WO2016208411A1 - ネマチック液晶組成物及びこれを用いた液晶表示素子 - Google Patents
ネマチック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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- WO2016208411A1 WO2016208411A1 PCT/JP2016/067222 JP2016067222W WO2016208411A1 WO 2016208411 A1 WO2016208411 A1 WO 2016208411A1 JP 2016067222 W JP2016067222 W JP 2016067222W WO 2016208411 A1 WO2016208411 A1 WO 2016208411A1
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- 0 CC([C@]12OC(C)(C)O[C@]1*2)(c1ccccc1)c1ccccc1 Chemical compound CC([C@]12OC(C)(C)O[C@]1*2)(c1ccccc1)c1ccccc1 0.000 description 6
- MILSYCKGLDDVLM-UHFFFAOYSA-N CC(C)(c1ccccc1)c1ccccc1 Chemical compound CC(C)(c1ccccc1)c1ccccc1 MILSYCKGLDDVLM-UHFFFAOYSA-N 0.000 description 1
- LCRDYQLDFQLXMG-ULAWRXDQSA-N C[C@H]1[C@H]2OC[C@H](C)[C@H]2OC1 Chemical compound C[C@H]1[C@H]2OC[C@H](C)[C@H]2OC1 LCRDYQLDFQLXMG-ULAWRXDQSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K19/00—Liquid crystal materials
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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
- C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
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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
- 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
- C09K19/14—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain
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- C—CHEMISTRY; METALLURGY
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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
- 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
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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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
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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
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
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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
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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
- C09K19/56—Aligning agents
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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
- C09K19/58—Dopants or charge transfer agents
- C09K19/586—Optically active dopants; chiral dopants
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- G—PHYSICS
- 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
- 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
Definitions
- the present invention relates to a nematic liquid crystal composition having a negative dielectric anisotropy ( ⁇ ) useful as a liquid crystal display material, and a liquid crystal display device using the same.
- Liquid crystal display elements are used in clocks, calculators, various household electrical devices, measuring devices, automotive panels, word processors, electronic notebooks, printers, computers, televisions, and the like.
- Typical liquid crystal display methods include TN (twisted nematic), STN (super twisted nematic), DS (dynamic light scattering), GH (guest / host), and IPS (in-plane switching).
- Type OCB (optical compensation birefringence) type, ECB (voltage controlled birefringence) type, VA (vertical alignment) type, CSH (color super homeotropic) type, FLC (ferroelectric liquid crystal), etc.
- Examples of the driving method include static driving, multiplex driving, simple matrix method, active matrix (AM) method driven by TFT (thin film transistor), TFD (thin film diode), and the like.
- the IPS type, ECB type, VA type, CSH type, and the like have a feature that a liquid crystal material having a negative value of ⁇ is used.
- the VA type display method by AM driving is used for a display element that requires a high speed and a wide viewing angle, such as a television.
- Nematic liquid crystal compositions used in VA type display systems are required to have a high-speed response corresponding to 3D or high definition. That is, it is important that the rotational viscosity ( ⁇ 1) of the liquid crystal composition is small, the elastic constant (K 33 ) is large, and the value of ⁇ 1 / K 33 obtained from these is sufficiently small.
- ⁇ n of the liquid crystal material can be appropriately increased in accordance with the small cell gap for improving the response speed. It is necessary to adjust to. In addition, it is required to keep ⁇ 1 of the liquid crystal composition small.
- a liquid crystal composition using the following liquid crystal compounds (A) and (B) having a 2,3-difluorophenylene skeleton (see Patent Document 1) as a liquid crystal material having a negative ⁇ is disclosed. small ⁇ 1 / K 33 has not been obtained to.
- Patent Document 3 discloses that the response speed of a homeotropic liquid crystal cell is improved by using a liquid crystal material having a large index represented by (Expression 1), but this is not sufficient.
- Patent Document 4 discloses a liquid crystal composition using a biphenyl compound and a liquid crystal compound having a negative dielectric constant, but has not disclosed a liquid crystal composition using a chiral agent.
- Patent Document 5 discloses a vertical alignment type liquid crystal display device using a chiral agent
- Patent Document 6 discloses a vertical alignment type super-twisted liquid crystal display element and a manufacturing method thereof. A low drive voltage, a high transmittance, and a fast response speed are not compatible.
- JP-A-8-104869 WO2015 / 050035A1 JP 2006-301643
- the problem to be solved by the present invention is that the refractive index anisotropy ( ⁇ n) is large, the rotational viscosity ( ⁇ 1) is small, the voltage holding ratio (VHR) is high, the elastic constant (K 33 ) is large, and negative.
- a liquid crystal composition having a dielectric anisotropy ( ⁇ ) is provided, and when this is used, display defects such as dripping marks, image sticking, and display unevenness are absent or suppressed, and a low driving voltage and high transmission are provided.
- a liquid crystal display device with excellent display quality which has both a high response rate and a high response speed.
- liquid crystal display element that solves the problem can be obtained. Further, it has been found that a liquid crystal display element of PS mode, PSA mode, PSVA mode, PS-IPS mode or PS-FFS mode using this liquid crystal composition can be provided.
- a liquid crystal composition having a large refractive index anisotropy ( ⁇ n), a small rotational viscosity ( ⁇ 1), a high voltage holding ratio (VHR), and a negative dielectric anisotropy ( ⁇ ) can be provided. Furthermore, when this is used, there is no display defect such as dripping marks, image sticking, display unevenness, etc., or it is suppressed, and a liquid crystal display with excellent display quality that combines low drive voltage, high transmittance and fast response speed. An element can be provided.
- the liquid crystal composition of the present invention has the formula (I) consisting of an absolute value of dielectric anisotropy (
- R 01 , R 02 , R 03 and R 04 are each independently an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, Represents an alkenyloxy group having 2 to 10 carbon atoms, a hydrogen atom in the alkyl group may be substituted by a fluorine atom, and n 01 and n 02 each independently represents 0 or 1. It is a liquid crystal composition having a negative dielectric anisotropy containing one or more compounds.
- the numerical value obtained by the formula (I) is preferably 4, is preferably 5, is preferably 6, is preferably 7, is preferably 8, is preferably 9, is preferably 10, is preferably 12, is preferably 12, 14 is preferable, 15 is preferable, 16 is preferable, 17 is preferable, 18 is preferable, 19 is preferable, and 20 is preferable.
- the upper limit of the numerical value obtained by the formula (I) is preferably 65, 60 is preferable, 55 is preferable, 50 is preferable, 45 is preferable, 44 is preferable, 43 is preferable, 42 is preferable, 41 is preferable, and 40 is preferable.
- the chiral agent for inducing pitch may be any compound having an asymmetric carbon atom, but a 1,4-phenylene group (one hydrogen atom in this group or Two may be substituted with fluorine, methyl group, or methoxy group.
- the molecular structure preferably has one or more.
- the liquid crystal composition of the present invention is preferably a nematic liquid crystal composition having a negative ⁇ , and is preferably a chiral nematic liquid crystal composition having a negative ⁇ .
- a chiral agent used in the TN mode or STN mode may be diverted as a chiral agent that induces pitch.
- a plurality of chiral agents may be mixed and used.
- a compound having an asymmetric atom, an axially asymmetric compound, or a mixture of these may be used.
- the compound having an asymmetric atom is preferably a compound represented by the general formula (Ch-I).
- R 100 and R 101 are each independently a hydrogen atom, —CN, —NO 2 , halogen atom, —OCN, —SCN, —SF 5 , carbon atoms of 1 to 30 Represents a chiral group containing one chiral or achiral alkyl group, a polymerizable group, or a ring structure, and when n 11 is 0, at least one of R 100 and R 101 is a chiral alkyl group;
- Z 100 and Z 101 are each independently —O—, —S—, —CO—, —COO—, —OCO—, —O—COO—, —CO—N (R 105 ) —, —N ( R 105 ) —CO—, —OCH 2 —, —CH 2 O—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —S—, —S—S
- R 100 and R 101 are each independently a hydrogen atom, —CN, —NO 2 , halogen atom, —OCN, —SCN, —SF 5 , or 1 to 30 carbon atoms. Or a chiral group containing a chiral or achiral alkyl group, a polymerizable group, or a ring structure. When n 11 is 0, at least one of R 100 and R 101 is a chiral alkyl group.
- R 100 or R 101 in the general formula (Ch-I) is a chiral or achiral alkyl group having 1 to 30 carbon atoms, one or more non-adjacent methylenes in the alkyl group
- the group (—CH 2 —) represents —O—, —S—, —NH—, —N (CH 3 ) —, —CO—, —COO—, in which oxygen atoms or sulfur atoms are not directly bonded to each other.
- C ⁇ C— may be substituted, and one or more hydrogen atoms in the alkyl group may be substituted with a halogen atom or a cyano group.
- the alkyl group may be a linear group, a branched chain group, or a group containing a ring structure.
- R 100 or R 101 are bonded to A 100 (or D, Z 101 ) or A 101 (or D, Z 100 ) at the left end, respectively.
- R 103 and R 104 each independently represents a linear or branched alkyl group having 1 to 12 carbon atoms, or a hydrogen atom.
- R 103 was subjected to a carbon atom to R 103 are bonded (* R 103 is a linear or branched alkyl group having 1 to 10 carbon atoms so that the (position) is an asymmetric atom.
- One or more methylene groups of the alkyl group are —O—, —S—, —NH—, —N (CH 3 ) —, —CO, in which oxygen atoms or sulfur atoms are not directly bonded to each other.
- the alkyl group may have a polymerizable group.
- the polymerizable group include a vinyl group, an allyl group, and a (meth) acryloyl group.
- R 103 in the general formulas (Ra) to (Rj) is a linear or branched group having 1 to 12 carbon atoms in which a methylene group or a hydrogen atom is not substituted with another group (ie, unsubstituted). It is preferably a branched alkyl group, more preferably an unsubstituted straight chain or branched alkyl group having 1 to 8 carbon atoms, and an unsubstituted straight chain having 1 to 6 carbon atoms. More preferably, the alkyl group is in the form of a ring.
- R 104 in the general formula (Rd) or (Ri) is preferably a hydrogen atom or an unsubstituted straight-chain or branched alkyl group having 1 to 5 carbon atoms, and an unsubstituted carbon atom It is more preferably a linear alkyl group of 1 to 3, more preferably a hydrogen atom or a methyl group.
- n 12 is an integer of 0 to 20, preferably an integer of 0 to 10, more preferably an integer of 0 to 5, and still more preferably 0.
- n 13 is 0 or 1.
- n 14 is an integer of 0-5.
- X 101 and X 102 each independently represent a halogen atom (a fluorine atom, a chlorine atom, a bromine atom, an iodine atom), a cyano group, or a phenyl group (1 of the phenyl group). Or two or more arbitrary hydrogen atoms may be substituted with a halogen atom, a methyl group, a methoxy group, a trifluoromethyl group (—CF 3 ), a trifluoromethoxy group (—OCF 3 ), or a carbon.
- halogen atom a fluorine atom, a chlorine atom, a bromine atom, an iodine atom
- a cyano group or a phenyl group (1 of the phenyl group.
- two or more arbitrary hydrogen atoms may be substituted with a halogen atom, a methyl group, a methoxy group, a trifluoromethyl group (—CF 3
- the carbon atom (position marked with *) to which X 101 is bonded is an asymmetric atom.
- X 101 and R 103 are groups different from each other.
- X 101 and X 102 are groups different from each other so that the carbon atom to which X 101 is bonded (position marked with *) is an asymmetric atom.
- X 101 and X 102 in the general formulas (Ra), (Rb), (Rc), (Rf), (Rg), (Rh), and (Rk) are each independently a halogen atom, a phenyl group ( One or more arbitrary hydrogen atoms of the phenyl group may be substituted with a halogen atom, a methyl group, a methoxy group, a trifluoromethyl group, or a trifluoromethoxy group), a methyl group, a methoxy group, A trifluoromethyl group or a trifluoromethoxy group is preferred.
- X 101 and X 102 in the general formulas (Ra), (Rb), (Rc), (Rf), (Rg), and (Rh) are each independently a phenyl group (1 of the phenyl group).
- the hydrogen atom or two or more arbitrary hydrogen atoms may be substituted with a halogen atom, a methyl group, a methoxy group, a trifluoromethyl group, or a trifluoromethoxy group, and more preferably an unsubstituted phenyl group. .
- X 101 in the general formula (Rk) is more preferably a halogen atom, a cyano group, an alkyl group, an alkoxy group, a trifluoromethyl group, or a trifluoromethoxy group, and a halogen atom, a methyl group, or a trifluoromethyl group. Or a trifluoromethoxy group is more preferable.
- Q is a divalent hydrocarbon group.
- the divalent hydrocarbon group may be linear, branched, or a group having a cyclic structure.
- the number of carbon atoms of the divalent hydrocarbon group is preferably 1 to 16, more preferably 1 to 10, and further preferably 1 to 6.
- the divalent hydrocarbon group is preferably a group that single-bonds with two oxygen atoms in the general formulas (Re) and (Rj) at one carbon atom.
- two carbon atoms marked with an asterisk, two oxygen atoms bonded to them, and one carbon atom in Q are each a 5-membered ring. Is forming.
- Specific examples include an unsubstituted methylene group, a cyclopropylidene group, a cyclobutylidene group, a cyclopentylidene group, a cyclohexylidene group, or the like, in which one or two hydrogen atoms are substituted by a hydrocarbon group. More preferred are a methylene group, an isopropylidene group, and a cyclohexylidene group.
- n 12 is an integer of 0 to 5
- X 101 is a phenyl group (any one or two or more arbitrary phenyl groups).
- the hydrogen atom may be substituted with a halogen atom, a methyl group, a methoxy group, a trifluoromethyl group, or a trifluoromethoxy group.
- R 103 is an unsubstituted straight chain having 1 to 6 carbon atoms Or, a group which is a branched alkyl group is preferable, n 12 is an integer of 0 to 5, X 101 is an unsubstituted phenyl group, and R 103 is an unsubstituted straight chain having 1 to 6 carbon atoms.
- a group that is a linear or branched alkyl group is more preferred.
- n 12 is an integer of 0 to 5
- n 13 is 0 or 1
- X 103 is a halogen atom, a methyl group, or A group which is a trifluoromethyl group and R 103 is an unsubstituted linear alkyl group having 2 to 12 carbon atoms is preferred.
- R 100 or R 101 of the compound represented by the general formula (Ch-I) in particular, the following formulas (Ra-1) to (Ra-3) or the general formulas (Rf-1) to (Rf-3) The group represented by these is preferable.
- R 100 or R 101 is these groups, the left end is bonded to A 100 (or D, Z 101 ) or A 101 (or D, Z 100 ), respectively.
- An asterisk represents a chiral carbon atom.
- n 13 represents 0 or 1.
- n represents an integer of 2 to 12.
- n is preferably an integer of 3 to 8, and more preferably 4, 5 or 6.
- R 100 or R 101 in the general formula (Ch-I) is a polymerizable group
- the polymerizable group is represented by any of the following formulas (R-1) to (R-16): Groups having a structure are preferred.
- the groups represented by formulas (R-1) to (R-14) and (R-16) are at the right end, and the group represented by formula (R-15) is at the left end with A 100 (or D, Z 101 ) or A 101 (or D, Z 100 ), respectively.
- These polymerizable groups are cured by radical polymerization, radical addition polymerization, cationic polymerization, or anionic polymerization.
- the formula (R-1), formula (R-2), formula (R-4), formula (R-5), formula (R-7), formula (R ⁇ 11), the formula (R-13), the formula (R-15) or the group represented by the formula (R-16) are preferable, and the formula (R-1), the formula (R-2), the formula (R— 7), a group represented by formula (R-11), formula (R-13) or formula (R-16) is more preferred, and formula (R-1), formula (R-2) or formula (R— The group represented by 16) is more preferable.
- R 100 or R 101 in the general formula (Ch-I) is a chiral group including a ring structure
- the ring structure included in the group may be aromatic or aliphatic.
- the ring structure that the alkyl group can take include a monocyclic structure, a condensed ring structure, and a spirocyclic ring structure, and can include one or more heteroatoms.
- Z 100 and Z 101 are each independently —O—, —S—, —CO—, —COO—, —OCO—, —O—COO—, —CO—N.
- R 105 represents a linear or branched alkyl group having 1 to 12 carbon atoms, preferably a linear or branched alkyl group having 1 to 6 carbon atoms, 1-3 linear alkyl groups are more preferred.
- m 11 is an integer of 2 or more and a plurality of Z 100 are present in one molecule, they may be the same or different.
- m 12 is an integer of 2 or more and a plurality of Z 101 are present in one molecule, they may be the same or different.
- a 100 and A 101 are each independently the following (a ′) group, (b ′) group, or (c ′) group.
- m 11 is an integer of 2 or more and a plurality of A 100 are present in one molecule, they may be the same or different.
- m 12 is an integer of 2 or more and a plurality of A 101 are present in one molecule, they may be the same or different.
- a ′ trans-1,4-cyclohexylene group (one methylene group present in the group or two or more methylene groups not adjacent to each other may be substituted with an oxygen atom or a sulfur atom) Good.
- B ′ 1,4-phenylene group (one —CH ⁇ present in this group or two or more non-adjacent —CH ⁇ may be substituted with a nitrogen atom).
- the (a ′) group, (b ′) group, and (c ′) group may be all unsubstituted, and one or two or more hydrogen atoms in the group are halogen atoms, cyano A group, a nitro group, an alkyl group having 1 to 7 carbon atoms (one or more hydrogen atoms in the alkyl group may be substituted by a fluorine atom or a chlorine atom), 1 carbon atom
- An alkoxy group of 1 to 7 one or more hydrogen atoms in the alkoxy group may be substituted with a fluorine atom or a chlorine atom
- an alkylcarbonyl group of 1 to 7 carbon atoms (the alkyl 1 or 2 or more hydrogen atoms in the carbonyl group may be substituted with a fluorine atom or a chlorine atom)
- the (a ′) group or the (b ′) group is preferable, and an unsubstituted trans-1,4-cyclohexylene group
- An unsubstituted 1,4-phenylene group, one or more hydrogen atoms are fluorine atoms, chlorine atoms, cyano groups, alkyl groups having 1 to 4 carbon atoms, alkoxy groups having 1 to 4 carbon atoms, A trans-1,4-cyclohexylene group substituted by an alkylcarbonyl group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 1 to 4 carbon atoms, or one or more hydrogen atoms; Fluorine atom, chlorine atom, cyano group, alkyl group having 1 to 4 carbon atoms, alkoxy group having 1 to 4 carbon atoms, alkylcarbonyl group having 1 to 4 carbon atoms, or alkoxy having 1 to 4 carbon atoms
- n 11 represents 0 or 1.
- n 11 When n 11 is 0, m 12 is 0 and m 11 is 0, 1, 2, 3, 4 or 5. When n 11 and m 12 are 0, m 11 is preferably 1, 2, 3, or 4, and more preferably 1, 2, or 3.
- n 11 is 1, m 11 and m 12 are each independently 0, 1, 2, 3, 4 or 5, preferably 1, 2, 3, or 4, more preferably 1, 2 or 3. .
- n 11 is 1, m 11 and m 12 may be different from each other, but are preferably the same.
- D is a divalent group represented by the above formulas (D1) to (D4).
- each of them is bound to Z 101 (or R 100 ) or Z 101 (or R 100 ) at the part marked with a black circle.
- any one or two or more arbitrary hydrogen atoms of the benzene ring are each independently a halogen atom (F, Cl, Br, I), carbon It may be substituted with an alkyl group having 1 to 20 atoms or an alkoxy group having 1 to 20 carbon atoms.
- one or more hydrogen atoms in the group may be substituted with a fluorine atom
- One or more methylene groups in the group are —O—, —S—, —COO—, —OCO—, —CF 2 —, —CF ⁇ CH—, —CH ⁇ CF—, —CF
- An oxygen atom or a sulfur atom may be substituted by ⁇ CF— or —C ⁇ C— so that they are not directly bonded to each other.
- the remaining partial structure excluding R 100 and R 101 at both ends of the compound has the following general formula (b1)
- a structure represented by (b13) is preferred.
- either one of both ends is bonded to R 100 and the other is bonded to R 101 .
- at least one of R 100 and R 101 is a chiral alkyl group.
- Z 102 is the same as Z 100 and Z 101 in the general formula (Ch-I).
- a 102 represents a 1,4-phenylene group (one —CH ⁇ present in the group or two or more —CH ⁇ not adjacent to each other)
- a nitrogen atom may be substituted, and one or more arbitrary hydrogen atoms present in the group are substituted by a halogen atom, a methyl group, a methoxy group, a trifluoromethyl group, or a trifluoromethoxy group It may be done.
- —CH ⁇ or a hydrogen atom in the 1,4-phenylene group it is possible to control the decrease in crystallinity and the direction and magnitude of dielectric anisotropy of a liquid crystal composition containing the compound.
- a compound in which the ring structure in A 102 is a heterocyclic ring such as a pyridine ring or a pyrimidine ring (that is, one —CH ⁇ present in a 1,4-phenylene group or not adjacent 2
- a compound that is a benzene ring rather than a compound in which more than one —CH ⁇ is a group substituted with a nitrogen atom that is, —CH ⁇ present in a 1,4-phenylene group is not substituted with a nitrogen atom
- the compound which is a group is preferred.
- a compound in which the ring structure in A 102 is a heterocyclic ring such as a pyridine ring or a pyrimidine ring is preferable to a compound in which the ring structure in A 102 is a benzene ring.
- a compound having a hydrocarbon ring such as a benzene ring or a cyclohexane ring has a relatively small polarizability, but a compound having a heterocyclic ring such as a pyridine ring or a pyrimidine ring has a relatively polarizability of the compound. It is large and preferable for decreasing the crystallinity and stabilizing the liquid crystallinity.
- the compounds having n 11 and m 12 of 0 are preferably the following general formulas (Ch-I-1) to (Ch-I-30).
- R 100, R 101 and Z 100 represents the same meaning as R 100, R 101 and Z 100 in the general formula (Ch-I)
- R 100 and R 101 each represents a chiral alkyl group
- L 100 to L 105 each independently represents a hydrogen atom or a fluorine atom
- L 100 to L 105 each independently represents a hydrogen atom or a fluorine atom. Represents an atom.
- R 100 and R 101 are represented by any one of the general formulas (Ra) to (Rk). And one or both of R 100 and R 101 are represented by the formulas (Ra-1) to (Ra-3) or the general formulas (Rf-1) to (Rf-3).
- the compound which is group is more preferable.
- the remaining one of R 100 and R 101 has 1 to 1 carbon atoms.
- achiral alkyl groups (one or more non-adjacent methylene groups in the alkyl group are -O-, -S-, -NH-, -N (CH 3 )-, -CO —, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S—, —CH ⁇ CH—, —CF 2 —, —CF ⁇ CH—, —CH ⁇ CF—. , —CF ⁇ CF— or C ⁇ C—, and one or more hydrogen atoms in the alkyl group may be substituted by a halogen atom or a cyano group.
- Certain compounds are preferred, an alkyl group having 1 to 16 carbon atoms, and 1 to 6 alkoxy group, more preferred compounds are alkenyl groups or alkenyloxy group having 2 to 16 carbon atoms of 2 to 16 carbon atoms.
- the liquid crystal composition of the present invention preferably contains at least one compound represented by any one of the general formulas (Ch-I-1) to (Ch-I-30). More preferably, it contains a compound represented by -I-30).
- Specific examples of the compound represented by the general formula (Ch-I-30) include the following general formulas (Ch-I-30-1) to (Ch-I-30-6) (wherein n 13 Represents 0 or 1, n represents an integer of 2 to 12, R 102 represents an alkyl group having 1 to 16 carbon atoms, an alkoxy group having 1 to 16 carbon atoms, an alkenyl group having 2 to 16 carbon atoms, or Represents an alkenyloxy group having 2 to 16 carbon atoms.).
- R 102 represents an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or 2 carbon atoms.
- An alkenyl group having 6 to 6 carbon atoms or an alkenyloxy group having 2 to 6 carbon atoms is preferable.
- the compound represented by the general formula (Ch-I) has a structure having an asymmetric carbon in the ring structure portion.
- a compound in which D is the formula (D2) or (D4) is preferable, and a compound in which D is the formula (D4) is more preferable.
- D is the formula (D2)
- compounds represented by the following general formulas (K2-1) to (K2-8) are preferable.
- the compound in which D is the formula (D4) the following general formula ( Compounds represented by K3-1) to (K3-6) are preferred.
- R K is independently the same as R 100 and R 101 in formula (Ch-I). Represents meaning.
- HTP ( ⁇ ) chiral compound used in the liquid crystal composition of the present invention include compounds represented by the general formulas (K2-1) to (K2-8) or (K3-1) to (K3-6).
- R K each independently represents a chiral or achiral alkyl group having 1 to 30 carbon atoms (one or more non-adjacent methylene groups in the alkyl group are —O—, —S —, —NH—, —N (CH 3 ) —, —CO—, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S—, —CH ⁇ CH—, One or more hydrogen atoms in the alkyl group may be substituted by —CF 2 —, —CF ⁇ CH—, —CH ⁇ CF—, —CF ⁇ CF— or C ⁇ C— , Optionally substituted by a halogen atom or a cyano group).
- the compound is an alkyl group having 1 to 16 carbon atoms, an alkoxy group having 1 to 16 carbon atoms, an alkenyl group having 2 to 16 carbon atoms, or an alkenyloxy group having 2 to 16 carbon atoms. More preferred are compounds having 10 alkyl groups, alkoxy groups having 3 to 9 carbon atoms, alkenyl groups having 3 to 10 carbon atoms, or alkenyloxy groups having 3 to 9 carbon atoms.
- the axially asymmetric compound is preferably a compound represented by the general formula (IV-1), (IV-2), (IV-3) or (IV-4).
- R 71 and R 72 each independently represent a hydrogen atom, a halogen atom, a cyano group, an isocyanate group, an isothiocyanate group, or 1 carbon atom.
- any one or two or more hydrogen atoms in the alkyl group may be substituted with a halogen atom.
- R 71 and R 72 are each independently an unsubstituted or optionally substituted carbon atom number. It is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an unsubstituted alkyl group having 1 to 20 carbon atoms, and further preferably an unsubstituted alkyl group having 1 to 6 carbon atoms.
- a 71 and A 72 are each independently an aromatic or non-aromatic 3, 6 to 8 membered ring, or 9 carbon atoms
- the above condensed ring is represented. Any one or more hydrogen atoms in these ring structures may be substituted with a halogen atom, an alkyl group having 1 to 3 carbon atoms, or a haloalkyl group having 1 to 3 carbon atoms. Further, any one or two or more methylene groups not adjacent to each other in the ring structure may be substituted with —O—, —S—, or —NH—. Any one or two or more —CH ⁇ that are not adjacent to each other may be substituted with —N ⁇ .
- n 71 is 2 or more and a plurality of A 71 are present in one molecule, they may be the same as or different from each other.
- m 72 is 2 or more and a plurality of A 72 are present in one molecule, they may be the same as or different from each other.
- a 71 and A 72 are each independently 1,4-phenylene group, trans-1,4-cyclohexylene group, Pyridine-2,5-diyl group, pyrimidine-2,5-diyl group and naphthalene-2,6-diyl group are preferred.
- a group in which one or two or more hydrogen atoms in these groups are substituted with a halogen atom, an alkyl group having 1 to 3 carbon atoms, or a haloalkyl group having 1 to 3 carbon atoms is also preferable.
- 1,4-phenylene group in which one or two or more hydrogen atoms may be substituted with fluorine atoms, or trans-1,4-cyclohexylene group is more preferable, and unsubstituted 1,4-phenylene.
- a group or an unsubstituted trans-1,4-cyclohexylene group is more preferable.
- any one or two or more hydrogen atoms in the alkylene group may be substituted with a halogen atom.
- m 71 is 2 or more and a plurality of Z 71 are present in one molecule, they may be the same as or different from each other.
- m 72 is 2 or more and a plurality of Z 72 are present in one molecule, they may be the same as or different from each other.
- Z 71 and Z 72 are each independently a single bond, an unsubstituted alkylene group having 1 to 4 carbon atoms, —COO —, —OCO—, —CH ⁇ CH—, or —C ⁇ C— are preferred, and a single bond, —CH 2 —, —CH 2 CH 2 —, —COO—, —OCO—, —CH ⁇ CH—, Alternatively, —C ⁇ C— is more preferable, and a single bond, —COO—, or —OCO— is more preferable.
- X 71 and X 72 are each independently a single bond, —COO—, —OCO—, —CH 2 O—, —OCH 2 —, — CF 2 O—, —OCF 2 —, or —CH 2 CH 2 — is represented.
- X 71 and X 72 are each independently a single bond, —COO—, —OCO—, —CH 2 O—, —OCH 2 — or —CH 2 CH 2 — is preferable, and a single bond, —COO—, or —OCO— is more preferable.
- R 73 represents a hydrogen atom, a halogen atom, or —X 71 — (A 71 —Z 71 ) m 71 —R 71 .
- m 71 and m 72 each independently represents an integer of 1 to 4.
- R 73 is —X 71 — (A 71 —Z 71 ) m 71 —R 71
- m 71 and m 72 are each independently preferably 2 or 3, and more preferably 2.
- the chiral agent may be right-handed or left-handed, and may be properly used depending on the configuration of the liquid crystal display element.
- R 01 , R 02 , R 03 and R 04 are each independently preferably an alkyl group having 1 to 5 carbon atoms, and an alkoxy group having 1 to 5 carbon atoms.
- An alkenyl group having 2 to 5 carbon atoms is preferred, an alkenyloxy group having 2 to 5 carbon atoms is preferred, an alkyl group having 1 to 5 carbon atoms is more preferred, and an alkoxy group having 1 to 3 carbon atoms is preferred. More preferred are alkenyl groups having 2 to 3 carbon atoms, and even more preferred are alkenyloxy groups having 2 to 3 carbon atoms.
- n 01 and n 02 each independently represents 0 or 1, but n 01 is 0 when it is desired to obtain a faster response speed by reducing ⁇ 1. Is preferred.
- the compound represented by the general formula (np01) and n 01 represents 0, the general formula (II-11) or the general formula (II-12)
- R V and R V1 each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, but an alkyl group or carbon having 1 to 5 carbon atoms An alkenyl group having 2 to 5 atoms is preferable, and an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is preferable. Note that one of these alkyl groups or alkenyl groups or two or more non-adjacent —CH 2 — may be substituted with an oxygen atom.
- the compound represented by the general formula (II-11) and / or the general formula (II-12) is preferably, for example, the general formula (II-101) to (II-110), and the general formula (II-103) Or general formula (II-108) is particularly preferred.
- the content of the compounds represented by the general formulas (II-11) and (II-12) is preferably 10 to 80% by mass. In the case where emphasis is placed on the suppression, the content is preferably 5 to 40% by mass. In the case where high voltage holding ratio (VHR) is important, it is preferable to contain 1 to 30% by mass of the compounds represented by general formula (II-11) and general formula (II-12). The content is preferably 20% by mass, and preferably 1 to 10% by mass. In order to obtain a higher voltage holding ratio (VHR), it is preferable to contain 1 to 15% by mass of the compound represented by the general formula (II-108).
- n 01 represents 0
- R 01 is an alkyl group having 1 to 10 carbon atoms
- R 02 is a carbon atom
- R 01 is preferably an alkyl group having 1 to 5 carbon atoms
- R 01 is more preferably an alkyl group having a carbon number of 2 ⁇ 5
- R 02 is an alkyl group or a number of carbon atoms of 1 to 5 carbon atoms
- An alkoxy group having 1 to 4 is preferable
- R 02 is preferably an alkyl group having 2 to 5 carbon atoms, which is suitable for achieving both a high VHR and a high response speed.
- np01 the formula (L-4.1) to the formula (L-4.10)
- a compound selected from the group of compounds represented by formula (L-3.1), formula (L-3.2), formula (L-3.4) or compound represented by formula (L-3.6) is preferred. Is more preferable, and when the high response speed and high VHR are emphasized, the formula (L-3.1) or the formula (L-3.2) is particularly preferable. When importance is attached to a large elastic constant, the formula (L-3.4) is preferable.
- a compound represented by the formula (L-5.1) or a formula (L-5.2) is more preferred.
- the liquid crystal composition of the present invention further has the general formula (III-1) and / or the general formula (III-2).
- R 31 to R 34 are each independently 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 2 to 10 carbon atoms.
- R 31 1 one -CH present in R 34 2 - substituted each independently -O- or -S- - or nonadjacent two or more -CH 2
- R 31 and R 33 are Preferably, each independently 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, Alkyl or alkenyl group having a carbon number of 2 to 5 of 5 more preferably from more preferably an alkyl group or an alkenyl group having a carbon number of 2 to 3 having one to three carbon atoms, R 32 and R 34 are each Independently, an alkyl group having 1 to 5 carbon atoms, an alkoxyl group having 1 to 5 carbon
- Ring A 32 , Ring B 31 and Ring B 32 are each independently trans-1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro- 1,4-phenylene group, 3,5-difluoro-1,4-phenylene group, 2,3-difluoro-1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo [2.
- Z 31 and Z 32 are each independently —OCH 2 —, —CH 2 O—, —CF 2 O—, —OCF 2 —, —CH 2 CH 2 —, —CF 2 CF 2 — or a single bond represents a, -CH 2 O -, - CF 2 O -, - CH 2 CH 2 -, - CF 2 CF 2 - or a single bond are preferred, -CH 2 O -, - CH 2 CH 2 - or a single bond Is more preferable, and —CH 2 O— or a single bond is particularly preferable.
- the compound represented by the general formula (III-1) is preferably a compound represented by the following general formula (III-A1) to general formula (III-A4).
- a compound represented by (III-A1) is preferred, a compound represented by general formula (III-A3) is preferred, and a compound represented by general formula (III-A4) is preferred.
- the compound represented by the general formula (III-A1) is more preferable, the compound represented by the general formula (III-A3) is further preferable, and the compound represented by the general formula (III-A1) is preferable. Particularly preferred is a compound.
- R 31 and R 32 represent the same meaning as described above.
- the compound represented by the general formula (III-2) is preferably a compound represented by the following general formula (III-B1) to general formula (III-B6).
- a compound represented by (III-B1) is preferred, a compound represented by general formula (III-B3) is preferred, and a compound represented by general formula (III-B4) is preferred.
- a compound represented by general formula (III-B5) is preferable, a compound represented by general formula (III-B6) is preferable, and a compound represented by general formula (III-B1) is preferable.
- compounds of the general formula (III-B3) are more preferred, compounds of the general formula (III-B5) are more preferred, and compounds of the general formula (III-B6) are more preferred.
- Good Properly, particularly preferably a compound represented by formula (III-B1) it is particularly preferably a compound represented by formula (III-B5).
- R 33 and R 34 have the same meaning as described above.
- the liquid crystal composition of the present invention preferably comprises a combination of the general formula (III-A1) and the general formula (III-B1), and the general formula (III-A1), the general formula (III-B1) and the general formula ( III-B4) is more preferable, and a combination of general formula (III-A1), general formula (III-B1) and general formula (III-B5) is more preferable.
- the liquid crystal composition of the present invention preferably comprises a combination of the general formula (III-A3) and the general formula (III-B5), and the general formula (III-A3), the general formula (III-B4) and the general formula ( More preferably, it consists of a combination of III-B5), more preferably a combination of general formula (III-A3), general formula (III-B5) and general formula (III-B1).
- the liquid crystal composition of the present invention preferably comprises a combination of the general formula (III-A4) and the general formula (III-B1), and the general formula (III-A4), the general formula (III-A1) and the general formula ( III-B1), more preferably a combination of general formula (III-A4) and general formula (III-B5), and general formula (III-A4) and general formula (III-B5).
- the general formula (III-B4) preferably the combination of the general formula (III-A4) and the general formula (III-B1), and the general formula (III-A4) and the general formula More preferably, it comprises a combination of (III-B1) and general formula (III-B5).
- the liquid crystal composition of the present invention has the general formula (III-B7) as the compound of the general formula (III-2).
- the liquid crystal composition of the present invention contains one or more compounds represented by general formula (III-1) and / or general formula (III-2), but may contain 2 to 10 compounds. preferable.
- the content is 10 to 90% by mass, but the lower limit is preferably 10% by mass, preferably 15% by mass, preferably 20% by mass, preferably 25% by mass, preferably 30% by mass, and 35% by mass.
- 40 mass% is preferable
- 45 mass% is preferable
- the upper limit thereof is preferably 80 mass%, preferably 75 mass%, preferably 70 mass%, preferably 65 mass%, preferably 60 mass%, 55 mass% Is preferable, 50 mass% is preferable, and 45 mass% is preferable.
- the liquid crystal composition of the present invention includes, as other components, general formula (IV-A) to general formula (IV-J).
- R 41 and R 42 are each independently an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or 2 to 5 carbon atoms.
- the alkenyloxy group is preferably an alkyl group having 2 to 5 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.
- X 41 represents an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, a fluorine atom or a hydrogen atom, preferably a methyl group, a fluorine atom or a hydrogen atom, More preferably, it is an atom.
- R 41 and R 42 are each independently from 2 carbon atoms. It may be an alkenyl group having 5 or an alkenyloxy group having 2 to 5 carbon atoms.
- the content of the compound selected from the group of compounds represented by general formula (IV-A) to general formula (IV-J) is 1% by mass to 60% by mass, preferably 5% by mass to 50% by mass. 5 mass% to 40 mass% is preferable, 10 mass% to 40 mass% is preferable, and 10 mass% to 30 mass% is preferable.
- the liquid crystal composition of the present invention can further contain one or more compounds represented by the general formula (V).
- R 61 and R 62 are each independently an alkyl group having 1 to 8 carbon atoms, an alkoxyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkyl group having 2 to 8 carbon atoms.
- an alkenyloxyl group is represented, an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms is preferable.
- the liquid crystal composition of the present invention may contain one or more compounds represented by the general formula (N-001).
- R N1 and R N2 are each independently an alkyl group having 1 to 8 carbon atoms, an alkoxyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkyl group having 2 to 8 carbon atoms.
- An alkenyloxyl group is represented, but an alkyl group having 1 to 5 carbon atoms is preferred.
- L 1 and L 2 each independently represent a hydrogen atom, a fluorine atom, CH 3 or CF 3 , but at least one of L 1 and L 2 is preferably a fluorine atom, and both are fluorine atoms. It is also preferable that there is.
- the compound represented by the general formula (IV-I), the general formula (V) or the general formula (N-001) is suitable for obtaining a liquid crystal composition having a large ⁇ n, and further the reaction rate of the polymerizable compound. This is very useful because it is expected to have an effect of accelerating.
- the liquid crystal composition of the present invention may contain one or more compounds represented by general formula (VIII-a), general formula (VIII-c) or general formula (VIII-d).
- 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 alkoxyl group having 1 to 5 carbon atoms
- X 51 and X 52 each independently represents a fluorine atom or a hydrogen atom, and at least one of X 51 and X 52 is a fluorine atom.
- the liquid crystal composition of the present invention may contain one or more compounds represented by formulas (V-9.1) to (V-9.3).
- the liquid crystal composition of the present invention contains a polymerizable compound, but has the general formula (I-1)
- n 11 and n 12 each independently represent an integer of 0 to 3, but n 11 + n 12 is an integer of 1 to 6, and the same when a plurality of R 11 or Z are present. It can be different.
- n 11 + n 12 is preferably an integer of 1 to 5, preferably an integer of 1 to 4, preferably an integer of 1 to 3, and more preferably an integer of 2 to 3.
- Z represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxyl group having 1 to 12 carbon atoms, or R 12, and preferably represents R 12 .
- R 11 is P 11 -S 11 - represents
- R 12 is P 12 -S 12 - represents
- P 11 and P 12 are, each independently, formula from the formula (R-1) (R- 15)
- each of S 11 and S 12 independently represents a single bond or an alkylene group having 1 to 15 carbon atoms, and one or more of —CH 2 — in the alkylene group is an oxygen atom It may be substituted with —O—, —OCO— or —COO— so as not to be directly adjacent to each other, but is preferably a single bond or an alkylene group having 1 to 6 carbon atoms, and more preferably a single bond.
- the alkylene group is preferably an alkylene group having 1 to 6 carbon atoms, more preferably an alkylene group having 1 to 3 carbon atoms, and 1 to 2 carbon atoms. It is more preferable that one or more —CH 2 — in the alkylene group is substituted with —O—, —OCO— or —COO— so that the oxygen atom is not directly adjacent to the alkylene group. May be. Further, of the S 11 and S 12 present, at least one is a single bond, it is preferable that all of the S 11 and S 12 are present is a single bond.
- M 11 and M 12 are each independently 1,4-phenylene group, benzene-1,2,4-triyl group, benzene-1,2,4,6-tetrayl group, 1,4-cyclohexene.
- the alkoxyl group is preferably an alkoxyl group having 1 to 6 carbon atoms, preferably an alkoxyl group having 1 to 5 carbon atoms, preferably an alkoxyl group having 1 to 4 carbon atoms, An alkoxyl group having 1 to 3 atoms is preferable, an alkoxyl group having 1 to 2 carbon atoms is preferable, and an alkoxyl group having 1 carbon atom is particularly preferable.
- m 11 represents an integer of 0 to 4, and when a plurality of L 11 and M 12 are present, they may be the same or different.
- m 11 is preferably from 1 to 3 of an integer, preferably m 11 is an integer from 2 to 4 in the case of emphasizing the polymerization rate, when emphasizing compatibility with the liquid crystal composition M 11 is preferably an integer of 0 to 2. Therefore, m 11 is particularly preferably 2 in order to satisfy both the polymerization rate and the compatibility.
- polymerizable compound represented by the general formula (I-1) include the following general formulas (I-11-01) to (I-11-10), (I-12-01) To (I-12-06), general formulas (I-13-01) to (I-13-06), general formulas (I-21-01) to (I-21-17), general formula (I- And compounds represented by general formulas (I-A01) to (I-A09).
- each of R M1 , R M2 and R M3 independently represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxyl group having 1 to 5 carbon atoms, or a formula (R-1) to a formula (R -15), each independently preferably a hydrogen atom, an alkoxyl group having 1 to 3 carbon atoms, or any one of formulas (R-1) to (R-5), It is preferably independently a hydrogen atom, an alkoxyl group having 1 to 3 carbon atoms, or any one of formulas (R-1) to (R-2).
- R M1 , R M2 and R M3 is any one of formula (R-1) to formula (R-15), and at least two of formulas (R-1) to formula (R— 15) is more preferable, and at least three are more preferably any of formula (R-1) to formula (R-15).
- the polymerizable compound represented by the general formula (I-1) has a mesogenic structure having one or more rings as shown in the above-described structure, and has an alkoxyl group at one position.
- it is characterized by having one or more polymerizable groups. More specifically, in addition to the above-described features, one of the mesogenic structures may have a fluorine group.
- the polymerizable compound represented by the general formula (I-1) a compound represented by the general formula (I-21) or (I-22) is also suitable.
- R 101 to R 106 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxyl group having 1 to 12 carbon atoms, or a group represented by formula (R-1) to formula (R-15). Or a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or any one of formulas (R-1) to (R-5) is preferable. Or a formula (R-2).
- R 101 to R 106 are each independently of the formula (R-1) or the formula (R-2), and R 101 to R 106 It is preferable that three or four of each independently represent formula (R-1) or formula (R-2), and three of R 101 to R 106 each independently represent formula (R -1) or formula (R-2).
- a 11 and B 11 are each independently 1,4-phenylene group, 1,4-cyclohexylene group, naphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6- Represents a diyl group, but the group may be unsubstituted or substituted with an alkyl group having 1 to 3 carbon atoms, an alkoxyl group having 1 to 3 carbon atoms, or a halogen, It is preferably an alkyl group-substituted or fluorine group-substituted 1,4-phenylene group or naphthalene-2,6-diyl group, preferably an unsubstituted or fluorine group-substituted 1,4-phenylene group.
- R 101 to R 106 when none of R 101 to R 106 is an alkoxyl group, at least one of A 11 and B 11 is substituted with an alkoxyl group having 1 to 5 carbon atoms.
- a 11 and B 11 are not an alkoxyl group having 1 to 5 carbon atoms, at least one of R 101 to R 106 represents an alkoxyl group having 1 to 5 carbon atoms.
- the alkoxyl group is preferably an alkoxyl group having 1 to 4 carbon atoms, preferably an alkoxyl group having 1 to 3 carbon atoms, and preferably an alkoxyl group having 1 to 2 carbon atoms. Particularly preferred is an alkoxyl group having 1 carbon atom.
- the compound represented by the general formula (I-21) or (I-22) has at least one alkoxyl group.
- L 13 represents a single bond, —OCH 2 —, —CH 2 O—, —C 2 H 4 —, —COO—, —OCO—, —CH ⁇ CR a —COO—, —CH ⁇ CR a —OCO—.
- each R a is independently a hydrogen atom or a carbon number of 1 to Represents an alkyl group of 3, wherein z represents an integer of 1 to 4, and represents a single bond, —OCH 2 —, —CH 2 O—, —C 2 H 4 —, —COO—.
- R M1 , R M2 and R M3 are as described above.
- the liquid crystal composition of the present invention has the general formula (I-31) and the general formula (I-32).
- a polymerizable compound represented by the formula However, the compound represented by the general formula (I-1) is excluded.
- R 107 is P 107 -S 107 - represents
- R 110 is P 110 -S 110 - represents
- P 107 and P 110 are each independently formula from the formula (R-1) (R -15)
- S 107 and S 110 each independently represents a single bond or an alkylene group having 1 to 15 carbon atoms, and one or more —CH 2 — in the alkylene group May be substituted with —O—, —OCO— or —COO— so that the oxygen atoms are not directly adjacent to each other, but may be a single bond or an alkylene group having 1 to 6 carbon atoms (one or two of the alkylene groups).
- R 108 , R 109 , R 111, and R 112 are each independently formula (R-1) to formula (R-15), an alkyl group having 1 to 3 carbon atoms, or 1 to 3 carbon atoms.
- a 12 represents 1,4-phenylene group, 1,4-cyclohexylene group, pyridine-2,5-diyl group, pyrimidine-2,5-diyl Group, naphthalene-2,6-diyl group, indan-2,5-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or 1,3-dioxane-2,5-diyl group
- the group may be unsubstituted or substituted with an alkyl group having 1 to 12 carbon atoms, a halogen, a cyano group, or a nitro group
- L 14 is a single bond, —OCH 2 —, —CH 2 O—, —C 2 H 4 —, —COO—, —OCO—, —CH ⁇ CR a —COO—, —CH ⁇
- a compound represented by the formula (XX-1) to the general formula (XX-10) is preferable, and the compound represented by the formula (XX-1) to the formula (XX-4) is preferable. Is more preferable.
- 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 1,4-phenylene group is further —F, —Cl, —CF 3 , —CH 3 , formula (R-1) To any one of formulas (R-15).
- polymerizable compounds such as the formula (M31) to the formula (M48) are preferable.
- polymerizable compounds such as formula (M301) to formula (M316) are also preferable.
- the hydrogen atoms in the 1,4-phenylene group and naphthalene group in the formulas (M301) to (M316) may be further substituted with —F, —Cl, —CF 3 , or —CH 3 .
- polymerizable compounds such as formula (Ia-1) to formula (Ia-31) may be used.
- the liquid crystal composition of the present invention includes a polymerizable compound represented by formula (XX-2), formula (XX-4), formula (M31), formula (M-302) or (Ia-31) or a similar compound thereof It is more preferable to use a polymerizable compound having a molecular structure of
- the liquid crystal composition of the present invention contains 0.01 to 5% by mass of a polymerizable compound, but the lower limit of the content is preferably 0.02% by mass, preferably 0.03% by mass, and 0.04% by mass.
- 0.05 mass% is preferable, 0.06 mass% is preferable, 0.07 mass% is preferable, 0.08 mass% is preferable, 0.09 mass% is preferable, 0.1 mass% is preferable, 0.15% by mass is preferable, 0.2% by mass is preferable, 0.25% by mass is preferable, 0.3% by mass is preferable, 0.35% by mass is preferable, 0.4% by mass is preferable, and 5 mass% is preferable, 0.55 mass% is preferable, and the upper limit of the content is preferably 4.5 mass%, preferably 4 mass%, preferably 3.5 mass%, preferably 3 mass%, 2.5 % By weight is preferred, 2% by weight is preferred, 1.5% % By weight is preferred, 1% by weight is preferred, 0.95% by weight is preferred, 0.9% by weight is preferred, 0.85% by weight is preferred, 0.8% by weight is preferred and 0.75% by weight is preferred.
- the content is preferably 0.2 to 0.6% by mass, but importance is placed on suppression of precipitation at low temperatures. In that case, the content is preferably 0.1 to 0.4% by mass.
- the liquid crystal composition of the present invention may contain a normal nematic liquid crystal, smectic liquid crystal, cholesteric liquid crystal, antioxidant, ultraviolet absorber, light stabilizer or infrared absorber in addition to the above-mentioned compounds.
- antioxidant used in the liquid crystal composition of the present invention examples include hindered phenols represented by general formula (H-1) to general formula (H-4).
- R H1 represents 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 It represents an alkenyloxy group having 2 to 10 carbon atoms, one -CH 2 present in the radical - or non-adjacent two or more -CH 2 - are each independently -O- or -S- In addition, one or two or more hydrogen atoms present in the group may be independently substituted with a fluorine atom or a chlorine atom.
- alkyl group having 2 to 7 carbon atoms an alkoxyl group having 2 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkenyloxy group having 2 to 7 carbon atoms.
- An alkyl group having 3 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms is more preferable.
- M H4 is -CH 2 1, two or more of the alkylene group (the alkylene group having from 1 to 15 carbon atoms - as the oxygen atoms are not directly adjacent, - O—, —CO—, —COO—, —OCO— may be substituted.), —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—, a single bond, a 1,4-phenylene group (any hydrogen atom in the 1,4-phenylene group may be substituted with a fluorine atom) or a trans-1,4-cyclohexylene group.
- an alkylene group having 1 to 14 carbon atoms In consideration of the viscosity, a large number of carbon atoms is preferable, but in consideration of the viscosity, the number of carbon atoms is preferably not too large. Therefore, the number of carbon atoms is more preferably 2 to 12, more preferably 3 to 10. 4 to 10 carbon atoms are more preferred, 5 to 10 carbon atoms are more preferred, and 6 to 10 carbon atoms are more preferred.
- one or more non-adjacent —CH ⁇ in the 1,4-phenylene group may be substituted by —N ⁇ .
- each hydrogen atom in the 1,4-phenylene group may be independently substituted with a fluorine atom or a chlorine atom.
- each hydrogen atom in the 1,4-cyclohexylene group may be independently substituted with a fluorine atom or a chlorine atom.
- the content is preferably 10 ppm by mass or more, preferably 20 ppm by mass or more, and more preferably 50 ppm by mass or more.
- the upper limit in the case of containing an antioxidant is 10000 mass ppm, preferably 1000 mass ppm, preferably 500 mass ppm, preferably 200 mass ppm, and preferably 100 mass ppm.
- HALS such as generally available Tinuvin 770 and LA-57.
- the content is preferably adjusted in the range of 100 ppm to 2000 ppm, more preferably in the range of 200 ppm to 1200 ppm, and particularly preferably in the range of 500 ppm to 1200 ppm.
- the liquid crystal composition of the present invention has a dielectric anisotropy ( ⁇ ) at ⁇ 25 ° C. of ⁇ 2.0 to ⁇ 8.0, and its lower limit is preferably ⁇ 7.0, preferably ⁇ 6.5, -6.0 is preferred, -5.5 is preferred, -5.0 is preferred, -4.5 is preferred, -4.0 is preferred, -3.9 is preferred, -3.8 is preferred,- 3.7, preferably -2.5, preferably -2.6, -2.7, preferably -2.8, -2.9, -3.0 is preferable. .
- the liquid crystal composition of the present invention has a refractive index anisotropy ( ⁇ n) at 25 ° C. of 0.08 to 0.20, and the lower limit thereof is preferably 0.09, preferably 0.10, and 0.11.
- ⁇ n refractive index anisotropy
- 0.12 is preferable, and 0.13 is preferable, and the upper limit thereof is preferably 0.19, preferably 0.18, preferably 0.17, preferably 0.16, and preferably 0.15. More specifically, when it corresponds to a thin cell gap, it is preferably 0.10 to 0.20, and when it corresponds to a thick cell gap, it is preferably 0.08 to 0.12.
- the liquid crystal composition of the present invention has a rotational viscosity ( ⁇ 1 ) at 25 ° C. of 50 to 200 mPa ⁇ s, and the lower limit thereof is preferably 55 mPa ⁇ s, preferably 60 mPa ⁇ s, preferably 62 mPa ⁇ s, and 64 mPa ⁇ s.
- the pitch may be set appropriately according to the cell thickness of the liquid crystal display element, but inconvenience arises if it is too short or too long.
- the liquid crystal composition of the present invention is 5 ⁇ m, preferably 6 ⁇ m, preferably 7 ⁇ m, preferably 8 ⁇ m, preferably 9 ⁇ m, preferably 10 ⁇ m, preferably 11 ⁇ m, and 12 ⁇ m.
- 13 ⁇ m is preferable
- 14 ⁇ m is preferable
- 15 ⁇ m is preferable
- 20 ⁇ m is preferable
- the upper limit of the pitch is 140 ⁇ m, but 130 ⁇ m is preferable, 120 ⁇ m is preferable, 110 ⁇ m is preferable, 100 ⁇ m is preferable, 90 ⁇ m is preferable, and 80 ⁇ m is preferable 70 ⁇ m is preferable, and 60 ⁇ m is preferable.
- the preferable range is as described above, but it is necessary to adjust appropriately within a certain range due to the influence of the cell thickness (cell gap), the structure of the transparent electrode, the kind of the alignment film, and the like.
- 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., and the lower limit thereof is preferably 65 ° C., preferably 70 ° C., preferably 71 ° C., 72 ° C is preferred, 73 ° C is preferred, 74 ° C is preferred, 75 ° C is preferred, and the upper limit is preferably 110 ° C, 105 ° C is preferred, 100 ° C is preferred, 95 ° C is preferred, 90 ° C is preferred, 88 ° C Is preferable, 86 ° C is preferable, 85 ° C is preferable, 84 ° C is preferable, 82 ° C is preferable, and 80 ° C is preferable.
- T ni nematic phase-isotropic liquid phase transition temperature
- the liquid crystal display element using the liquid crystal composition of the present invention has no or suppressed display defects such as dripping marks, image sticking, and display unevenness, and it is remarkable that both a low driving voltage, a high transmittance, and a fast response speed are compatible. It has the following features.
- the liquid crystal display element using the liquid crystal composition of the present invention is particularly useful for a liquid crystal display element for driving an active matrix, and a liquid crystal display element for PS mode, PSA mode, PSVA mode, PS-IPS mode or PS-FFS mode Can be used.
- the liquid crystal display element of the present invention has a sufficient tilt angle, has no residual monomer, or is not so small as to cause a problem, and has a high voltage holding ratio (VHR). , Well suppressed. Since the liquid crystal composition of the present invention can easily control the tilt angle and / or residual monomer, it is easy to optimize and reduce the energy cost for production, and easily produce a liquid crystal display device free from defects. It is ideal for improving production efficiency and stable mass production.
- the two substrates of the liquid crystal cell used in the liquid crystal display element 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.
- a 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 prepared by, for example, a pigment dispersion method, a printing method, an electrodeposition method, or a dyeing method.
- a method for 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 on the transparent substrate, subjected to patterning treatment, and cured by heating or light irradiation. By performing this process for each of the three colors red, green, and blue, a pixel portion for a color filter can be created.
- a pixel electrode provided with an active element such as a TFT, a thin film diode, or a metal insulator metal specific resistance element may be provided on the substrate.
- the substrate is opposed so that the transparent electrode layer is on the inside.
- the thickness of the obtained light control layer is 1 to 100 ⁇ m. More preferably, the thickness is 1.5 to 10 ⁇ m.
- the polarizing plate it is preferable to adjust the product of the refractive index anisotropy ⁇ n of the liquid crystal and the cell thickness d so that the contrast is maximized.
- the polarizing axis of each polarizing plate can be adjusted so that the viewing angle and contrast are good.
- a retardation film for widening the viewing angle can also be used.
- the spacer examples include glass particles, plastic particles, alumina particles, and a photoresist material.
- a sealant such as an epoxy thermosetting composition is screen-printed on the substrates with a liquid crystal inlet provided, the substrates are bonded together, and heated to thermally cure the sealant.
- a normal vacuum injection method or an ODF method can be used as a method of sandwiching the liquid crystal composition between the two substrates.
- an appropriate polymerization rate is desirable in order to obtain good alignment performance of the liquid crystal.
- a method of polymerizing by irradiating one or in combination or sequentially is preferable.
- ultraviolet rays When ultraviolet rays are used, a polarized light source or a non-polarized light source may be used.
- the polymerization is performed with the liquid crystal composition sandwiched between two substrates, at least the substrate on the irradiation surface side must be given appropriate transparency to the active energy rays.
- the orientation state of the unpolymerized part is changed by changing conditions such as an electric field, a magnetic field, or temperature, and further irradiation with active energy rays is performed. Then, it is possible to use a means for polymerization.
- a means for polymerization In particular, when ultraviolet exposure is performed, it is preferable to perform ultraviolet exposure while applying an alternating electric field to the liquid crystal composition.
- the alternating electric field to be applied is preferably an alternating current having a frequency of 10 Hz to 10 kHz, more preferably a frequency of 60 Hz to 10 kHz, and the voltage is selected depending on a desired pretilt 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 MVA mode liquid crystal display element, the pretilt angle is preferably controlled from 80 degrees to 89.9 degrees from the viewpoint of alignment stability and contrast.
- the temperature during irradiation is preferably within a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. Polymerization is preferably performed at a temperature close to room temperature, that is, typically 15 to 35 ° C.
- a lamp for generating ultraviolet rays a metal halide lamp, a high-pressure mercury lamp, an ultra-high pressure mercury lamp, or the like can be used.
- a wavelength of the ultraviolet-rays to irradiate it is preferable to irradiate the ultraviolet-ray of the wavelength range which is not the absorption wavelength range of a liquid crystal composition, and it is preferable to cut and use an ultraviolet-ray as needed.
- the intensity of the irradiated ultraviolet light is preferably 0.1 mW / cm 2 to 100 W / cm 2, more preferably 2 mW / cm 2 to 50 W / cm 2 .
- the amount of energy of ultraviolet rays to be irradiated can be adjusted as appropriate, but is preferably 10 mJ / cm 2 to 500 J / cm 2, and more preferably 100 mJ / cm 2 to 200 J / cm 2 .
- the intensity may be changed.
- the time for irradiation with ultraviolet rays is appropriately selected depending on the intensity of ultraviolet rays to be irradiated, but is preferably 10 seconds to 3600 seconds, and more preferably 10 seconds to 600 seconds.
- the measured physical properties are as follows.
- T ni Nematic phase-isotropic liquid phase transition temperature (° C.) ⁇ n: Refractive index anisotropy at 25 ° C. ⁇ : Dielectric anisotropy at 25 ° C. ⁇ 1 : Rotational viscosity at 25 ° C. (mPa ⁇ s) K 33 : Elastic constant at 25 ° C. K 33 (pN) VHR: Voltage holding ratio VHR (%) at 1 V, 60 Hz, 60 ° C. P: helical pitch at 25 ° C The measuring method is as follows. T ni was measured using a polarizing microscope equipped with a temperature control stage.
- ⁇ n was measured using an Abbe refractometer.
- ⁇ 1 was measured using a measuring device LCM-2 manufactured by Toyo Technica.
- K 33 was measured using a Toyo Ltd. measuring device EC-1.
- VHR was measured using a measuring device LCM-2 manufactured by Toyo Technica.
- PS-FFS mode liquid crystal display elements were prepared using the liquid crystal compositions EX-1, EX-2, EX-3 of the present invention and the comparative examples LC-1, LC-2.
- the liquid crystal display element injected with LC-1 did not function as the element.
- the liquid crystal display element into which EX-1, EX-2 and EX-3 were injected functions as an element, has a low driving voltage, a high transmittance, and a high response speed. It was confirmed that the response speed of the liquid crystal display element injected with LC-2 was slower than that of EX-1, EX-2, and EX-3. Further, it was confirmed that a slight alignment failure occurred.
- the liquid crystal composition of the present invention has a large refractive index anisotropy ( ⁇ n), a small rotational viscosity ( ⁇ 1), a large elastic constant (K 33 ), and a voltage holding ratio (VHR).
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Abstract
Description
VA型等の表示方式に用いられるネマチック液晶組成物には、3Dないし高精細に対応した高速応答が要求される。すなわち、液晶組成物の回転粘性(γ1)が小さく、弾性定数(K33)が大きく、これらから求められるγ1/K33の値が十分に小さいことが重要である。
また、屈折率異方性(Δn)とセルギャップ(d)との積であるΔn×dの設定から、応答速度改良のための小さいセルギャップに合わせて、液晶材料のΔnを適当に大きな範囲に調節する必要がある。加えて、液晶組成物のγ1を小さく抑えることが要求される。
特許文献3において、(式1)で示される指数が大きい液晶材料を使用することでホメオトロピック液晶セルの応答速度を向上させることが開示されているが、十分とは言えるものではなかった。
すなわち、誘電率異方性の絶対値(|Δε|)およびらせんピッチ(P:μm)から成る式(I)
Z100及びZ101はそれぞれ独立して、-O-、-S-、-CO-、-COO-、-OCO-、-O-COO-、-CO-N(R105)-、-N(R105)-CO-、-OCH2-、-CH2O-、-SCH2-、-CH2S-、-CF2O-、-OCF2-、-CF2S-、-SCF2-、-CH2CH2-、-CF2CH2-、-CH2CF2-、-CF2CF2-、-CH=CH-、-CF=CH-、-CH=CF-、-CF=CF-、-C≡C-、-CH=CH-COO-、-OCO-CH=CH-又は単結合を表し、
A100及びA101はそれぞれ独立して、
(a’) トランス-1,4-シクロへキシレン基(当該基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は、酸素原子又は硫黄原子に置換されていてもよい。)、
(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、窒素原子に置換されていてもよい。)、又は
(c’) 1,4-シクロヘキセニレン基、1,4-ビシクロ[2.2.2]オクチレン基、インダン-2,5-ジイル、ナフタレン-2,6-ジイル基、デカヒドロナフタレン-2,6-ジイル基及び1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基(これらの基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は、酸素原子又は硫黄原子に置換されていてもよく、これらの基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は、窒素原子に置換されていてもよい。)を表し、
A100又はA101が複数存在する場合には、それらは同一でもよく、異なっていてもよく、
n11は0又は1を表し、n11が0を表すとき、m12は0を表し、かつm11は0、1、2、3、4又は5を表し、n11が1を表すとき、m11とm12はそれぞれ独立して0、1、2、3、4又は5を表し、
Dは、下記式(D1)~(D4)で表される2価の基(式(D1)~(D4)中、黒丸を付した部位において、Z101(若しくは、R100)又はZ101(若しくは、R100)に、それぞれ結合する。)を表す。)
(a’) トランス-1,4-シクロへキシレン基(当該基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は、酸素原子又は硫黄原子に置換されていてもよい。)。
(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、窒素原子に置換されていてもよい。)。
(c’) 1,4-シクロヘキセニレン基、1,4-ビシクロ[2.2.2]オクチレン基、インダン-2,5-ジイル、ナフタレン-2,6-ジイル基、デカヒドロナフタレン-2,6-ジイル基及び1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基(これらの基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は、酸素原子又は硫黄原子に置換されていてもよく、これらの基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は、窒素原子に置換されていてもよい。)。
なお、キラル剤は右巻きであっても左巻きであっても良く、液晶表示素子の構成によって適宜使い分ければ良い。
一般式(np01)および一般式(np02)において、n01、n02はそれぞれ独立して0又は1を表すが、γ1をより小さくして、速い応答速度を得たい場合にはn01は0が好ましい。
一般式(np01)で表される化合物であって、n01が0を表す場合は、一般式(II-11)又は一般式(II-12)
一般式(np01)で表される化合物であって、n01が0を表す場合のもう一つの好ましい形態は、R01は炭素原子数1~10のアルキル基であって、R02は炭素原子数1~10のアルキル基又は炭素原子数1~10のアルコキシ基である。この場合、R01は炭素原子数1~5のアルキル基が好ましく、R01は炭素原子数2~5のアルキル基が更に好ましく、R02は炭素原子数1~5のアルキル基又は炭素原子数1~4のアルコキシ基が好ましく、R02は炭素原子数2~5のアルキル基が好ましく、高いVHRと速い応答速度を両立させる場合に適切である。
一般式(np01)で表される化合物であって、n01が1を表す場合は、式(L-4.1)から式(L-4.10)
一般式(np02)で表される化合物であって、n02が0を表す場合は、式(L-3.1)から式(L-3.7)
式中、R31からR34は、それぞれ独立的に炭素原子数1から10のアルキル基、炭素原子数1から10のアルコキシル基、炭素原子数2から10のアルケニル基又は炭素原子数2から10のアルケニルオキシ基を表し、R31からR34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-はそれぞれ独立的に-O-又は-S-に置換されても良く、また、R31からR34中に存在する1個又は2個以上の水素原子はそれぞれ独立的にフッ素原子又は塩素原子に置換されても良いが、R31及びR33は、それぞれ独立的に炭素原子数1から5のアルキル基、炭素原子数1から5のアルコキシル基、炭素原子数2から5のアルケニル基又は炭素原子数2から5のアルケニルオキシ基が好ましく、炭素原子数1から5のアルキル基又は炭素原子数2から5のアルケニル基が更に好ましく、炭素原子数1から3のアルキル基又は炭素原子数2から3のアルケニル基が更に好ましく、R32及びR34は、それぞれ独立的に炭素原子数1から5のアルキル基、炭素原子数1から5のアルコキシル基、炭素原子数2から5のアルケニル基又は炭素原子数2から5のアルケニルオキシ基が好ましく、炭素原子数1から5のアルキル基、炭素原子数1から5のアルコキシル基が更に好ましい。
式中、R41及びR42は、それぞれ独立的に炭素原子数1から5のアルキル基又は炭素原子数1から5のアルコキシ基、炭素原子数2から5のアルケニル基又は炭素原子数2から5のアルケニルオキシ基を表すが、炭素原子数2から5のアルキル基又は炭素原子数1から3のアルコキシ基、炭素原子数2から5のアルケニル基であることが好ましい。
式中、Zは水素原子、炭素原子数1から12のアルキル基、炭素原子数1から12のアルコキシル基又はR12を表すが、R12を表すことが好ましい。
式中、R11はP11-S11-を表し、R12はP12-S12-を表し、P11及びP12は、それぞれ独立的に、式(R-1)から式(R-15)
式中、S11及びS12は、それぞれ独立的に単結合又は炭素原子数1から15のアルキレン基を表し、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-、-OCO-又は-COO-で置換されても良いが、単結合又は炭素原子数1から6のアルキレン基が好ましく、単結合であることが更に好ましい。液晶組成物との溶解性を重視する場合は、炭素原子数1から6のアルキレン基であることが好ましく、炭素原子数1から3のアルキレン基であることが更に好ましく、炭素原子数1から2のアルキレン基であることが更に好ましく、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-、-OCO-又は-COO-で置換されても良い。また、存在するS11及びS12の内、少なくとも1つは単結合であるが、存在するS11及びS12の全てが単結合であることが好ましい。
式中、M11及びM12は、それぞれ独立的に1,4-フェニレン基、ベンゼン-1,2,4-トリイル基、ベンゼン-1,2,4,6-テトライル基、1,4-シクロヘキシレン基、ピリジン-2,5-ジイル基、ピリミジン-2,5-ジイル基、ナフタレン-2,6-ジイル基、インダン-2,5-ジイル基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基又は1,3-ジオキサン-2,5-ジイル基、フェナントレン-2,7-ジイル基を表すが、1,4-フェニレン基、1,4-シクロヘキシレン基、ナフタレン-2,6-ジイル基、フェナントレン-2,7-ジイル基が好ましく、1,4-フェニレン基、ナフタレン-2,6-ジイル基、フェナントレン-2,7-ジイル基が更に好ましい。なお、M11及びM12の内、少なくとも1つは炭素原子数1から12のアルコキシル基で置換されている。該アルコキシル基は炭素原子数1から6のアルコキシル基であることが好ましく、炭素原子数1から5のアルコキシル基であることが好ましく、炭素原子数1から4のアルコキシル基であることが好ましく、炭素原子数1から3のアルコキシル基であることが好ましく、炭素原子数1から2のアルコキシル基であることが好ましく、炭素原子数1のアルコキシル基であることが特に好ましい。
L11は、単結合、-O-、-S-、-CH2-、-OCH2-、-CH2O-、-CO-、-C2H4-、-COO-、-OCO-、-OCOOCH2-、-CH2OCOO-、-OCH2CH2O-、-CO-NRa-、-NRa-CO-、-SCH2-、-CH2S-、-CH=CRa-COO-、-CH=CRa-OCO-、-COO-CRa=CH-、-OCO-CRa=CH-、-COO-CRa=CH-COO-、-COO-CRa=CH-OCO-、-OCO-CRa=CH-COO-、-OCO-CRa=CH-OCO-、-(CH2)z-C(=O)-O-、-(CH2)z-O-(C=O)-、-O-(C=O)-(CH2)z-、-(C=O)-O-(CH2)z-、-CH=CH-、-CF=CF-、-CF=CH-、-CH=CF-、-CF2-、-CF2O-、-OCF2-、-CF2CH2-、-CH2CF2-、-CF2CF2-又は-C≡C-(式中、Raはそれぞれ独立的に水素原子又は炭素原子数1~4のアルキル基を表し、前記式中、zは1~4の整数を表す。)を表すが、単結合、-OCH2-、-CH2O-、-C2H4-、-COO-、-OCO-、-CH=CRa-COO-、-CH=CRa-OCO-、-COO-CRa=CH-、-OCO-CRa=CH-、-(CH2)z-COO-、-(CH2)z-OCO-、-OCO-(CH2)z-、-COO-(CH2)z-、-CH=CH-、-CF2O-、-OCF2-又は-C≡C-(式中、Raはそれぞれ独立して水素原子又は炭素原子数1~3のアルキル基を表し、前記式中、zは1~4の整数を表す。)が好ましく、単結合、-COO-、-OCO-、-CH=CH-COO-、-CH=CH-OCO-、-COO-CH=CH-、-OCO-CH=CH-、-(CH2)2-COO-、-(CH2)2-OCO-、-OCO-(CH2)2-、-COO-(CH2)2-又は-C≡C-が好ましく、-COO-、-OCO-、-CH=CH-COO-、-OCO-CH=CH-、-(CH2)2-COO-又は-OCO-(CH2)2-が更に好ましい。
m11は0から4の整数を表し、L11及びM12が複数存在する場合は、同一であっても良く異なっていても良い。なお、m11は1から3の整数であることが好ましく、重合速度を重視する場合にはm11は2から4の整数であることが好ましく、液晶組成物との相溶性を重視する場合にはm11は0から2の整数であることが好ましい。従って、重合速度と相溶性を両立するためには、m11は2であることが特に好ましい。
RM1、RM2及びRM3の内の少なくとも1つが式(R-1)から式(R-15)のいずれかであることが好ましく、少なくとも2つが式(R-1)から式(R-15)のいずれかであることが更に好ましく、少なくとも3つが式(R-1)から式(R-15)のいずれかであることが更に好ましい。
つまり、一般式(I-1)で表される重合性化合物は、前述の構造で示される通り、1つ以上の環を有するメソゲン構造であって、その内の1か所にアルコキシル基を有し、更に、重合性基を1つ以上有することを特徴としている。更に詳述すると、上述の特徴に加えて、メソゲン構造の内の1か所にフッ素基を有しても良い。
一般式(I-1)で表される重合性化合物として、一般式(I-21)又は(I-22)で表される化合物も適当である。
更に詳述すると、R101からR106の内の2つ、3つ又は4つはそれぞれ独立的に式(R-1)又は式(R-2)であることが好ましく、R101からR106の内の3つ又は4つはそれぞれ独立的に式(R-1)又は式(R-2)であることが好ましく、R101からR106の内の3つはそれぞれ独立的に式(R-1)又は式(R-2)であることが好ましい。
L13は、単結合、-OCH2-、-CH2O-、-C2H4-、-COO-、-OCO-、-CH=CRa-COO-、-CH=CRa-OCO-、-COO-CRa=CH-、-OCO-CRa=CH-、-(CH2)z-COO-、-(CH2)z-OCO-、-OCO-(CH2)z-、-COO-(CH2)z-、-CH=CH-、-CF2O-、-OCF2-又は-C≡C-(式中、Raはそれぞれ独立して水素原子又は炭素原子数1~3のアルキル基を表し、前記式中、zは1~4の整数を表す。)を表すが、単結合、-OCH2-、-CH2O-、-C2H4-、-COO-、-OCO-、-CH=CH-COO-、-CH=CH-OCO-、-COO-CH=CH-、-OCO-CH=CH-、-(CH2)2-COO-、-(CH2)2-OCO-、-OCO-(CH2)2-、-COO-(CH2)2-、-CH=CH-、又は-C≡C-であることが好ましく、単結合、-COO-、-OCO-、-CH=CH-COO-、-OCO-CH=CH-、-(CH2)2-COO-又は-OCO-(CH2)2-であることが更に好ましい。
一般式(I-21)で表される重合性化合物として、一般式(I-B01)から(I-B15)で表される化合物が挙げられる。
式中、R108、R109、R111およびR112は、それぞれ独立的に式(R-1)から式(R-15)、炭素原子数1から3のアルキル基、炭素原子数1から3のアルコキシ基、フッ素原子又は水素原子のいずれかを表し、A12は、1,4-フェニレン基、1,4-シクロヘキシレン基、ピリジン-2,5-ジイル基、ピリミジン-2,5-ジイル基、ナフタレン-2,6-ジイル基、インダン-2,5-ジイル基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基又は1,3-ジオキサン-2,5-ジイル基を表すが、基は無置換であるか又は炭素原子数1から12のアルキル基、ハロゲン、シアノ基又はニトロ基で置換されていても良く、L14は単結合、-OCH2-、-CH2O-、-C2H4-、-COO-、-OCO-、-CH=CRa-COO-、-CH=CRa-OCO-、-COO-CRa=CH-、-OCO-CRa=CH-、-(CH2)z-COO-、-(CH2)z-OCO-、-OCO-(CH2)z-、-COO-(CH2)z-、-CH=CH-、-CF2O-、-OCF2-又は-C≡C-(式中、Raはそれぞれ独立して水素原子又は炭素原子数1から3のアルキル基を表し、前記式中、zは1から4の整数を表す。)を表す。
式中、X15、X16、X17及びX18は、それぞれ独立的に水素原子、炭素原子数1から3のアルキル基又はフッ素原子を表す。
本発明の液晶組成物は、重合性化合物を0.01から5質量%含有するが、含有量の下限は0.02質量%が好ましく、0.03質量%が好ましく、0.04質量%が好ましく、0.05質量%が好ましく、0.06質量%が好ましく、0.07質量%が好ましく、0.08質量%が好ましく、0.09質量%が好ましく、0.1質量%が好ましく、0.15質量%が好ましく、0.2質量%が好ましく、0.25質量%が好ましく、0.3質量%が好ましく、0.35質量%が好ましく、0.4質量%が好ましく、0.5質量%が好ましく、0.55質量%が好ましく、含有量の上限は4.5質量%が好ましく、4質量%が好ましく、3.5質量%が好ましく、3質量%が好ましく、2.5質量%が好ましく、2質量%が好ましく、1.5質量%が好ましく、1質量%が好ましく、0.95質量%が好ましく、0.9質量%が好ましく、0.85質量%が好ましく、0.8質量%が好ましく、0.75質量%が好ましく、0.7質量%が好ましく、0.65質量%が好ましく、0.6質量%が好ましく、0.55質量%が好ましい。更に詳述すると、十分なプレチルト角又は少ない残留モノマー又は高い電圧保持率(VHR)を得るには、その含有量は0.2から0.6質量%が好ましいが、低温における析出の抑制を重視する場合には、その含有量は0.1から0.4質量%が好ましい。
本発明の液晶組成物に用いる光安定剤を含有する場合、一般に入手できるTinuvin770やLA-57といったHALSを用いることが好ましい。その含有量は100ppmから2000ppmの範囲で調整することが好ましく、200ppmから1200ppmの範囲であることが更に好ましく、500ppmから1200ppmの範囲であることが特に好ましい。
ピッチは、液晶表示素子のセル厚に応じて適切に設定すれば良いが、短すぎても長すぎても不都合が生じる。本発明の液晶組成物は、25℃におけるピッチ(μm)ピッチの下限は5μmであるが、6μmが好ましく、7μmが好ましく、8μmが好ましく、9μmが好ましく、10μmが好ましく、11μmが好ましく、12μmが好ましく、13μmが好ましく、14μmが好ましく、15μmが好ましく、20μmが好ましく、ピッチの上限は140μmであるが、130μmが好ましく、120μmが好ましく、110μmが好ましく、100μmが好ましく、90μmが好ましく、80μmが好ましく、70μmが好ましく、60μmが好ましい。好ましい範囲は上述の通りであるが、セル厚(セルギャップ)、透明電極の構造および配向膜の種類などの影響により、ある程度の範囲において適宜調整する必要がある。
本発明の液晶組成物を用いた液晶表示素子は、特に、アクティブマトリックス駆動用液晶表示素子に有用であり、PSモード、PSAモード、PSVAモード、PS-IPSモード又はPS-FFSモード用液晶表示素子に用いることができる。
本発明の液晶表示素子は、チルト角が十分かつ適度に得られ、残留モノマーがないか、問題にならないほど少なく、電圧保持率(VHR)が高いため、配向不良や表示不良といった不具合がないか、十分に抑制されている。
本発明の液晶組成物は、チルト角及び/または残留モノマーを容易に制御できるため、製造のためのエネルギーコストの最適化及び削減が容易であり、不具合のない液晶表示素子を容易に製造することが可能なため、生産効率の向上と安定した量産に最適である。
(側鎖)
-n -CnH2n+1 炭素原子数nの直鎖状のアルキル基
n- CnH2n+1- 炭素原子数nの直鎖状のアルキル基
-On -OCnH2n+1 炭素原子数nの直鎖状のアルコキシル基
nO- CnH2n+1O- 炭素原子数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=CH2
V2- CH2=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-
-COO- -COO-
-OCO- -OCO-
-2- -CH2-CH2-
-V- -CH=CH-
(環構造)
Δn :25℃における屈折率異方性
Δε :25℃における誘電率異方性
γ1 :25℃における回転粘性(mPa・s)
K33 :25℃における弾性定数K33(pN)
VHR :1V、60Hz、60℃における電圧保持率VHR(%)
P :25℃におけるらせんピッチ
なお、測定方法は以下の通りである。
Tniは、温度調節ステージを備えた偏光顕微鏡を用いて測定した。
比較例1(LC-1)および比較例2(LC-2)に対し、実施例1(EX-1)、実施例2(EX-2)および実施例3(EX-3)の液晶組成物を調製し、その物性値を測定した。液晶組成物の構成とその物性値の結果は表1のとおりであった。なお、Ex-1はHost LCを100gに対し、キラル剤(Chiral dopant)を1g及び重合性化合物(Reactive monomer)を0.33g添加し作成した。他の組成物も同様にして調製した。
重合性化合物として、(XX-2)の代わりに(M33)又は(M-302)を用いた場合も同様の傾向が確認された。
これらすべての液晶表示素子のVHRは、いずれも97%以上の高い値であることを確認した。
これらすべての液晶表示素子をSHINTECH社製焼き付き評価装置Optiproを用いて焼き付き評価したところ、LC-1を除いて、焼き付かないことを確認した。
以上のことから、本発明の液晶組成物は、屈折率異方性(Δn)が大きく、回転粘性(γ1)が小さく、弾性定数(K33)が大きく、更に、電圧保持率(VHR)が高い負の誘電率異方性(Δε)を有したものであって、これを用いた液晶表示素子は滴下痕や焼き付きや表示ムラ等の表示不良がない又は抑制された、低い駆動電圧と高い透過率と速い応答速度を両立したものであることが確認された。
Claims (17)
- ピッチを誘起するキラル剤として、一般式(Ch-I)
(式中、R100及びR101はそれぞれ独立して、水素原子、-CN、-NO2、ハロゲン原子、-OCN、-SCN、-SF5、炭素原子数1~30個のキラル又はアキラルなアルキル基、重合性基、又は環構造を含むキラルな基を表し、n11が0のとき、R100及びR101の少なくとも1つは、キラルなアルキル基であり、
Z100及びZ101はそれぞれ独立して、-O-、-S-、-CO-、-COO-、-OCO-、-O-COO-、-CO-N(R105)-、-N(R105)-CO-、-OCH2-、-CH2O-、-SCH2-、-CH2S-、-CF2O-、-OCF2-、-CF2S-、-SCF2-、-CH2CH2-、-CF2CH2-、-CH2CF2-、-CF2CF2-、-CH=CH-、-CF=CH-、-CH=CF-、-CF=CF-、-C≡C-、-CH=CH-COO-、-OCO-CH=CH-又は単結合を表し、
A100及びA101はそれぞれ独立して、
(a’) トランス-1,4-シクロへキシレン基(当該基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は、酸素原子又は硫黄原子に置換されていてもよい。)、
(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、窒素原子に置換されていてもよい。)、又は
(c’) 1,4-シクロヘキセニレン基、1,4-ビシクロ[2.2.2]オクチレン基、インダン-2,5-ジイル、ナフタレン-2,6-ジイル基、デカヒドロナフタレン-2,6-ジイル基及び1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基(これらの基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は、酸素原子又は硫黄原子に置換されていてもよく、これらの基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は、窒素原子に置換されていてもよい。)を表し、
A100又はA101が複数存在する場合には、それらは同一でもよく、異なっていてもよく、
n11は0又は1を表し、n11が0を表すとき、m12は0を表し、かつm11は0、1、2、3、4又は5を表し、n11が1を表すとき、m11とm12はそれぞれ独立して0、1、2、3、4又は5を表し、
Dは、下記式(D1)~(D4)で表される2価の基
(式(D1)~(D4)中、黒丸を付した部位において、Z101(若しくは、R100)又はZ101(若しくは、R100)に、それぞれ結合する。)を表す。)で表される化合物を含有する請求項1に記載の液晶組成物。 - 一般式(III-1)又は一般式(III-2)
(式中、R31、R32、R33、R34は、それぞれ独立して炭素原子数1から10のアルキル基、炭素原子数1から10のアルコキシル基、炭素原子数2から10のアルケニル基又は炭素原子数2から10のアルケニルオキシ基を表し、R31からR34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-はそれぞれ独立的に-O-又は-S-に置換されても良く、また、R31からR34中に存在する1個又は2個以上の水素原子はそれぞれ独立的にフッ素原子又は塩素原子に置換されても良く、環A32、環B31、環B32は、それぞれ独立してトランス-1,4-シクロへキシレン基、1,4-フェニレン基、2-フルオロ-1,4-フェニレン基、3-フルオロ-1,4-フェニレン基、3,5-ジフルオロ-1,4-フェニレン基、2,3-ジフルオロ-1,4-フェニレン基、1,4-シクロヘキセニレン基、1,4-ビシクロ[2.2.2]オクチレン基、ピペリジン-1,4-ジイル基、ナフタレン-2,6-ジイル基、デカヒドロナフタレン-2,6-ジイル基又は1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基を表し、Z31、Z32は、それぞれ独立して-OCH2-、-CH2O-、-CF2O-、-OCF2-、-CH2CH2-、-CF2CF2-、-COO-、-OCO-又は単結合を表す。)で表される化合物を1種又は2種以上含有する請求項1又は2に記載の液晶組成物。 - 一般式(III-1)及び一般式(III-2)の含有量の総量が10から90質量%である請求項3に記載の液晶組成物。
- キラル剤の含有量が0.01質量%から5質量%である請求項1から7のいずれか一項に記載の液晶組成物。
- 一般式(np01)及び一般式(np02)の含有量の総量が10から90質量%である請求項1に記載の液晶組成物。
- 25℃における誘電率異方性(Δε)が-2.0から-8.0の範囲であり、25℃における屈折率異方性(Δn)が0.08から0.20の範囲であり、25℃における回転粘性(γ1)が50から200mPa・sの範囲であり、ネマチック相-等方性液体相転移温度(Tni)が60℃から120℃の範囲である請求項1から10のいずれか1項に記載の液晶組成物。
- 一般式(I-31)及び一般式(I―32)
(式中、R107は、P107-S107-を表し、R110は、P110-S110-を表し、P107及びP110は、それぞれ独立的に式(R-1)から式(R-15)
のいずれかを表し、S107及びS110は、それぞれ独立的に単結合又は炭素数1~15のアルキレン基を表し、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-、-OCO-又は-COO-で置換されて良く、R108、R109、R111およびR112は、それぞれ独立的に式(R-1)から式(R-15)、炭素原子数1から3のアルキル基、炭素原子数1から3のアルコキシ基、フッ素原子又は水素原子のいずれかを表し、環A12は、1,4-フェニレン基、1,4-シクロヘキシレン基、ピリジン-2,5-ジイル基、ピリミジン-2,5-ジイル基、ナフタレン-2,6-ジイル基、インダン-2,5-ジイル基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基又は1,3-ジオキサン-2,5-ジイル基を表し、これらの基は炭素原子数1から12のアルキル基、ハロゲン、シアノ基又はニトロ基で置換されていても良く、L14は単結合、-OCH2-、-CH2O-、-C2H4-、-COO-、-OCO-、-CH=CRa-COO-、-CH=CRa-OCO-、-COO-CRa=CH-、-OCO-CRa=CH-、-(CH2)z-COO-、-(CH2)z-OCO-、-OCO-(CH2)z-、-COO-(CH2)z-、-CH=CH-、-CF2O-、-OCF2-、-C≡C-、又は-O-(CH2)z-O-(式中、Raはそれぞれ独立して水素原子又は炭素原子数1から3のアルキル基を表し、zは1から4の整数を表す。)を表し、X15、X16、X17、X18は、それぞれ独立して水素原子、炭素原子数1から3のアルキル基又はフッ素原子を表す。)から選ばれる重合性化合物を含有する請求項1から11のいずれか一項に記載の液晶組成物。 - 式(I)で得られる値が、5から40の範囲である請求項1に記載の液晶組成物。
- 請求項1から12のいずれか1項に記載の液晶組成物を用いた液晶表示素子。
- 請求項1から12のいずれか1項に記載の液晶組成物を用いたアクティブマトリックス駆動用液晶表示素子。
- 請求項1から12のいずれか1項に記載の液晶組成物を用いたPSモード、PSAモード、PSVAモード、PS-IPSモード又はPS-FFSモードの液晶表示素子。
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| JP2016563873A JP6206603B2 (ja) | 2015-06-24 | 2016-06-09 | ネマチック液晶組成物及びこれを用いた液晶表示素子 |
| KR1020177031536A KR20180022634A (ko) | 2015-06-24 | 2016-06-09 | 네마틱 액정 조성물 및 이것을 사용한 액정 표시 소자 |
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| CN110317613B (zh) * | 2018-03-28 | 2022-03-11 | 江苏和成显示科技有限公司 | 一种液晶组合物及液晶显示器件 |
| JP7205152B2 (ja) * | 2018-10-15 | 2023-01-17 | 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 |
| CN109880639B (zh) * | 2019-03-29 | 2020-12-01 | 石家庄诚志永华显示材料有限公司 | 液晶组合物、液晶显示元件、液晶显示器 |
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| CN107532085A (zh) | 2018-01-02 |
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