WO2017082230A1 - 組成物及びそれを使用した液晶表示素子 - Google Patents
組成物及びそれを使用した液晶表示素子 Download PDFInfo
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- WO2017082230A1 WO2017082230A1 PCT/JP2016/083038 JP2016083038W WO2017082230A1 WO 2017082230 A1 WO2017082230 A1 WO 2017082230A1 JP 2016083038 W JP2016083038 W JP 2016083038W WO 2017082230 A1 WO2017082230 A1 WO 2017082230A1
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- 0 C*(C)c(ccc(*)c1F)c1F Chemical compound C*(C)c(ccc(*)c1F)c1F 0.000 description 5
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- 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
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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
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
Definitions
- the present invention relates to a 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 for clocks, calculators, various measuring instruments, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertisement display boards, and the like.
- Typical liquid crystal display methods include TN (twisted nematic) type, STN (super twisted nematic) type, VA (vertical alignment) type using TFT (thin film transistor), and IPS (in-plane Switching) type or FFS (fringe field switching) type.
- the main characteristics required for these liquid crystal compositions are (1) being stable against external stimuli such as moisture, air, heat and light, and (2) the liquid crystal phase in the widest possible temperature range centering on room temperature. (3) low viscosity, and (4) low drive voltage.
- the liquid crystal composition is selected from several to several tens of compounds so as to satisfy these characteristics. Things are prepared.
- An object of the present invention is to provide a deterioration dielectric anisotropy, viscosity, nematic phase upper limit temperature, the nematic phase stability at low temperatures, the burn characteristics of the various properties and display device as a liquid crystal display element such as gamma 1 It is providing the liquid crystal composition which can suppress the fall of quality in a liquid crystal display element manufacturing process, and a liquid crystal display element using the same, without making it.
- the present inventors have studied various liquid crystal compounds and various chemical substances, and found that the above problems can be solved by combining specific liquid crystal compounds, and have completed the present invention.
- R i1 and R i2 each independently represent an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms, but the total number of carbon atoms contained in R i1 and R i2) Is 6 or more.
- VA Virtual Alignment
- FFS Ringe Field Switching
- the composition having negative dielectric anisotropy of the present invention can obtain a significantly low viscosity, has good solubility at low temperature, and changes in specific resistance and voltage holding ratio due to heating and light irradiation are extremely high. Since it is small, the practicality of the product is high, and a VA mode or FFS mode liquid crystal display element using the product can achieve a high speed response. In addition, since the performance can be stably exhibited in the liquid crystal display element manufacturing process, display defects due to the process can be suppressed and manufacturing can be performed with a high yield, which is very useful.
- the composition of the present invention preferably exhibits a liquid crystal phase at room temperature (25 ° C.), and more preferably exhibits a nematic phase.
- the composition of the present invention preferably contains a dielectrically nearly neutral compound ( ⁇ value is ⁇ 2 to 2) and a negative compound ( ⁇ value is less than ⁇ 2).
- ⁇ of the compound is a value extrapolated from a measured value of dielectric anisotropy of a composition prepared by adding to a dielectrically nearly neutral composition at 25 ° C.
- content is described in% below, this means the mass%.
- the liquid crystal composition having a negative dielectric anisotropy of the present invention contains a compound represented by the general formula (i), the compound represented by the general formula (i) can be used alone, Two or more compounds may be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- R i1 and R i2 in the general formula (i) may be linear or branched, but are preferably linear, and the alkyl group is an alkyl group having 1 to 8 carbon atoms.
- Preferred is an alkyl group having 1 to 6 carbon atoms, preferred is an alkyl group having 1 to 5 carbon atoms, preferred is an alkyl group having 2 to 5 carbon atoms, and preferred is an alkyl group having 3 to 5 carbon atoms.
- an alkenyl group having 2 to 8 carbon atoms is preferable, an alkenyl group having 2 to 6 carbon atoms is preferable, and an alkenyl group having 2 to 5 carbon atoms is preferable, and the following formulas (R1) to ( R5) is preferably selected from groups represented by any one of R5).
- the black spot in each formula represents the carbon atom in the ring structure to which R i1 and R i2 are bonded.
- Particularly preferred are groups represented by the formulas (R1) and (R2).
- the total number of carbon atoms contained in R i1 and R i2 in the general formula (i) is preferably 6 or more, and more preferably 7 or more.
- the compound represented by the general formula (i) When the compound represented by the general formula (i) is used in combination, it is preferable to combine the compound represented by the formula (i-22) with another compound, and the formula (i-22) and the formula (i ⁇ 21), a combination of compounds represented by formula (i-22) and formula (i-23), a compound represented by formula (i-22) and formula (i-25) The combination of is preferable.
- the lower limit of the preferable content of the compound represented by the general formula (i) in the liquid crystal composition is 25%, 26%, and 27% with respect to the total amount of the composition of the present invention. 28%, 29%, 30%, 32%, 35%, 37%, and 40%.
- the upper limit of the preferable content is 65%, 60%, 55%, 50%, 45%, 40%, and 35% with respect to the total amount of the composition of the present invention. % And 30%.
- the above lower limit value is high and the upper limit value is high.
- the above lower limit value is preferably high and the upper limit value is preferably low.
- the above lower limit value is preferably moderate and the upper limit value is moderate.
- the lower limit value is low and the upper limit value is low.
- the lower limit of the preferable content in the liquid crystal composition of the compound in which R i1 in the general formula (i) is a vinyl group is 20% and 23% with respect to the total amount of the composition of the present invention, 25%, 26%, 27%, 28%, 29%, 30%, 15%, 20%, 25%, 30%, 32%, 35%, 37%, and 40%.
- the upper limit of the preferable content is 65%, 60%, 55%, 50%, 45%, 40%, and 35% with respect to the total amount of the composition of the present invention. % And 30%.
- the lower limit of the preferable content in the liquid crystal composition of the compound represented by the general formula (i-22) is 20%, 23%, 25% with respect to the total amount of the composition of the present invention. 26% 27% 28% 29% 30% 15% 15% 20% 25% 30% 32% 35%, 37% and 40%.
- the upper limit of the preferable content is 65%, 60%, 55%, 50%, 45%, 40%, and 35% with respect to the total amount of the composition of the present invention. % And 30%.
- the lower limit of the preferable content in the compound liquid crystal composition represented by formula (i-21), formula (i-22), formula (i-23) and formula (i-25) is the composition of the present invention. 25%, 26%, 27%, 28%, 29%, 30%, 15%, 20%, and 25% of the total amount Yes, 30%, 32%, 35%, 37%, 40%.
- the upper limit of the preferable content is 65%, 60%, 55%, 50%, 45%, 40%, and 35% with respect to the total amount of the composition of the present invention. % And 30%.
- the lower limit of the preferable content in the liquid crystal composition of the compound in which the total number of carbon atoms contained in R i1 and R i2 in the general formula (i) is 7 or more is based on the total amount of the composition of the present invention. 25%, 26%, 27%, 28%, 29%, 30%, 15%, 20%, 25%, 30% Yes, 32%, 35%, 37%, 40%.
- the upper limit of the preferable content is 65%, 60%, 55%, 50%, 45%, 40%, and 35% with respect to the total amount of the composition of the present invention. % And 30%.
- composition of the present invention preferably contains one or more compounds selected from the compounds represented by formulas (N-1), (N-2) and (N-3). These compounds correspond to dielectrically negative compounds (the sign of ⁇ is negative and the absolute value is greater than 2).
- R N11 , R N12 , R N21 , R N22 , R N31 and R N32 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent 2 in the alkyl group
- Two or more —CH 2 — may be each independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—
- a N11 , A N12 , A N21 , A N22 , A N31, and A N32 are each independently (a) a 1,4-cyclohexylene group (one —CH 2 — or adjacent to each other in this group).
- —CH 2 — may be replaced by —O—
- C Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6- One —CH ⁇ present in a diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent —CH ⁇ are replaced by —N ⁇ .
- the group (a), the group (b) and the group (c) may be each independently substituted with a cyano group, a fluorine atom or a chlorine atom, Z N11 , Z N12 , Z N21 , Z N22 , Z N31 and Z N32 are each independently a single bond, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—.
- XN21 represents a hydrogen atom or a fluorine atom
- T N31 represents —CH 2 — or an oxygen atom
- n N11 , n N12 , n N21 , n N22 , n N31, and n N32 each independently represent an integer of 0 to 3, but n N11 + n N12 , n N21 + n N22, and n N31 + n N32 are each independently When there are a plurality of A N11 to A N32 and Z N11 to Z N32 , they may be the same or different.
- the compounds represented by the general formulas (N-1), (N-2) and (N-3) are preferably compounds having a negative ⁇ and an absolute value larger than 3.
- R N11 , R N12 , R N21 , R N22 , R N31 and R N32 each independently represent 1 to 8 carbon atoms.
- An alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms preferably 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 an alkenyloxy group having 2 to 5 carbon atoms is preferable, and an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms is preferable.
- an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is more preferable, and an alkenyl group having 3 carbon atoms (propenyl group
- the ring structure to which it is bonded is a phenyl group (aromatic)
- An alkenyl group having 4 to 5 atoms is preferable
- the ring structure to which the alkenyl group is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane
- a straight-chain alkoxy group having 1 to 4 carbon atoms and a straight-chain alkenyl group having 2 to 5 carbon atoms are preferred.
- the total of carbon atoms and oxygen atoms, if present is preferably 5 or less, and is preferably linear.
- the alkenyl group is preferably selected from groups represented by any of the formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure.)
- a N11 , A N12 , A N21 , A N22 , A N31, and A N32 are preferably aromatic when it is required to increase ⁇ n independently, and in order to improve the response speed, fat
- fat Preferably a 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 [2.2.2] octylene group, piperidine-1 , 4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group Preferred, it is more preferable that represents the following
- it represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group.
- Z N11, Z N12, Z N21 , Z N22, Z N31 and Z N32 -CH 2 each independently O -, - CF 2 O - , - CH 2 CH 2 -, - CF 2 CF 2 - or a single bond preferably represents an, -CH 2 O -, - CH 2 CH 2 - or a single bond is more preferable, -CH 2 O-or a single bond is particularly preferred.
- XN21 is preferably a fluorine atom.
- T N31 is preferably an oxygen atom.
- n N11 + n N12 , n N21 + n N22 and n N31 + n N32 are preferably 1 or 2, a combination in which n N11 is 1 and n N12 is 0, a combination in which n N11 is 2 and n N12 is 0, n A combination in which N11 is 1 and n N12 is 1, a combination in which n N11 is 2 and n N12 is 1, a combination in which n N21 is 1 and n N22 is 0, n N21 is 2 and n N22 is n A combination in which n N31 is 1 and n N32 is 0, and a combination in which n N31 is 2 and n N32 is 0 are preferable.
- the lower limit of the preferable content of the compound represented by the formula (N-1) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30% , 40%, 50%, 55%, 60%, 65%, 70%, 75%, and 80%.
- the upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20% It is.
- the lower limit of the preferable content of the compound represented by the formula (N-2) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30% , 40%, 50%, 55%, 60%, 65%, 70%, 75%, and 80%.
- the upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20% It is.
- the lower limit of the preferable content of the compound represented by the formula (N-3) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30% , 40%, 50%, 55%, 60%, 65%, 70%, 75%, and 80%.
- the upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20% It is.
- the above lower limit value is preferably low and the upper limit value is preferably low. Furthermore, when the composition of the present invention keeps Tni high and a composition having good temperature stability is required, the above lower limit value is preferably low and the upper limit value is preferably low. When it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the above lower limit value is increased and the upper limit value is high.
- the compound represented by the general formula (N-1) preferably contains one or more compounds represented by the general formula (N-11) and the general formula (N-12).
- R N11 , R N12 , A N11 , A N12 , Z N11 , Z N12 , n N11 and n N12 are each independently R N11 , R N12 , A N11 , A in the general formula (N-1).
- N12, Z N11, Z N12, n represents the same meaning as N11 and n N121
- a N121 and a N212 each independently represent the same meaning as a N11 in the general formula (n-1)
- n N121 and n N122 Each independently represents 0, 1 or 2, but n N121 + n N122 represents 0, 1, 2 or 3.
- Examples of the compounds represented by the general formulas (N-11) and (N-12) include compounds represented by the following general formulas (N-1a) to (N-1d).
- R N11 and R N12 are as defined R N11 and R N12 in the general formula (N-1), n Na11 represents 0 or 1, n NB11 represents 0 or 1, n NC11 is Represents 0 or 1, and n Nd11 represents 0 or 1)
- the compound represented by the general formula (N-1) is a compound selected from the group of compounds represented by the general formulas (N-1-1) to (N-1-21). preferable.
- the compound represented by the general formula (N-1-1) is the following compound.
- R N111 and R N112 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- R N111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a propyl group or a pentyl group.
- RN112 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group or a butoxy group.
- the compound represented by the general formula (N-1-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-1) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%.
- the upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% %, 5%, 3%.
- the compound represented by the general formula (N-1-1) is a compound selected from the group of compounds represented by the formula (N-1-1.1) to the formula (N-1-1.14).
- it is a compound represented by the formulas (N-1-1.1) to (N-1-1.4), and the formula (N-1-1.1) and the formula (N
- the compound represented by -1-1.3) is preferable.
- the compounds represented by the formulas (N-1-1.1) to (N-1-1.4) can be used alone or in combination.
- the lower limit of the preferred content of these compounds alone or with respect to the total amount is 5%, 10%, 13%, 15%, 17%, 20%, 23% 25% 27% 30% 33% 35%
- the upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% %, 5%, 3%.
- the compound represented by the general formula (N-1-2) is the following compound.
- R N121 and R N122 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- RN121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group or a pentyl group.
- RN122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and includes a methyl group, a propyl group, a methoxy group, an ethoxy group, or a propoxy group. preferable.
- the compound represented by the general formula (N-1-2) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-2) with respect to the total amount of the composition of the present invention is 5%, 7%, 10%, 13% 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37% 40% and 42%.
- the upper limit of the preferable content is 50%, 48%, 45%, 43%, 40%, 38%, and 35% with respect to the total amount of the composition of the present invention. %, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10% %, 8%, 7%, 6%, 5%.
- the compound represented by the general formula (N-1-2) is a compound selected from the group of compounds represented by the formula (N-1-2.1) to the formula (N-1-2.13).
- the compound represented by (N-1-2.13) is preferable, and when importance is placed on the improvement of ⁇ , the formula (N-1-2.3) to the formula (N-1-2.7) in the compounds represented, when emphasizing improvements in T NI formula (N-1-2.10), formula (N-1-2.11) and formula (N-1-2.13) It is preferable that it is a compound represented by these.
- the compounds represented by the formula (N-1-2.1) to the formula (N-1-2.13) can be used alone or in combination.
- the lower limit of the preferable content of these compounds alone or with respect to the total amount of is 5%, 10%, 13%, 15%, 17%, 20%, 23 %, 25%, 27%, 30%, 33%, and 35%.
- the upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% %, 5%, 3%.
- the compound represented by the general formula (N-1-3) is the following compound.
- R N131 and R N132 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- R N131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N132 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-3) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-3) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-3) is a compound selected from the group of compounds represented by the formula (N-1-3.1) to the formula (N-1-3.11).
- it is a compound represented by the formulas (N-1-3.1) to (N-1-3.7), and the formula (N-1-3.1) and the formula (N -1-3.2), formula (N-1-3.3), formula (N-1-3.4) and compounds represented by formula (N-1-3.6) are preferred.
- the compounds represented by formula (N-1-3.1) to formula (N-1-3.4) and formula (N-1-3.6) may be used alone or in combination. Is possible, but the combination of formula (N-1-3.1) and formula (N-1-3.2), formula (N-1-3.3), formula (N-1-3.4) ) And a combination of two or three selected from formula (N-1-3.6) are preferred.
- the lower limit of the preferred content of these compounds alone or with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, 20% %.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-4) is the following compound.
- R N141 and R N142 each independently represents the same meaning as R N11 and R N12 in the general formula (N).
- R N141 and R N142 are each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group or an alkoxy group having 1 to 4 carbon atoms carbon atoms 4-5 preferably a methyl group, a propyl group, an ethoxy Group or butoxy group is preferred.
- the compound represented by the general formula (N-1-4) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-4) with respect to the total amount of the composition of the present invention is 3%, 5%, 7%, 10% 13%, 15%, 17%, 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 11%, 10%, and 8%.
- the compound represented by the general formula (N-1-4) is a compound selected from the group of compounds represented by the formula (N-1-4.1) to the formula (N-1-4.14).
- it is a compound represented by the formulas (N-1-4.1) to (N-1-4.4), and the formula (N-1-4.1) and the formula (N
- the compound represented by -1-4.2) is preferable.
- the compounds represented by formulas (N-1-4.1) to (N-1-4.4) can be used singly or in combination, but the compounds of the present invention
- the lower limit of the preferable content of these compounds alone or with respect to the total amount is 3%, 5%, 7%, 10%, 13%, 15%, 17% And 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 11%, 10%, and 8%.
- the compound represented by the general formula (N-1-5) is the following compound.
- R N151 and R N152 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- R N151 and R N152 are each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. Is preferred.
- the compound represented by the general formula (N-1-5) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-5) with respect to the total amount of the composition of the present invention is 5%, 8%, 10%, 13% 15%, 17%, 20%.
- the upper limit of the preferable content is 35%, 33%, 30%, 28%, 25%, 23%, and 20% with respect to the total amount of the composition of the present invention. %, 18%, 15% and 13%.
- the compound represented by the general formula (N-1-5) is a compound selected from the group of compounds represented by the formula (N-1-5.1) to the formula (N-1-5.6). It is preferable that a compound represented by the formula (N-1-3.2 and the formula (N-1-3.4) is preferable.
- the compounds represented by formula (N-1-3.2) and formula (N-1-3.4) can be used alone or in combination.
- the lower limit of the preferable content of these compounds alone or with respect to the total amount is 5%, 8%, 10%, 13%, 15%, 17%, 20%
- the upper limit of the preferred content is 35%, 33%, 30%, 28%, 25%, and 23% with respect to the total amount of the composition of the present invention. Yes, 20%, 18%, 15%, 13%.
- the compound represented by the general formula (N-1-10) is the following compound.
- R N1101 and R N1102 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- R N1101 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N1102 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-10) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-10) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-10) is a compound selected from the group of compounds represented by the formula (N-1-10.1) to the formula (N-1-10.15).
- it is a compound represented by the formulas (N-1-10.1) to (N-1-10.5), and the formula (N-1-10.1) and the formula (N
- the compound represented by (1-10.2) is preferable.
- the compounds represented by the formula (N-1-10.1) and the formula (N-1-10.2) can be used alone or in combination.
- the lower limit of the preferable content of these compounds alone or with respect to the total amount is 5%, 10%, 13%, 15%, 17%, and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-11) is the following compound.
- R N1111 and R N1112 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- R N1111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N1112 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.
- the compound represented by the general formula (N-1-11) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-11) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-11) is a compound selected from the group of compounds represented by the formula (N-1-11.1) to the formula (N-1-11.15).
- it is a compound represented by the formulas (N-1-11.1) to (N-1-11.15), and is preferably a compound represented by the formula (N-1-11.2) or the formula (N-- The compound represented by 1-11.4) is preferable.
- the compounds represented by the formula (N-1-11.2 and the formula (N-1-11.4) can be used alone or in combination.
- the lower limit of the preferable content of these compounds alone or with respect to the total amount is 5%, 10%, 13%, 15%, 17%, and 20%.
- the upper limit of the amount is 35%, 30%, 28%, 25%, 23%, 20%, 18% with respect to the total amount of the composition of the present invention. Yes, 15%, 13%.
- the compound represented by the general formula (N-1-12) is the following compound.
- R N1121 and R N1122 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- RN1121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- RN1122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-12) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-12) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-13) is the following compound.
- R N1131 and R N1132 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- R N1131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N1132 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-13) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-13) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-14) is the following compound.
- R N1141 and R N1142 each independently represent the same meaning as R N11 and R N12 in formula (N).
- R N1141 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N1142 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-14) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-14) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-15) is the following compound.
- R N1151 and R N1152 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- RN1151 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N1152 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-15) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-15) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-16) is the following compound.
- R N1161 and R N1162 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- R N1161 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N1162 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-16) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-16) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-17) is the following compound.
- R N1171 and R N1172 each independently represent the same meaning as R N11 and R N12 in General Formula (N)).
- RN1171 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N1172 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-17) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-17) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-18) is the following compound.
- R N1181 and R N1182 each independently represent the same meaning as R N11 and R N12 in General Formula (N)).
- RN1181 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- R N1182 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
- the compound represented by the general formula (N-1-18) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-18) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-20) is the following compound.
- R N1201 and R N1202 each independently represent the same meaning as R N11 and R N12 in formula (N)).
- R N1201 and R N1202 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- the compound represented by the general formula (N-1-20) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-20) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the compound represented by the general formula (N-1-21) is the following compound.
- R N1211 and R N1212 each independently represent the same meaning as R N11 and R N12 in General Formula (N).
- R N1211 and R N1212 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
- the compound represented by the general formula (N-1-21) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (N-1-21) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
- the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
- the composition of the present invention preferably contains one or more compounds represented by the general formula (L).
- the compound represented by the general formula (L) corresponds to a dielectrically neutral compound ( ⁇ value is ⁇ 2 to 2).
- the compound represented by the general formula (L) may have a halogen atom in the molecule, but the number is preferably 0 or 1.
- R L1 and R L2 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently Optionally substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, n L1 represents 0, 1, 2 or 3,
- a L1 , A L2 and A L3 each independently represent (a) a 1,4-cyclohexylene group (one —CH 2 — present in the group or two or more —CH 2 — not adjacent to each other).
- the group (a), the group (b) and the group (c) may be each independently substituted with a cyano group, a fluorine atom or a chlorine atom
- n L1 is 2 or 3
- a plurality of A L2 are present, they may be the same or different, and when n L1 is 2 or 3, and a plurality of Z L3 are present, May be the same or different, but excludes compounds represented by general formula (i), general formula (N-1), general formula (N-2) and general formula (N-3).
- the compound represented by general formula (L) may be used independently, it can also be used in combination.
- the types of compounds that can be combined but they are used in appropriate combinations according to desired properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention.
- the content of the compound represented by the general formula (L) is low-temperature solubility, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, image sticking, It is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
- the lower limit of the preferable content of the compound represented by the formula (L) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30%, 40 %, 50%, 55%, 60%, 65%, 70%, 75%, 80%.
- the upper limit of the preferable content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, and 25%.
- the above lower limit value is preferably high and the upper limit value is preferably high. Furthermore, when the composition of the present invention maintains a high Tni and requires a composition having good temperature stability, the above lower limit value is preferably high and the upper limit value is preferably high. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the above lower limit value is lowered and the upper limit value is low.
- R L1 and R L2 are preferably both alkyl groups, and when importance is placed on reducing the volatility of the compound, it is preferably an alkoxy group, and importance is placed on viscosity reduction. In this case, at least one is preferably an alkenyl group.
- the number of halogen atoms present in the molecule is preferably 0, 1, 2 or 3, preferably 0 or 1, and 1 is preferred when importance is attached to compatibility with other liquid crystal molecules.
- R L1 and R L2 are each a linear alkyl group having 1 to 5 carbon atoms or a linear alkyl group having 1 to 4 carbon atoms when the ring structure to which R L1 is bonded is a phenyl group (aromatic).
- a phenyl group aromatic
- Alkyl groups, linear alkoxy groups having 1 to 4 carbon atoms and linear alkenyl groups having 2 to 5 carbon atoms are preferred.
- the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.
- the alkenyl group is preferably selected from groups represented by any of the formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure.)
- n L1 is preferably 0 when importance is attached to the response speed, 2 or 3 is preferred for improving the upper limit temperature of the nematic phase, and 1 is preferred for balancing these. In order to satisfy the properties required for the composition, it is preferable to combine compounds having different values.
- a L1 , A L2, and A L3 are preferably aromatic when it is required to increase ⁇ n, and are preferably aliphatic for improving the response speed, and 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 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 -It preferably represents a diyl group or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, and more preferably represents the following structure:
- it represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group.
- Z L1 and Z L2 are preferably single bonds when the response speed is important.
- the number of halogen atoms in the molecule is preferably 0 or 1.
- the compound represented by the general formula (L) is preferably a compound selected from the group of compounds represented by the general formulas (L-1) to (L-7).
- R L11 and R L12 each independently represent the same meaning as R L1 and R L2 in General Formula (L), except for the compound represented by General Formula (i)).
- R L11 and R L12 are preferably a linear alkyl group having 1 to 4 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 4 carbon atoms. .
- the compound represented by the general formula (L-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the compound represented by the general formula (L-1) is the following compound.
- the viscosity of the liquid crystal composition can be reduced.
- the composition ratio in the composition is lowered. For this reason, the one where the upper limit of content is low is desirable.
- the lower limit of the preferred content is 1%, 2%, 3%, 5%, 7%, 10%, and preferably with respect to the total amount of the composition of the present invention.
- the upper limit value of the content is 20%, 18%, 16%, 14%, 13%, 12%, 11% with respect to the total amount of the composition of the present invention. 10% and 8%.
- the above lower limit value is preferably high and the upper limit value is preferably high. Furthermore, when the composition of the present invention requires a high Tni and a composition having good temperature stability, it is preferable that the lower limit value is moderate and the upper limit value is moderate. When it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value is low and the upper limit value is low.
- the compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-1).
- R L12 represents the same meaning as in formula (L-1), except for the compound represented by formula (i)).
- the compound represented by the general formula (L-1-1) is a compound selected from the group of compounds represented by the formula (L-1-1.1) or the formula (L-1-1.2). Is preferable, and a compound represented by the formula (L-1-1.2) is preferable.
- the lower limit of the preferable content of the compound represented by the formula (L-1-1.2) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, and 10%.
- the upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention. %, 5%, 3%.
- the compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-2).
- R L12 represents the same meaning as in formula (L-1), except for the compound represented by formula (i)).
- the lower limit of the preferable content of the compound represented by the formula (L-1-2) with respect to the total amount of the composition of the present invention is 1%, 5%, 8%, 10% 13%, 15%, 17%, 20%.
- the upper limit of the preferable content is 20%, 18%, 16%, 14%, 13%, 12%, and 11% with respect to the total amount of the composition of the present invention. %, 10%, and 8%.
- the compound represented by the general formula (L-1-2) is a compound selected from the group of compounds represented by the formula (L-1-2.1) or the formula (L-1-2.2). Preferably, it is a compound represented by the formula (L-1-2.2).
- the lower limit of the preferable content of the compound represented by the formula (L-1-2.2) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, and 10%.
- the upper limit of the preferable content is 20%, 18%, 16%, and 14% with respect to the total amount of the composition of the present invention. %, 13%, 12%, 11%, 10%, and 8%.
- the lower limit of the total content of the compound represented by the formula (i-23) and the compound represented by the formula (L-1-2.2) with respect to the total amount of the composition of the present invention is 1 %, 5%, 8%, 10%, 13%, 15%, 17%, and 20%.
- the upper limit of the preferable content is 20%, 18%, 16%, 14%, 13%, 12%, and 11% with respect to the total amount of the composition of the present invention. %, 10%, and 8%.
- the compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-3).
- R L13 and R L14 each independently represents an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 8 carbon atoms.
- R L13 and R L14 are preferably a linear alkyl group having 1 to 4 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 4 carbon atoms. .
- the lower limit of the preferable content of the compound represented by the formula (L-1-3) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, and the preferable upper limit of the content is 20%, 18%, 16%, 14%, 13%, 12% 11%, 10%, and 8%.
- the compound represented by the formula (L-1-3.1) is preferable because the response speed of the composition of the present invention is particularly improved.
- the lower limit of the preferable content of the compound represented by the formula (L-1-3.1) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, and the upper limit of the preferable content is 20%, 18%, 16%, 14%, 13%, 12% 11%, 10%, 8%.
- the compound represented by the general formula (L-2) is the following compound.
- R L21 and R L22 each independently represent the same meaning as R L1 and R L2 in the general formula (L).
- R L21 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms
- R L22 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom.
- An alkoxy group of 1 to 4 is preferable.
- the compound represented by the general formula (L-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (L-2) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7% and 10%.
- the upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention. %, 5%, 3%.
- the compound represented by the general formula (L-2) is preferably a compound selected from the group of compounds represented by the formulas (L-2.1) to (L-2.6).
- a compound represented by formula (L-2.1), formula (L-2.3), formula (L-2.4) and formula (L-2.6) is preferred.
- the compound represented by the general formula (L-3) is the following compound.
- R L31 and R L32 each independently represent the same meaning as R L1 and R L2 in General Formula (L).
- R L31 and R L32 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (L-3) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (L-3) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7% and 10%.
- the upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention. %, 5%, 3%.
- the effect is high when the content is set to be large.
- the effect is high when the content is set low.
- the compound represented by the general formula (L-3) is preferably a compound selected from the group of compounds represented by the formulas (L-3.1) to (L-3.4).
- a compound represented by the formula (L-3.7) from (L-3.2) is preferable.
- the compound represented by the general formula (L-4) is the following compound.
- R L41 and R L42 each independently represent the same meaning as R L1 and R L2 in General Formula (L).
- R L41 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms
- R L42 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom.
- An alkoxy group of 1 to 4 is preferable.
- the compound represented by the general formula (L-4) can be used alone, or two or more compounds can be used in combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the content of the compound represented by the general formula (L-4) is low-temperature solubility, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, It is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the lower limit of the preferable content of the compound represented by the formula (L-4) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40% .
- the upper limit of the preferable content of the compound represented by the formula (L-4) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. 20%, 15%, 10%, 5%.
- the compound represented by general formula (L-4) is preferably a compound represented by formula (L-4.1) to formula (L-4.3), for example.
- the formula (L-4.2) Even if it contains a compound represented by formula (L-4.1), it contains both a compound represented by formula (L-4.1) and a compound represented by formula (L-4.2). Or all of the compounds represented by formulas (L-4.1) to (L-4.3) may be included.
- the lower limit of the preferable content of the compound represented by formula (L-4.1) or formula (L-4.2) with respect to the total amount of the composition of the present invention is 3%, Yes, 7%, 9%, 11%, 12%, 13%, 18%, 21%, and the preferred upper limit is 45, 40% , 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8% .
- the amount of both compounds relative to the total amount of the composition of the present invention is The lower limit of the preferred content is 15%, 19%, 24%, and 30%, and the preferred upper limit is 45, 40%, 35%, and 30%. Yes, 25%, 23%, 20%, 18%, 15%, 13%.
- the compound represented by the general formula (L-4) is preferably, for example, a compound represented by the formula (L-4.4) to the formula (L-4.6). It is preferable that it is a compound represented by this.
- the formula (L -4.5) contains both the compound represented by formula (L-4.4) and the compound represented by formula (L-4.5). May be.
- the lower limit of the preferable content of the compound represented by the formula (L-4.4) or the formula (L-4.5) with respect to the total amount of the composition of the present invention is 3%, Yes, 7%, 9%, 11%, 12%, 13%, 18%, 21%.
- Preferred upper limit values are 45, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13% %, 10%, and 8%.
- the amount of both compounds relative to the total amount of the composition of the present invention is The lower limit of the preferred content is 15%, 19%, 24%, and 30%, and the preferred upper limit is 45, 40%, 35%, and 30%. Yes, 25%, 23%, 20%, 18%, 15%, 13%.
- the compound represented by the general formula (L-4) is preferably a compound represented by the formula (L-4.7) to the formula (L-4.10), and particularly the formula (L-4.
- the compound represented by 9) is preferred.
- the compound represented by the general formula (L-5) is the following compound.
- R L51 and R L52 each independently represent the same meaning as R L1 and R L2 in the general formula (L).
- R L51 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms
- R L52 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom.
- An alkoxy group of 1 to 4 is preferable.
- the compound represented by the general formula (L-5) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the content of the compound represented by the general formula (L-5) includes solubility at low temperature, transition temperature, electrical reliability, birefringence index, process suitability, dripping marks, It is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the lower limit of the preferable content of the compound represented by the formula (L-5) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40% .
- the upper limit of the preferable content of the compound represented by the formula (L-5) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. 20%, 15%, 10%, 5%.
- the compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.1) or (L-5.2), and in particular, the compound represented by the formula (L-5. It is preferable that it is a compound represented by 1).
- the lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%.
- the upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.
- the compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.3) or the formula (L-5.4).
- the lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%.
- the upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.
- the compound represented by the general formula (L-5) is preferably a compound selected from the group of compounds represented by the formulas (L-5.5) to (L-5.7).
- the compound represented by L-5.7) is preferred.
- the lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%.
- the upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.
- the compound represented by the general formula (L-6) is the following compound.
- R L61 and R L62 each independently represent the same meaning as R L1 and R L2 in the general formula (L), and X L61 and X L62 each independently represent a hydrogen atom or a fluorine atom.
- R L61 and R L62 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and one of X L61 and X L62 is a fluorine atom and the other is a hydrogen atom. Is preferred.
- the compound represented by the general formula (L-6) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
- the lower limit of the preferable content of the compound represented by the formula (L-6) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40% .
- the upper limit of the preferable content of the compound represented by the formula (L-6) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. 20%, 15%, 10%, 5%.
- the compound represented by the general formula (L-6) is preferably a compound represented by the formula (L-6.1) to the formula (L-6.9).
- the compound represented by the general formula (L-6) is preferably, for example, a compound represented by the formula (L-6.10) to the formula (L-6.17).
- a compound represented by L-6.11) is preferable.
- the lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%.
- the upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.
- the compound represented by the general formula (L-7) is the following compound.
- R L71 and R L72 each independently represent the same meaning as R L1 and R L2 in Formula (L), A L71 and A L72 is A L2 and in the general formula (L) independently A L3 represents the same meaning, but the hydrogen atoms on A L71 and A L72 may be each independently substituted with a fluorine atom, Z L71 represents the same meaning as Z L2 in formula (L), X L71 and X L72 each independently represent a fluorine atom or a hydrogen atom.
- R L71 and R L72 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and
- a L71 and A L72 Are each independently preferably a 1,4-cyclohexylene group or a 1,4-phenylene group, the hydrogen atoms on A L71 and A L72 may be each independently substituted with a fluorine atom, and
- the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, and four kinds.
- the content of the compound represented by the general formula (L-7) includes solubility at low temperature, transition temperature, electrical reliability, birefringence index, process suitability, dripping marks, It is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the lower limit of the preferable content of the compound represented by the formula (L-7) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 14%, 16%, 20%.
- the upper limit of the preferable content of the compound represented by the formula (L-7) with respect to the total amount of the composition of the present invention is 30%, 25%, 23%, and 20%. 18%, 15%, 10%, 5%.
- the content of the compound represented by formula (L-7) is preferably increased, and when an embodiment with low viscosity is desired, the content is It is preferable to reduce the amount.
- the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.1) to the formula (L-7.4), and the formula (L-7. It is preferable that it is a compound represented by 2).
- the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.11) to the formula (L-7.13). It is preferable that it is a compound represented by 11).
- the compound represented by the general formula (L-7) is a compound represented by the formula (L-7.21) to the formula (L-7.23).
- a compound represented by formula (L-7.21) is preferable.
- the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.31) to the formula (L-7.34), and the formula (L-7. 31) or / and a compound represented by the formula (L-7.32).
- the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.41) to the formula (L-7.44), and the formula (L-7. 41) or / and a compound represented by formula (L-7.42).
- the lower limit of the preferable total content of the compounds represented by the general formulas (i), (L) and (N) with respect to the total amount of the composition of the present invention is 80% and 85%. Yes, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% Yes, 100%.
- the upper limit of the preferable content is 100%, 99%, 98%, and 95%.
- the lower limit of the preferable content is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96% 97%, 98%, 99%, 100%.
- the upper limit of the preferable content is 100%, 99%, 98%, and 95%.
- composition of the present invention preferably does not contain a compound having a structure in which oxygen atoms such as a peracid (—CO—OO—) structure are bonded in the molecule.
- the content of the compound having a carbonyl group is preferably 5% or less, more preferably 3% or less with respect to the total mass of the composition. Preferably, it is more preferably 1% or less, and most preferably not substantially contained.
- the content of the compound substituted with chlorine atoms is preferably 15% or less, preferably 10% or less, based on the total mass of the composition. % Or less, preferably 5% or less, more preferably 3% or less, and still more preferably substantially not contained.
- the content of a compound in which all the ring structures in the molecule are 6-membered rings is 80% relative to the total mass of the composition. % Or more, more preferably 90% or more, still more preferably 95% or more, and the composition is composed only of a compound in which all of the ring structures in the molecule are all 6-membered rings. Most preferably.
- the content of the compound having a cyclohexenylene group as a ring structure, and the content of the compound having a cyclohexenylene group as the total mass of the composition is preferably 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and still more preferably not contained.
- the content of a compound having a 2-methylbenzene-1,4-diyl group in the molecule, in which a hydrogen atom may be substituted with a halogen may be reduced.
- the content of the compound having a 2-methylbenzene-1,4-diyl group in the molecule is preferably 10% or less, more preferably 8% or less, based on the total mass of the composition. It is more preferably 5% or less, further preferably 3% or less, and still more preferably substantially not contained.
- substantially not contained in the present invention means that it is not contained except for unintentionally contained matter.
- the alkenyl group when the compound contained in the composition of the first embodiment of the present invention has an alkenyl group as a side chain, when the alkenyl group is bonded to cyclohexane, the alkenyl group has 2 to 5 carbon atoms.
- the alkenyl group is bonded to benzene, the number of carbon atoms of the alkenyl group is preferably 4 to 5, and the unsaturated bond of the alkenyl group and benzene are directly bonded. Preferably not.
- the composition of 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 such as a PS mode, a transverse electric field type PSA mode, or a transverse electric field type PSVA mode.
- the polymerizable compound that can be used include a photopolymerizable monomer that undergoes polymerization by energy rays such as light.
- the structure has, for example, a liquid crystal skeleton in which a plurality of six-membered rings such as biphenyl derivatives and terphenyl derivatives are connected. Examples thereof include a polymerizable compound. More specifically, the general formula (M)
- R 201 is, P 201 -Sp 201 - represents, R 202 is, P 202 -Sp 202 - represents a.
- P 201 and P 202 each independently represent formula (R-1) to formula (R-15)
- P 201 and P 202 may be the same or different.
- Sp 201 and Sp 202 each independently represent a single bond or an alkylene group having 1 to 15 carbon atoms, and one or two or more —CH 2 — in the alkylene group is not directly adjacent to an oxygen atom. May be substituted with —O—, —OCO— or —COO—, but each independently represents a single bond or a carbon number in which one methylene may be substituted with —O—, —OCO— or —COO—.
- at least one is preferably a single bond, one is a single bond and the other is an alkylene group having 1 to 4 carbon atoms, or — O— (CH 2 ) s — is preferable.
- an alkylene group having 1 to 4 carbon atoms is preferable, and s is preferably 1 to 4. It is also preferable that both Sp 201 and Sp 202 are single bonds.
- M 201 , M 202 and M 203 are each independently a phenyl group, 1,4-phenylene group, benzene-1,2,4-triyl group, benzene-1,2,4,6-tetrayl group, 1, 4-cyclohexylene group, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, naphthyl 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 being unsubstituted or an alkyl group having 1 to 12 carbon atoms, 1 carbon atom May be substituted with an alkoxyl group of ⁇ 12, halogen, cyano group or nitro group, but each independently is unsubstituted or substituted with an alkyl group
- n 201 , n 202 and n 203 each independently represents an integer of 0 to 3, and the total number of n 201 and n 203 is 2 or more, but n 202 is preferably 0, 1 or 2 0 or 1 is more preferable.
- n 201 and n 203 are each independently preferably 0, 1 or 2, more preferably 1 or 2, and the total number of n 201 and n 203 is preferably 2 or 3.
- a plurality of existing P 201 , P 202 , Sp 201 , Sp 202 , Z 201, and M 202 may be the same or different.
- the composition of the present invention may contain at least one polymerizable compound represented by the general formula (M), preferably 1 to 5 types, and preferably 1 to 3 types. Further preferred.
- the content of the polymerizable compound represented by the general formula (M) is too large, the energy required for the polymerization of the polymerizable compound increases, and the amount of the polymerizable compound that remains without being polymerized increases.
- the content is preferably 0.01 to 2.00% by mass, and more preferably 0.05 to 1.00% by mass. 0.10 to 0.50% by mass is particularly preferable.
- the ring structure between Sp 201 and Sp 202 is the formula (XXa-1) to the 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 preferable for a PSA mode liquid crystal display element because of its orientation regulating force after polymerization.
- 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 202 is 1, for example, a polymerizable compound such as the formula (M31) to the formula (M52) 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 preferable for a PSA mode liquid crystal display element because of its orientation regulating force after polymerization.
- n 201 is 1, n 202 is 1, and n 203 is 2, for example, a polymerizable compound such as formula (M301) to formula (M320) is 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 .
- the polymerizable compound represented by the general formula (M) containing these skeletons is preferable for a PSA mode liquid crystal display element because of its orientation regulating force after polymerization.
- 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.
- composition in the present invention can further contain a compound represented by the general formula (Q).
- RQ represents a straight-chain alkyl group or a branched-chain alkyl group having 1 to 22 carbon atoms, and one or more CH 2 groups in the alkyl group are —O—so that oxygen atoms are not directly adjacent to each other.
- MQ represents a trans-1,4-cyclohexylene group, a 1,4
- the compound represented by the general formula (Q) is preferably a compound represented by the following general formula (Qa) to general formula (Qd).
- R Q1 is preferably a linear or branched alkyl group having 1 to 10 carbon atoms
- R Q2 is preferably a linear or branched alkyl group having 1 to 20 carbon atoms
- R Q3 is A straight-chain alkyl group having 1 to 8 carbon atoms, a branched-chain alkyl group, a straight-chain alkoxy group or a branched-chain alkoxy group is preferred
- L Q is preferably a straight-chain alkylene group or branched-chain alkylene group having 1 to 8 carbon atoms.
- compounds represented by general formula (Qa) to general formula (Qd) compounds represented by general formula (Qc) and general formula (Qd) are more preferable.
- the compound represented by the general formula (Q) preferably contains one or two compounds, more preferably contains one to five kinds, and the content thereof is from 0.001. It is preferably 1%, more preferably 0.001 to 0.1%, and particularly preferably 0.001 to 0.05%.
- the polymerizable compound contained therein is polymerized by ultraviolet irradiation to impart liquid crystal alignment ability, and the amount of transmitted light is controlled using the birefringence of the composition.
- liquid crystal display elements As liquid crystal display elements, AM-LCD (active matrix liquid crystal display element), TN (nematic liquid crystal display element), STN-LCD (super twisted nematic liquid crystal display element), OCB-LCD and IPS-LCD (in-plane switching liquid crystal display element)
- AM-LCD active matrix liquid crystal display element
- TN nematic liquid crystal display element
- STN-LCD super twisted nematic liquid crystal display element
- OCB-LCD OCB-LCD
- IPS-LCD in-plane switching liquid crystal display element
- 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 columnar spacers made of glass particles, plastic particles, alumina particles, a photoresist material, and the like. Thereafter, 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 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 for sandwiching the polymerizable compound-containing composition between the two substrates.
- a display device manufactured using the ODF method In the ODF liquid crystal display device manufacturing process, a sealant such as epoxy photothermal combination curing is drawn on a backplane or front plane substrate using a dispenser in a closed-loop bank shape, and then removed.
- a liquid crystal display element can be manufactured by bonding a front plane and a back plane after dropping a predetermined amount of the composition under air.
- the composition of the present invention can be suitably used because the composition can be stably dropped in the ODF process.
- an appropriate polymerization rate is desirable in order to obtain good alignment performance of liquid crystals. Therefore, active energy rays such as ultraviolet rays or electron beams are irradiated singly or in combination or sequentially.
- the method of polymerizing by is preferred.
- ultraviolet rays When ultraviolet rays are used, a polarized light source or a non-polarized light source may be used.
- the polymerization is carried out in a state where the polymerizable compound-containing composition is sandwiched between two substrates, at least the substrate on the irradiated surface side must be given adequate transparency to the active energy rays. Don't be.
- 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 polymerizable compound-containing 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.
- the pretilt angle of the liquid crystal display element can be controlled by the applied voltage.
- the pretilt angle is preferably controlled from 80 degrees to 89.9 degrees from the viewpoint of alignment stability and contrast.
- the temperature at the time of irradiation is preferably within a temperature range in which the liquid crystal state of the composition of the present invention is maintained.
- Polymerization is preferably performed at a temperature close to room temperature, that is, typically at a temperature of 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-ray to irradiate it is preferable to irradiate the ultraviolet-ray of the wavelength range which is not the absorption wavelength range of a 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 irradiating with ultraviolet rays is appropriately selected depending on the intensity of the irradiating ultraviolet rays.
- the liquid crystal display device using the composition of the present invention is useful for achieving both high-speed response and suppression of display failure, and is particularly useful for a liquid crystal display device for active matrix driving.
- VA mode, PSVA mode, PSA It can be applied to a mode, IPS mode or ECB mode liquid crystal display element.
- the measured characteristics are as follows.
- T ni Nematic phase-isotropic liquid phase transition temperature (° C.) ⁇ n: Refractive index anisotropy at 293K ⁇ : Dielectric anisotropy at 293K ⁇ : Viscosity at 293K (mPa ⁇ s) ⁇ 1 : rotational viscosity at 293 K (mPa ⁇ s) K 11 : Elastic constant of expansion at 293K (pN) K 33 : Elastic constant of bending at 293K (pN) VHR: Voltage holding ratio (%) at 333 K under conditions of frequency 60 Hz and applied voltage 5 V VHR (initial): A TEG (test element group) for evaluating electro-optical properties in which a composition sample was enclosed was measured under the same conditions as in the VHR measurement method described above.
- VHR (after heat resistance test): TEG (test element group) for evaluation of electro-optical properties in which a composition sample is enclosed is held in a thermostatic bath at 130 ° C. for 1 hour, and then measured under the same conditions as the above-described VHR measurement method. did.
- VHR (after UV20J): TEG (test element group) for evaluation of electro-optical properties in which a composition sample was enclosed was irradiated with UV light for 200 seconds with a high-pressure mercury lamp of 100 mW ⁇ cm ⁇ 2 (365 nm), and then the above-mentioned The measurement was performed under the same conditions as in the VHR measurement method.
- Burn-in The burn-in evaluation of the liquid crystal display element is performed until the afterimage of the fixed pattern reaches an unacceptable afterimage level when displaying the predetermined fixed pattern in the display area for an arbitrary test time and then displaying the entire screen uniformly.
- the test time was measured. 1) The test time referred to here indicates the display time of the fixed pattern, and the longer this time is, the more the afterimage is suppressed and the higher the performance. 2)
- the unacceptable afterimage level is a level at which an afterimage that is rejected in the shipment acceptance / rejection determination is observed.
- Sample A 1000 hours
- Sample B 500 hours
- Sample C 200 hours
- Sample D 100 hours Performance is A>B>C> D.
- Drop marks The evaluation of the drop marks of the liquid crystal display device was performed by visual observation of the drop marks that appeared white when the entire surface was displayed in black by the following five-step evaluation.
- Process suitability is determined by dropping a liquid crystal 50pL at a time, "0 to 100 times, 101 to 200 times, 201 to 300 times, " 100 times at a time using a constant volume metering pump in the ODF process. The mass of the liquid crystal for each 100 drops was measured and evaluated by the number of drops at which the mass variation reached a size that could not be adapted to the ODF process.
- Solubility at low temperature In order to evaluate the solubility at low temperature, after preparing the composition, 1 g of the composition was weighed into a 2 mL sample bottle, and the next operation state “ ⁇ 20 ° C. (held for 1 hour) in a temperature-controlled test tank. ⁇ Temperature rise (0.1 ° C / min) ⁇ 0 ° C (1 hour hold) ⁇ Temperature rise (0.1 ° C / min) ⁇ 20 ° C (1 hour hold) ⁇ Temperature drop ( ⁇ 0.1 ° C / every minute) Min) ⁇ 0 ° C. (hold for 1 hour) ⁇ fall temperature ( ⁇ 0.1 ° C./min) ⁇ 20° C.
- the LC-1, LC-2 and LC-3 of the examples had the same VHR before and after UV irradiation compared to the comparative examples RLC-1 and RLC-2. Further, as a result of the volatilization test, LC-1, LC-2 and LC-3 as examples showed a clear improvement as compared with RLC-1 and RLC-2 as comparative examples. Further, when RLC-1 and LC-2 were separately manufactured by ODF method, a liquid crystal display element was found, and only RLC-1 showed peripheral unevenness and a correlation with the volatility test. From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that does not cause display defects such as peripheral unevenness while maintaining UV resistance.
- VA liquid crystal display element By injecting these liquid crystal compositions into a cell with ITO coated with a polyimide alignment film that induces homeotropic alignment with a cell gap of 3.2 ⁇ m, respectively, a vertical alignment (VA) liquid crystal display element is obtained. Obtained. These VA liquid crystal display elements were confirmed to exhibit a response speed correlated with physical property values. About these VA liquid crystal display elements, the VHR measurement before and after UV irradiation was implemented.
- the LC-4, LC-5, and LC-6 which are examples, have the same VHR before UV irradiation as compared to the comparative example RLC-3, but the VHR before UV irradiation is greatly improved. It was. Further, as a result of the volatilization test, the LC-4, LC-5 and LC-6 as examples showed a clear improvement as compared with the comparative example RLC-3. Further, when RLC-3 and LC-4 were separately manufactured as liquid crystal display elements by the ODF method, peripheral unevenness was observed only in RLC-3, and a correlation with the volatility test was observed. From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that does not cause display defects such as peripheral unevenness while maintaining UV resistance.
- VA liquid crystal display element By injecting these liquid crystal compositions into a cell with ITO coated with a polyimide alignment film that induces homeotropic alignment with a cell gap of 3.2 ⁇ m, respectively, a vertical alignment (VA) liquid crystal display element is obtained. Obtained. These VA liquid crystal display elements were confirmed to exhibit a response speed correlated with physical property values. About these VA liquid crystal display elements, the VHR measurement before and after UV irradiation was implemented.
- Examples LC-7, LC-8 and LC-9 have the same VHR before UV irradiation as compared to RLC-4 as a comparative example, but VHR before UV irradiation is greatly improved. It was. Further, as a result of the volatilization test, the LC-7, LC-8 and LC-9 as examples showed a clear improvement as compared with the RLC-4 as a comparative example. Further, when RLC-4, LC-7 and LC-8 were separately prepared by ODF, a liquid crystal display element was produced. As a result, peripheral irregularities were observed only in RLC-4, and a correlation with the volatility test was observed.
- the liquid crystal composition of the present invention is an excellent liquid crystal composition that does not cause display defects such as peripheral unevenness while maintaining UV resistance.
- Liquid crystal compositions of RLC-5 (Comparative Example 5), LC-10 (Example 10), LC-11 (Example 11), and LC-12 (Example 12) were prepared, and their physical properties were measured. The composition of the liquid crystal composition and the results of its physical property values are shown in Table 9.
- VA liquid crystal display element By injecting these liquid crystal compositions into a cell with ITO coated with a polyimide alignment film that induces homeotropic alignment with a cell gap of 3.2 ⁇ m, respectively, a vertical alignment (VA) liquid crystal display element is obtained. Obtained. These VA liquid crystal display elements were confirmed to exhibit a response speed correlated with physical property values. About these VA liquid crystal display elements, the VHR measurement before and after UV irradiation was implemented.
- Example LC-10, LC-11 and LC-12 VHR before and after UV irradiation was equivalent as compared with RLC-5 as a comparative example. Further, as a result of the volatilization test, the LC-10, LC-11 and LC-12 as examples showed a clear improvement as compared with the RLC-5 as a comparative example. Further, when RLC-5 and LC-10 were separately manufactured by the ODF method, a liquid crystal display element was produced. As a result, only RLC-5 was found to have peripheral unevenness and correlated with the volatility test. From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that does not cause display defects such as peripheral unevenness while maintaining UV resistance.
- VA liquid crystal display element By injecting these liquid crystal compositions into a cell with ITO coated with a polyimide alignment film that induces homeotropic alignment with a cell gap of 3.2 ⁇ m, respectively, a vertical alignment (VA) liquid crystal display element is obtained. Obtained. These VA liquid crystal display elements were confirmed to exhibit a response speed correlated with physical property values. About these VA liquid crystal display elements, the VHR measurement before and after UV irradiation was implemented.
- the LC-13, LC-14, and LC-15 of the examples had the same VHR before and after UV irradiation compared to the comparative example RLC-6. Further, as a result of the volatilization test, the LC-13, LC-14 and LC-15 as examples showed a clear improvement as compared with the RLC-6 as a comparative example. Further, when RLC-6 and LC-14 were separately prepared for the liquid crystal display element by ODF method, peripheral irregularities were observed only in RLC-6, and a correlation with the volatility test was observed. From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that does not cause display defects such as peripheral unevenness while maintaining UV resistance.
- Example 16 to Example 26 A polymerizable compound was added to the liquid crystal compositions used in Examples 1 to 15 to prepare polymerizable compound-containing liquid crystal compositions of MLC-1 (Example 16) to MLC-11 (Example 26), Volatilization tests were performed. In addition, the physical-property value of the polymeric compound containing liquid crystal composition was not changing substantially with the liquid crystal composition before polymeric compound addition. Table 13 and Table 14 show the composition of the polymerizable compound-containing liquid crystal composition and the results of the volatilization test.
- the liquid crystal composition of the present invention was an excellent liquid crystal composition that did not cause display defects such as peripheral unevenness while maintaining UV resistance regardless of the presence or absence of a polymerizable compound.
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Abstract
Description
で表される化合物を1種又は2種以上含有し、液晶組成物中の含有量が25質量%以上である誘電率異方性が負の液晶組成物、当該組成物を使用した液晶表示素子及び当該組成物を使用したVA(Virtical Alignment)方式素子、FFS(Fringe Field Switching)、PSAモード、PSVAモード、IPSモード、又はECBモード素子を提供する。
特に式(R1)及び(R2)で表される基であることが好ましい。
AN11、AN12、AN21、AN22、AN31及びAN32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。)
(c) (c)ナフタレン-2,6-ジイル基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基又はデカヒドロナフタレン-2,6-ジイル基(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良い。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)及び基(c)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、
ZN11、ZN12、ZN21、ZN22、ZN31及びZN32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、
XN21は水素原子又はフッ素原子を表し、
TN31は-CH2-又は酸素原子を表し、
nN11、nN12、nN21、nN22、nN31及びnN32はそれぞれ独立して0~3の整数を表すが、nN11+nN12、nN21+nN22及びnN31+nN32はそれぞれ独立して1、2又は3であり、AN11~AN32、ZN11~ZN32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。)
一般式(N-1)、(N-2)及び(N-3)で表される化合物は、Δεが負でその絶対値が3よりも大きな化合物であることが好ましい。
一般式(N-11)及び一般式(N-12)で表される化合物として、下記の一般式(N-1a)~(N-1d)で表される化合物群を挙げることができる。
より具体的には、一般式(N-1)で表される化合物は一般式(N-1-1)~(N-1-21)で表される化合物群から選ばれる化合物であることが好ましい。
RN111は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、プロピル基又はペンチル基が好ましい。RN112は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基又はブトキシ基が好ましい。
RN121は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基、ブチル基又はペンチル基が好ましい。RN122は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、メチル基、プロピル基、メトキシ基、エトキシ基又はプロポキシ基が好ましい。
RN131は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN132は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN141及びRN142はそれぞれ独立して、炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、メチル基、プロピル基、エトキシ基又はブトキシ基が好ましい。
RN151及びRN152はそれぞれ独立して、炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましくエチル基、プロピル基又はブチル基が好ましい。
RN1101は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1102は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1111は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1112は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1121は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1122は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1131は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1132は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1141は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1142は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1151は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1152は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1161は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1162は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1171は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1172は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1181は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。RN1182は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、エトキシ基、プロポキシ基又はブトキシ基が好ましい。
RN1201及びRN1202はそれぞれ独立して、炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。
RN1211及びRN1212はそれぞれ独立して、炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、エチル基、プロピル基又はブチル基が好ましい。
nL1は0、1、2又は3を表し、
AL1、AL2及びAL3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。)
(c) (c)ナフタレン-2,6-ジイル基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基又はデカヒドロナフタレン-2,6-ジイル基(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良い。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)及び基(c)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、
ZL1及びZL2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、
nL1が2又は3であってAL2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、nL1が2又は3であってZL3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が、一般式(i)、一般式(N-1)、一般式(N-2)及び一般式(N-3)で表される化合物を除く。)
一般式(L)で表される化合物は単独で用いてもよいが、組み合わせて使用することもできる。組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの所望の性能に応じて適宜組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。あるいは本発明の別の実施形態では2種類であり、3種類であり、4種類であり、5種類であり、6種類であり、7種類であり、8種類であり、9種類であり、10種類以上である。
RL11及びRL12は、直鎖状の炭素原子数1~4のアルキル基、直鎖状の炭素原子数1~4のアルコキシ基及び直鎖状の炭素原子数2~4のアルケニル基が好ましい。
一般式(L-1-1)で表される化合物は、式(L-1-1.1)又は式(L-1-1.2)で表される化合物群から選ばれる化合物であることが好ましく、式(L-1-1.2)で表される化合物であることが好ましい。
本発明の組成物の総量に対しての式(L-1-2)で表される化合物の好ましい含有量の下限値は、1%であり、5%であり、8%であり、10%であり、13%であり、15%であり、17%であり、20%である。好ましい含有量の上限値は、本発明の組成物の総量に対して、20%であり、18%であり、16%であり、14%であり、13%であり、12%であり、11%であり、10%であり、8%である。
RL13及びRL14は、直鎖状の炭素原子数1~4のアルキル基、直鎖状の炭素原子数1~4のアルコキシ基及び直鎖状の炭素原子数2~4のアルケニル基が好ましい。
RL21は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、RL22は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましい。
RL31及びRL32はそれぞれ独立して炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましい。
RL41は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、RL42は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましい。)
一般式(L-4)で表される化合物は単独で使用することもできるが、2以上の化合物を組み合わせて使用することもできる。組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの求められる性能に応じて適宜組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類であり、2種類であり、3種類であり、4種類であり、5種類以上である。
RL51は炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、RL52は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましい。
一般式(L-5)で表される化合物は、式(L-5.1)又は式(L-5.2)で表される化合物であることが好ましく、特に、式(L-5.1)で表される化合物であることが好ましい。
RL61及びRL62はそれぞれ独立して炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が好ましく、XL61及びXL62のうち一方がフッ素原子他方が水素原子であることが好ましい。
式中、RL71及びRL72はそれぞれ独立して炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基又は炭素原子数1~4のアルコキシ基が好ましく、AL71及びAL72はそれぞれ独立して1,4-シクロヘキシレン基又は1,4-フェニレン基が好ましく、AL71及びAL72上の水素原子はそれぞれ独立してフッ素原子によって置換されていてもよく、QL71は単結合又はCOO-が好ましく、単結合が好ましく、XL71及びXL72は水素原子が好ましい。
P201及びP202はそれぞれ独立的に、式(R-1)から式(R-15)
本発明の組成物にモノマーを添加する場合において、重合開始剤が存在しない場合でも重合は進行するが、重合を促進するために重合開始剤を含有していてもよい。重合開始剤としては、ベンゾインエーテル類、ベンゾフェノン類、アセトフェノン類、ベンジルケタール類、アシルフォスフィンオキサイド類等が挙げられる。
RQは炭素原子数1から22の直鎖アルキル基又は分岐鎖アルキル基を表し、該アルキル基中の1つ又は2つ以上のCH2基は、酸素原子が直接隣接しないように、-O-、-CH=CH-、-CO-、-OCO-、-COO-、-C≡C-、-CF2O-、-OCF2-で置換されてよいが、炭素原子数1から10の直鎖アルキル基、直鎖アルコキシ基、1つのCH2基が-OCO-又は-COO-に置換された直鎖アルキル基、分岐鎖アルキル基、分岐アルコキシ基、1つのCH2基が-OCO-又は-COO-に置換された分岐鎖アルキル基が好ましく、炭素原子数1から20の直鎖アルキル基、1つのCH2基が-OCO-又は-COO-に置換された直鎖アルキル基、分岐鎖アルキル基、分岐アルコキシ基、1つのCH2基が-OCO-又は-COO-に置換された分岐鎖アルキル基が更に好ましい。MQはトランス-1,4-シクロへキシレン基、1,4-フェニレン基又は単結合を表すが、トランス-1,4-シクロへキシレン基又は1,4-フェニレン基が好ましい。
Δn :293Kにおける屈折率異方性
Δε :293Kにおける誘電率異方性
η :293Kにおける粘度(mPa・s)
γ1 :293Kにおける回転粘度(mPa・s)
K11 :293Kにおける広がりの弾性定数(pN)
K33 :293Kにおける曲がりの弾性定数(pN)
VHR:周波数60Hz,印加電圧5Vの条件下で333Kにおける電圧保持率(%)
VHR(初期):組成物サンプルを封入した電気光学特性評価用TEG(テスト・エレメント・グループ)を上述のVHR測定方法と同条件で測定した。
VHR(耐熱試験後):組成物サンプルを封入した電気光学特性評価用TEG(テスト・エレメント・グループ)を130℃の恒温槽中に1時間保持した後、上述のVHR測定方法と同条件で測定した。
VHR(UV20J後):組成物サンプルを封入した電気光学特性評価用TEG(テスト・エレメント・グループ)を100mW・cm-2(365nm)の高圧水銀ランプで200秒UV光を照射した後、上述のVHR測定方法と同条件で測定した。
焼き付き :
液晶表示素子の焼き付き評価は、表示エリア内に所定の固定パターンを任意の試験時間表示させた後に、全画面均一な表示を行ったときの固定パターンの残像が、許容できない残像レベルに達するまでの試験時間を計測した。
1)ここで言う試験時間とは固定パターンの表示時間を示し、この時間が長いほど残像の発生が抑制されており、性能が高いことを示している。
2)許容できない残像レベルとは、出荷合否判定で不合格となる残像が観察されるレベルである。
例)
サンプルA:1000時間
サンプルB:500時間
サンプルC:200時間
サンプルD:100時間
性能は、A>B>C>Dである。
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5段階評価で行った。
4:滴下痕ごく僅かに有るも許容できるレベル(良)
3:滴下痕僅かに有り、合否判定のボーダーラインレベル(条件付で可)
2:滴下痕有り許容できないレベル(不可)
1:滴下痕有りかなり劣悪(悪)
プロセス適合性 :
プロセス適合性は、ODFプロセスにおいて、定積計量ポンプを用いて、液晶を1回に50pLずつ「0~100回、101~200回、201~300回、・・・・」と100回ずつ滴下したときの各100回滴下分の液晶の質量を計測し、質量のバラつきがODFプロセスに適合できない大きさに達した滴下回数で評価した。
滴下回数が多いほど長時間にわたって安定的に滴下可能であり、プロセス適合性が高いといえる。
例)
サンプルA:95000回
サンプルB:40000回
サンプルC:100000回
サンプルD:10000回
性能は、C>A>B>Dである。
低温での溶解性評価は、組成物を調製後、2mLのサンプル瓶に組成物を1g秤量し、これに温度制御式試験槽の中で、次の運転状態「-20℃(1時間保持)→昇温(0.1℃/毎分)→0℃(1時間保持)→昇温(0.1℃/毎分)→20℃(1時間保持)→降温(-0.1℃/毎分)→0℃(1時間保持)→降温(-0.1℃/毎分)→-20℃」を1サイクルとして温度変化を与え続け、目視にて組成物からの析出物の発生を観察し、析出物が観察されたときの試験時間を計測した。
試験時間が長いほど長時間にわたって安定して液晶相を保っており、低温での溶解性が良好である。
例)
サンプルA:72時間
サンプルB:600時間
サンプルC:384時間
サンプルD:1440時間
性能は、D>B>C>Aである。
液晶材料の揮発性評価は、清浄なガラス基板上に10mg程度の液晶材料を滴下し、5Paで60分真空状態に静置することで実施した。真空状態を解除した後に液晶材料を取り出し、ガスクロマトグラフ分析を実施した。ガスクロマトグラフ分析結果から、各成分の検出量が初期状態と比較して最大どの程度変動しているかで判定を実施した。
判定基準)
「○」・・・最大で5%未満
「△」・・・最大で5%以上10%未満
「×」・・・最大で10%以上20%未満
「××」・・・最大で20%以上50%未満
「×××」・・・最大で50%以上
例)
サンプルA:○
サンプルB:×
サンプルC:△
サンプルD:××
性能は、A>C>B>Dである。
尚、実施例において化合物の記載について以下の略号を用いる。
(環構造)
(連結構造)
(比較例1、比較例2、実施例1、実施例2及び実施例3)
RLC-1(比較例1)、RLC-2(比較例2)、LC-1(実施例1)、LC-2(実施例2)及びLC-3(実施例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3のとおりであった。
次に、これらの液晶組成物をそれぞれセルギャップ3.2μmでホメオトロピック配向を誘起するポリイミド配向膜を塗布したITO付きセルに真空注入法で注入することで、垂直配向(VA)液晶表示素子を得た。これらのVA液晶表示素子は、物性値と相関する応答速度を示すことが確認された。これらのVA液晶表示素子について、UV照射前後のVHR測定を実施した。
また、液晶組成物に対して揮発性試験を実施した。VHRと揮発性試験の結果を表4に示す。
(比較例3、実施例4、実施例5及び実施例6)
RLC-3(比較例3)、LC-4(実施例4)、LC-5(実施例5)及びLC-6(実施例6)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5のとおりであった。
(比較例4、実施例7、実施例8及び実施例9)
RLC-4(比較例4)、LC-7(実施例7)、LC-8(実施例8)及びLC-9(実施例9)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7のとおりであった。
(比較例5、実施例10、実施例11及び実施例12)
RLC-5(比較例5)、LC-10(実施例10)、LC-11(実施例11)及びLC-12(実施例12)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9のとおりであった。
(比較例6、実施例13、実施例14及び実施例15)
RLC-6(比較例6)、LC-13(実施例13)、LC-14(実施例14)及びLC-15(実施例15)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11のとおりであった。
(実施例16から実施例26)
実施例1から15で用いた液晶組成物に対して重合性化合物を添加し、MLC-1(実施例16)からMLC-11(実施例26)の重合性化合物含有液晶組成物を調製し、揮発試験を実施した。なお、重合性化合物含有液晶組成物の物性値は重合性化合物添加前の液晶組成物とほぼ変化していなかった。重合性化合物含有液晶組成物の構成と揮発試験の結果は表13および表14のとおりであった。
Claims (10)
- 一般式(i)におけるRi1及びRi2に含まれる炭素原子数の合計が7個以上である化合物の液晶組成物中の含有量が25質量%以上である請求項1に記載の液晶組成物。
- 更に、一般式(N-1)、(N-2)及び(N-3)
AN11、AN12、AN21、AN22、AN31及びAN32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-N=に置換されていてもよい。)及び
(c) ナフタレン-2,6-ジイル基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基又はデカヒドロナフタレン-2,6-ジイル基(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=に置換されていても良い。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)及び基(c)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、
ZN11、ZN12、ZN21、ZN22、ZN31及びZN32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、
XN21は水素原子又はフッ素原子を表し、
TN31は-CH2-又は酸素原子を表し、
nN11、nN12、nN21、nN22、nN31及びnN32はそれぞれ独立して0,1,2又は3を表すが、nN11+nN12、nN21+nN22及びnN31+nN32はそれぞれ独立して1、2又は3であるが、nN11及び/又はnN12が2又は3であってAN11、AN12、ZN11、ZN12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、nN21及び/又はnN22が2又は3であってAN21、AN22、ZN21、ZN22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、nN31及び/又はnN32が2又は3であってAN31、AN32、ZN31、ZN32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。)
で表される化合物群から選ばれる化合物を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。 - 更に、一般式(L)
nL1は0、1、2又は3を表し、
AL1、AL2及びAL3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-N=に置換されていてもよい。)及び
(c) ナフタレン-2,6-ジイル基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基又はデカヒドロナフタレン-2,6-ジイル基(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=に置換されていても良い。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)及び基(c)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、
ZL1及びZL2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、
nL1が2又は3であってAL2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、nL1が2又は3であってZL2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が、一般式(i)で表される化合物、一般式(N-1)、一般式(N-2)及び一般式(N-3)で表される化合物を除く。)
で表される化合物から選ばれる化合物を1種又は2種以上含有する請求項1~3のいずれか一項に記載の液晶組成物。 - 一般式(i)におけるRi1がビニル基である化合物を1種又は2種以上含有する請求項1~4のいずれか一項に記載の液晶組成物。
- 重合性化合物を1種又は2種以上含有する請求項1~5のいずれか1項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0.14の範囲であり、25℃における粘度(η)が10から30mPa・sの範囲であり、25℃における回転粘性(γ1)が60から130mPa・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1~6のいずれか1項に記載の液晶組成物。
- 請求項1~7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1~7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1~7のいずれか1項に記載の液晶組成物を用いたVAモード、PSAモード、PSVAモード、IPSモード、FFSモード又はECBモード用液晶表示素子。
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