements has been required. ing. Therefore, the antioxidant added to such a liquid crystal composition is also required to maintain the characteristics of the liquid crystal composition.
- the ionic impurities derived from the antioxidant present in the liquid crystal layer of the liquid crystal display element not only cause a decrease in the voltage holding ratio, but also the ionic impurities along the electric field formed in the liquid crystal layer. Due to the planar movement, there is a new problem that ionic impurities derived from the antioxidant are accumulated in a specific portion (hot spot) such as the vicinity of the electrode, and this accumulated region is visually recognized as a (line) afterimage from the outside. It has been confirmed that this occurs.
- the present invention solves such problems and is an antioxidant used in a liquid crystal composition having a positive dielectric anisotropy ( ⁇ ), has a liquid crystal phase in a wide temperature range, has a low viscosity
- An object of the present invention is to provide an antioxidant having good solubility at low temperature, high specific resistance and voltage holding ratio, or maintaining the characteristics of a liquid crystal composition stable against heat and light, and a liquid crystal composition containing the same.
- a liquid crystal display element such as a TN type, an IPS type, or an FFS type, which has excellent display quality and hardly causes display defects such as image sticking and dropping marks, is provided with a high yield.
- the present inventor has studied various liquid crystal compounds and various chemical substances, found that the above problems can be solved, and completed the present invention.
- M y is one or two or more -CH 2 in the hydrocarbon (hydrocarbon of 1 to 25 carbon atoms - so as not to directly adjacent is an oxygen atom, -O -, - CO- , -COO-, or -OCO- may be substituted.)
- the antioxidant for a liquid crystal composition according to the present invention can maintain the solubility of the entire liquid crystal composition at a low temperature even when mixed with a liquid crystal compound.
- the liquid crystal composition according to the present invention can obtain a very low viscosity or rotational viscosity, good solubility at low temperature, high specific resistance and high voltage holding ratio, and very little change due to heat and light,
- the practicality of the product is high, and a liquid crystal display element such as a TN type or an IPS type using the product can achieve a high-speed response, and display defects such as a drop mark and a line afterimage are suppressed, which is very useful.
- FIG. 1 is a diagram schematically showing a configuration of a liquid crystal display element according to the present invention.
- FIG. 2 is an enlarged plan view of the region II of the electrode layer including the thin film transistor formed on the substrate in FIG.
- FIG. 3 is a cross-sectional view of the liquid crystal display element shown in FIG. 1 cut along the line III-III in FIG.
- the first of the present invention is an antioxidant for a liquid crystal composition used for a liquid crystal composition containing 3% or more of one or more liquid crystal compounds having a positive dielectric anisotropy having an absolute value of 4 or more, Formula (II-1)
- M y is one or two or more -CH 2 in the hydrocarbon (hydrocarbon of 1 to 25 carbon atoms - so as not to directly adjacent is an oxygen atom, -O -, - CO- , -COO-, or -OCO- may be substituted.)
- X y may be the same as or different from each other, and an alkylene group having 1 to 15 carbon atoms (one or more —CH 2 — in the alkylene group is It may be substituted with —O—, —CO—, —COO— or —OCO— so that the oxygen atom is not directly adjacent to each other.), —OCH 2 —, —CH 2 O—, —COO—, — OCO -, - CF 2 O - , - OCF 2 -, - CF 2 CF 2 - —CH ⁇ CH—COO—, —CH ⁇ CH—OCO—, —COO—CH ⁇ CH—, —OCO—CH ⁇ CH—, —CH ⁇ CH—, —C ⁇ C—, single bond, 1,4 -Represents a phenylene group or a trans-1,4-cyclohexylene group.
- an arbitrary hydrogen atom may be substituted with a fluoridel, —CH
- the antioxidant according to the present invention can maintain the solubility of the entire liquid crystal composition at a low temperature even when mixed with a liquid crystal compound.
- M y is one of the hydrocarbon (hydrocarbon of 1 to 25 carbon atoms or two or more -CH 2 -, as the oxygen atoms are not directly adjacent , —O—, —CO—, —COO—, —OCO— may be substituted.), 1,4-phenylene group, trans-1,4-cyclohexylene group, 1,4-phenylene In the group, any hydrogen atom may be substituted by a fluorine atom, X y may be the same or different from each other, and an alkylene group having 1 to 15 carbon atoms (one or two in the alkylene group) Two or more —CH 2 — may be substituted with —O—, —CO—, —COO— or —OCO— so that the oxygen atom is not directly adjacent to each other)), —OCH 2 —, —CH 2 O—, —COO—, —OCO—, —CF 2 O—,
- M y is one of the hydrocarbon (hydrocarbon having 1 to 10 carbon atoms or two or more -CH 2 -, as the oxygen atoms are not directly adjacent , -O-, -CO-, -COO-, and -OCO- may be substituted).
- X y represents an alkylene group having 2 to 10 carbon atoms (one or two or more —CH 2 — in the alkylene group may be —O—, —CO—, -COO- or -OCO- may be substituted.), A single bond, a 1,4-phenylene group or a trans-1,4-cyclohexylene group is preferable.
- l X y in the general formula (II-1) may be the same or different from each other, but are preferably the same. l is preferably an integer of 2 or more and 4 or less, more preferably 2.
- the compound represented by the general formula (II-1) according to the present invention is preferably a compound represented by the following general formula (II-2).
- M x is a hydrocarbon having 1 to 25 carbon atoms (one or more —CH 2 — in the hydrocarbon is O—, —CO—, —COO— and —OCO— may be substituted, but a hydrocarbon having 2 to 15 carbon atoms (one or more —CH in the hydrocarbon) 2- is preferably substituted with —O—, —CO—, —COO— or —OCO— so that the oxygen atom is not directly adjacent.
- each X is independently an alkylene group having 1 to 15 carbon atoms (one or more of —CH 2 — in the alkylene group is directly adjacent to an oxygen atom) May be substituted with —O—, —CO—, —COO—, —OCO—), —OCH 2 —, —CH 2 O—, —COO—, —OCO—, —CF 2 O—, —OCF 2 —, —CF 2 CF 2 —, —CH ⁇ CH—COO—, —CH ⁇ CH—OCO—, —COO—CH ⁇ CH—, —OCO—CH ⁇ CH—, —CH ⁇ CH—, —C ⁇ C—, single bond, 1,4-phenylene group or trans-1,4-cyclohexylene group (any hydrogen atom in 1,4-phenylene group is substituted by fluorine atom) Or an alkylene group having 2 to 15 carbon atoms (the alkylene group).
- One or two or more -CH 2 in the group - is, as the oxygen atoms are not directly adjacent, -O -, - CO -, - COO -, - OCO- may be substituted in).
- a single bond, 1,4-phenylene group or trans-1,4-cyclohexylene group is preferred.
- the four Xs in the general formula (II-2) may be the same or different from each other, but are preferably the same.
- l is preferably an integer of 2 or more and 4 or less, more preferably 2.
- a, b, c and d each independently represent 0 or 1, but a + b + c + d represents 2 or more.
- a + b + c + d is more preferably 2 to 4, and more preferably 2.
- the antioxidant represented by the general formula (II-1) according to the present invention is preferably a hindered phenol derivative represented by the following general formula (II).
- M represents an alkylene group having 1 to 15 carbon atoms (one or more —CH 2 — in the alkylene group is —O— so that the oxygen atom is not directly adjacent).
- —CO—, —COO—, and —OCO— may be substituted.
- M in the general formula (II) according to the present invention further includes 2 to 12 carbon atoms.
- M in the general formula (II) according to the present invention has 3 to 10 carbon atoms, more preferably 4 to 10 carbon atoms, still more preferably 5 to 10 carbon atoms, and still more preferably 6 to 10 carbon atoms.
- the antioxidant according to the present invention is a compound represented by the following formula (II-a6), formula (II-a7), formula (II-a8), formula (II-a9) or formula (II-a10) Is particularly preferred.
- the antioxidant according to the present invention preferably coexists with a liquid crystal compound, and more preferably coexists with a nematic liquid crystal compound (or a nematic liquid crystal composition).
- the liquid crystal composition preferably contains one or more antioxidants, and the content is preferably 0.001 to 1% by mass, and 0.001 to 0.5% by mass. More preferred is 0.01 to 0.3% by mass.
- the liquid crystal composition according to the present invention contains one or more liquid crystal compounds having a positive dielectric anisotropy having an absolute value of 4 or more, and the content of the liquid crystal compound is 3% by mass. Although it is above, it is preferably 5% by mass or more, more preferably 10% by mass or more, and particularly preferably 20% by mass or more. More specifically, it is preferably 3% by mass to 70% by mass, more preferably 5% by mass to 60% by mass, further preferably 10% by mass to 60% by mass, and more preferably 20% by mass. It is especially preferable that it is 60 mass%. Note that the dielectric anisotropy of the liquid crystal compound represents a value at 20 ° C.
- the “liquid crystal composition” in the present specification is a composition containing a liquid crystal compound having a positive dielectric anisotropy having an absolute value of 4 or more and the antioxidant according to the present invention.
- the liquid crystal composition according to the present invention comprises the antioxidant according to the present invention (including compounds represented by general formula (II-1), general formula (II-2) and general formula (II)), General formula (N1):
- R n1 represents an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms, and one or non-adjacent two or more —CH in the group. 2 — each independently may be substituted by —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, wherein one or two or more non-adjacent groups in the group
- Each hydrogen atom may be independently substituted with a fluorine atom
- Ring N 1 is a 1,4-cyclohexylene group (one or two or more non-adjacent —CH 2 — in the group may be substituted by —O— or —S—) or 1
- each hydrogen atom in the group independently represents a cyano group.
- Z n1 and Z n2 are each independently a single bond, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O -, -CH 2 CH 2 CF 2 O-, -COO-, -OCO- or -C ⁇ C- n n1 independently represents an integer of 0 to 4, and when n n1 is 2 or more, the rings N 1 may be the same or different, and when n n1 is 1 or more, Z n1 is Can be the same or different, X n1 , X n2 , X n3 , X n4 and X n5 each independently represent a hydrogen atom or a fluorine atom, Y n1 each independently represents a fluorine atom, a cyano group, a trifluoromethyl group,
- a liquid crystal composition excellent in light resistance or heat resistance can be provided.
- the liquid crystal composition containing the compound represented by the general formula (N1) and the antioxidant contained in the liquid crystal composition according to the present invention maintains high refractive index anisotropy ( ⁇ n) and is excellent in reliability. This is preferable.
- the compound represented by the general formula (N1) contained in the liquid crystal composition according to the present invention is preferably a liquid crystal compound having a positive dielectric anisotropy having an absolute value of 4 or more. More preferably, it is a liquid crystal compound having a positive dielectric anisotropy having a value of 5 or more, more preferably a liquid crystal compound having a positive dielectric anisotropy having an absolute value of 6 or more.
- a liquid crystal compound having a positive dielectric anisotropy having a value of 7 or more is more preferable, a liquid crystal compound having a positive dielectric anisotropy having an absolute value of 8 or more is more preferable, and an absolute More preferably, it is a liquid crystal compound having a positive dielectric anisotropy having a value of 9 or more, more preferably a liquid crystal compound having a positive dielectric anisotropy having an absolute value of 10 or more.
- Positive dielectric constant with a value of 15 or more More preferred is a liquid crystal compound having anisotropy, more preferred is a liquid crystal compound having a positive dielectric anisotropy having an absolute value of 20 or more, and a positive dielectric constant having an absolute value of 25 or more.
- a liquid crystal compound having a directivity is more preferable, and the upper limit of positive dielectric anisotropy is preferably 50 or less, more preferably 45 or less, and further preferably 40 or less.
- the content of the compound represented by the general formula (N1) is preferably 1 to 50% by mass, more preferably 2 to 45% by mass, and 3 to 40% by mass. % Is further preferable, 5 to 35% by mass is even more preferable, and 10 to 30% by mass is particularly preferable.
- the compound represented by the general formula (N1) is contained in one or more kinds, preferably 1 to 10 kinds, and preferably 1 to 9 kinds. More preferably, 1 to 8 types are contained, still more preferably 1 to 7 types are contained.
- the compound represented by the general formula (N1) according to the present invention is preferably a compound selected from the group consisting of compounds represented by the general formulas (N1-1) and (N1-2). More preferred is a compound represented by N1-2).
- R n1 , X n1 , X n2 , X n3 , X n4 , X n5 , Y n1 , n n1 and Z n1 are as described above.
- ring N 1 is 1,4-cyclohexylene group, tetrahydropyran-2,5-diyl group, 1,4-phenylene group, 3-fluoro-1,4-phenylene group or 3,5-difluoro- Represents a 1,4-phenylene group or a dioxane group.
- the content of the compound represented by the general formula (N1-1) is preferably 1 to 50% by mass, more preferably 2 to 45% by mass. It is more preferably 40% by mass, still more preferably 4 to 35% by mass, and particularly preferably 10 to 30% by mass.
- the content of the compound represented by the general formula (N1-2) is preferably 1 to 50% by mass, more preferably 2 to 45% by mass, It is more preferably 40% by mass, still more preferably 4 to 35% by mass, and particularly preferably 10 to 30% by mass.
- the compound represented by the general formula (N1) according to the present invention is more preferably the following general formula (N3).
- R n1 , X n1 , X n2 , X n4 , X n5 and Y n1 are as described above, and X 1 and X 2 are each independently a hydrogen atom or a fluorine atom.
- Ring N 1 is 1,4-cyclohexylene group, tetrahydropyran-2,5-diyl group, 1,4-phenylene group, 3-fluoro-1,4-phenylene group or 3,5-difluoro-1,4.
- n is an integer of 0 or more and 2 or less.
- the content of the compound represented by the general formula (N3) is preferably 1 to 50% by mass, more preferably 2 to 45% by mass, and 3 to 40% by mass. % Is more preferable, 4 to 35% by mass is even more preferable, and 10 to 30% by mass is particularly preferable.
- the content of each of the compounds represented by the general formulas (N3-1) to (N3-4) is preferably 0.01 to 15% by mass. It is more preferably 1 to 12% by mass, and further preferably 0.5 to 10% by mass.
- the liquid crystal composition according to the present invention preferably contains a compound represented by the general formula (K).
- each R k1 independently represents an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms. More than one —CH 2 — may be independently substituted by —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, one or not adjacent in the group
- Ring K 1 and Ring K 2 are each independently a 1,4-cyclohexylene group (one or two or more non-adjacent —CH 2 — in the group is substituted by —O— or —S—).
- a 1,4-phenylene group (one or two or more non-adjacent —CH ⁇ in the group may be substituted by —N ⁇ ), and hydrogen in the group
- Each atom may be independently substituted with a cyano group, a fluorine atom or a chlorine atom
- Ring K 0 represents a naphthalene-2,6-diyl group or a 1,4-phenylene group
- each hydrogen atom in the group may be independently substituted with a fluorine atom
- Z k1 , Z k2 and Z k3 each independently represent a single bond, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, — CF 2 O—, —CH 2 CH 2 CF 2 O—, —COO—, —OCO— or —C ⁇ C— represents a single bond, —CH 2 CH 2 —, —OC
- n k1 independently represents 0, 1, 2, 3 or 4, and when n k1 is 2 or more, the rings K 2 may be the same or different, X k1 , X k2 , X k3 and X k4 each independently represent a hydrogen atom or a fluorine atom, and Y k1 represents a fluorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group, A fluoromethoxy group or a 2,2,2-trifluoroethyl group is represented by a fluorine atom, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group or a trifluoromethoxy group.
- the content of the compound represented by the general formula (K) is preferably 0 to 30% by mass, more preferably 1 to 20% by mass, and 3 to 20% by mass. % Is more preferable, and it is still more preferable that it is 3 to 15 mass%.
- liquid crystal composition according to the present invention when the compound represented by the general formula (K) is added, it is contained in one or more kinds, preferably 1 to 10 kinds are contained, preferably 1 to 8 kinds are contained. More preferably, 1 to 6 types are contained, still more preferably 1 to 3 types are contained.
- the compound represented by the general formula (K) is preferably a compound represented by the following general formula (K1).
- the content of the compound represented by the general formula (K1) is preferably 0 to 30% by mass, more preferably 1 to 20% by mass, and 3 to 20% by mass. % Is more preferable, and it is still more preferable that it is 3 to 15 mass%.
- the compound represented by the general formula (K1) according to the present invention is preferably a compound selected from the group of compounds represented by the following general formulas (K11) to (K24), from the general formula (K11) to ( More preferred is a compound selected from the group of compounds represented by K17).
- R k1 , ring K 2 , Z k2 , Z k3 , n k1 , X k1 , X k2 , X k3 , X k4 and Y k1 are as described above.
- the compound represented by the general formula (K) is preferably a compound represented by the following general formula (K2).
- the content of the compound represented by the general formula (K2) is preferably 0 to 30% by mass, more preferably 1 to 20% by mass, and 3 to 20% by mass. % Is more preferable, and it is still more preferable that it is 3 to 15 mass%.
- the compound represented by the general formula (K2) according to the present invention is preferably a compound selected from the group of compounds represented by the following general formulas (K25) to (K28), from the general formula (K25) to ( More preferred is a compound selected from the group of compounds represented by K26).
- the content of each of the compounds represented by the general formulas (K25) to (K28) is preferably 0 to 15% by mass, and 0.01 to 12% by mass. More preferred is 0.5 to 10% by weight.
- the liquid crystal compound having a positive dielectric anisotropy and having an absolute value of 4 or more contained in the liquid crystal composition of the present invention is also preferably a general formula (Pa).
- R Nc1 represents an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, and one or non-adjacent two or more —CH 2 — in the group.
- Each independently may be substituted by —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, but may be an alkyl group having 1 to 5 carbon atoms or 2 carbon atoms.
- An alkenyl group of ⁇ 5 is preferred.
- the rings P 1 , P 2 and P 3 are each independently a 1,4-cyclohexylene group (one in the group or two or more non-adjacent —CH 2 — is — O— or —S— may be substituted) or a 1,4-phenylene group (one or two or more non-adjacent —CH ⁇ in the group may be substituted with —N ⁇ ).
- Each hydrogen atom in the group may be independently substituted with a cyano group, a fluorine atom or a chlorine atom, but a 1,4-cyclohexylene group, a tetrahydropyran-2,5-diyl group, A 1,4-phenylene group, a 3-fluoro-1,4-phenylene group or a 3,5-difluoro-1,4-phenylene group is preferred.
- Z Nc1 , Z Nc2 or Z Nc3 are each independently 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- represents a single bond, -CH 2 CH 2 -, - CH 2 O- or -CF 2 O -Is more preferred, and any one of Z Nc1 , Z Nc2 or Z Nc3 present is more preferably a single bond.
- n c1 , n c2 or n c3 each independently represents 0, 1 or 2.
- n c1 + n c2 + n c3 represents 1 to 5, more preferably 4 or less, and particularly preferably 3 or less.
- X Nc1 and X Nc2 each independently represent a hydrogen atom or a fluorine atom.
- Y Nc1 represents a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group, or a 2,2,2-trifluoroethyl group. It is preferably a fluorine atom, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group or a trifluoromethoxy group, and more preferably a fluorine atom, a trifluoromethyl group or a trifluoromethoxy group.
- the content of the compound represented by the general formula (Pa) is preferably 0 to 50% by mass, more preferably 1 to 40% by mass, 30 mass% is further more preferable, it is more preferable that it is 3-30 mass%, and it is still more preferable that it is 5-30 mass%.
- the compound represented by the general formula (Pa) according to the present invention is preferably a compound selected from the group of compounds represented by the general formulas (P01) to (P80).
- R Nc1 represents an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, and one or two or more non-adjacent groups in the group
- Each of —CH 2 — may be independently substituted with —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, but is an alkyl group having 1 to 5 carbon atoms.
- an alkenyl group having 2 to 5 carbon atoms is preferable.
- Y Nc2 is a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, fluoromethoxy group, difluoromethoxy group, trifluoromethoxy group or 2,2 , 2-trifluoroethyl group, preferably a fluorine atom, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group or a trifluoromethoxy group, preferably a fluorine atom, a trifluoromethyl group or a trifluoromethoxy group. More preferably it is.
- Examples of the compound represented by the general formula (Pa) according to the present invention include the following compounds.
- the liquid crystal composition according to the present invention has a dielectric anisotropy ( ⁇ ) ⁇ as a third component other than the antioxidant or the liquid crystal compound having a positive dielectric anisotropy having an absolute value of 4 or more. It may contain a compound that is 1 to +1 (preferably having a dielectric anisotropy ( ⁇ ) of ⁇ 0.5 to +0.5).
- R L1 and R L2 each independently represents an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms, Or two or more non-adjacent —CH 2 — may be each independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
- OL represents 0, 1, 2 or 3
- B L1 , B L2 and B L3 each independently represent (a) a 1,4-cyclohexylene group (one —CH 2 — present in this group or two or more —CH 2 — not adjacent to each other).
- OL 2 or 3 and a plurality of L L2 are present, they may be the same or different, and when OL is 2 or 3 and a plurality of B L3 is present, they are the same Or different.
- the compound represented by general formula (K), general formula (N1), and general formula (Pa) is excluded. 1) or 2 or more types, preferably 1 to 20 types, more preferably 2 to 10 types.
- the compound represented by the general formula (L) is preferably a compound selected from the group of compounds represented by the general formula (III-A) to the general formula (III-J).
- R 5 is preferably an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms. More preferably, it is a 5 alkyl group or an alkenyl group having 2 to 5 carbon atoms.
- R 6 is preferably an alkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or an alkenyloxy group having 2 to 10 carbon atoms, More preferably, it is an alkyl group having 1 to 5 carbon atoms, an alkoxyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyloxy group having 2 to 5 carbon atoms.
- the third component in the liquid crystal composition according to the present invention includes the general formula (III-A), the general formula (III-D), the general formula (III-F), the general formula (III-G), and the general formula (III- More preferred is a compound selected from H), which is a compound selected from general formula (III-A), general formula (III-F), general formula (III-G) and general formula (III-H). It is particularly preferred.
- R 5 represents an alkyl group having 1 to 5 carbon atoms or 2 carbon atoms.
- R 6 is preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms.
- R 5 and R 6 are preferably each independently an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms.
- the content of the compound represented by the general formula (L) as the third component is preferably 0 to 20% by mass, more preferably 1 to 20% by mass, and 3 to 20% by mass. More preferably, it is more preferably 3 to 15% by mass.
- each of R 51 and R 52 independently represents an alkyl group having 1 to 5 carbon atoms, an alkoxyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or 2 to 2 carbon atoms.
- 5 represents an alkenyloxy group
- X 51 and X 52 each independently represent a fluorine atom, a chlorine atom or a hydrogen atom.
- one or more compounds represented by the general formulas (V-9.1) to (V-9.3) may be contained.
- An embodiment of the liquid crystal composition according to the present invention includes an antioxidant represented by the general formula (II-1), a compound represented by the general formula (N1), a compound represented by the general formula (L), The antioxidant represented by the general formula (II-1), the compound represented by the general formula (N1), the compound represented by the general formula (L), and the general formula (Pa) The compound represented by general formula (II-1), the compound represented by general formula (N1), and the compound represented by general formula (L) And a compound represented by the general formula (Pa) and a compound represented by the general formula (K1) are more preferable.
- Another embodiment includes an antioxidant represented by the general formula (II-1), a compound represented by the general formula (N1-2), and a compound represented by the general formula (L). Is preferred.
- an antioxidant represented by the general formula (II-1) and at least one compound represented by the general formula (N1) And at least one compound represented by the general formula (K2) and at least one compound represented by the general formula (L).
- the liquid crystal composition of the present invention has a dielectric anisotropy ( ⁇ ) at 20 ° C. of 2.0 to 20.0, preferably 2.0 to 18.0, and more preferably 3.0 to 16.0. 4.0 to 16.0 are particularly preferable.
- the liquid crystal composition of the present invention has a refractive index anisotropy ( ⁇ n) at 20 ° C. of 0.08 to 0.18, more preferably 0.09 to 0.15, and 0.09 to 0.12. Particularly preferred. More specifically, it is preferably 0.10 to 0.18 when dealing with a thin cell gap, and preferably 0.08 to 0.10 when dealing with a thick cell gap.
- the liquid crystal composition of the present invention has a nematic phase-isotropic liquid phase transition temperature (T ni ) of 60 ° C. to 120 ° C., more preferably 70 ° C. to 110 ° C., and particularly preferably 70 ° C. to 100 ° C.
- T ni nematic phase-isotropic liquid phase transition temperature
- the liquid crystal composition of the present invention has a viscosity ( ⁇ ) at 20 ° C. of 10 to 30 mPa ⁇ s, more preferably 10 to 25 mPa ⁇ s, and particularly preferably 10 to 20 mPa ⁇ s.
- the liquid crystal composition of the present invention has a rotational viscosity ( ⁇ 1 ) at 20 ° C. of 50 to 130 mPa ⁇ s, more preferably 50 to 110 mPa ⁇ s, and particularly preferably 50 to 90 mPa ⁇ s. .
- the liquid crystal composition according to the present invention may contain a polymerizable compound in order to produce a liquid crystal display element such as a PS mode, a transverse electric field type PSA mode, or a transverse electric field type PSVA mode.
- a polymerizable compound that can be used include a photopolymerizable monomer having a liquid crystal skeleton in which a plurality of six-membered rings are connected, such as a biphenyl derivative and a terphenyl derivative that are polymerized by energy rays such as light.
- the liquid crystal composition of the present invention has the general formula (M).
- X 201 and X 202 each independently represent a hydrogen atom, a methyl group, or a —CF 3 group.
- X 201 and X 202 are each preferably a diacrylate derivative that is a hydrogen atom, and a dimethacrylate derivative that is both a methyl group, and a compound in which one is a hydrogen atom and the other is a methyl group.
- a preferred compound can be used depending on the application, but in the PSA display element, the polymerizable compound represented by the general formula (M) preferably has at least one methacrylate derivative, and preferably has two.
- 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, Represents a bond to a ring).
- at least one of Sp 201 and Sp 202 is preferably a single bond, either a single bond compound or one of which is a single bond and the other is an alkylene having 1 to 8 carbon atoms.
- Ring M 201 , Ring M 202 and Ring M 203 are each independently a trans-1,4-cyclohexylene group (one or two or more non-adjacent —CH 2 — in the group is —O— or May be substituted by —S—), 1,4-phenylene group (one or two or more non-adjacent —CH ⁇ in the group may be substituted by —N ⁇ ), 1,4-cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1,4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6- Represents a diyl group or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, and each hydrogen atom in the group is independently a fluorine atom, a —CF 3 group, or a carbon atom number of 1 to 10.
- Z 201 and Z 202 each independently represent —OCH 2 —, —CH 2 O—, —COO—, —OCO—, —CF 2 O—, —OCF 2 —, —CH 2 CH 2 —, — CF 2 CF 2 —, —CH ⁇ CH—COO—, —CH ⁇ CH—OCO—, —COO—CH ⁇ CH—, —OCO—CH ⁇ CH—, —COO—CH 2 CH 2 —, —OCO— CH 2 CH 2 —, —CH 2 CH 2 —COO—, —CH 2 CH 2 —OCO—, —COO—CH 2 —, —OCO—CH 2 —, —CH 2 —COO—, —CH 2 —OCO—, —CY 1 ⁇ CY 2 — (wherein Y 1 and Y 2 each independently represents a fluorine atom or a hydrogen atom), —C ⁇ C— or a single bond, —COO—
- n 201 represents 0, 1 or 2, with 0 or 1 being preferred. However, when there are a plurality of rings M 202 and Z 202 , they may be different or the same.
- the polymerizable compound-containing liquid crystal composition of the present invention contains at least one polymerizable compound represented by formula (M), preferably 1 to 5 types, and preferably 1 to 3 types. More preferably.
- the content of the polymerizable compound represented by the general formula (M) is too large, the energy required for the polymerization increases, the amount of the polymerizable compound remaining without being polymerized increases, and the display is poor. Therefore, the content is preferably 0.01 to 2.00% by mass, more preferably 0.05 to 1.00% by mass, and 0.10 to 0.50% by mass. It is particularly preferred that
- the ring structure between Sp 201 and Sp 202 is preferably a formula (XXa-1) to a formula (XXa-5),
- the formula (XXa-1) to the formula (XXa-3) are more preferable, and the formula (XXa-1) or the formula (XXa-2) is particularly preferable.
- both ends of the equation shall be connected to Sp 201 or Sp 202 .
- the polymerizable compound represented by the general formula (M) containing these skeletons is suitable for a PSA mode liquid crystal display element because of its alignment regulating force after polymerization, and a good alignment state can be obtained, thereby suppressing display unevenness. There is an effect that does not occur at all.
- the polymerizable monomer is preferably a compound represented by the formula (XX-1) to the general formula (XX-10), more preferably the formula (XX-1) to the formula (XX-4).
- Sp xx represents an alkylene group having 1 to 8 carbon atoms or —O— (CH 2 ) s — (wherein s represents an integer of 2 to 7, and an oxygen atom is bonded to the ring. ).
- the hydrogen atom in the phenyl group in the formula may be further substituted by —F, —Cl, —CF 3 , —CH 3 , or any one of formulas (R-1) to (R-15). .
- n 201 is 1, for example, a polymerizable compound such as the formula (M31) to the formula (M48) is preferable.
- the hydrogen atom in the phenyl group and naphthalene group in the formula is further substituted with —F, —Cl, —CF 3 , —CH 3 , or any one of formulas (R-1) to (R-15). May be.
- the polymerizable compound represented by the general formula (M) containing these skeletons is suitable for a PSA mode liquid crystal display element because of its alignment regulating force after polymerization, and a good alignment state can be obtained, thereby suppressing display unevenness. There is an effect that does not occur at all.
- n 201 is 1 and there are a plurality of formulas (R-1) or (R-2), for example, polymerizable compounds such as formulas (M301) to (M316) preferable.
- the hydrogen atom in the phenyl group and naphthalene group in the formula may be further substituted with —F, —Cl, —CF 3 , —CH 3 .
- polymerizable compounds represented by formula (M) for example, polymerizable compounds such as formula (Ia-1) to formula (Ia-31) are also preferable.
- the polymerizable compound represented by the general formula (M) containing these skeletons is suitable for a PSA mode liquid crystal display element because of its alignment regulating force after polymerization, and a good alignment state can be obtained, thereby suppressing display unevenness. There is an effect that does not occur at all.
- the polymerizable compound-containing liquid crystal composition containing the general formula (M) as the polymerizable compound has a low viscosity ( ⁇ ), a low rotational viscosity ( ⁇ 1 ), and a large elastic constant ( K 33 ) can be obtained, so that a PSA mode or PSVA mode liquid crystal display element using this can achieve a high-speed response.
- the liquid crystal display device using the liquid crystal composition of the present invention has a remarkable feature of high-speed response, and is particularly useful for a liquid crystal display device for active matrix driving, and includes TN mode, VA mode, PSVA mode, PSA. Applicable for mode, IPS mode, FFS mode or ECB mode.
- the polymerization proceeds even when no polymerization initiator is present, but may contain a polymerization initiator in order to accelerate the polymerization.
- the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzyl ketals, acylphosphine oxides, and the like.
- liquid crystal display element according to the present invention is not limited to this.
- FIG. 1 is a diagram schematically showing a configuration of a liquid crystal display element.
- the liquid crystal display element 10 according to the present invention has a liquid crystal composition sandwiched between a first transparent insulating substrate 2 and a second transparent insulating substrate 7 that are arranged to face each other.
- a liquid crystal display element of a lateral electric field type (an FFS mode as an example in the figure) having an object (or liquid crystal layer 5), characterized in that the liquid crystal composition of the present invention is used as the liquid crystal composition.
- the first transparent insulating substrate 2 has an electrode layer 3 formed on the surface on the liquid crystal layer 5 side.
- a pair of alignments that induce a homogeneous alignment between the liquid crystal layer 5 and the first transparent insulating substrate 2 and the second transparent insulating substrate 8 in direct contact with the liquid crystal composition constituting the liquid crystal layer 5.
- the film 4 is provided, and the liquid crystal molecules in the liquid crystal composition are aligned so as to be substantially parallel to the substrates 2 and 7 when no voltage is applied.
- the second substrate 7 and the first substrate 2 may be sandwiched between a pair of polarizing plates 1 and 8.
- a color filter 6 is provided between the second substrate 7 and the alignment film 4.
- the liquid crystal display element according to the present invention may be a so-called color filter on array (COA), or may be provided with a color filter between an electrode layer including a thin film transistor and a liquid crystal layer, or the thin film transistor.
- COA color filter on array
- a color filter may be provided between the electrode layer containing and the second substrate.
- the liquid crystal display element 10 includes a first polarizing plate 1, a first substrate 2, an electrode layer 3 including a thin film transistor, an alignment film 4, a liquid crystal layer 5 including a liquid crystal composition,
- the alignment film 4, the color filter 6, the second substrate 7, and the second polarizing plate 8 are sequentially stacked.
- the first substrate 2 and the second substrate 7 can be made of a transparent material having flexibility such as glass or plastic, and one of them can be an opaque material such as silicon.
- the two substrates 2 and 7 are bonded together by a sealing material and a sealing material such as an epoxy thermosetting composition disposed in the peripheral region, and in order to maintain the distance between the substrates, for example, Spacer columns made of resin formed by granular spacers such as glass particles, plastic particles, alumina particles, or the photolithography method may be arranged.
- FIG. 2 is an enlarged plan view of a region surrounded by the II line of the electrode layer 3 formed on the substrate 2 in FIG.
- FIG. 3 is a cross-sectional view of the liquid crystal display element shown in FIG. 1 cut along the line III-III in FIG.
- the electrode layer 3 including thin film transistors formed on the surface of the first substrate 2 includes a plurality of gate bus lines 26 for supplying scanning signals and a plurality of gate bus lines 26 for supplying display signals.
- Data bus lines 25 are arranged in a matrix so as to cross each other. In FIG. 2, only a pair of gate bus lines 25 and a pair of data bus lines 24 are shown.
- a unit pixel of the liquid crystal display device is formed by a region surrounded by the plurality of gate bus lines 26 and the plurality of data bus lines 25, and a pixel electrode 21 and a common electrode 22 are formed in the unit pixel. .
- a thin film transistor including a source electrode 27, a drain electrode 24, and a gate electrode 28 is provided in the vicinity of an intersection where the gate bus line 26 and the data bus line 25 intersect each other.
- the thin film transistor is connected to the pixel electrode 21 as a switch element that supplies a display signal to the pixel electrode 21.
- a common line 29 is provided in parallel with the gate bus line 26.
- the common line 29 is connected to the common electrode 22 in order to supply a common signal to the common electrode 22.
- a preferred embodiment of the structure of the thin film transistor is provided, for example, as shown in FIG. 3 so as to cover the gate electrode 11 formed on the surface of the substrate 2 and the gate electrode 11 and cover the substantially entire surface of the substrate 2.
- a protective film provided to cover a part of the surface of the gate insulating layer 12, the semiconductor layer 13 formed on the surface of the gate insulating layer 12 so as to face the gate electrode 11, and the semiconductor layer 17.
- a drain electrode 16 provided so as to cover one side end of the protective layer 14 and the semiconductor layer 13 and to be in contact with the gate insulating layer 12 formed on the surface of the substrate 2, and the protection
- a source electrode 17 which covers the film 14 and the other side end of the semiconductor layer 13 and is in contact with the gate insulating layer 12 formed on the surface of the substrate 2;
- Has an insulating protective layer 18 provided to cover the electrode 16 and the source electrode 17, a.
- An anodic oxide film (not shown) may be formed on the surface of the gate electrode 11 for reasons such as eliminating a step with the gate electrode.
- Amorphous silicon, polycrystalline polysilicon, or the like can be used for the semiconductor layer 13, but when a transparent semiconductor film such as ZnO, IGZO (In—Ga—Zn—O), ITO, or the like is used, it results from light absorption. It is also preferable from the viewpoint of suppressing the adverse effect of the optical carrier and increasing the aperture ratio of the element.
- an ohmic contact layer 15 may be provided between the semiconductor layer 13 and the drain electrode 16 or the source electrode 17 for the purpose of reducing the width and height of the Schottky barrier.
- a material in which an impurity such as phosphorus such as n-type amorphous silicon or n-type polycrystalline polysilicon is added at a high concentration can be used.
- the gate bus line 26, the data bus line 25, and the common line 29 are preferably metal films, more preferably Al, Cu, Au, Ag, Cr, Ta, Ti, Mo, W, Ni, or an alloy thereof, Al or Cu
- the case of using the alloy wiring is particularly preferable.
- the insulating protective layer 18 is a layer having an insulating function, and is formed of silicon nitride, silicon dioxide, silicon oxynitride film, or the like.
- the common electrode 22 is a flat electrode formed on almost the entire surface of the gate insulating layer 12, while the pixel electrode 21 is an insulating protective layer 18 covering the common electrode 22. It is a comb-shaped electrode formed on the top. That is, the common electrode 22 is disposed at a position closer to the first substrate 2 than the pixel electrode 21, and these electrodes are disposed so as to overlap each other via the insulating protective layer 18.
- the pixel electrode 21 and the common electrode 22 are formed of a transparent conductive material such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), IZTO (Indium Zinc Tin Oxide), and the like. Since the pixel electrode 21 and the common electrode 22 are formed of a transparent conductive material, the area opened by the unit pixel area increases, and the aperture ratio and transmittance increase.
- the pixel electrode 21 and the common electrode 22 have an interelectrode distance (also referred to as a minimum separation distance): R between the pixel electrode 21 and the common electrode 22 in order to form a fringe electric field between the electrodes.
- the distance between the first substrate 2 and the second substrate 7 is smaller than G.
- the distance between electrodes: R represents the distance in the horizontal direction on the substrate between the electrodes.
- the distance between the first substrate 7 and the second substrate 7 is smaller than G, so that a fringe electric field E is formed. Therefore, the FFS type liquid crystal display element can use a horizontal electric field formed in a direction perpendicular to a line forming the comb shape of the pixel electrode 21 and a parabolic electric field.
- the electrode width of the comb-shaped portion of the pixel electrode 21: l and the width of the gap of the comb-shaped portion of the pixel electrode 21: m are such that all the liquid crystal molecules in the liquid crystal layer 5 can be driven by the generated electric field. It is preferable to form.
- the minimum separation distance R between the pixel electrode and the common electrode can be adjusted as the (average) film thickness of the gate insulating film 12.
- an inter-electrode distance (also referred to as a minimum separation distance) between the pixel electrode 21 and the common electrode 22: R is different from that of the first substrate 2 and the second substrate.
- the distance from the substrate 7 may be larger than G (IPS method).
- IPS method a configuration in which comb-like pixel electrodes and comb-like common electrodes are provided alternately in substantially the same plane can be cited.
- the liquid crystal display element according to the present invention preferably has an FFS mode liquid crystal display composition utilizing a fringe electric field, and the shortest distance d between the common electrode 22 and the pixel electrode 21 is such that the alignment layers 4 (between the substrates) are aligned.
- the distance is shorter than the shortest separation distance D, a fringe electric field is formed between the common electrode and the pixel electrode, and the horizontal and vertical alignments of the liquid crystal molecules can be used efficiently.
- the FFS mode liquid crystal display element as in the preferred embodiment of the present invention, when a voltage is applied to the liquid crystal molecules arranged so that the long axis direction is parallel to the alignment direction of the alignment layer, it is common with the pixel electrode 21.
- An equipotential line of a parabolic electric field is formed between the electrode 22 and the upper part of the pixel electrode 21 and the common electrode 22 and is arranged along the electric field in which the major axis of the liquid crystal molecules in the liquid crystal layer 5 is formed.
- the liquid crystal composition according to the present invention uses liquid crystal molecules having positive dielectric anisotropy, the major axis direction of the liquid crystal molecules is aligned along the generated electric field direction.
- the color filter 6 preferably forms a black matrix (not shown) in a portion corresponding to the thin film transistor and the storage capacitor 23 from the viewpoint of preventing light leakage.
- a pair of alignment films 4 that are in direct contact with the liquid crystal composition constituting the liquid crystal layer 5 and induce homogeneous alignment are provided.
- the polarizing plate 1 and the polarizing plate 8 can be adjusted so that the viewing angle and the contrast are good by adjusting the polarizing axis of each polarizing plate, and the transmission axes thereof operate in the normally black mode.
- any one of the polarizing plate 1 and the polarizing plate 8 is preferably arranged so as to have a transmission axis parallel to the alignment direction of the liquid crystal molecules 30.
- a retardation film for widening the viewing angle can also be used.
- the measured characteristics are as follows.
- T ni Nematic phase-isotropic liquid phase transition temperature (° C.)
- T cn Solid phase-nematic phase transition temperature (° C)
- ⁇ n Refractive index anisotropy at 20 ° C.
- ⁇ Dielectric anisotropy at 20 ° C.
- Drop mark The drop mark of the liquid crystal display device was evaluated by the following four-step evaluation of the drop mark that appeared white when the entire surface was displayed in black.
- Example 1 Liquid crystal compositions LC-1 (Example 1), LC-A (Comparative Example 1) and LC-B (Comparative Example 2) were prepared. The measurement of these physical property values, the measurement of VHR (Init) and VHR (HEAT), the presence or absence of dripping marks, and the presence or absence of a line afterimage were evaluated.
- the antioxidants (St-1) and (St-2) are the antioxidants (St-1) and (St-2) are the antioxidants (St-1) and (St-2) are the antioxidants (St-1) and (St-2) are the antioxidants (St-1) and (St-2) are the antioxidants (St-1) and (St-2) are the antioxidants (St-1) and (St-2) are the antioxidants (St-1) and (St-2) are the antioxidantst-2)
- the liquid crystal composition LC-1 of the present invention has a liquid crystal phase in a wide temperature range, low viscosity, good solubility at low temperatures, high specific resistance and high voltage holding ratio, heat and light
- a stable ⁇ is a positive liquid crystal composition, and a liquid crystal display device using this composition is excellent in display quality and hardly causes display defects such as dripping marks and line afterimages.
- the liquid crystal compositions LC-2, LC-3, LC-4 and LC-5 of the present invention have a liquid crystal phase in a wide temperature range, low viscosity, good solubility at low temperatures, A liquid crystal composition having a high specific resistance and a high voltage holding ratio and a positive ⁇ that is stable to heat and light, and a liquid crystal display device using this is excellent in display quality and has a display defect such as a drop mark or a line afterimage. It was confirmed that it was difficult to occur.
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Abstract
Description
一般式(II-1)
一般式(II-1)
一般式(N1):
環N1は、1,4-シクロヘキシレン基(基中の1個又は非隣接の2個以上の-CH2-は-O-又は-S-によって置換されていても良い。)又は1,4-フェニレン基(基中の1個又は非隣接の2個以上の-CH=は-N=によって置換されていても良い。)を表し、前記基中の水素原子はそれぞれ独立してシアノ基、フッ素原子で置換されていても良く、
Zn1およびZn2は、それぞれ独立的に、単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-CH2CH2CF2O-、-COO-、-OCO-または-C≡C-を表し、
nn1は、それぞれ独立的に、0~4の整数を表し、かつnn1が2以上場合、環N1は同一でも良く、異なっていても良く、nn1が1以上の場合、Zn1は同一でも異なっていても良く、
Xn1、Xn2、Xn3、Xn4及びXn5は、それぞれ独立的に、水素原子又はフッ素原子を表し、
Yn1は、それぞれ独立的に、フッ素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基又は2,2,2-トリフルオロエチル基を表すが、フッ素原子、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基又はトリフルオロメトキシ基を表す。)で表される化合物を1種又は2種以上を含有することが好ましい。
本発明に係る液晶組成物において一般式(N1-1)で表される化合物の含有量は、1から50質量%であることが好ましく、2から45質量%であることがより好ましく、3から40質量%がさらに好ましく、4から35質量%であることがよりさらに好ましく、10から30質量%であることが特に好ましい。
環N1は、1,4-シクロヘキシレン基、テトラヒドロピラン-2,5-ジイル基、1,4-フェニレン基、3-フルオロ-1,4-フェニレン基又は3,5-ジフルオロ-1,4-フェニレン基、ジオキサン基を表し、nは0以上2以下の整数である。)
本発明に係る液晶組成物において一般式(N3)で表される化合物の含有量は、1から50質量%であることが好ましく、2から45質量%であることがより好ましく、3から40質量%がさらに好ましく、4から35質量%であることがよりさらに好ましく、10から30質量%であることが特に好ましい。
環K1および環K2は、それぞれ独立的に、1,4-シクロヘキシレン基(基中の1個又は非隣接の2個以上の-CH2-は-O-又は-S-によって置換されていても良い。)又は1,4-フェニレン基(基中の1個又は非隣接の2個以上の-CH=は-N=によって置換されていても良い。)を表し、基中の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
環K0は、ナフタレン-2,6-ジイル基または1,4-フェニレン基を表し、基中の水素原子は、それぞれ独立的に、フッ素原子に置換されてもよく、
Zk1、Zk2及びZk3は、それぞれ独立的に、単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-CH2CH2CF2O-、-COO-、-OCO-又は-C≡C-を表すが、単結合、-CH2CH2-、-OCH2-、-CH2O-、-OCF2-又は-CF2O-が更に好ましい。
Xk1、Xk2、Xk3およびXk4は、それぞれ独立的に、水素原子またはフッ素原子を表し、 Yk1は、フッ素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基又は2,2,2-トリフルオロエチル基を表すが、フッ素原子、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基又はトリフルオロメトキシ基である。)
本発明に係る液晶組成物において一般式(K)で表される化合物の含有量は、0から30質量%であることが好ましく、1から20質量%であることがより好ましく、3から20質量%がさらに好ましく、3から15質量%であることがよりさらに好ましい。
本発明に係る液晶組成物において一般式(K1)で表される化合物の含有量は、0から30質量%であることが好ましく、1から20質量%であることがより好ましく、3から20質量%がさらに好ましく、3から15質量%であることがよりさらに好ましい。
前記一般式(K)で表される化合物は、以下の一般式(K2)で表される化合物が好ましい。
本発明に係る液晶組成物において一般式(K2)で表される化合物の含有量は、0から30質量%であることが好ましく、1から20質量%であることがより好ましく、3から20質量%がさらに好ましく、3から15質量%であることがよりさらに好ましい。
OLは0、1、2又は3を表し、
BL1、BL2及びBL3はそれぞれ独立して
(a) 1,4-シクロヘキシレン基(この基中に存在する1個の-CH2-又は隣接していない2個以上の-CH2-は-O-に置き換えられてもよい。)及び
(b) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)中の1個及び/又は2個以上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
LL1及びLL2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-COO-、-OCO-、-OCF2-、-CF2O-、-CH=N-N=CH-、-CH=CH-、-CF=CF-又は-C≡C-を表し、
OLが2又は3であってLL2が複数存在する場合は、それらは同一であっても異なっていても良く、OLが2又は3であってBL3が複数存在する場合は、それらは同一であっても異なっていても良い。ただし、一般式(K)、一般式(N1)および一般式(Pa)で表される化合物を除く。)を1種又は2種以上含有することが好ましく、1種から20種含有することがより好ましく、2種から10種含有することが更に好ましい。
Tcn :固体相-ネマチック相転移温度(℃)
Δn :20℃における屈折率異方性
Δε :20℃における誘電率異方性
η :20℃における粘度(mPa・s)
γ1 :20℃における回転粘性(mPa・s)
VHR(Init):周波数60Hz,印加電圧1Vの条件下で60℃における電圧保持率(%)
VHR(HEAT):100℃の状態で48時間放置後に測定した周波数60Hz,印加電圧1Vの条件下で60℃における電圧保持率(%)
滴下痕:液晶表示装置の滴下痕の評価は、全面黒表示した場合における白く浮かび上がる滴下痕を目視にて以下の4段階評価で行った。
○ :滴下痕がごく僅かに有るも許容できるレベル
△ :滴下痕が有り許容できないレベル
× :滴下痕が有りかなり劣悪なレベル
線残像:液晶表示素子の線残像試験は、表示エリア内に所定の固定パターンを2000時間表示させた時に、固定パターンの境界部分に生じる線状の残像のレベルを目視にて以下の4段階評価で行った。
○ :線残像がごく僅かに有るも許容できるレベル
△ :線残像が有り許容できないレベル
× :線残像が有りかなり劣悪なレベル
(側鎖)
-F -F フッ素原子
F- -F フッ素原子
-n -CnH2n+1 炭素数nの直鎖状のアルキル基
n- CnH2n+1- 炭素数nの直鎖状のアルキル基
-On -OCnH2n+1 炭素数nの直鎖状のアルコキシル基
nO- CnH2n+1O- 炭素数nの直鎖状のアルコキシル基
-V -CH=CH2
V- CH2=CH-
-V1 -CH=CH-CH3
1V- CH3-CH=CH-
-2V -CH2-CH2-CH=CH3
V2- CH3=CH-CH2-CH2-
-2V1 -CH2-CH2-CH=CH-CH3
1V2- CH3-CH=CH-CH2-CH2
(連結基)
-CF2O- -CF2-O-
-OCF2- -O-CF2-
-1O- -CH2-O-
-O1- -O-CH2-
(環構造)
液晶組成物LC-1(実施例1)、LC-A(比較例1)及びLC-B(比較例2)を調製した。これらの物性値の測定、VHR(Init)及びVHR(HEAT)の測定、滴下痕の有無、線残像の有無を評価したところ、以下の通りであった。
(実施例2、実施例3、実施例4、実施例5、実施例6及び比較例3)
液晶組成物LC-2(実施例2)、LC-3(実施例3)、LC-4(実施例4)、LC-5(実施例5)、LC-6(実施例)及びLC-C(比較例3)を調製した。これらの物性値の測定、VHR(Init)及びVHR(HEAT)の測定、滴下痕の有無、線残像の有無を評価したところ、以下の通りであった。
2 第一の基板
3 電極層
4 配向膜
5 液晶層
6 カラーフィルタ
6G カラーフィルタ緑
6R カラーフィルタ赤
7 第二の基板
11 ゲート電極
12 ゲート絶縁膜
13 半導体層
14 絶縁層
15 オーミック接触層
16 ドレイン電極
17 ソース電極
18 絶縁保護層
21 画素電極
22 共通電極
23 ストレイジキャパシタ
24 ドレイン電極
25 データバスライン
27 ソースバスライン
29 共通ライン
30 バッファー層
Claims (9)
- 絶対値が4以上である正の誘電率異方性を有する液晶化合物を1種以上を3%以上含有する液晶組成物に用いる液晶組成物用酸化防止剤であって、
一般式(II-1)
(式中、Myは炭素数1から25の炭化水素(該炭化水素中の1つ又は2つ以上の-CH2-は、酸素原子が直接隣接しないように、-O-、-CO-、-COO-、-OCO-に置換されていても良い。)、1,4-フェニレン基、トランス-1,4-シクロヘキシレン基を表し、1,4-フェニレン基は任意の水素原子がフッ素原子により置換されていても良く、 Xyは互いに同一であっても異なっても良く、炭素数1から15のアルキレン基(該アルキレン基中の1つ又は2つ以上の-CH2-は、酸素原子が直接隣接しないように、-O-、-CO-、-COO-、-OCO-に置換されていても良い。)、-OCH2-、-CH2O-、-COO-、-OCO-、-CF2O-、-OCF2-、-CF2CF2-、-CH=CH-COO-、-CH=CH-OCO-、-COO-CH=CH-、-OCO-CH=CH-、-CH=CH-、-C≡C-、単結合、1,4-フェニレン基またはトランス-1,4-シクロヘキシレン基を表し、1,4-フェニレン基は任意の水素原子がフッ素原子により置換されていても良く、
lは2~6の整数を表す。)で表されることを特徴とする、液晶組成物用酸化防止剤。 - 前記一般式(II-1)は、一般式(II-2)
(式中、Mxは炭素数1から25の炭化水素(該炭化水素中の1つ又は2つ以上の-CH2-は、酸素原子が直接隣接しないように、-O-、-CO-、-COO-、-OCO-に置換されていても良い。)を表し、
Xは互いに同一であっても異なっても良く、炭素数1から15のアルキレン基(該アルキレン基中の1つ又は2つ以上の-CH2-は、酸素原子が直接隣接しないように、-O-、-CO-、-COO-、-OCO-に置換されていても良く)、-OCH2-、-CH2O-、-COO-、-OCO-、-CF2O-、-OCF2-、-CF2CF2-、-CH=CH-COO-、-CH=CH-OCO-、-COO-CH=CH-、-OCO-CH=CH-、-CH=CH-、-C≡C-、単結合、1,4-フェニレン基またはトランス-1,4-シクロヘキシレン基を表し、1,4-フェニレン基は任意の水素原子がフッ素原子により置換されていても良く、
a、b、c、dはそれぞれ独立的に0または1を表すが、a+b+c+dは2以上を表す。)で表される化合物である、請求項1に記載の液晶組成物用酸化防止剤。 - 前記一般式(II-2)のa+b+c+dが2から4である、請求項2に記載の液晶組成物用酸化防止剤。
- 前記一般式(II-1)又は前記一般式(II-2)は、一般式(II)
(上記一般式(II)中、Mは炭素数1から15のアルキレン基(該アルキレン基中の1つ又は2つ以上の-CH2-は、酸素原子が直接隣接しないように、-O-、-CO-、-COO-、-OCO-に置換されていても良く)、-OCH2-、-CH2O-、-COO-、-OCO-、-CF2O-、-OCF2-、-CF2CF2-、-CH=CH-COO-、-CH=CH-OCO-、-COO-CH=CH-、-OCO-CH=CH-、-CH=CH-、-C≡C-、単結合、1,4-フェニレン基、トランス-1,4-シクロヘキシレン基を表し、1,4-フェニレン基は任意の水素原子がフッ素原子により置換されていても良い。)で表される化合物である、請求項1から3のいずれか一項に記載の液晶組成物用酸化防止剤。 - 前記絶対値が4以上である正の誘電率異方性を有する液晶化合物として、一般式(N1):
(上記一般式(N1)中、Rn1は、炭素原子数1~10のアルキル基又は炭素原子数2~10のアルケニル基を表し、基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立的に、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていても良く、基中の1個又は非隣接の2個以上の水素原子はそれぞれ独立的にフッ素原子で置換されていても良く、
環N1は、1,4-シクロヘキシレン基(基中の1個又は非隣接の2個以上の-CH2-は-O-又は-S-によって置換されていても良い。)又は1,4-フェニレン基(基中の1個又は非隣接の2個以上の-CH=は-N=によって置換されていても良い。)を表し、前記基中の水素原子はそれぞれ独立してシアノ基、フッ素原子で置換されていても良く、
Zn1およびZn2は、それぞれ独立的に、単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-CH2CH2CF2O-、-COO-、-OCO-または-C≡C-を表し、
nn1は、それぞれ独立的に、0~4の整数を表し、かつnn1が2以上場合、環N1は同一でも良く、異なっていても良く、
Xn1、Xn2、Xn3、Xn4及びXn5は、それぞれ独立的に、水素原子又はフッ素原子を表し、
Yn1は、それぞれ独立的に、フッ素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基又は2,2,2-トリフルオロエチル基を表すが、フッ素原子、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基又はトリフルオロメトキシ基である。)
で表される化合物を1種以上と、
請求項1~5のいずれか一項に記載の酸化防止剤と、を含む液晶組成物。 - 重合性化合物を1種以上含有する、請求項6に記載の液晶組成物。
- 透明導電性材料からなる共通電極を具備した第一の基板と、透明導電性材料からなる画素電極と各画素に具備した画素電極を制御する薄膜トランジスタを具備した第二の基板と、前記第一の基板と第二の基板間に挟持された液晶組成物を有し、該液晶組成物中の液晶分子の電圧無印加時の配向が前記基板に対して略平行または略垂直である液晶表示素子であって、該液晶組成物として請求項6または7に記載のネマチック液晶組成物を用いた液晶表示素子。
- 請求項8に記載の液晶組成物を用い、電圧印加下あるいは電圧無印加下で該液晶組成物中に含有する重合性化合物を重合させて作製した液晶表示素子。
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| PCT/JP2014/083446 Ceased WO2015098661A1 (ja) | 2013-12-25 | 2014-12-17 | 液晶組成物用酸化防止剤、液晶組成物及びこれを用いた液晶表示素子 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170029698A1 (ja) |
| JP (1) | JP5950058B2 (ja) |
| CN (1) | CN105849234A (ja) |
| TW (1) | TW201538690A (ja) |
| WO (1) | WO2015098661A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016152340A1 (ja) * | 2015-03-24 | 2016-09-29 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
| JP2020041014A (ja) * | 2018-09-06 | 2020-03-19 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575023B (zh) * | 2020-06-12 | 2022-03-01 | 江苏三月科技股份有限公司 | 一种化合物添加剂及其制备的液晶取向剂、液晶取向膜 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006206819A (ja) * | 2005-01-31 | 2006-08-10 | Dainippon Ink & Chem Inc | ネマチック液晶組成物及びこれを用いた液晶表示素子 |
| JP2013177612A (ja) * | 2006-09-01 | 2013-09-09 | Merck Patent Gmbh | 液晶媒体 |
| WO2013141116A1 (ja) * | 2012-03-19 | 2013-09-26 | Dic株式会社 | ネマチック液晶組成物 |
| WO2013187373A1 (ja) * | 2012-06-15 | 2013-12-19 | Dic株式会社 | ネマチック液晶組成物及びこれを用いた液晶表示素子 |
| JP5534381B1 (ja) * | 2012-08-22 | 2014-06-25 | Dic株式会社 | ネマチック液晶組成物 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8574456B2 (en) * | 2008-02-20 | 2013-11-05 | Merck Patent Gmbh | Liquid-crystalline medium and liquid crystal display |
-
2014
- 2014-12-17 WO PCT/JP2014/083446 patent/WO2015098661A1/ja not_active Ceased
- 2014-12-17 JP JP2015551920A patent/JP5950058B2/ja active Active
- 2014-12-17 US US15/106,448 patent/US20170029698A1/en not_active Abandoned
- 2014-12-17 CN CN201480071034.8A patent/CN105849234A/zh active Pending
- 2014-12-25 TW TW103145371A patent/TW201538690A/zh unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006206819A (ja) * | 2005-01-31 | 2006-08-10 | Dainippon Ink & Chem Inc | ネマチック液晶組成物及びこれを用いた液晶表示素子 |
| JP2013177612A (ja) * | 2006-09-01 | 2013-09-09 | Merck Patent Gmbh | 液晶媒体 |
| WO2013141116A1 (ja) * | 2012-03-19 | 2013-09-26 | Dic株式会社 | ネマチック液晶組成物 |
| WO2013187373A1 (ja) * | 2012-06-15 | 2013-12-19 | Dic株式会社 | ネマチック液晶組成物及びこれを用いた液晶表示素子 |
| JP5534381B1 (ja) * | 2012-08-22 | 2014-06-25 | Dic株式会社 | ネマチック液晶組成物 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016152340A1 (ja) * | 2015-03-24 | 2016-09-29 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
| JPWO2016152340A1 (ja) * | 2015-03-24 | 2018-01-11 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
| US10647921B2 (en) | 2015-03-24 | 2020-05-12 | Jnc Corporation | Liquid crystal composition and liquid crystal display device |
| JP2020041014A (ja) * | 2018-09-06 | 2020-03-19 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
| JP7268312B2 (ja) | 2018-09-06 | 2023-05-08 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201538690A (zh) | 2015-10-16 |
| JPWO2015098661A1 (ja) | 2017-03-23 |
| US20170029698A1 (en) | 2017-02-02 |
| CN105849234A (zh) | 2016-08-10 |
| JP5950058B2 (ja) | 2016-07-13 |
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