WO2014155485A1 - 液晶組成物、液晶表示素子及び液晶ディスプレイ - Google Patents
液晶組成物、液晶表示素子及び液晶ディスプレイ Download PDFInfo
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- 0 CC(CC1)CCC1C1COC(*c(cc2F)cc(F)c2F)CC1 Chemical compound CC(CC1)CCC1C1COC(*c(cc2F)cc(F)c2F)CC1 0.000 description 7
- MCWBDXJGUWGWFF-UHFFFAOYSA-N CCC(CC1)CCC1c(cc1)ccc1-c1ccc(-c(cc2F)cc(F)c2OC(F)(F)F)c(F)c1 Chemical compound CCC(CC1)CCC1c(cc1)ccc1-c1ccc(-c(cc2F)cc(F)c2OC(F)(F)F)c(F)c1 MCWBDXJGUWGWFF-UHFFFAOYSA-N 0.000 description 1
- YYERNJZLZGFATD-UHFFFAOYSA-N CCC(CC1)CCC1c1cc(F)c(-c(cc2)cc(F)c2F)c(F)c1 Chemical compound CCC(CC1)CCC1c1cc(F)c(-c(cc2)cc(F)c2F)c(F)c1 YYERNJZLZGFATD-UHFFFAOYSA-N 0.000 description 1
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
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- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
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- C09K2019/3422—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom the heterocyclic ring being a six-membered ring
Definitions
- the present invention relates to a nematic liquid crystal composition having a positive or negative dielectric anisotropy ( ⁇ ) useful as a liquid crystal display material, a liquid crystal display element using the same, and a liquid crystal display.
- ⁇ dielectric anisotropy
- Liquid crystal display elements are used in various measuring instruments, automobile panels, word processors, electronic notebooks, printers, computers, televisions, watches, advertisement display boards, etc., including clocks and calculators.
- Typical liquid crystal display methods include TN (twisted nematic) type, STN (super twisted nematic) type, vertical alignment type using TFT (thin film transistor), and IPS (in-plane switching) type.
- the liquid crystal composition used in these liquid crystal display elements is stable against external stimuli such as moisture, air, heat, light, etc., and exhibits a liquid crystal phase in the widest possible temperature range centering on room temperature. And a low driving voltage is required. Further, the liquid crystal composition is composed of several to several tens of kinds of compounds in order to optimize the dielectric anisotropy ( ⁇ ) and / or the refractive index anisotropy ( ⁇ n) for each display element. Yes.
- a liquid crystal composition having a negative ⁇ is used, and in a horizontal alignment type display such as a TN type, STN type, or IPS (in-plane switching) type, a liquid crystal composition having a positive ⁇ . Is used.
- a driving method in which a liquid crystal composition having a positive ⁇ is vertically aligned when no voltage is applied and a horizontal electric field is applied for display has been reported, and the necessity of a liquid crystal composition having a positive ⁇ has further increased. Yes.
- low voltage driving, high-speed response, and a wide operating temperature range are required in all driving systems.
- ⁇ has a positive or negative value, a large absolute value, a small viscosity ( ⁇ ), and a high nematic phase-isotropic liquid phase transition temperature (Tni).
- ⁇ n ⁇ d which is the product of ⁇ n and the cell gap (d)
- Tni nematic phase-isotropic liquid phase transition temperature
- Examples of the composition of a liquid crystal composition aimed at high-speed response include, for example, a compound represented by the following formula (A-1) or (A-2) below, in which ⁇ is a positive liquid crystal compound, and ⁇ is neutral:
- a liquid crystal composition using a combination of compounds represented by the following formula (B), which is a liquid crystal compound, is disclosed.
- the characteristics of these liquid crystal compositions are that a liquid crystal compound having a positive ⁇ has a —CF 2 O— structure, and a liquid crystal compound having a negative ⁇ has an alkenyl group. These characteristics are widely known in the field of this liquid crystal composition (see Patent Documents 1 to 4).
- liquid crystal display elements using a liquid crystal composition are widely used, such as VA type and IPS type, and super large size display elements having a size of 50 type or more are put into practical use. It became so.
- the substrate size increased, the method of injecting liquid crystal compositions into the substrate also changed, and the drop injection (ODF: One Drop Drop Fill) method became the main injection method from the conventional vacuum injection method.
- ODF One Drop Drop Fill
- the liquid crystal display element manufacturing process by the ODF method it is necessary to drop an optimal amount of liquid crystal according to the size of the liquid crystal display element.
- the drop amount deviation increases from the optimum value, the balance between the refractive index and the driving electric field of the liquid crystal display element designed in advance is lost, and display defects such as spots and poor contrast occur.
- small liquid crystal display elements frequently used in smartphones that have recently become popular are difficult to control the deviation from the optimal value within a certain range because the optimal liquid crystal dripping amount is small. Therefore, in order to maintain a high manufacturing yield of the liquid crystal display element, the liquid crystal composition is less affected by, for example, a sudden pressure change or impact in the dropping device that occurs when the liquid crystal is dropped, and is continuously stable over a long period of time. Therefore, it must be dripping.
- the conventional characteristics and performances required for the liquid crystal display element such as high-speed response performance are maintained, and importance is conventionally attached.
- development in consideration of a method for manufacturing a liquid crystal display element has been demanded.
- the problems to be solved by the present invention include a liquid crystal phase in a wide temperature range, low viscosity, good solubility at low temperatures, high specific resistance and high voltage holding ratio, and stability against heat and light.
- Providing a liquid crystal composition having a positive or negative ⁇ and capable of producing a liquid crystal display element excellent in display quality, which is less prone to display defects such as image sticking and dropping marks, and this liquid crystal composition It is providing the liquid crystal display element using this.
- 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. That is, the first aspect of the present invention is the following liquid crystal composition, the second aspect of the present invention is the following liquid crystal element, and the third aspect of the present invention is the following liquid crystal display.
- any one or two or more of the compounds represented by the following general formula (ii) are contained.
- R i1 represents an alkyl group having 1 to 8 carbon atoms
- a i1 represents a 1,4-cyclohexylene group (one —CH 2 — present in this group or two adjacent groups). More than one —CH 2 — may be replaced with —O—), 1,4-phenylene group (one or more hydrogen atoms present in this group may be replaced with fluorine atoms)
- R ii1 represents an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent two or more —CH 2 — in the alkyl group are each independently —CH ⁇ CH—, —C ⁇ C— , -O-, -CO-, -COO- or -OCO-
- R ii2 represents a fluorine atom, a chlorine atom, a cyano group or an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH
- a ii1 and A ii2 are each independently 1,4-cyclohexylene group (the one present in the group -CH 2 - or nonadjacent two or more -CH 2 - in -O- Represents a 1,4-phenylene group (one or more hydrogen atoms present in this group may be replaced by fluorine atoms),
- Z ii1 and Z ii2 are each independently a single bond, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, Represents —COO—, —OCO— or —C ⁇ C—, m
- 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—, OL represents 0, 1, 2 or 3;
- B L1 , B L2 and B L3 each independently represent (a) a 1,4-cyclohexylene group (one —CH 2 — present in this group or two or more —CH 2 — not adjacent to each other).
- OL 2 or 3 and a plurality of L L2 are present, they may be the same or different, and when OL is 2 or 3 and a plurality of B L3 is present, they are the same Or different.
- the compound represented by general formula (ii) is excluded. )
- R M1 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 —CH ⁇ CH—, — Optionally substituted by C ⁇ C—, —O—, —CO—, —COO— or —OCO—, PM represents 0, 1, 2, 3 or 4;
- C M1 and C M2 are each independently (D) 1,4-cyclohexylene group (this is present in the group one -CH 2 - or nonadjacent two or more -CH 2 - may be replaced by -O- or -S- And (e) a 1,4-phenylene group (one —CH ⁇ present in the group or two or more non-adjacent —CH ⁇ may be replaced by —N ⁇ ).
- K M1 and K M2 are each independently a single bond, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, Represents —COO—, —OCO— or —C ⁇ C—,
- K M1 and K M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom
- X M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group, or a 2,2,2-triflu
- R X1 and R X2 each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or an alkenyl group having 2 to 10 carbon atoms
- R X1 and R X2 each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or an alkenyl group having 2 to 10 carbon atoms
- One methylene group present in or two or more non-adjacent methylene groups may be substituted with —O— or —S—, and one or more methylene groups present in these groups may be substituted.
- the hydrogen atom may be substituted with a fluorine atom or a chlorine atom, u and v independently represent 0, 1 or 2, but u + v is 2 or less, M X1 , M X2 and M X3 are independent of each other, (A) trans-1,4-cyclohexylene group (one methylene group present in this group or two or more methylene groups not adjacent to each other may be replaced by —O— or —S—) .), (B) 1,4-phenylene group (one —CH ⁇ present in this group or two or more non-adjacent —CH ⁇ may be replaced by —N ⁇ )
- the hydrogen atom contained in said group (a) or group (b) is respectively substituted by the cyano group, the fluorine atom, the trifluoromethyl group, the trifluoromethoxy group, or the chlorine atom.
- L X1 , L X2 and L X3 are each independently a single bond, —COO—, —OCO—, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, —CH ⁇ CH— or —C ⁇ C—, and when there are a plurality of L X1 and / or L X3 , they may be the same or different, X X1 and X X2 each independently represent a trifluoromethyl group, a trifluoromethoxy group, or a fluorine atom, and any one of X X1 and X X2 represents a fluorine atom.
- the compound represented by general formula (ii) and the compound represented by general formula (L) are excluded. )
- a liquid crystal display element for IPS mode wherein the liquid crystal composition according to any one of [1] to [7] is used.
- a liquid crystal display element for FFS mode wherein the liquid crystal composition according to any one of [1] to [7] is used.
- the liquid crystal composition having a positive or negative dielectric anisotropy of the present invention has a liquid crystal phase in a wide temperature range, has a viscosity much lower than conventional, and has good solubility at low temperatures.
- the degree to which the specific resistance and voltage holding ratio are changed by heat and light is extremely small.
- the liquid crystal composition of the present invention has high practicality (applicability) to liquid crystal products, and an IPS type or FFS type liquid crystal display element using the liquid crystal composition can achieve a high-speed response.
- the liquid crystal composition of the present invention can stably exhibit its performance even after the manufacturing process of the liquid crystal display element, display defects due to the manufacturing process are suppressed, and the liquid crystal display element can be manufactured with a high yield. So it is very useful.
- the liquid crystal composition having positive or negative dielectric anisotropy contains a component (A) that is a dielectrically positive or negative component.
- the component (A) is preferably composed of a compound having a dielectric anisotropy of 2 or more or -2 or less.
- the dielectric anisotropy of the compound is a value extrapolated from the measured value of the dielectric anisotropy of a composition prepared by adding to a liquid crystal composition having a dielectric anisotropy of about 0 at 25 ° C. is there.
- the component (A) contains any one or more of the compounds represented by the following general formula (i), and among the compounds represented by the following general formula (ii) 1 type or 2 types or more are contained.
- R i1 each independently represents an alkyl group having 1 to 8 carbon atoms, and the alkyl group is preferably linear.
- a i1 is 1,4-cyclohexylene group (the one present in the group -CH 2 - or nonadjacent two or more -CH 2 - in -O- Represents a 1,4-phenylene group (one or two or more hydrogen atoms present in this group may be replaced by a fluorine atom) or a single bond.
- the 1,4-cyclohexylene group may be trans or cis, but is preferably trans.
- a i1 is preferably a 1,4-cyclohexylene group or a 1,4-phenylene group, and more preferably a 1,4-cyclohexylene group.
- the content of the compound represented by the general formula (i) has an upper limit value and a lower limit value for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. is there.
- the lower limit of the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is preferably 0.001% by mass, preferably 0.005% by mass, preferably 0.01% by mass, As an upper limit of content, 1 mass% is preferable, 0.1 mass% is preferable, and 0.05 mass% is preferable. If the content of the compound represented by the compound represented by the general formula (i) is large, the effect as an antioxidant increases, but the initial current value described later increases.
- the lower limit value and the upper limit value include, for example, 0.001 to 1% by mass, 0.005 to 0.1% by mass, and 0.01 to 0.05% by mass.
- the compound represented by the general formula (i) is contained in one or more types, preferably 1 to 5 types, more preferably 1 or 2 types. preferable.
- the compound represented by the general formula (i) is preferably a compound represented by the following general formula (ia) to general formula (id).
- R 11a is preferably a linear alkyl group having 5 to 8 carbon atoms.
- R 13a is preferably a linear alkyl group having 1 to 5 carbon atoms.
- R 13a is preferably a linear alkyl group having 1 to 5 carbon atoms.
- the compounds represented by the general formulas (ia) to (id) are more preferable.
- R ii1 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 —CH ⁇ CH It may be substituted by —, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
- the alkyl group may be linear or branched.
- R ii1 is preferably a straight-chain alkyl group, a straight-chain alkenyl group or a straight-chain alkoxy group in which a hydrogen atom is not substituted, a straight-chain alkyl group having 1 to 5 carbon atoms, or a 2 to 5 carbon atoms It is more preferably a straight-chain alkenyl group or an alkoxy group having 1 to 4 carbon atoms, a straight-chain alkyl group having 2 to 5 carbon atoms, the following alkenyl group
- an alkoxy group having 1 to 4 carbon atoms is more preferable.
- R ii2 represents a fluorine atom, a chlorine atom, a cyano group or an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group.
- Each independently may be substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, one or two of the alkyl groups
- Each of the above hydrogen atoms may be independently substituted with a fluorine atom.
- R ii2 is preferably a straight-chain alkyl group, a straight-chain alkenyl group or a straight-chain alkoxy group in which a fluorine atom or a hydrogen atom is not substituted, a fluorine atom or a straight-chain alkyl group having 1 to 5 carbon atoms, carbon It is more preferably a straight-chain alkenyl group having 2 to 5 atoms or an alkoxy group having 1 to 4 carbon atoms, such as a fluorine atom or a straight-chain alkyl group having 2 to 5 carbon atoms, and the following alkenyl groups
- an alkoxy group having 1 to 4 carbon atoms is more preferable.
- a ii1 and A ii2 are each independently a 1,4-cyclohexylene group (one —CH 2 — present in this group or two or more —CH 2 not adjacent to each other). 2 — may be replaced by —O—), a 1,4-phenylene group (one or more hydrogen atoms present in this group may be replaced by fluorine atoms) or a single atom. Represents a bond.
- the 1,4-cyclohexylene group may be trans or cis, but is preferably trans.
- m ii1 and m ii2 each independently represent 0, 1, 2, or 3. However, m ii1 + m ii2 is 1, 2, 3 or 4, In the general formula (ii), when one or more of A ii1 , A ii2 , Z ii1 and Z ii2 are present, they may be the same or different.
- each A ii1 may be the same as or different from each other, each Z ii1 may be the same as or different from each other, and A ii2 and When a plurality of Z ii2 are present, each A ii2 may be the same as or different from each other, and each Z ii2 may be the same as or different from each other.
- M ii1 + m ii2 is preferably 1 or 2 when importance is attached to the response speed of the liquid crystal composition containing the compound represented by the general formula (ii), and when importance is placed on improvement of the liquid crystal phase upper limit temperature.
- m ii1 + m ii2 is preferably 3 or 4
- m ii1 + m ii2 is preferably 2 or 3 when importance is placed on the balance thereof.
- the content of the compound represented by the general formula (ii) has an upper limit value and a lower limit value for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. is there.
- the lower limit of the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is preferably 1%, preferably 5%, preferably 8%, preferably 10%, preferably 13%, 15% 18% is preferable, 20% is preferable, and the upper limit of the content of the compound is preferably 40%, 35% is preferable, 30% is preferable, 27% is preferable, 25% is preferable, 23% 20% is preferable, 18% is preferable, 15% is preferable, 13% is preferable, and 10% is preferable.
- Preferable combinations of the lower limit value and the upper limit value include, for example, 1 to 30% by mass, 5 to 15% by mass, and 8 to 10% by mass. Examples of the combination include 1 to 20% by mass, 1 to 13% by mass, and 1 to 8% by mass. Examples of the combination include 5 to 30% by mass, 10 to 23% by mass, and 10 to 18% by mass.
- the compound represented by the general formula (ii) is contained in one or more types, preferably 1 to 5 types, more preferably 1 to 3 types. preferable.
- the lower limit of the content of the compound with respect to the total mass is preferably 1%, preferably 3%, preferably 6%, 8% is preferable, and the upper limit of the content of the compound with respect to the total mass is preferably 30%, preferably 20%, preferably 15%, and preferably 12%.
- Preferable combinations of the lower limit value and the upper limit value include, for example, 1 to 30% by mass, 3 to 20% by mass, 6 to 15% by mass, and 8 to 12% by mass.
- the lower limit of the total content of the two types of compounds with respect to the total mass is preferably 1%, preferably 3%, % Is preferable, and 8% is preferable.
- the upper limit value of the total content of the two compounds with respect to the total mass is preferably 30%, preferably 20%, preferably 15%, and preferably 12%.
- Preferable combinations of the lower limit value and the upper limit value include, for example, 1 to 30% by mass, 3 to 20% by mass, and 6 to 15% by mass, and 8 to 12% by mass.
- liquid crystal composition of the present invention a liquid crystal composition containing one or more compounds in which R ii2 in the general formula (ii) is a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group, or a cyano group. Things. Examples of such compounds include compounds represented by the following general formulas (ii-a) to (ii-c).
- X ii11 , X ii12 , X ii13 and X ii14 each independently represent a hydrogen atom or a fluorine atom.
- at least one of X Ii11 and X II12 are hydrogen atoms, and more preferably both X Ii11 and X II12 is a hydrogen atom.
- X ii13 is preferably a fluorine atom
- X ii14 is preferably a fluorine atom
- X ii13 and X ii14 are more preferably a fluorine atom.
- the compound represented by the general formula (ii-a) is preferably a compound represented by the following general formula (X-6).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (X-6) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (44.1) to the formula (44.4). It is preferable.
- the liquid crystal composition preferably contains a compound represented by formula (44.1) and / or formula (44.2).
- the content of the compound represented by the formula (44.1) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 15% by mass or less, still more preferably 2% by mass or more and 10% by mass or less, and 2% by mass or more and 8% by mass or less. % Or less is particularly preferable, and 2% by mass or more and 6% by mass or less is most preferable. Among the most preferable ranges, the content may be 2% by mass to 5% by mass, 2% by mass to 4% by mass, or 2% by mass to 3% by mass. 3 mass% or more and 6 mass% or less may be sufficient, 3 mass% or more and 5 mass% or less may be sufficient, and 4 mass% or more and 6 mass% or less may be sufficient. 5 mass% or more and 6 mass% or less may be sufficient.
- the content of the compound represented by the formula (44.2) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 20% by mass or less, still more preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 12% by mass. % Or less is particularly preferable. Among the particularly preferable ranges, the content may be 3% by mass to 10% by mass, 3% by mass to 7% by mass, or 3% by mass to 6% by mass.
- 3 mass% or more and 5 mass% or less may be sufficient, 3 mass% or more and 4 mass% or less may be sufficient, and 4 mass% or more and 12 mass% or less may be sufficient. It may be 4% by mass or more and 10% by mass or less, 5% by mass or more and 12% by mass or less, 6% by mass or more and 12% by mass or less, or 7% by mass or more. 12 mass% or less may be sufficient, and 10 mass% or more and 12 mass% or less may be sufficient.
- the total content of the compound represented by the formula (44.1) and the compound represented by the formula (44.2) is low-temperature solubility, transition temperature, electrical In consideration of reliability and the like, it is preferably 2% by mass or more and 40% by mass or less, more preferably 3% by mass or more and 30% by mass or less, and more preferably 4% by mass or more with respect to the total mass of the liquid crystal composition of the present invention. 20 mass% or less is further more preferable, and 5 mass% or more and 15 mass% or less are especially preferable.
- the content is, for example, 5% by mass to 12% by mass, 5% by mass to 10% by mass, 5% by mass to 9% by mass, 5% by mass to 8% by mass, 8 mass% or more and 15 mass% or less, 8 mass% or more and 10 mass% or less, 9 mass% or more and 15 mass% or less, 10 mass% or more and 15 mass% or less are mentioned.
- a ii1 is preferably a 1,4-cyclohexylene group, and Z ii1 is preferably a single bond.
- m ii1 is 1, m ii2 is preferably 1, and the compound represented by the general formula (ii) is more preferably a compound represented by the following general formula (ii-b).
- X ii1 and X ii2 each independently represent a hydrogen atom or a fluorine atom, and Z ii2, R ii1 and R ii2 Z ii2, R ii1 and R ii2 in the general formula (ii) The same.
- the compound represented by the general formula (ii-b) is preferably a compound represented by the following general formula (ii-bn).
- R ii1 is the same as R ii1 in general formula (ii). More specifically, the compound represented by the general formula (ii-bn) is preferably a compound represented by the following formulas (ii-b-1) to (ii-b-6). Among these, the liquid crystal composition of the present invention preferably contains formula (ii-b-3) and / or (ii-b-5).
- the total content of the compounds represented by the formula (ii-bn) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, still more preferably 6% by mass or more and 15% by mass or less, and more preferably 8% by mass with respect to the total mass of the liquid crystal composition. % To 12% by mass is particularly preferable.
- liquid crystal composition of the present invention one or more compounds in which R ii2 in the general formula (ii) is an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms are used.
- the liquid crystal composition to contain is mentioned. Examples of such compounds include compounds represented by the following general formula (ii-c).
- liquid crystal composition of the present invention a liquid crystal containing one or more compounds represented by formula (ii) having at least one 2,3-difluorobenzene-1,4-diyl group A composition.
- compounds represented by the following general formula (ii-c) include compounds represented by the following general formula (ii-c).
- X ii5 and X II6 each independently represent a hydrogen atom or a fluorine atom, A ii2, R ii1 and R ii2 in the general formula (ii) A ii2, and R ii1 and R ii2 The same.
- One of X ii5 and X ii6 is preferably a fluorine atom, and more preferably both are fluorine atoms.
- a ii2 is preferably a 1,4-cyclohexylene group.
- the compound represented by the general formula (ii-c) is preferably a compound represented by the following general formula (ii-cn).
- R ii3 is preferably an alkyl group having 1 to 6 carbon atoms, more preferably a linear alkyl group having 1 to 4 carbon atoms, More preferably, it is an alkyl group having a number of 1 or 2.
- R ii4 is preferably an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, and linear alkyl having 1 to 5 carbon atoms. It is more preferably a group or an alkenyl group having 2 to 5 carbon atoms.
- the compound represented by the general formula (ii-cn) is preferably a compound represented by the following formulas (ii-c-1) to (ii-c-10).
- the liquid crystal composition of the present invention preferably contains 1 to 3 of the formulas (ii-c-3), (ii-b-5) and (ii-c-6). .
- the total content of the compounds represented by the formula (ii-cn) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 60% by mass or less, more preferably 10% by mass or more and 50% by mass or less, still more preferably 20% by mass or more and 40% by mass or less, and more preferably 30% by mass with respect to the total mass of the liquid crystal composition. % To 40% by mass is particularly preferable.
- the content of the compound represented by the formula (ii-c-3) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. 1% by mass or more and 30% by mass or less is preferable, 3% by mass or more and 25% by mass or less is more preferable, 5% by mass or more and 20% by mass or less is more preferable, and 8% by mass or more and 16% by mass or less is preferable. % Or less is particularly preferable.
- the content of the compound represented by the formula (ii-c-5) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. 1% by mass or more and 30% by mass or less is preferable, 3% by mass or more and 25% by mass or less is more preferable, 5% by mass or more and 20% by mass or less is more preferable, and 8% by mass or more and 16% by mass or less is preferable. % Or less is particularly preferable.
- the content of the compound represented by the formula (ii-c-7) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. 1% by mass or more and 30% by mass or less is preferable, 3% by mass or more and 25% by mass or less is more preferable, 5% by mass or more and 20% by mass or less is more preferable, and 8% by mass or more and 16% by mass or less is preferable. % Or less is particularly preferable.
- the total content of the three compounds represented by formula (ii-c-3), formula (ii-c-5) and formula (ii-c-7) is low temperature.
- it is preferably 1% by mass or more and 60% by mass or less, and preferably 10% by mass or more and 50% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. More preferably, it is 20 mass% or more, 40 mass% or less is further more preferable, and 30 mass% or more and 40 mass% or less is especially preferable.
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- a plurality of compounds represented by the above general formula (X-4-2) are considered in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like.
- X-4-2 a plurality of compounds represented by the above general formula (X-4-2) are considered in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like.
- the content of the compound represented by the general formula (X-4-2) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass to 30% by mass, more preferably 3% by mass to 20% by mass, and still more preferably 5% by mass to 15% by mass.
- the compounds represented by the general formula (X-4-2) used in the liquid crystal composition of the present invention are specifically compounds represented by the formulas (42.11) to (42.14). It is preferable that Among these, the liquid crystal composition of the present invention more preferably contains a compound represented by the formula (42.13) or the formula (42.14).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (X′-7) is an upper limit value for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. There is a lower limit.
- the content of the compound is 4 to 30% by mass with respect to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 5 to 30%. In still another embodiment, the content of the compound is 6 to 30% by mass. In still another embodiment, the content of the compound is 8 to 30% by mass. In still another embodiment, the content of the compound is The content is 9-30% by mass, and in still another embodiment, the content of the compound is 11-30% by mass, and in still another embodiment, the content of the compound is 14-30% by mass. In still another embodiment, the content of the compound is 18% to 30% by mass.
- the content of the compound is 4 to 30% by mass with respect to the total mass, and in another embodiment, the content of the compound is 4 to 20% by mass. In this embodiment, the content of the compound is 4 to 13% by mass, and in still another embodiment, the content of the compound is 4 to 10% by mass, and in still another embodiment, the content of the compound is 4 to 4% by mass. 7% by mass.
- the compound represented by the general formula (X′-7) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (44.11) to the formula (44.14). Among them, it is preferable to contain a compound represented by the formula (44.13).
- R X1 and R X2 represent the same meaning as R X1 and R X2 in the general formula (X ′′) described later.
- R X1 preferably represents an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, more preferably an alkyl group having 1 to 8 carbon atoms, More preferably, it represents an alkyl group having 2 to 5 atoms, and is preferably a straight chain.
- R X2 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms.
- it represents an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms, and represents an alkyl group having 2 to 5 carbon atoms or an alkoxy group having 2 to 4 carbon atoms. It is more preferable that it is linear.
- R X2 is preferably an alkenyl group.
- R X2 is an alkyl group. It is preferable.
- the content of the compound represented by the general formula (XIII ′′ -40) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 20% by mass or less, and more preferably 5% by mass or more and 15% by mass or less with respect to the total mass of the composition. More preferably, it is particularly preferably 7% by mass or more and 13% by mass or less.
- the liquid crystal composition according to the first embodiment of the present invention may contain any one or more of the compounds represented by the following general formula (L).
- 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—, OL represents 0, 1, 2 or 3;
- B L1 , B L2 and B L3 each independently represent (a) a 1,4-cyclohexylene group (one —CH 2 — present in this group or two or more —CH 2 — not adjacent to each other).
- OL 2 or 3 and a plurality of L L2 are present, they may be the same or different, and when OL is 2 or 3 and a plurality of B L3 is present, they are the same Or different.
- the compound represented by the general formula (ii) is excluded. )
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. In another embodiment of the present invention, there are three types. Furthermore, in another embodiment of this invention, they are four types. Furthermore, in another embodiment of this invention, they are five types. Furthermore, in another embodiment of the present invention, there are six types. Furthermore, in another embodiment of the present invention, there are seven types. Furthermore, in another embodiment of this invention, they are eight types. Furthermore, in another embodiment of the present invention, there are nine types. Furthermore, in another embodiment of this invention, it is ten or more types.
- the content of the compound represented by the general formula (L) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping marks, and burn-in. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 1 to 95% by mass in one embodiment of the present invention.
- the content is 10% to 95% by mass.
- the content is 20% to 95% by mass.
- the content is 30% to 95% by mass.
- the content is 40% to 95% by mass.
- the content is 50% to 95% by mass.
- the content is 55% to 95% by mass.
- the content is 60% to 95% by mass.
- the content is 65% to 95% by mass. In still another embodiment of the present invention, the content is 70% to 95% by mass. In still another embodiment of the present invention, the content is 75% to 95% by mass. In still another embodiment of the present invention, the content is 80% to 95% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 1 to 95% in one embodiment of the present invention.
- the content is 1% to 85%.
- the content is 1% to 75%.
- the content is 1% to 65%.
- the content is 1% to 55%.
- the content is 1% to 45%.
- the content is 1% to 35%.
- the content is 1% to 25%.
- the above lower limit value is preferably high and the upper limit value is preferably high. Furthermore, when the liquid crystal composition of the present invention maintains a high Tni and a liquid crystal composition with good temperature stability is required, the above lower limit value is preferably high and the upper limit value is high. 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.
- 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). (Or more) alkoxy groups and alkenyl groups having 4 to 5 carbon atoms are preferred, and when the ring structure to which they are bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, linear carbon atoms An alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 (or more) carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms are preferable.
- the compound represented by the general formula (L) preferably has no chlorine atom in the molecule when chemical stability of the liquid crystal composition is required.
- the compound represented by general formula (L) is preferably, for example, a compound selected from the group of compounds represented by general formula (I).
- R 11 and R 12 each independently represent an alkoxy group or an alkenyl group having 2 to 5 carbon atoms in the alkyl group or having 1 to 5 carbon atoms having 1 to 5 carbon atoms
- a 11 and A 12 each independently represents a 1,4-cyclohexylene group, a 1,4-phenylene group, a 2-fluoro-1,4-phenylene group or a 3-fluoro-1,4-phenylene group.
- the types of compounds that can be combined are represented by the general formula (I) according to the required performance such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence.
- a plurality of compounds can be used in appropriate combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. In another embodiment of the present invention, there are three types. Furthermore, in another embodiment of this invention, they are four types. Furthermore, in another embodiment of this invention, they are five types. Furthermore, in another embodiment of this invention, they are six or more types.
- the content of the compound represented by the general formula (I) is low temperature solubility, transition temperature, electrical reliability, birefringence, process suitability, dripping marks, image sticking. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 75% by mass in one embodiment of the present invention.
- the content is 15% to 75% by mass.
- the content is 18% to 75% by mass.
- the content is 20% to 75% by mass.
- the content is 29% to 75% by mass.
- the content is 35% to 75% by mass.
- the content is 42% to 75% by mass.
- the content is 47% to 75% by mass.
- the content is 53% to 75% by mass. In still another embodiment of the present invention, the content is 56% to 75% by mass. In still another embodiment of the present invention, the content is 60% to 75% by mass. In still another embodiment of the present invention, the content is 65% to 75% by mass.
- the content is, for example, 3 to 75% by mass in one embodiment of the present invention with respect to the total mass of the liquid crystal composition of the present invention.
- the content is 3% to 65% by mass.
- the content is 3% to 55% by mass.
- the content is 3% to 50% by mass.
- the content is 3% to 45% by mass.
- the content is 3% to 40% by mass.
- the content is 3% to 35% by mass.
- the content is 3% to 30% by mass.
- the above lower limit value is preferably high and the upper limit value is preferably high. Furthermore, when the liquid crystal composition of the present invention maintains a high Tni and a liquid crystal composition with good temperature stability is required, it is preferable that the above lower limit value is medium and the upper limit value is medium. 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.
- R M1 and R M1 are a linear alkyl group having 1 to 5 carbon atoms and a linear alkoxy group having 1 to 4 carbon atoms when the ring structure to which it is bonded is a phenyl group (aromatic).
- Group and an alkenyl group having 4 to 5 carbon atoms and when the ring structure to which the group is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, a linear alkyl group having 1 to 5 carbon atoms
- a straight-chain alkoxy group having 1 to 4 carbon atoms and a straight-chain alkenyl group having 2 to 5 carbon atoms are preferable.
- the compound represented by the general formula (I) is preferably a compound selected from the group of compounds represented by the general formula (I-1).
- R 11 and R 12 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.
- the compounds represented by the general formula (I-1) can be used depending on required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. These compounds can be used in appropriate combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. In another embodiment of the present invention, there are three types. Furthermore, in another embodiment of this invention, they are four types. Furthermore, in another embodiment of this invention, they are five or more types.
- the content of the compound represented by the general formula (I-1) is such that solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drop mark Therefore, it is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 70% by mass in one embodiment of the present invention.
- the content is 15% to 70% by mass.
- the content is 18% to 70% by mass.
- the content is 25% to 70% by mass.
- the content is 29% to 70% by mass.
- the content is 31% to 70% by mass.
- the content is 35% to 70% by mass.
- the content is 43% to 70% by mass.
- the content is 47% to 70% by mass.
- the content is 50% to 70% by mass.
- the content is 53% to 70% by mass.
- the content is 56% to 70% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 70% by mass in one embodiment of the present invention.
- the content is 3% to 60% by mass.
- the content is 3% to 50% by mass.
- the content is 3% to 45% by mass.
- the content is 3% to 40% by mass.
- the content is 3% to 35% by mass.
- the content is 3% to 30% by mass.
- the content is 3% to 26% by mass.
- the above lower limit value is preferably high and the upper limit value is preferably high. Furthermore, when the liquid crystal composition of the present invention maintains a high Tni and a liquid crystal composition with good temperature stability is required, it is preferable that the above lower limit value is medium and the upper limit value is medium. 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 (I-1) is preferably a compound selected from the group of compounds represented by the general formula (I-1-1).
- each R 12 independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms.
- the content of the compound represented by the general formula (I-1-1) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, It is necessary to adjust appropriately according to required performance such as dripping marks, image sticking, and dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 60% by mass in one embodiment of the present invention.
- the content is 4% to 60% by mass.
- the content is 7% to 60% by mass.
- the content is 11% to 60% by mass.
- the content is 13% to 60% by mass.
- the content is 15% to 60% by mass.
- the content is 17% to 60% by mass.
- the content is 20% to 60% by mass.
- the content is 25% to 60% by mass.
- the content is 30% to 60% by mass.
- the content is 32% to 60% by mass.
- the content is 35% to 60% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 60% by mass in one embodiment of the present invention. In still another embodiment of the present invention, the content is 2% to 50% by mass. In still another embodiment of the present invention, the content is 2% to 40% by mass. In still another embodiment of the present invention, the content is 2% to 35% by mass. In still another embodiment of the present invention, the content is 2% to 30% by mass. In still another embodiment of the present invention, the content is 2% to 25% by mass. In still another embodiment of the present invention, the content is 2% to 20% by mass. In still another embodiment of the present invention, the content is 2% to 15% by mass.
- the compound represented by the general formula (I-1-1) is preferably a compound selected from the group consisting of compounds represented by the formulas (1.1) to (1.3). .2) or a compound represented by formula (1.3) is preferred, and a compound represented by formula (1.3) is particularly preferred.
- the content of the compound represented by formula (1.2) is high.
- the content of the compound represented by the formula (1.3) has the effect of improvement, and the range shown below is preferable because a liquid crystal composition having high response speed and high electrical and optical reliability can be obtained.
- the compound represented by the formula (1.3) is preferably contained in an amount of 1% by mass to 35% by mass with respect to the total mass of the liquid crystal composition of the present invention, and preferably 2% by mass to 25% by mass. It is more preferable to contain 3% by mass or more and 20% by mass or less. In a more preferable range, it may be 4 to 15% by mass, 4 to 10% by mass, 4 to 7% by mass, or 3 to 4% by mass. Alternatively, it may be 7 to 15% by mass, 10 to 15% by mass, or 15 to 20% by mass.
- the compound represented by the general formula (I-1) is preferably a compound selected from the group of compounds represented by the general formula (I-1-2).
- each R 12 independently represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. In another embodiment of the present invention, there are three types.
- the content of the compound represented by the general formula (I-1-2) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, It is necessary to adjust appropriately according to required performance such as dripping marks, image sticking, and dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 7 to 60% by mass in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, the content is 15% to 60% by mass. In still another embodiment of the present invention, the content is 18% to 60% by mass. In still another embodiment of the present invention, the content is 21% to 60% by mass. In still another embodiment of the present invention, the content is 24% to 60% by mass. In still another embodiment of the present invention, the content is 27% to 60% by mass. In still another embodiment of the present invention, the content is 30% to 60% by mass. In still another embodiment of the present invention, the content is 34% to 60% by mass. In still another embodiment of the present invention, the content is 37% to 60% by mass. In still another embodiment of the present invention, the content is 41% to 60% by mass. In still another embodiment of the present invention, the content is 47% to 60% by mass. In still another embodiment of the present invention, the content is 50% to 60% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 7 to 60% by mass in one embodiment of the present invention.
- the content is 7% to 55% by mass.
- the content is 7% to 45% by mass.
- the content is 7% to 40% by mass.
- the content is 7% to 35% by mass.
- the content is 7% to 30% by mass.
- the content is 7% to 25% by mass.
- the content is 7% to 20% by mass.
- the compound represented by the general formula (I-1-2) is preferably a compound selected from the group of compounds represented by the formulas (2.1) to (2.4). .2) to the compound represented by formula (2.4).
- the compound represented by the formula (2.2) is preferable because the response speed of the liquid crystal composition of the present invention is particularly improved.
- the content of the compounds represented by formula (2.3) and formula (2.4) is not preferably 30% or more in order to improve the solubility at low temperatures.
- the content of the compound represented by the formula (2.2) is preferably 5% by mass or more and 55% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. More preferable examples of the content include 10% by mass to 50% by mass, 20% to 40% by mass, 20% to 35% by mass, 20% to 30% by mass, 20% to 25% by mass. % Or less, 10% to 20% by weight, 25% to 50% by weight, 30% to 50% by weight, 35% to 50% by weight, 40% to 50% by weight It is done.
- the content of the compound represented by the formula (2.3) is preferably 5% by mass to 55% by mass with respect to the total mass of the liquid crystal composition of the present invention. It is more preferably 5% by mass or less and 45% by mass or less, more preferably 5% by mass or more and 35% by mass or less, further preferably 5% by mass or more and 25% by mass or less, and more preferably 10% by mass or more and 25% by mass. % Or less is more preferable.
- the content of the compound represented by the formula (2.4) is preferably 1% by mass or more and 55% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. 1% by mass to 40% by mass is more preferable, 10% by mass to 40% by mass is more preferable, 20% by mass to 40% by mass is further preferable, and 25% by mass to 35% by mass. % Or less is particularly preferable.
- the compound represented by the general formula (I) is preferably a compound selected from the group of compounds represented by the general formula (I-2).
- R 13 and R 14 each independently represents an alkyl group having 1 to 5 carbon atoms.
- R 13 and R 14 each independently represents an alkyl group having 1 to 5 carbon atoms.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. In another embodiment of the present invention, there are three types.
- the content of the compound represented by the general formula (I-2) is such that solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drop mark Therefore, it is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 60% by mass in one embodiment of the present invention.
- the content is 4% to 60% by mass.
- the content is 15% to 60% by mass.
- the content is 25% to 60% by mass.
- the content is 30% to 60% by mass.
- the content is 35% to 60% by mass.
- the content is 38% to 60% by mass.
- the content is 40% to 60% by mass.
- the content is 42% to 60% by mass.
- the content is 45% to 60% by mass.
- the content is 47% to 60% by mass.
- the content is 50% to 60% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 60% by mass in one embodiment of the present invention.
- the content is 3% to 55% by mass.
- the content is 3% to 45% by mass.
- the content is 3% to 40% by mass.
- the content is 3% to 30% by mass.
- the content is 3% to 20% by mass.
- the content is 3% to 15% by mass.
- the content is 3% to 5% by mass.
- the compound represented by the general formula (I-2) is preferably a compound selected from the group of compounds represented by the formulas (3.1) to (3.4). ), A compound represented by formula (3.3) or formula (3.4).
- the compound represented by the formula (3.2) is preferable because the response speed of the liquid crystal composition of the present invention is particularly improved.
- the content of the compounds represented by the formulas (3.3) and (3.4) is not preferably 20% or more in order to improve the solubility at low temperatures.
- the compound represented by the general formula (I-2) is preferably a compound selected from the group of compounds represented by the formulas (3.1) to (3.4). ), A compound represented by formula (3.3) and / or formula (3.4).
- the content of the compound represented by the formula (3.1) is determined in consideration of solubility at low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 30% by mass or less, more preferably 5% by mass or more and 25% by mass or less, and still more preferably 10% by mass or more and 20% by mass or less. It is particularly preferably 12% by mass or more and 18% by mass or less.
- the content of the compound represented by formula (3.3) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like.
- the total mass is preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 15% by mass or less, and further preferably 1% by mass or more and 10% by mass or less.
- the content is particularly preferably 2% by mass or more and 8% by mass or less.
- the content of the compound represented by formula (3.4) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like.
- the total mass is preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 20% by mass or less, and further preferably 3% by mass or more and 12% by mass or less. It is particularly preferably 5% by mass or more and 10% by mass or less.
- the compound represented by the general formula (I) is preferably a compound selected from the group of compounds represented by the general formula (I-3).
- R 13 represents an alkyl group having 1 to 5 carbon atoms
- R 15 represents an alkoxy group having 1 to 4 carbon atoms.
- the compounds represented by the above general formula (I-3) can be used depending on required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. Multiple compounds can be combined.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. In another embodiment of the present invention, there are three types.
- the content of the compound represented by the general formula (I-3) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dropping trace Therefore, it is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3% by mass in one embodiment of the present invention.
- the content is 4% to 60% by mass.
- the content is 15% to 60% by mass.
- the content is 25% to 60% by mass.
- the content is 30% to 60% by mass.
- the content is 35% to 60% by mass.
- the content is 38% to 60% by mass.
- the content is 40% to 60% by mass.
- the content is 42% to 60% by mass.
- the content is 45% to 60% by mass.
- the content is 47% to 60% by mass.
- the content is 50% to 60% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 60% by mass in one form of the present invention.
- the content is 3% to 55% by mass.
- the content is 3% to 45% by mass.
- the content is 3% to 40% by mass.
- the content is 3% to 30% by mass.
- the content is 3% to 20% by mass.
- the content is 3% to 15% by mass.
- the content is 3% to 5% by mass.
- the compound represented by the general formula (I-3) is preferably a compound selected from the group of compounds represented by the formulas (4.1) to (4.3). It is preferable that it is a compound represented by this.
- the content of the compound represented by the formula (4.3) is preferably 2% by mass or more and 30% by mass or less with respect to the total amount of the liquid crystal composition of the present invention.
- the compound represented by general formula (I) is preferably a compound selected from the group of compounds represented by general formula (I-4).
- R 11 and R 12 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compounds represented by the above general formula (I-4) can be used depending on required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. Multiple compounds can be combined.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types.
- the content of the compound represented by the general formula (I-4) is such that solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dropping trace Therefore, it is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 50% by mass in one embodiment of the present invention.
- the content is 5% to 50% by mass.
- the content is 6% to 50% by mass.
- the content is 8% to 50% by mass.
- the content is 10% to 50% by mass.
- the content is 12% to 50% by mass.
- the content is 15% to 50% by mass.
- the content is 20% to 50% by mass.
- the content is 25% to 50% by mass.
- the content is 30% to 50% by mass.
- the content is 35% to 50% by mass.
- the content is 40% to 50% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, in one form of the present invention, the content is 3 to 50% by mass. In still another embodiment of the present invention, the content is 3% to 40% by mass. In still another embodiment of the present invention, the content is 3% to 35% by mass. In still another embodiment of the present invention, the content is 3% to 30% by mass. In still another embodiment of the present invention, the content is 3% to 20% by mass. In still another embodiment of the present invention, the content is 3% to 15% by mass. In still another embodiment of the present invention, the content is 3% to 10% by mass. In still another embodiment of the present invention, the content is 3% to 5% by mass.
- 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 (I-4) is preferably a compound selected from the group of compounds represented by the formulas (5.1) to (5.4). ) To the compound represented by formula (5.4).
- the content of the compound represented by the formula (5.3) is preferably 1% by mass or more and 30% by mass or less, and preferably 2% by mass or more and 20% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. It is more preferable that it is 2 mass% or more and 10 mass% or less.
- the content of the compound represented by the formula (5.4) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 20% by mass or less, and further preferably 1% by mass or more and 10% by mass or less. The content is particularly preferably 1% by mass or more and 5% by mass or less.
- the compound represented by the general formula (I) is preferably a compound selected from the group of compounds represented by the general formula (I-5).
- R 11 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- R 12 represents an alkyl group having 1 to 5 carbon atoms.
- R 11 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- R 12 represents an alkyl group having 1 to 5 carbon atoms.
- R 11 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- R 12 represents an alkyl group having 1 to 5 carbon atoms.
- R 11 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- R 12 represents an al
- the compounds represented by the general formula (I-5) can be used depending on required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. Multiple compounds can be combined.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types.
- the content of the compound represented by the general formula (I-5) is low temperature solubility, transition temperature, electrical reliability, birefringence index, process suitability, dripping trace. Therefore, it is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 1 to 50% by mass in one embodiment of the present invention.
- the content is 5% to 50% by mass.
- the content is 8% to 50% by mass.
- the content is 11% to 50% by mass.
- the content is 13% to 50% by mass.
- the content is 15% to 50% by mass.
- the content is 17% to 50% by mass.
- the content is 20% to 50% by mass.
- the content is 25% to 50% by mass.
- the content is 30% to 50% by mass.
- the content is 35% to 50% by mass.
- the content is 40% to 50% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 1 to 50% in one embodiment of the present invention.
- the content is 1% to 40%.
- the content is 1% to 35%.
- the content is 1% to 30%.
- the content is 1% to 20%.
- the content is 1% to 15%.
- the content is 1% to 10%.
- the content is 1% to 5%.
- the compound represented by the general formula (I-5) is preferably a compound selected from the group of compounds represented by the formulas (6.1) to (6.6). ), A compound represented by formula (6.4) and formula (6.6).
- the content of the compound represented by the formula (6.3) is preferably 2% by mass or more and 30% by mass or less, and preferably 4% by mass or more and 25% by mass with respect to the total mass of the liquid crystal composition of the present invention. % Or less, more preferably 6% by mass or more and 20% by mass or less.
- the liquid crystal composition of the present invention may further contain a compound represented by the formula (6.7) and the formula (6.8) as the compound represented by the general formula (I-5).
- the content of the compound represented by the formula (6.7) is preferable to adjust the content of the compound represented by the formula (6.7) according to required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. It is preferable to contain 2% by mass or more with respect to the total mass of the liquid crystal composition of the invention, more preferably 3% by mass or more, still more preferably 5% by mass or more, and more preferably 7% by mass or more. Is particularly preferred.
- the compound represented by the general formula (I) is preferably a compound selected from the group of compounds represented by the general formula (I-6).
- R 11 and R 12 each independently represents 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 to 5
- X 11 and X 12 each independently represents a fluorine atom or a hydrogen atom, and either X 11 or X 12 is a fluorine atom.
- the content of the compound represented by the general formula (I-6) is preferably 2% by mass or more and 30% by mass or less with respect to the total mass of the liquid crystal composition of the present invention, and is 4% by mass or more and 30% by mass. It is more preferably 5% by mass or more and 30% by mass or less, more preferably 6% by mass or more and 30% by mass or less, and more preferably 9% by mass or more and 30% by mass or less.
- it is 12 mass% or more and 30 mass% or less, More preferably, it is 14 mass% or more and 30 mass% or less, It is more preferable that it is 16 mass% or more and 30 mass% or less, 18 mass % To 25% by mass, more preferably 20% to 24% by mass, and particularly preferably 22% to 23% by mass.
- the compound represented by the general formula (I-6) is preferably a compound represented by the formula (7.1).
- the compound represented by the general formula (I) is preferably a compound selected from the group of compounds represented by the general formula (I-7).
- R 11 and R 12 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X 12 represents Independently represents a fluorine atom or a chlorine atom.
- the content of the compound represented by the general formula (I-7) is preferably 1% by mass or more and 30% by mass or less, and preferably 2% by mass or more and 30% by mass with respect to the total mass of the liquid crystal composition of the present invention. Is more preferably 3% by mass or more and 30% by mass or less, more preferably 4% by mass or more and 30% by mass or less, and more preferably 6% by mass or more and 30% by mass or less. More preferably, it is 8% by mass or more and 30% by mass or less, more preferably 10% by mass or more and 30% by mass or less, more preferably 12% by mass or more and 30% by mass or less, and more preferably 15% by mass. % To 25% by mass, more preferably 18% to 24% by mass, and particularly preferably 21% to 22% by mass.
- the compound represented by the general formula (I-7) is preferably a compound represented by the formula (8.1).
- the compound represented by the general formula (I) is preferably a compound selected from the group of compounds represented by the general formula (I-8).
- R 16 and R 17 each independently represents an alkenyl group having 2 to 5 carbon atoms
- the above general formula (I-8) Of the plurality of compounds represented, it is preferable to combine one to three types.
- the content of the compound represented by the general formula (I-8) is the solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drop mark, image sticking, dielectric anisotropy
- the required performance such as, it is preferably 5% by mass or more and 65% by mass or less, more preferably 10% by mass or more and 65% by mass or less, with respect to the total mass of the liquid crystal composition of the present invention.
- they are 15 mass% or more and 65 mass% or less, More preferably, they are 20 mass% or more and 65 mass% or less, More preferably, they are 25 mass% or more and 65 mass% or less, 30 mass% or more and 65 mass% or less. More preferably, it is 35 mass% or less, More preferably, it is 35 mass% or more and 65 mass% or less, More preferably, it is 40 mass% or more and 65 mass% or less, It is 45 mass% or more and 60 mass% or less. Preparative more preferably, more preferably at most 50 mass% or more 58 wt%, particularly preferably not more than 55 wt% or more 56 wt%.
- the compound represented by the general formula (I-8) is preferably a compound selected from the group of compounds represented by the formulas (9.1) to (9.10). ), A compound represented by formula (9.4) and formula (9.7) is preferable.
- the compound represented by general formula (L) is a compound chosen, for example from the compound represented by general formula (II).
- R 21 and R 22 each independently represents an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and A 2 represents 1,4- cyclohexylene or 1,4-phenylene group, Q 2 is a single bond, -COO -, - CH 2 -CH 2 - or an -CF 2 O-).
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Moreover, in another embodiment of this invention, they are three types. Furthermore, in another embodiment of this invention, they are four or more types.
- the content of the compound represented by the general formula (II) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping marks, and burn-in. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 50% by mass in one embodiment of the present invention.
- the content is 5% to 50% by mass.
- the content is 7% to 50% by mass.
- the content is 10% to 50% by mass.
- the content is 14% to 50% by mass.
- the content is 16% to 50% by mass.
- the content is 20% to 50% by mass.
- the content is 23% to 50% by mass.
- the content is 26% to 50% by mass.
- the content is 30% to 50% by mass.
- the content is 35% to 50% by mass.
- the content is 40% to 50% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 50% by mass in one embodiment of the present invention.
- the content is 3% to 40% by mass.
- the content is 3% to 35% by mass.
- the content is 3% to 30% by mass.
- the content is 3% to 20% by mass.
- the content is 3% to 15% by mass.
- the content is 3% to 10% by mass.
- the content is 3% to 5% by mass.
- the compound represented by the general formula (II) is preferably a compound selected from the compound group represented by the general formula (II-1), for example.
- R 21 and R 22 each independently represents an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (II-1) is preferably adjusted according to required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence and the like.
- the mass is preferably from 24% by mass to 24% by mass, more preferably from 8% by mass to 18% by mass, and still more preferably from 12% by mass to 14% by mass.
- the compound represented by the general formula (II-1) is preferably, for example, a compound represented by the formula (10.1) or the formula (10.2).
- the compound represented by the general formula (II) is preferably a compound selected from the compound group represented by the general formula (II-2), for example.
- R 23 represents an alkenyl group having 2 to 5 carbon atoms
- R 24 represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.
- the compounds represented by the general formula (II-2) can be used depending on required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. Multiple compounds can be combined.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, it is two or more types.
- the content of the compound represented by the general formula (II-2) is low temperature solubility, transition temperature, electrical reliability, birefringence index, process suitability, dropping trace. Therefore, it is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 50% by mass in one embodiment of the present invention.
- the content is 5% to 50% by mass.
- the content is 7% to 50% by mass.
- the content is 10% to 50% by mass.
- the content is 14% to 50% by mass.
- the content is 16% to 50% by mass.
- the content is 20% to 50% by mass.
- the content is 23% to 50% by mass.
- the content is 26% to 50% by mass.
- the content is 30% to 50% by mass.
- the content is 35% to 50% by mass.
- the content is 40% to 50% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 50% by mass in one embodiment of the present invention.
- the content is 3% to 40% by mass.
- the content is 3% to 35% by mass.
- the content is 3% to 30% by mass.
- the content is 3% to 20% by mass.
- the content is 3% to 15% by mass.
- the content is 3% to 10% by mass.
- the content is 3% to 5% by mass.
- the compound represented by the general formula (II-2) is preferably a compound represented by, for example, the formula (11.1) to the formula (11.3).
- the content of the compound represented by formula (11.1) or formula (11.2) is preferably 3% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention.
- it is more than 5 mass% and less than 35 mass%, It is more preferable that it is 5 mass% or more and 30 mass% or less, It is especially preferable that it is 5 mass% or more and 25 mass% or less. % Is most preferred.
- the content of the compound represented by formula (11.1) is preferably 1% by mass or more and 40% by mass or less, and preferably 2% by mass or more and 25% by mass with respect to the total mass of the liquid crystal composition of the present invention. % Or less, more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 5% by mass or more and 15% by mass or less. In a particularly preferable range, the content may be 5 to 10% by mass, 5 to 8% by mass, 8 to 15% by mass, or 10 to 15%. The mass may be 12% by mass or 12-15% by mass.
- the content of the compound represented by the formula (11.2) is preferably 1% by mass or more and 40% by mass or less, and preferably 2% by mass or more and 30% by mass with respect to the total mass of the liquid crystal composition of the present invention. % Or less, more preferably 3% by mass or more and 20% by mass or less, further preferably 4% by mass or more and 15% by mass or less. Among the more preferable ranges, for example, 4 mass% to 12 mass%, 4 mass% to 8 mass%, 4 mass% to 6 mass%, 6 mass% to 15 mass%, 8 mass% to 15 mass%. % Or less, 10 mass% or more and 15 mass% or less, content of 12 mass% or more and 15 mass% or less.
- the total mass of both compounds is with respect to the total mass of the liquid crystal composition of the present invention. It is preferably 10% by mass or more and 45% by mass or less, more preferably 10% by mass or more and 35% by mass or less, and still more preferably 14% by mass or more and 23% by mass or less.
- the compound represented by the general formula (II) is preferably a compound selected from the compound group represented by the general formula (II-3), for example.
- R 25 represents an alkyl group having 1 to 5 carbon atoms
- R 24 represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (II-3) is solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, image sticking, dielectric anisotropy It is necessary to adjust appropriately according to the required performance.
- a preferable content is, for example, a content of the compound of 2 to 45% by mass with respect to the total mass of the liquid crystal composition of the present invention.
- More preferable content is, for example, 5 to 45% by mass, 8 to 45% by mass, 11 to 45% by mass, 14 to 45% by mass, 17 to 45% by mass, 20 to 45% by mass, 23 to 45% by mass, 26 to 45%, 29 to 45%, or 2 to 45%, 2 to 40%, 2 to 35%, 2 to 30%, 2 to 25%, 2 to 20%, 2 To 15% by mass and 2 to 10% by mass.
- the compound represented by the general formula (II-3) is preferably a compound represented by, for example, the formula (12.1) to the formula (12.3).
- the formula (12.2) Or a compound represented by formula (12.1) and a compound represented by formula (12.2) is preferably 3% by mass or more and 40% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. Moreover, it is preferable that content of the compound represented by Formula (12.2) is 3 to 40 mass% with respect to the total mass of the liquid-crystal composition of this invention.
- the total mass of both compounds is with respect to the total mass of the liquid crystal composition of the present invention. It is preferable that it is 15 mass% or more and 45 mass% or less.
- the content of the compound represented by the formula (12.3) is preferably 0.05% by mass or more and 2% by mass or less with respect to the total mass of the liquid crystal composition of the present invention.
- the compound represented by the formula (12.3) may be an optically active compound.
- the compound represented by the general formula (II-3) is preferably a compound selected from the group of compounds represented by the general formula (II-3-1), for example.
- R 25 represents an alkyl group having 1 to 5 carbon atoms
- R 26 represents an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (II-3-1) is preferably adjusted according to required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. 1 mass% or more and 24 mass% or less are preferable, 4 mass% or more and 18 mass% or less are more preferable, and 8 mass% or more and 14 mass% or less are still more preferable.
- the compound represented by the general formula (II-3-1) is preferably, for example, a compound represented by the formula (13.1) to the formula (13.4), in particular, the formula (13.3). It is preferable that it is a compound represented by this.
- the compound represented by general formula (L) is a compound chosen from the compound group represented by general formula (III).
- R 31 and R 32 each independently represents an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (III) is 3% by mass or more and 25% by mass or less with respect to the total mass of the liquid crystal composition of the present invention in consideration of required solubility and birefringence. It is preferable to contain 6% by mass or more and 20% by mass or less, and more preferably 8% by mass or more and 15% by mass or less.
- the compound represented by the general formula (III) is preferably, for example, a compound represented by the formula (15.1) or the formula (15.2), and particularly represented by the formula (15.1). It is preferable that it is a compound.
- the content of the compound represented by the formula (15.1) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 20% by mass or less, and further preferably 1% by mass or more and 10% by mass or less. The content is particularly preferably 2% by mass or more and 8% by mass or less.
- the compound represented by the general formula (III) is preferably a compound selected from the compound group represented by the general formula (III-1).
- R 33 represents an alkenyl group having 2 to 5 carbon atoms.
- R 32 independently represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (III-1) is preferably adjusted according to required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, 4 mass% or more and 23 mass% or less are preferable, 6 mass% or more and 18 mass% or less are more preferable, and 10 mass% or more and 13 mass% or less are still more preferable.
- the compound represented by the general formula (III-1) is preferably, for example, a compound represented by the formula (16.1) or the formula (16.2).
- the compound represented by the general formula (III) is preferably a compound selected from the group of compounds represented by the general formula (III-2).
- R 31 represents an alkyl group having 1 to 5 carbon atoms
- R 34 represents an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (III-2) is preferably adjusted according to required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence and the like.
- the mass is preferably from 23% by mass to 23% by mass, more preferably from 6% by mass to 18% by mass, and still more preferably from 10% by mass to 13% by mass.
- the compound represented by the general formula (III-2) is preferably a compound selected from, for example, a compound group represented by the formula (17.1) to the formula (17.3). .3) is preferred.
- the compound represented by the general formula (L) is preferably selected from the group represented by the general formula (IV).
- R 41 and R 42 each independently represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms
- X 41 and X 42 each independently represent a hydrogen atom or fluorine. Represents an atom.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of this invention, they are three types. Furthermore, in another embodiment of this invention, they are four types. Furthermore, in another embodiment of this invention, they are five types. Furthermore, in another embodiment of this invention, they are six or more types.
- the compound represented by the general formula (IV) is preferably a compound selected from the group of compounds represented by the general formula (IV-1), for example.
- R 43 and R 44 each independently represents an alkyl group having 1 to 5 carbon atoms.
- the content of the compound represented by the general formula (IV-1) is solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, image sticking, dielectric anisotropy It is necessary to adjust appropriately according to the required performance.
- the content of the compound is, for example, 1 to 40% by mass in one embodiment with respect to the total mass of the liquid crystal composition of the present invention. In still another embodiment of the present invention, the content is 2% to 40% by mass. In still another embodiment of the present invention, the content is 4% to 40% by mass. In still another embodiment of the present invention, the content is 6% to 40% by mass. In still another embodiment of the present invention, the content is 8% to 40% by mass. In still another embodiment of the present invention, the content is 10% to 40% by mass. In still another embodiment of the present invention, the content is 12% to 40% by mass. In still another embodiment of the present invention, the content is 15% to 40% by mass. In still another embodiment of the present invention, the content is 18% to 40% by mass. In still another embodiment of the present invention, the content is 21% to 40% by mass.
- the content of the compound is 1 to 40% by mass with respect to the total mass of the liquid crystal composition of the present invention.
- the content is 1% to 30% by mass.
- the content is 1% to 25% by mass.
- the content is 1% to 20% by mass.
- the content is 1% to 15% by mass.
- the content is 1% to 10% by mass.
- the content is 1% to 5% by mass.
- the content is 1% to 4% by mass.
- the compound represented by the general formula (IV-1) is preferably a compound represented by, for example, the formula (18.1) to the formula (18.9).
- the compound represented by the general formula (IV) is preferably a compound selected from the compound group represented by the general formula (IV-2), for example.
- R 45 and R 46 each independently represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, at least one of which is an alkenyl group having 2 to 5 carbon atoms.
- X 41 and X 42 each independently represents a hydrogen atom or a fluorine atom.
- the content of the compound represented by the general formula (IV-2) is solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, image sticking, dielectric anisotropy It is necessary to adjust appropriately according to the required performance.
- the content of the compound is preferably 0.5 to 40% by mass with respect to the total mass of the liquid crystal composition of the present invention. More preferable contents are, for example, 1 to 40% by mass, 2 to 40% by mass, 3 to 40% by mass, 5 to 40% by mass, 7 to 40% by mass, 9 to 40% by mass, and 12 to 40% by mass. 15-40% by mass, 20-40% by mass, or 1-40% by mass, 1-30% by mass, 1-25% by mass, 1-20% by mass, 1-15% by mass, 1-10% by mass 1 to 5% by mass, and 1 to 4% by mass.
- the compound represented by the general formula (IV-2) is preferably, for example, a compound represented by the formula (19.1) to the formula (19.8), among which the formula (19.2) It is preferable that it is a compound represented by these.
- the wide molecular weight distribution of the compound selected as the component of the liquid crystal composition is also effective for solubility, for example, one type of the compound represented by formula (19.1) or (19.2), formula (19 .3) or one type from the compound represented by (19.4), one type from the compound represented by formula (19.5) or formula (19.6), formula (19.7) or (19. It is preferable to select one compound from the compounds represented by 8) and combine them appropriately.
- the content of the compound represented by formula (19.2) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like. It is preferable that they are 0.5 mass% or more and 15 mass% or less with respect to the total mass of.
- the content of the compound represented by the formula (19.4) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, still more preferably 5% by mass or more and 15% by mass or less. 7 mass% or more and 13 mass% or less is particularly preferable.
- the compound represented by the general formula (L) is preferably a compound selected from the group represented by the general formula (V).
- each R 51 and R 52 are 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 2 to 5
- a 51 and A 52 independently represents a 1,4-cyclohexylene group or 1,4-phenylene group
- Q 5 represents a single bond or —COO—
- X 51 and X 52 each independently represent a fluorine atom or a hydrogen atom. Represents.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of this invention, they are three types. Furthermore, in another embodiment of this invention, they are four types.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 40% by mass in one embodiment. In still another embodiment of the present invention, the content is 4% to 40% by mass. In still another embodiment of the present invention, the content is 7% to 40% by mass. In still another embodiment of the present invention, the content is 10% to 40% by mass. In still another embodiment of the present invention, the content is 12% to 40% by mass. In still another embodiment of the present invention, the content is 15% to 40% by mass. In still another embodiment of the present invention, the content is 17% to 40% by mass. In still another embodiment of the present invention, the content is 18% to 40% by mass. In still another embodiment of the present invention, the content is 20% to 40% by mass. In still another embodiment of the present invention, the content is 22% to 40% by mass.
- the content of the compound is 2 to 40% by mass with respect to the total mass of the liquid crystal composition of the present invention.
- the content of the compound is 2% to 30% by mass.
- the content of the compound is 2% to 25% by mass.
- the content of the compound is 2% to 20% by mass.
- the content of the compound is 2% to 15% by mass.
- the content of the compound is 2% to 10% by mass.
- the content of the compound is 2% to 5% by mass.
- the content of the compound is 2% to 4% by mass.
- the compound represented by the general formula (V) is preferably a compound represented by the general formula (V-1).
- R 51 and R 52 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or alkoxy having 1 to 4 carbon atoms, and X 51 and X 52 Each independently represents a fluorine atom or a hydrogen atom.
- the compound represented by the general formula (V-1) is preferably a compound represented by the general formula (V-1-1).
- R 51 and R 52 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (V-1-1) is preferably contained in an amount of 1% by mass to 15% by mass with respect to the total mass of the liquid crystal composition of the present invention, and preferably 2% by mass to 15% by mass. More preferably, it is contained, more preferably 3% by mass or more and 10% by mass or less, and particularly preferably 4% by mass or more and 8% by mass or less.
- the compound represented by the general formula (V-1-1) is preferably a compound represented by the formula (20.1) to the formula (20.4), and represented by the formula (20.2). It is preferable that it is a compound.
- the content of the compound represented by the formula (20.2) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, birefringence, and the like. On the other hand, it is preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 15% by mass or less, still more preferably 1% by mass or more and 10% by mass or less, and particularly preferably 2% by mass or more and 8% by mass or less. preferable.
- the compound represented by the general formula (V-1-1) is preferably a compound represented by the formula (20.5) to the formula (20.8).
- the liquid crystal composition of the present invention preferably contains a compound represented by the formula (20.7) and / or a compound represented by the formula (20.8).
- the content of the compound represented by the formula (20.7) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like. On the other hand, it is preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 15% by mass or less, still more preferably 1% by mass or more and 10% by mass or less, and particularly preferably 2% by mass or more and 8% by mass or less. preferable.
- the content of the compound represented by the formula (20.8) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like. On the other hand, it is preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 15% by mass or less, still more preferably 1% by mass or more and 10% by mass or less, and particularly preferably 2% by mass or more and 8% by mass or less. preferable.
- the total content of the two compounds represented by formula (20.7) and formula (20.8) takes into account solubility at low temperatures, transition temperature, electrical reliability, birefringence and the like.
- the content of the liquid crystal composition of the present invention is preferably 1% by mass or more and 30% by mass or less, more preferably 3% by mass or more and 20% by mass or less, and further more preferably 5% by mass or more and 15% by mass or less.
- 7 mass% or more and 13 mass% or less are especially preferable.
- the compound represented by the general formula (V-1) is preferably a compound represented by the general formula (V-1-2).
- R 51 and R 52 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (V-1-2) is preferably contained in an amount of 1% by mass to 15% by mass with respect to the total mass of the liquid crystal composition of the present invention. More preferably, it is contained, more preferably 3% by mass or more and 10% by mass or less, and particularly preferably 4% by mass or more and 8% by mass or less.
- the compound represented by the general formula (V-1-2) is preferably a compound represented by the formula (21.1) to the formula (21.3), and represented by the formula (21.1). It is preferable that it is a compound.
- the compound represented by the general formula (V-1) is preferably a compound represented by the general formula (V-1-3).
- R 51 and R 52 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (V-1-3) is preferably contained in an amount of 1% by mass to 15% by mass with respect to the total mass of the liquid crystal composition of the present invention, and preferably 2% by mass to 15% by mass. It is more preferable to contain it, it is more preferable to contain 3 mass% or more and 10 mass% or less, and it is especially preferable to contain 4 mass% or more and 8 mass% or less.
- the compound represented by the general formula (V-1-3) is a compound represented by the formula (22.1) to the formula (22.3). It is preferable that it is a compound represented by Formula (22.1).
- the compound represented by the general formula (V) is preferably a compound represented by the general formula (V-2).
- each of R 51 and R 52 are 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 2 to 5
- X 51 and X 52 each independently represents a fluorine atom or a hydrogen atom.
- V-2 the compounds represented by the general formula (V-2) can be used depending on required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. Multiple compounds can be combined.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, it is two or more types.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 40% by mass in one embodiment. In still another embodiment of the present invention, the content of the compound is 4% to 40% by mass. In still another embodiment of the present invention, the content of the compound is 7% to 40% by mass. In still another embodiment of the present invention, the content of the compound is 10% to 40% by mass. In still another embodiment of the present invention, the content of the compound is 12% to 40% by mass. In still another embodiment of the present invention, the content of the compound is 15% to 40% by mass. In still another embodiment of the present invention, the content of the compound is 17% to 40% by mass. In still another embodiment of the present invention, the content of the compound is 18% to 40% by mass. In still another embodiment of the present invention, the content of the compound is 20% to 40% by mass. In still another embodiment of the present invention, the content of the compound is 22% to 40% by mass.
- the content of the compound is 2 to 40% by mass with respect to the total mass of the liquid crystal composition of the present invention.
- the content of the compound is 2% to 30% by mass.
- the content of the compound is 2% to 25% by mass.
- the content of the compound is 2% to 20% by mass.
- the content of the compound is 2% to 15% by mass.
- the content of the compound is 2% to 10% by mass.
- the content of the compound is 2% to 5% by mass.
- the content of the compound is 2% to 4% by mass.
- the compound represented by the general formula (V-2) is preferably a compound represented by the general formula (V-2-1).
- R 51 and R 52 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (V-2-1) is preferably a compound represented by the formula (23.1) to the formula (23.4), and the formula (23.1) or the formula The compound represented by (23.2) is preferable.
- the content of the compound represented by the formula (23.1) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferable that they are 1 mass% or more and 25 mass% or less with respect to the total mass of.
- the content of the compound represented by the formula (23.2) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferable that they are 1 mass% or more and 25 mass% or less with respect to the total mass of.
- the total content of the compound represented by the formula (23.1) and the compound represented by the formula (23.2) is low temperature solubility, transition temperature, electrical Considering reliability and the like, the content is preferably 1% by mass or more and 25% by mass or less with respect to the total mass of the liquid crystal composition of the present invention.
- the compound represented by the general formula (V-2) is preferably a compound represented by the general formula (V-2-2).
- R 51 and R 52 each independently represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (V-2-2) is preferably a compound represented by the formula (24.1) to the formula (24.4).
- a compound represented by (24.2) is preferable.
- the liquid crystal composition of the present invention preferably contains any one or more of the compounds represented by the following general formula (M).
- R M1 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 —CH ⁇ CH—, — Optionally substituted by C ⁇ C—, —O—, —CO—, —COO— or —OCO—, PM represents 0, 1, 2, 3 or 4;
- C M1 and C M2 are each independently (D) 1,4-cyclohexylene group (this is present in the group one -CH 2 - or nonadjacent two or more -CH 2 - may be replaced by -O- or -S- And (e) a 1,4-phenylene group (one —CH ⁇ present in the group or two or more non-adjacent —CH ⁇ may be replaced by —N ⁇ ).
- K M1 and K M2 are each independently a single bond, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, Represents —COO—, —OCO— or —C ⁇ C—,
- X M1 and X M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom
- X M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a
- the types of compounds that can be combined are represented by the general formula (M) according to desired performance such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence.
- M general formula
- a plurality of compounds can be used in combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of this invention, they are three types. Furthermore, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of this invention, they are five types. Furthermore, in another embodiment of the present invention, there are six types. Furthermore, in another embodiment of this invention, they are seven or more types.
- the content of the compound represented by the general formula (M) is low temperature solubility, transition temperature, electrical reliability, birefringence, process suitability, dripping marks, image sticking. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 1 to 95% by mass in one embodiment of the present invention.
- the content of the compound is 10% to 95% by mass.
- the content of the compound is 20% to 95% by mass.
- the content of the compound is 30% to 95% by mass.
- the content of the compound is 40% to 95% by mass.
- the content of the compound is 45% to 95% by mass.
- the content of the compound is 50% to 95% by mass.
- the content of the compound is 55% to 95% by mass.
- the content of the compound is 60% to 95% by mass.
- the content of the compound is 65% to 95% by mass.
- the content of the compound is 70% to 95% by mass.
- the content of the compound is 75% to 95% by mass.
- the content of the compound is 80% to 95% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 1 to 95% by mass in one embodiment of the present invention.
- the content of the compound is 1% to 85% by mass.
- the content of the compound is 1% to 75% by mass.
- the content of the compound is 1% to 65% by mass.
- the content of the compound is 1% to 55% by mass.
- the content of the compound is 1% to 45% by mass.
- the content of the compound is 1% to 35% by mass.
- the content of the compound is 1% to 25% by mass.
- the liquid crystal composition of the present invention maintains a low viscosity and a liquid crystal composition having a high response speed is required, it is preferable to lower the lower limit value and lower the upper limit value. Furthermore, when the liquid crystal composition of the present invention maintains a high Tni and a liquid crystal composition with good temperature stability is required, it is preferable to lower the lower limit and lower the upper limit. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to increase the upper limit value while increasing the lower limit value.
- R M1 represents a linear alkyl group having 1 to 5 carbon atoms or a linear alkoxy group having 1 to 4 carbon atoms when the ring structure to which R M1 is bonded is a phenyl group (aromatic). And an alkenyl group having 4 to 5 carbon atoms, and when the ring structure to which it is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, a linear alkyl group having 1 to 5 carbon atoms, 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 compound represented by the general formula (M) preferably has no chlorine atom in the molecule when the chemical stability of the liquid crystal composition is required. Further, the compound having a chlorine atom in the liquid crystal composition is preferably 5% or less, preferably 3% or less, preferably 1% or less, preferably 0.5% or less, It is preferable not to contain substantially. “Substantially not contained” means that only a compound containing a chlorine atom unintentionally enters the liquid crystal composition, such as a compound produced as an impurity during compound production.
- the compound represented by General Formula (M) is preferably a compound selected from the group of compounds represented by General Formula (VIII), for example.
- R 8 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- X 81 to X 85 each independently represents hydrogen
- Y 8 represents a fluorine atom or —OCF 3 .
- the types of compounds that can be combined are represented by the general formula (VIII) depending on the desired performance such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence.
- VIII general formula
- a plurality of compounds can be used in combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of this invention, they are three or more types.
- the content of the compound represented by the general formula (VIII) is low temperature solubility, transition temperature, electrical reliability, birefringence, process suitability, dripping marks, image sticking. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 40% by mass in one embodiment of the present invention.
- the content of the compound is 4% to 40% by mass.
- the content of the compound is 5% to 40% by mass.
- the content of the compound is 6% to 40% by mass.
- the content of the compound is 7% to 40% by mass.
- the content of the compound is 8% to 40% by mass.
- the content of the compound is 9% to 40% by mass.
- the content of the compound is 10% to 40% by mass.
- the content of the compound is 11% to 40% by mass.
- the content of the compound is 12% to 40% by mass.
- the content of the compound is 14% to 40% by mass.
- the content of the compound is 15% to 40% by mass.
- the content of the compound is 21% to 40% by mass.
- the content of the compound is 23% to 40% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 40% by mass in one embodiment of the present invention.
- the content of the compound is 2% to 30% by mass.
- the content of the compound is 2% to 25% by mass.
- the content of the compound is 2% to 21% by mass.
- the content of the compound is 2% to 16% by mass.
- the content of the compound is 2% to 12% by mass.
- the content of the compound is 2% to 8% by mass.
- the content of the compound is 2% to 5% by mass.
- the liquid crystal composition of the present invention maintains a low viscosity and a liquid crystal composition having a high response speed is required, it is preferable to lower the lower limit value and lower the upper limit value. Furthermore, when the liquid crystal composition of the present invention maintains a high Tni and a liquid crystal composition with good temperature stability is required, it is preferable to lower the lower limit and lower the upper limit. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to increase the upper limit value while increasing the lower limit value.
- the compound represented by the general formula (VIII) is preferably a compound represented by the general formula (VIII-1).
- R 8 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compounds represented by the above general formula (VIII-1) can be used depending on desired properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- a plurality of compounds can be used in combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, it is two or more types.
- the compound represented by the general formula (VIII-1) is specifically preferably a compound represented by the formula (26.1) to the formula (26.4), and the formula (26.1) Or the compound represented by Formula (26.2) is preferable, and the compound represented by Formula (26.2) is more preferable.
- the content of the compound represented by the formula (26.1) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, birefringence, and the like. On the other hand, it is preferably 1% by mass to 40% by mass, preferably 1% by mass to 20% by mass, more preferably 1% by mass to 10% by mass, and more preferably 1% by mass to 5% by mass. The following is more preferable.
- the content of the compound represented by the formula (26.2) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like. On the other hand, it is preferably 1% by mass or more and 30% by mass or less, more preferably 2% by mass or more and 25% by mass or less, further preferably 3% by mass or more and 20% by mass or less, and particularly preferably 4% by mass or more and 15% by mass or less. preferable. Among the particularly preferable ranges, the content may be 4% by mass or more and 10% by mass or less, 4% by mass or more and 7% by mass or less, or 4% by mass or more and 6% by mass or less.
- the total content of the compound represented by the formula (26.1) and the compound represented by the formula (26.2) is preferably 1 to 40% by mass with respect to the total mass of the liquid crystal composition of the present invention. It is more preferably 3 to 30% by mass, further preferably 5 to 20% by mass, and particularly preferably 8 to 16% by mass.
- the compound represented by the general formula (VIII) is preferably a compound represented by the general formula (VIII-2).
- R 8 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compounds represented by the above general formula (VIII-2) can be used depending on desired properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- a plurality of compounds can be used in combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Or in another embodiment of this invention, they are three or more types.
- the content of the compound represented by the general formula (VIII-2) is 2.5% by mass or more and 25% by mass or less in consideration of solubility at a low temperature, transition temperature, electrical reliability, birefringence and the like. Preferably, it is 8 mass% or more and 25 mass% or less, More preferably, it is 10 mass% or less 20 mass% or less, More preferably, it is 12 mass% or more and 15 mass% or less.
- the compound represented by the general formula (VIII-2) is preferably a compound represented by the formula (27.1) to the formula (27.4), and is represented by the formula (27.2).
- a compound is preferred.
- the compound represented by the general formula (VIII) is preferably a compound represented by the general formula (VIII-3).
- R 8 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compounds represented by the above general formula (VIII-3) can be used depending on desired properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- a plurality of compounds can be used in combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, it is two or more types.
- the compound represented by the general formula (VIII-3) is specifically preferably a compound represented by the formula (26.11) to the formula (26.14). Or the compound represented by Formula (26.12) is preferable, and the compound represented by Formula (26.12) is more preferable.
- the compound represented by the general formula (M) is preferably a compound selected from the compound group represented by the general formula (IX), for example.
- the compound represented by the general formula (i) is excluded.
- R 9 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- X 91 and X 92 are each independently hydrogen.
- An atom or a fluorine atom Y 9 represents a fluorine atom, a chlorine atom or —OCF 3
- U 9 represents a single bond, —COO— or —CF 2 O—.
- the types of compounds that can be combined are represented by the general formula (IX) according to desired performance such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence.
- a plurality of compounds can be used in combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of this invention, they are three types. Furthermore, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of this invention, they are five types. Furthermore, in another embodiment of this invention, they are six or more types.
- the content of the compound represented by the general formula (IX) is low temperature solubility, transition temperature, electrical reliability, birefringence, process suitability, dripping marks, and burn-in. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 70% by mass in one embodiment of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is 5% to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 8% to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 10% to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 12% to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 15% to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 17% to 70% by mass.
- the content of the compound is 20% to 70% by mass.
- the content of the compound is 24% to 70% by mass.
- the content of the compound is 28% to 70% by mass.
- the content of the compound is 30% to 70% by mass.
- the content of the compound is 34% to 70% by mass.
- the content of the compound is 39% to 70% by mass.
- the content of the compound is 40% to 70% by mass.
- the content of the compound is 42% to 70% by mass.
- the content of the compound is 45% to 70% by mass.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is, for example, 3 to 70% by mass in one embodiment of the present invention.
- the content of the compound is 3% to 60% by mass.
- the content of the compound is 3% to 55% by mass.
- the content of the compound is 3% to 50% by mass.
- the content of the compound is 3% to 45% by mass.
- the content of the compound is 3% to 40% by mass.
- the content of the compound is 3% to 35% by mass.
- the content of the compound is 3% to 30% by mass. In still another embodiment of the present invention, the content is 25% by mass. In still another embodiment of the present invention, the content of the compound is 3% to 20% by mass. In still another embodiment of the present invention, the content of the compound is 3% to 15% by mass. In still another embodiment of the present invention, the content of the compound is 3% to 10% by mass.
- the liquid crystal composition of the present invention maintains a low viscosity and a liquid crystal composition having a high response speed is required, it is preferable to lower the lower limit value and lower the upper limit value. Furthermore, when the liquid crystal composition of the present invention requires a high Tni and a liquid crystal composition that does not easily cause burn-in, it is preferable to lower the lower limit and lower the upper limit. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to increase the upper limit value while increasing the lower limit value.
- the compound represented by the general formula (IX) is preferably a compound represented by the general formula (IX-1).
- R 9 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- X 92 represents a hydrogen atom or a fluorine atom
- Y 9 represents a fluorine atom or —OCF 3.
- the compounds represented by the general formula (IX-1) can be used depending on desired properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence.
- a plurality of compounds can be used in combination.
- the kind of the compound used is, for example, one kind as one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of this invention, they are three types. Furthermore, in another embodiment of this invention, they are four or more types.
- the compound represented by the general formula (IX-1) is preferably a compound represented by the general formula (IX-1-1).
- R 9 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (IX-1-1) with respect to the total mass of the liquid crystal composition of the present invention includes solubility at low temperature, transition temperature, electrical reliability, birefringence and the like. In consideration, there are preferred upper and lower limits depending on the embodiment.
- the content of the compound with respect to the total mass is 1 to 40% by mass in one embodiment, 1 to 35% by mass in another embodiment, 1 to 30% by mass in yet another embodiment, and yet another implementation. 1 to 25% by weight in a form, 1 to 10% by weight in yet another embodiment, 1 to 7% by weight in yet another embodiment, and 1 to 5% by weight in yet another embodiment.
- the compound represented by the general formula (IX-1-1) is preferably a compound represented by the formula (28.1) to the formula (28.5).
- the liquid crystal composition preferably contains any one or two of the compounds represented by formula (28.3) and formula (28.5).
- the content of the compound represented by the formula (28.3) is determined by considering the solubility at a low temperature, the transition temperature, the electrical reliability, etc. 1% by mass or more and 30% by mass or less is preferable, 1% by mass or more and 20% by mass or less is more preferable, 1% by mass or more and 15% by mass or less is more preferable, and 2% by mass or more and 10% by mass or less is particularly preferable. preferable.
- the content may be 2% by mass or more and 8% by mass or less, 2% by mass or more and 7% by mass or less, or 2% by mass or more and 5% by mass or less. 5 mass% or more and 10 mass% or less may be sufficient, 7 mass% or more and 10 mass% or less may be sufficient, and 8 mass% or more and 10 mass% or less may be sufficient. 9 mass% or more and 10 mass% or less may be sufficient.
- the content of the compound represented by the formula (28.5) is determined in consideration of the solubility at low temperatures, the transition temperature, the electrical reliability, and the like. It is preferably 1% by mass or more and 30% by mass or less, more preferably 2% by mass or more and 20% by mass or less, still more preferably 3% by mass or more and 15% by mass or less, and more preferably 5% by mass or more and 10% by mass relative to the mass.
- the following are particularly preferred:
- the content may be 5% by mass or more and 7% by mass or less, or 8% by mass or more and 10% by mass or less.
- the total content of the compound represented by the formula (28.3) and the compound represented by the formula (28.5) is 5 with respect to the total mass of the liquid crystal composition.
- the mass% is preferably 35% by mass or less, more preferably 10% by mass or more and 25% by mass or less, and further preferably 15% by mass or more and 18% by mass or less. Furthermore, 15 mass% or more and 16 mass% or less may be sufficient as the said content among preferable ranges, and 17 mass% or more and 18 mass% or less may be sufficient.
- the relative content thereof is the formula (28.3).
- the content of the compound represented by () may be larger, or the content of the compound represented by the formula (28.5) may be larger, but the Tni of the liquid crystal composition is increased. From the viewpoint, it is preferable that the content of the compound represented by the formula (28.5) is larger.
- the compound represented by the general formula (IX-1) is preferably a compound represented by the general formula (IX-1-2).
- R 9 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (IX-1-2) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass or more and 30% by mass or less, more preferably 5% by mass or more and 30% by mass or less, further preferably 8% by mass or more and 30% by mass or less, and further preferably 10% by mass or more and 25% by mass or less. 14 mass% or more and 22 mass% or less are more preferable, and 16 mass% or more and 20 mass% or less are especially preferable.
- the compound represented by the general formula (IX-1-2) is preferably a compound represented by the formula (29.1) to the formula (29.4), and the formula (29.2) or the formula (29.2) The compound represented by (29.4) is preferable.
- the compound represented by the general formula (IX) is preferably a compound represented by the general formula (IX-2).
- R 9 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- X 91 and X 92 are each independently hydrogen.
- one embodiment of the present invention has one type, another embodiment has two types, yet another embodiment has three types, yet another embodiment has four types, and yet another embodiment has five types, In still another embodiment, six or more types are combined.
- R 9 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (IX-2-2) is an upper limit for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. There is a lower limit.
- the content of the compound is 1 to 40% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 2 to 40% by mass. %, In still another embodiment the content of the compound is 4-40% by weight, in yet another embodiment the content of the compound is 10-40% by weight, and in yet another embodiment the content of the compound In still another embodiment, the content is 14-40% by mass, and in still another embodiment, the content of the compound is 21-40% by mass.
- the content of the compound is 1 to 40% by mass in another embodiment of the present invention, and in another embodiment, the content of the compound is 1 to 35% by mass. In this embodiment, the content of the compound is 1 to 30% by mass. In still another embodiment, the content of the compound is 1 to 25% by mass. In still another embodiment, the content of the compound is 1 to 30% by mass. In still another embodiment, the content of the compound is 1 to 15% by mass. In still another embodiment, the content of the compound is 1 to 12% by mass. In still another embodiment, the content of the compound is 1 to 15% by mass. The content of the compound is 1 to 8% by mass, and in still another embodiment, the content of the compound is 1 to 4% by mass.
- the compound represented by the general formula (IX-2-2) is preferably a compound represented by the formula (31.1) to the formula (31.4), from the formula (31.2) to the formula A compound represented by (31.4) is more preferred, and a compound represented by formula (31.2) is even more preferred.
- the content of the compound represented by the formula (31.2) is preferably 1% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention. It is more preferably 2% by mass or more and 20% by mass or less, further preferably 3% by mass or more and 10% by mass or less, and particularly preferably 5% by mass or more and 8% by mass or less. In a particularly preferable range, the content may be 5 to 6% by mass or 7 to 8% by mass.
- the content of the compound represented by the formula (31.4) is preferably 1% by mass or more and 35% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. It is more preferably 1% by mass or more and 20% by mass or less, further preferably 1% by mass or more and 10% by mass or less, and particularly preferably 1% by mass or more and 5% by mass or less.
- the total content of the compound represented by the formula (31.2) and the compound represented by the formula (31.4) is based on the total mass of the liquid crystal composition of the present invention. It is preferably 2% by mass or more and 35% by mass or less, more preferably 5% by mass or more and 25% by mass or less, and further preferably 7% by mass or more and 15% by mass or less.
- the compound represented by the general formula (IX-2) is preferably a compound represented by the general formula (IX-2-4).
- R 9 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (IX-2-4) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass to 30% by mass, more preferably 3% by mass to 20% by mass, further preferably 6% by mass to 15% by mass, and particularly preferably 8% by mass to 10% by mass. .
- the compound represented by the general formula (IX-2-4) is preferably a compound represented by the formula (33.1) to the formula (33.5), and the formula (33.1) and / or Or it is preferable that it is a compound represented by Formula (33.3).
- the compound represented by the general formula (IX-2) is preferably a compound represented by the general formula (IX-2-5).
- R 9 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compounds can be represented by the general formula (IX-2-5).
- a plurality of compounds can be used in appropriate combination for each embodiment. For example, one embodiment of the present invention has one type, another embodiment has two types, yet another embodiment has three types, and yet another embodiment has four or more types.
- the content of the compound represented by the general formula (IX-2-5) is an upper limit for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. There is a lower limit.
- the content of the compound is 4 to 45% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 8 to 45% by mass.
- the content of the compound is 12 to 45% by mass.
- the content of the compound is 21 to 45% by mass.
- the content of the compound is in still another embodiment, the content of the compound is 31-45% by mass, and in still another embodiment, the content of the compound is 34-45% by mass.
- the content of the compound is 4 to 45% by mass in another embodiment of the present invention, and in another embodiment, the content of the compound is 4 to 40% by mass.
- the content of the compound is 4 to 35% by mass, and in still another embodiment, the content of the compound is 4 to 32% by mass.
- the content of the compound is 4 to In still another embodiment, the content of the compound is 4 to 13% by mass.
- the content of the compound is 4 to 9% by mass.
- the content of the compound is 4 to 13% by mass.
- the content of the compound is 4 to 8% by mass, and in still another embodiment, the content of the compound is 4 to 5% by mass.
- the liquid crystal composition of the present invention maintains a low viscosity and a liquid crystal composition having a high response speed is required, it is preferable to lower the lower limit value and lower the upper limit value. Furthermore, when the liquid crystal composition of the present invention requires a high Tni and a liquid crystal composition that does not easily cause burn-in, it is preferable to lower the lower limit and lower the upper limit. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to increase the upper limit value while increasing the lower limit value.
- the compound represented by the general formula (IX-2-5) is preferably a compound represented by the formula (34.1) to the formula (34.5), and the formula (34.1), the formula A compound represented by (34.2), formula (34.3) and / or formula (34.5) is more preferable.
- the compound represented by general formula (M) is a compound represented by general formula (X).
- the compound represented by general formula (ii) is excluded.
- X 101 to X 104 each independently represents a fluorine atom or a hydrogen atom
- Y 10 represents a fluorine atom, a chlorine atom or —OCF 3
- Q 10 represents a single bond or —CF 2 O—.
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- a 101 and A 102 are each independently 1,4 -Cyclohexylene group, 1,4-phenylene group or
- the hydrogen atom on the 1,4-phenylene group may be substituted with a fluorine atom.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the above general formula (X) are carried out in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, etc. It can combine suitably for every form.
- the content of the compound represented by the general formula (X) has an upper limit value and a lower limit value for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. is there.
- the content of the compound is 2 to 45% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 3 to 45% by mass.
- the content of the compound is 6 to 45% by mass.
- the content of the compound is 8 to 45% by mass.
- the content of the compound is In still another embodiment, the content of the compound is 11-45% by mass, and in still another embodiment, the content of the compound is 12-45% by mass. In still another embodiment, the content of the compound is 18% to 45% by mass. In still another embodiment, the content of the compound is 19% to 45% by mass. In still another embodiment, the content of the compound is 23% to 45% by mass. In still another embodiment, the content of the compound is 25% to 45% by mass. In addition, for example, in one embodiment of the present invention, the content of the compound is 2 to 45% by mass with respect to the total mass, and in another embodiment, the content of the compound is 2 to 35% by mass. In this embodiment, the content of the compound is 2 to 30% by mass.
- the content of the compound is 2 to 25% by mass. In still another embodiment, the content of the compound is 2 to 2% by mass. In still another embodiment, the content of the compound is 2 to 13% by mass. In still another embodiment, the content of the compound is 2 to 9% by mass. In still another embodiment, the content of the compound is 2 to 13% by mass. The content of the compound is 2 to 6% by mass, and in still another embodiment, the content of the compound is 2 to 3% by mass.
- the liquid crystal composition of the present invention maintains a low viscosity and a liquid crystal composition having a high response speed is required, it is preferable to lower the lower limit value and lower the upper limit value. Furthermore, when a liquid crystal composition that does not easily cause burn-in is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to increase the upper limit value while increasing the lower limit value.
- the compound represented by the general formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-1).
- X 101 to X 103 each independently represents a fluorine atom or a hydrogen atom
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or 1 to 4 represents an alkoxy group.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the general formula (X-1) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence and the like Can be appropriately combined for each embodiment.
- a plurality of compounds represented by the general formula (X-1) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence and the like Can be appropriately combined for each embodiment.
- there are four types In still another embodiment, there are five or more types.
- the content of the compound represented by the general formula (X-1) is an upper limit and a lower limit for each embodiment in consideration of properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. There is a value.
- the content of the compound is 2 to 40% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 3 to 40% by mass. %, In still another embodiment the content of the compound is 5-40% by weight, in yet another embodiment the content of the compound is 6-40% by weight, and in yet another embodiment the content of the compound In still another embodiment, the content of the compound is 8 to 40% by mass, and in still another embodiment, the content of the compound is 9 to 40% by mass. In still another embodiment, the content of the compound is 13% to 40% by mass. In still another embodiment, the content of the compound is 18% to 40% by mass. In still another embodiment, the content of the compound is 23% to 40% by mass.
- the content of the compound is 2 to 40% by mass with respect to the total mass, and in another embodiment, the content of the compound is 2 to 30% by mass. In another embodiment, the content of the compound is 2 to 25% by mass. In still another embodiment, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 2% by mass. 15% by weight, in yet another embodiment the content of the compound is 2-10% by weight, in yet another embodiment the content of the compound is 2-6% by weight, and in yet another embodiment the content is The content of the compound is 2 to 4% by mass.
- the compound represented by the general formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-1-1).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the above general formula (X-1-1) are considered in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. These compounds can be appropriately combined for each embodiment. For example, in one embodiment of the present invention, there is one. In another embodiment of the present invention, there are two types. In still another embodiment, there are three types. In still another embodiment, there are four or more types.
- the content of the compound represented by the general formula (X-1-1) is an upper limit for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. There is a lower limit.
- the content of the compound is 3 to 30% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 4 to 30%.
- the content of the compound is 6 to 30% by mass.
- the content of the compound is 9 to 30% by mass.
- the content of the compound is The content is 12-30% by mass, and in still another embodiment, the content of the compound is 15-30% by mass, and in still another embodiment, the content of the compound is 18-30% by mass. In still another embodiment, the content of the compound is 21% to 30% by mass.
- the content of the compound is 3 to 30% by mass with respect to the total mass, and in another embodiment, the content of the compound is 3 to 20% by mass. In another embodiment, the content of the compound is 3 to 13% by mass. In still another embodiment, the content of the compound is 3 to 10% by mass. In still another embodiment, the content of the compound is 3 to 3% by mass. 7% by mass.
- the compounds represented by the general formula (X-1-1) used in the liquid crystal composition of the present invention are specifically compounds represented by the formulas (36.1) to (36.4). Among them, it is preferable to contain a compound represented by formula (36.1) and / or formula (36.2).
- the compound represented by the general formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-1-2).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (X-1-2) is preferably 1% by mass or more, more preferably 2% by mass or more, based on the total mass of the liquid crystal composition of the present invention.
- the mass% or more is more preferable.
- the maximum ratio is preferably 20% by mass or less, more preferably 16% by mass or less, and even more preferably 12% by mass or less. 10 mass% or less is especially preferable.
- the content is 1 to 10% by mass, 2 to 8% by mass, 2 to 7% by mass, 2 to 5% by mass, 4 to 8% by mass, and 5 to 8% by mass. The embodiment which is these can be illustrated.
- the compound represented by the general formula (X-1-2) is preferably a compound represented by the formula (37.1) to the formula (37.4), among which the formula (37. It is preferable to contain the compound represented by 2).
- the content of the compound represented by the formula (37.2) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like.
- the total mass is preferably 1% by mass or more and 25% by mass or less, more preferably 3 to 20% by mass, still more preferably 5 to 15% by mass, and particularly preferably 7 to 13% by mass.
- the compound represented by the general formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-1-3).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (X-1-3) is preferably 1% by mass or more, more preferably 2% by mass or more, based on the total mass of the liquid crystal composition of the present invention.
- the mass% or more is more preferable.
- the maximum ratio is preferably 20% by mass or less, more preferably 16% by mass or less, and even more preferably 12% by mass or less. 10 mass% or less is especially preferable.
- the content is 1 to 10% by mass, 3 to 8% by mass, 2 to 6% by mass, 2 to 5% by mass, 2 to 4% by mass, 3 to 6% by mass, Examples are 4-6% by mass and 5-6% by mass.
- the compound represented by the general formula (X-1-3) is preferably a compound represented by the formula (38.1) to the formula (38.4), among which the formula (38. It is preferable to contain the compound represented by 2).
- the content of the compound represented by the formula (38.2) is preferably 1% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention.
- the content is more preferably 2% by mass or less and 25% by mass or less, and more preferably 3% by mass or more and 20% by mass or less.
- the compound represented by the general formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-2).
- X 102 to X 103 each independently represents a fluorine atom or a hydrogen atom
- Y 10 represents a fluorine atom, a chlorine atom or —OCF 3
- R 10 represents an alkyl group having 1 to 5 carbon atoms
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the general formula (X-2) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence and the like Among these, it is preferable to combine one or more types.
- the compound represented by the general formula (X-2) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-2-1).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (X-2-1) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass to 30% by mass, more preferably 1% by mass to 20% by mass, and still more preferably 1% by mass to 10% by mass.
- the compounds represented by the general formula (X-2-1) used in the liquid crystal composition of the present invention are specifically compounds represented by the formulas (39.1) to (39.4).
- the content of the compound represented by the formula (39.2) is preferably 1% by mass or more and 30% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. It is more preferably 1% by mass or less and 20% by mass or less, and further preferably 1% by mass or more and 10% by mass or less.
- the compound represented by the general formula (X-2) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-2-2).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the above general formula (X-2-2) are considered in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. Of these compounds, it is preferable to combine one or more kinds.
- the content of the compound represented by the general formula (X-2-2) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. 3 mass% or more and 20 mass% or less is preferable, 6 mass% or more and 16 mass% or less is more preferable, 9 mass% or more and 12 mass% or less is more preferable, and 9 mass% or more and 10 mass% or less is especially preferable. .
- the compounds represented by the general formula (X-2-2) used in the liquid crystal composition of the present invention are specifically compounds represented by the formulas (40.1) to (40.4). In particular, it is preferable to contain a compound represented by the formula (40.2).
- the compound represented by the general formula (X) is preferably a compound represented by the general formula (X-3).
- X 102 to X 103 each independently represents a fluorine atom or a hydrogen atom, and R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or 1 to 4 represents an alkoxy group.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the general formula (X-3) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like Among these, it is preferable to combine one or more types.
- the compound represented by the general formula (X-3) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-3-1).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (X-3-1) is preferably 1% by mass or more, more preferably 2% by mass or more, based on the total mass of the liquid crystal composition of the present invention.
- the mass% or more is more preferable.
- the maximum ratio is preferably 10% by mass or less, more preferably 8% by mass or less, and even more preferably 6% by mass or less. 4 mass% or less is especially preferable.
- the compounds represented by the general formula (X-3-1) used in the liquid crystal composition of the present invention are specifically compounds represented by the formulas (41.1) to (41.4).
- the content of the compound represented by the formula (41.2) is 0.5% by mass or more and 15% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. Preferably, it is 1 mass% or more and 10 mass% or less.
- the compound represented by the general formula (X) is preferably a compound represented by the general formula (X-4).
- X 102 represents a fluorine atom or a hydrogen atom
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the above general formula (X-4) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence and the like Among them, it is preferable to combine two or more types from one type, and it is more preferable to combine three or more types from one type.
- the compound represented by the general formula (X-4) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-4-1).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (X-4-1) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 2% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less, further preferably 10% by mass or more and 15% by mass or less, and particularly preferably 10% by mass or more and 13% by mass or less. .
- the compound represented by the general formula (X-4-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (42.1) to the formula (42.4).
- the compound represented by the general formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-4-3).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (X-4-3) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 2% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less, further preferably 10% by mass or more and 15% by mass or less, and particularly preferably 10% by mass or more and 13% by mass or less. .
- the compound represented by the general formula (X-4-3) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (42.21) to the formula (42.24).
- the compound represented by the general formula (X) is preferably a compound represented by the general formula (X-5).
- X 102 represents a fluorine atom or a hydrogen atom
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the general formula (X-5) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence and the like Among them, it is preferable to combine two or more types from one type, and it is more preferable to combine three or more types from one type.
- the compound represented by the general formula (X-5) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-5-1).
- R 10 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compounds represented by the general formula (X-5-1) used in the liquid crystal composition of the present invention are specifically compounds represented by the formulas (43.1) to (43.4).
- the compound represented by the general formula (X) is preferably a compound selected from the group represented by the general formula (XI).
- X 111 to X 117 each independently represents a fluorine atom or a hydrogen atom, at least one of X 111 to X 117 represents a fluorine atom, R 110 represents an alkyl group having 1 to 5 carbon atoms, Represents an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and Y 11 represents a fluorine atom or —OCF 3 .
- the content of the compound represented by the general formula (XI) has an upper limit value and a lower limit value for each embodiment in consideration of properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. is there.
- the content of the compound is 2-30% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 4-30.
- the content of the compound is 5 to 30% by mass.
- the content of the compound is 7 to 30% by mass.
- the content of the compound is 5 to 30% by mass.
- the content is 9-30% by mass, and in still another embodiment, the content of the compound is 10-30% by mass, and in still another embodiment, the content of the compound is 12-30% by mass. In still another embodiment, the content of the compound is 13% to 30% by mass. In still another embodiment, the content of the compound is 15% to 30% by mass. In still another embodiment, the content of the compound is 18% to 30% by mass.
- the content of the compound is 2 to 30% by mass with respect to the total mass, and in another embodiment, the content of the compound is 2 to 25% by mass. In an embodiment of the present invention, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 15% by mass. In still another embodiment, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 5% by mass.
- the liquid crystal composition of the present invention When used for a liquid crystal display device having a small cell gap, it is suitable to increase the content of the compound represented by the general formula (XI). When used for a liquid crystal display element with a low driving voltage, it is suitable to increase the content of the compound represented by the general formula (XI). Further, when used for a liquid crystal display element used in a low temperature environment, it is suitable to reduce the content of the compound represented by the general formula (XI). In the case of a liquid crystal composition used for a liquid crystal display device having a high response speed, it is suitable to reduce the content of the compound represented by the general formula (XI).
- the compound represented by the general formula (XI) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (XI-1).
- R 110 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- a plurality of compounds represented by the general formula (XI-1) can be used.
- the compounds can be appropriately combined for each embodiment. For example, in one embodiment of the present invention, one type is combined, in another embodiment, two types, and in another embodiment, three or more types are combined.
- the content of the compound represented by the general formula (XI-1) is 1 with respect to the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably from 20% by mass to 20% by mass, more preferably from 3% by mass to 20% by mass, further preferably from 4% by mass to 20% by mass, further preferably from 6% by mass to 15% by mass, A mass% or more and 12 mass% or less is particularly preferable.
- the compound represented by the general formula (XI-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (45.1) to the formula (45.4). Among them, it is preferable to contain a compound represented by formula (45.2) to formula (45.4), and a compound represented by formula (45.2) and / or formula (45.3) It is more preferable to contain.
- the content of the compound represented by the formula (45.2) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like.
- the total mass is preferably 1% by mass or more and 30% by mass or less, more preferably 2% by mass or more and 20% by mass or less, further preferably 2% by mass or more and 10% by mass or less, and 2% by mass or more and 5% by mass or less. % Or less is particularly preferable.
- the content is, for example, 2% by mass to 4% by mass, 2% by mass to 3% by mass, 2% by mass to 2.5% by mass, 2.5% by mass to 5% by mass. % Or less, 3% to 5% by weight, 4% to 5% by weight, 4.5% to 5% by weight.
- the content of the compound represented by formula (45.3) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like.
- the total mass is preferably 1% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 20% by mass or less, still more preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 5% by mass. % Or less is particularly preferable.
- the total content thereof is that of the liquid crystal composition of the present invention. It is preferably 1% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 15% by mass or less, further preferably 3% by mass or more and 10% by mass or less, and more preferably 3% by mass or more and 7% by mass with respect to the total mass.
- the following are particularly preferred: In a particularly preferable range, the content may be 3 to 5% by mass or 6 to 7% by mass.
- the content of the compound represented by formula (45.4) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like.
- the total mass is preferably 1% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 15% by mass or less, further preferably 3% by mass or more and 10% by mass or less, and more preferably 3% by mass or more and 7% by mass. % Or less is particularly preferable.
- the total content is the total mass of the liquid crystal composition of the present invention. 1 mass% or more and 35 mass% or less is preferable, 5 mass% or more and 25 mass% or less are more preferable, and 10 mass% or more and 20 mass% or less are more preferable.
- the compound represented by the general formula (XI) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (XI-2).
- R 110 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- a plurality of compounds represented by the general formula (XI-2) can be used.
- the compounds can be appropriately combined for each embodiment. For example, in one embodiment of the present invention, one type is combined, in another embodiment, two types, and in another embodiment, three or more types are combined.
- the content of the compound represented by the general formula (XI-2) is 1 with respect to the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably from 20% by mass to 20% by mass, more preferably from 3% by mass to 20% by mass, further preferably from 4% by mass to 20% by mass, further preferably from 6% by mass to 15% by mass, A mass% or more and 12 mass% or less is particularly preferable.
- the compound represented by the general formula (XI-2) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (45.11) to the formula (45.14). Among them, it is preferable to contain a compound represented by formula (45.12) to formula (45.14), and it is more preferable to contain a compound represented by formula (45.12).
- the compound represented by the general formula (X) is preferably a compound selected from the group represented by the general formula (XII).
- X 121 to X 126 each independently represents a fluorine atom or a hydrogen atom
- R 120 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or 1 to 4 represents an alkoxy group
- Y 12 represents a fluorine atom or —OCF 3.
- the compound that can be combined is not particularly limited, but among the plurality of compounds represented by the general formula (XII) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like It is preferable to combine 1 type to 3 types or more, and it is more preferable to combine 1 type to 4 types or more.
- the compound represented by the general formula (XII) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (XII-1).
- R 120 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the general formula (XII-1) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like Among them, it is preferable to combine two or more types from one type, and it is more preferable to combine three or more types from one type.
- the content of the compound represented by the general formula (XII-1) is 1 with respect to the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably from 15% by weight to 15% by weight, more preferably from 2% by weight to 10% by weight, further preferably from 3% by weight to 8% by weight, and particularly preferably from 4% by weight to 6% by weight.
- the compound represented by the general formula (XII-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (46.1) to the formula (46.4). Among them, it is preferable to contain a compound represented by formula (46.2) to formula (46.4).
- the compound represented by the general formula (XII) is preferably a compound represented by the general formula (XII-2).
- R 120 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound that can be combined is not particularly limited, but a plurality of compounds represented by the general formula (XII-2) in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence and the like Among them, it is preferable to combine two or more types from one type, and it is more preferable to combine three or more types from one type.
- the content of the compound represented by the general formula (XII-2) is 1 with respect to the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably from 20% by mass to 20% by mass, more preferably from 3% by mass to 20% by mass, further preferably from 4% by mass to 17% by mass, further preferably from 6% by mass to 15% by mass, A mass% or more and 13 mass% or less is particularly preferable.
- the compound represented by the general formula (XII-2) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (47.1) to the formula (47.4). Among them, it is preferable to contain a compound represented by formula (47.2) to formula (47.4).
- the compound represented by the general formula (M) is preferably a compound selected from the group of compounds represented by the general formula (XIII).
- X 131 to X 135 each independently represent a fluorine atom or a hydrogen atom
- R 130 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or 1 to 4 represents an alkoxy group
- Y 13 represents a fluorine atom or —OCF 3.
- the content of the compound represented by the general formula (XIII) has an upper limit value and a lower limit value for each embodiment in consideration of properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. is there.
- the content of the compound is 2 to 30% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 4 to 30%. In still another embodiment, the content of the compound is 5 to 30% by mass. In still another embodiment, the content of the compound is 7 to 30% by mass. In still another embodiment, the content of the compound is 5 to 30% by mass. The content is 9-30% by mass, and in still another embodiment, the content of the compound is 11-30% by mass, and in still another embodiment, the content of the compound is 13-30% by mass. In still another embodiment, the content of the compound is 14% to 30% by mass. In still another embodiment, the content of the compound is 16% to 30% by mass. In still another embodiment, the content of the compound is 20% to 30% by mass.
- the content of the compound is 2 to 30% by mass with respect to the total mass, and in another embodiment, the content of the compound is 2 to 25% by mass. In an embodiment of the present invention, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 15% by mass. In still another embodiment, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 5% by mass.
- the liquid crystal composition of the present invention When used for a liquid crystal display device having a small cell gap, it is suitable to increase the content of the compound represented by the general formula (XIII). When used for a liquid crystal display element having a low driving voltage, it is suitable to increase the content of the compound represented by the general formula (XIII). In addition, when used for a liquid crystal display element used in a low temperature environment, it is suitable to reduce the content of the compound represented by the general formula (XIII). In the case of a liquid crystal composition used for a liquid crystal display device having a high response speed, it is suitable to reduce the content of the compound represented by the general formula (XIII).
- the compound represented by the general formula (XIII) is preferably a compound represented by the general formula (XIII-1).
- R 130 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (XIII-1) is preferably contained in an amount of 1% by mass to 25% by mass with respect to the total mass of the liquid crystal composition of the present invention, and preferably 3% by mass or more and 25% by mass or less. Is more preferable, 5 to 20% by mass is further preferable, and 10 to 15% by mass is particularly preferable.
- the compound represented by the general formula (XIII-1) is preferably a compound represented by the formula (48.1) to the formula (48.4), and is represented by the formula (48.2).
- a compound is preferred.
- the compound represented by the general formula (XIII) is preferably a compound represented by the general formula (XIII-2).
- R 130 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (XIII-2) is preferably contained in an amount of 5% by mass to 25% by mass and more preferably 6% by mass to 25% by mass with respect to the total mass of the liquid crystal composition of the present invention. Is more preferable, 8 to 20% by mass is further preferable, and 10 to 15% by mass is particularly preferable.
- the compound represented by the general formula (XIII-2) is preferably a compound represented by the formula (49.1) to the formula (49.4), and the formula (49.1) or the formula (49 .2) is preferred.
- the content of the compound represented by formula (49.2) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like.
- the total mass is preferably 1% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 15% by mass or less, further preferably 2% by mass or more and 10% by mass or less, and more preferably 3% by mass or more and 7% by mass. A mass% or less is particularly preferred.
- the compound represented by the general formula (XIII) is preferably a compound represented by the general formula (XIII-3).
- R 130 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the general formula (XIII-3) is preferably contained in an amount of 2% by mass to 20% by mass with respect to the total mass of the liquid crystal composition of the present invention, and is preferably contained in an amount of 4% by mass to 20% by mass. More preferably, it is more preferably 9% by mass or more and 17% by mass or less, and particularly preferably 11% by mass or more and 14% by mass or less.
- the compound represented by the general formula (XIII-3) is preferably a compound represented by the formula (50.1) to the formula (50.4), and the formula (50.1) or the formula (50 .2) is preferred.
- the compound represented by the general formula (M) is preferably a compound selected from the group of compounds represented by the general formula (XIV).
- R 140 represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkoxy group having 1 to 7 carbon atoms
- X 141 to X 144 are each independently Represents a fluorine atom or a hydrogen atom
- Y 14 represents a fluorine atom, a chlorine atom or —OCF 3
- Q 14 represents a single bond, —COO— or —CF 2 O—
- m 14 is 0 or 1.
- the content of the compound represented by the general formula (XIV) has an upper limit value and a lower limit value for each embodiment in consideration of properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. is there.
- the content of the compound is 3 to 40% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 7 to 40%. In still another embodiment, the content of the compound is 8 to 40% by mass. In still another embodiment, the content of the compound is 11 to 40% by mass. In still another embodiment, the content of the compound is The content is 12 to 40% by mass, and in still another embodiment, the content of the compound is 16 to 40% by mass, and in still another embodiment, the content of the compound is 18 to 40% by mass. In still another embodiment, the content of the compound is 19% to 40% by mass. In still another embodiment, the content of the compound is 22% to 40% by mass. In still another embodiment, the content of the compound is 25% to 40% by mass.
- the content of the compound is 3 to 40% by mass in another embodiment of the present invention, and in another embodiment, the content of the compound is 3 to 35% by mass. In an embodiment of the present invention, the content of the compound is 3 to 30% by mass. In still another embodiment, the content of the compound is 3 to 25% by mass. In still another embodiment, the content of the compound is 3 to 30% by mass. In still another embodiment, the content of the compound is 3 to 15% by mass.
- the liquid crystal composition of the present invention When used for a liquid crystal display element having a low driving voltage, it is suitable to increase the content of the compound represented by the general formula (XIV). In the case of a liquid crystal composition used for a liquid crystal display device having a high response speed, it is suitable to reduce the content of the compound represented by the general formula (XIV).
- the compound represented by the general formula (XIV-1) is preferably a compound represented by the general formula (XIV-1-2).
- R 140 represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkoxy group having 1 to 7 carbon atoms.
- the content of the compound represented by the general formula (XIV-1-2) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass to 15% by mass, more preferably 3% by mass to 13% by mass, further preferably 5% by mass to 11% by mass, and particularly preferably 7% by mass to 9% by mass. .
- the compound represented by the general formula (XIV-1-2) is specifically preferably a compound represented by the formula (52.1) to the formula (52.4), among which the formula (52. It is preferable to contain the compound represented by 4).
- the compound represented by the general formula (XIV) is preferably a compound represented by the general formula (XIV-2).
- R 140 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- X 141 to X 144 each independently represents fluorine.
- Y 14 represents a fluorine atom, a chlorine atom or —OCF 3.
- a plurality of compounds represented by the general formula (XIV-2) can be used.
- the compounds can be appropriately combined for each embodiment. For example, in one embodiment of the present invention, there is one. Furthermore, in another embodiment of this invention, they are two types. Or in another embodiment of this invention, they are three types. In still another embodiment of the present invention, there are four types. Or in another embodiment of this invention, they are five or more types.
- the content of the compound represented by the general formula (XIV-2) is an upper limit and a lower limit for each embodiment in consideration of properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. There is a value.
- the content of the compound is 3 to 40% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 7 to 40%. In still another embodiment, the content of the compound is 8 to 40% by mass. In still another embodiment, the content of the compound is 10 to 40% by mass. In still another embodiment, the content of the compound is The content is 11 to 40% by mass, and in still another embodiment, the content of the compound is 12 to 40% by mass, and in still another embodiment, the content of the compound is 18 to 40% by mass. In still another embodiment, the content of the compound is 19% to 40% by mass. In still another embodiment, the content of the compound is 21% to 40% by mass. In still another embodiment, the content of the compound is 22% to 40% by mass.
- the content of the compound is 3 to 40% by mass in another embodiment of the present invention, and in another embodiment, the content of the compound is 3 to 35% by mass. In an embodiment of the present invention, the content of the compound is 3 to 25% by mass. In still another embodiment, the content of the compound is 3 to 20% by mass. In still another embodiment, the content of the compound is 3 to In still another embodiment, the content of the compound is 3 to 10% by mass.
- the liquid crystal composition of the present invention When used for a liquid crystal display element having a low driving voltage, it is suitable to increase the content of the compound represented by the general formula (XIV-2). In the case of a liquid crystal composition used for a liquid crystal display device having a high response speed, it is suitable to reduce the content of the compound represented by the general formula (XIV-2).
- the compound represented by the general formula (XIV-2) is preferably a compound represented by the general formula (XIV-2-2).
- R 140 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XIV-2-2) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. 3 mass% or more and 20 mass% or less is preferable, 6 mass% or more and 17 mass% or less is more preferable, 9 mass% or more and 15 mass% or less is more preferable, and 12 mass% or more and 14 mass% or less is especially preferable. . *
- the compound represented by the general formula (XIV-2-2) is specifically preferably a compound represented by the formula (54.1) to the formula (54.4), among which the formula (54. It is preferable to contain the compound represented by 2) and / or Formula (54.4).
- the content of the compound represented by the formula (54.2) is preferably 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention. It is more preferably 1% by mass or less and 10% by mass or less, and further preferably 2% by mass or more and 8% by mass or less.
- the compound represented by the general formula (XIV-2) is preferably a compound represented by the general formula (XIV-2-3).
- R 140 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XIV-2-3) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 5% by mass or more and 30% by mass or less, more preferably 9% by mass or more and 27% by mass or less, further preferably 12% by mass or more and 24% by mass or less, and particularly preferably 12% by mass or more and 20% by mass or less. .
- the compound represented by the general formula (XIV-2-3) is specifically preferably a compound represented by the formula (55.1) to the formula (55.4), among which the formula (55. It is preferable to contain the compound represented by 2) and / or Formula (55.4).
- the compound represented by the general formula (XIV-2) is preferably a compound represented by the general formula (XIV-2-4).
- R 140 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XIV-2-4) is an upper limit for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. There is a lower limit.
- the content of the compound is 2 to 35% by mass relative to the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 5 to 35%. In still another embodiment, the content of the compound is 8 to 35% by mass. In still another embodiment, the content of the compound is 9 to 35% by mass. In still another embodiment, the content of the compound is In still another embodiment, the content of the compound is 18 to 35% by mass, and in still another embodiment, the content of the compound is 21 to 35% by mass. In still another embodiment, the content of the compound is 22% to 35% by mass. In still another embodiment, the content of the compound is 24% to 35% by mass.
- the content of the compound is 2 to 35% by mass, and in another embodiment, the content of the compound is 2 to 30% by mass, In another embodiment, the content of the compound is 2 to 25% by mass. In still another embodiment, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 2% by mass. In still another embodiment, the content of the compound is 2 to 10% by mass.
- liquid crystal composition of the present invention When used for a liquid crystal display device having a low driving voltage, it is suitable to increase the content of the compound represented by the general formula (XIV-2-4). In the case of a liquid crystal composition used for a liquid crystal display device having a high response speed, it is suitable to reduce the content of the compound represented by the general formula (XIV-2-4).
- the compound represented by the general formula (XIV-2-4) is specifically preferably a compound represented by the formula (56.1) to the formula (56.4), among which the formula (56. It is preferable to contain the compound represented by 1), Formula (56.2) and / or Formula (56.4).
- the compound represented by the general formula (XIV-2) is preferably a compound represented by the general formula (XIV-2-5).
- R 140 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XIV-2-5) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. 5 mass% or more and 25 mass% or less is preferable, 10 mass% or more and 22 mass% or less is more preferable, 13 mass% or more and 18 mass% or less are more preferable, and 13 mass% or more and 15 mass% or less are especially preferable. .
- the compound represented by the general formula (XIV-2-5) is specifically a compound represented by the formula (57.1) to the formula (57.4). Among these, it is preferable to contain a compound represented by the formula (57.1).
- the compound represented by the general formula (XIV-2) is preferably a compound represented by the general formula (XIV-2-6).
- R 140 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XIV-2-6) is based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 5% by mass or more and 25% by mass or less, more preferably 10% by mass or more and 22% by mass or less, further preferably 15% by mass or more and 20% by mass or less, and particularly preferably 15% by mass or more and 17% by mass or less. .
- the compound represented by the general formula (XIV-2-6) is specifically preferably a compound represented by the formula (58.1) to the formula (58.4), among which the formula (58. It is preferable to contain the compound represented by 2).
- the liquid crystal composition of the first embodiment of the present invention may contain any one or more of the compounds represented by the following general formula (X ′′), provided that the general formula (ii) And the compound represented by the general formula (L) are excluded.
- R X1 and R X2 each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or an alkenyl group having 2 to 10 carbon atoms.
- One methylene group or two or more methylene groups which are not adjacent to each other in the alkyl group, the alkoxy group and the alkenyl group may be substituted with —O— or —S—.
- One or two or more hydrogen atoms present in the alkyl group, the alkoxy group, and the alkenyl group may be substituted with a fluorine atom or a chlorine atom.
- u and v each independently represent 0, 1 or 2, but u + v is 2 or less.
- M X1 , M X2 and M X3 are independently of each other, (A) trans-1,4-cyclohexylene group (one methylene group present in this group or two or more methylene groups not adjacent to each other may be replaced by —O— or —S—) ), (B) 1,4-phenylene group (one —CH ⁇ present in this group or two or more non-adjacent —CH ⁇ may be replaced by —N ⁇ ) Represents a group selected from the group consisting of
- the hydrogen atom contained in said group (a) or group (b) may be respectively substituted with a cyano group, a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a chlorine atom.
- a plurality of M X2 and / or M X3 are present, they may be the same or different.
- L X1 , L X2 and L X3 are each independently a single bond, —COO—, —OCO—, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2.
- —, —CH 2 O—, —OCF 2 —, —CF 2 O—, —CH ⁇ CH— or —C ⁇ C— represents the same when a plurality of L X1 and / or L X3 are present. But it can be different.
- X X1 and X X2 each independently represent a trifluoromethyl group, a trifluoromethoxy group, or a fluorine atom, and any one of X X1 and X X2 represents a fluorine atom.
- R X1 when the ring structure to which R X1 is bonded is a phenyl group (aromatic), R X1 is a linear alkyl group having 1 to 5 carbon atoms, linear carbon when the ring structure is preferably .
- R X1 an alkenyl group of atoms having 1 to 4 (or more) alkoxy groups and the carbon atom number of 4 to 5 are attached cyclohexane, saturated ring structures, such as pyran and dioxane
- R X1 represents a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 (or more) carbon atoms, and a linear alkyl group having 2 to 5 carbon atoms.
- An alkenyl group is preferred.
- R X2 when the ring structure to which R X2 is bonded is a phenyl group (aromatic), R X2 is a linear alkyl group having 1 to 5 carbon atoms, linear carbon It is preferably an alkoxy group having 1 to 4 (or more) atoms and an alkenyl group having 4 to 5 carbon atoms, when the ring structure to which R X2 is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane.
- R X2 represents a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 (or more) carbon atoms, and a linear alkyl group having 2 to 5 carbon atoms.
- An alkenyl group is preferred.
- R X1 and / or R X2 are preferably alkenyl groups.
- R X1 and / or R X2 is preferably an alkyl group.
- the alkenyl group is preferably a structure represented by the following formulas (Alkenyl-1) to (Alkenyl-4). In each formula, each alkenyl group is bonded to the ring structure at the right end thereof.
- liquid crystal composition of the present invention contains a reactive monomer
- the structure represented by the formula (Alkenyl-2) and the formula (Alkenyl-4) is preferable, and the structure represented by the formula (Alkenyl-2) is more preferable. preferable.
- the compound represented by the general formula (X ′′) has a sulfur atom, a nitrogen atom, an ester group, a cyano group and a chlorine atom in the molecule when the chemical stability of the liquid crystal composition is required. Preferably not.
- the value of the dielectric anisotropy ⁇ of the liquid crystal composition is preferably ⁇ 2.0 to ⁇ 6.0 at 25 ° C. It is more preferably from 2.5 to ⁇ 5.0, and particularly preferably from ⁇ 2.5 to ⁇ 4.0. However, in more detail, when the response speed is important, ⁇ 2.5 to It is preferably ⁇ 3.4, and when the driving voltage is important, it is preferably ⁇ 3.4 to ⁇ 4.0.
- X ′′ the general formula (X ′′) depending on the desired performance such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence.
- one kind of compound is used, or in another embodiment of the present invention, there are two kinds of compounds.
- there are three types in another embodiment of the present invention, there are four types, in another embodiment of the present invention, there are five types, and in another embodiment of the present invention.
- 10 It is kind or more.
- the content of the compound represented by the general formula (X ′′) includes solubility at low temperature, transition temperature, electrical reliability, birefringence index, process suitability, drop mark, It is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.
- the lower limit of the preferable content is, for example, 1% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Alternatively, in another embodiment of the present invention, it is 10%. In another embodiment of the present invention, it is 20%. Furthermore, in another embodiment of this invention, it is 30%. Furthermore, in another embodiment of this invention, it is 40%. Furthermore, in another embodiment of this invention, it is 50%.
- it is 55%. Furthermore, in another embodiment of this invention, it is 60%. Furthermore, in another embodiment of the present invention it is 65%. Furthermore, in another embodiment of this invention, it is 70%. Furthermore, in another embodiment of the present invention, it is 75%. Furthermore, in another embodiment of this invention, it is 80%. Furthermore, a preferable upper limit of the content is, for example, 95% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. In another embodiment of the present invention, it is 85%. Furthermore, in another embodiment of the present invention, it is 75%. Furthermore, in another embodiment of the present invention it is 65%. Furthermore, in another embodiment of this invention, it is 55%. Furthermore, in another embodiment of the present invention, it is 45%. Furthermore, in another embodiment of the present invention, it is 35%. Furthermore, in another embodiment of this invention, it is 25%.
- the above lower limit value is high, and the above upper limit value is preferably high. Furthermore, when the liquid crystal composition of the present invention maintains a high Tni and a liquid crystal composition with good temperature stability is required, the above lower limit value is high and the above 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 lower limit value is low and the upper limit value is low.
- the value of the refractive index anisotropy ⁇ n of the liquid crystal composition containing the compound represented by the general formula (X ′′) is preferably 0.08 to 0.13 at 25 ° C., but from 0.09 More preferably, it is 0.12.More specifically, it is preferably 0.10 to 0.12 when corresponding to a thin cell gap, and 0.08 to 0.00 when corresponding to a thick cell gap. 10 is preferable.
- the rotational viscosity ( ⁇ 1) of the liquid crystal composition in the invention is preferably 150 or less, more preferably 130 or less, and particularly preferably 120 or less.
- the compound represented by the general formula (X ′′) is preferably a compound represented by the general formula (XI ′′).
- R X1 is the formula (X formula (XI)" represents the same meaning as R X1 in), M X1 has the same meaning as M X1 in the general formula (X '), R X2 of the general formula (X ") Represents the same meaning as R X2 .
- the lower limit of the preferable content is, for example, 1% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or 5% in another embodiment of the invention, or 10% in another embodiment of the invention, or 11% in another embodiment of the invention. 14% in another embodiment of the present invention, 15% in another embodiment of the present invention, 16% in another embodiment of the present invention, and 17% in another embodiment of the present invention. Furthermore, in another embodiment of the present invention is 18%, in another embodiment of the present invention is 19%, and in another embodiment of the present invention is 20%. In another embodiment of the present invention, it is 21%. In another embodiment of 22%.
- the upper limit of the preferable content is, for example, 50% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. In another embodiment of the present invention, it is 45%. Furthermore, in another embodiment of this invention, it is 40%. Furthermore, in another embodiment of the present invention, it is 35%. Furthermore, in another embodiment of this invention, it is 30%. Furthermore, in another embodiment of this invention, it is 25%. Furthermore, in another embodiment of this invention, it is 24%. Furthermore, in another embodiment of the present invention, it is 23%. Furthermore, in another embodiment of this invention, it is 22%. Furthermore, in another embodiment of the present invention it is 21%. Furthermore, in another embodiment of this invention, it is 20%.
- the compound represented by the general formula (XI ′′) is 5 to the total mass of the liquid crystal composition. It is preferably contained in an amount of ⁇ 35% by mass, more preferably 10-30% by mass, even more preferably 15-25% by mass, and particularly preferably 19-23% by mass.
- R X1 preferably represents an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, and more preferably represents an alkyl group having 1 to 8 carbon atoms.
- it represents an alkyl group having 3 to 5 carbon atoms, more preferably represents an alkyl group having 3 or 5 carbon atoms, is preferably linear, and is preferably linear. .
- R X2 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyloxy having 2 to 8 carbon atoms.
- an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms and an alkyl group having 3 to 5 carbon atoms or an alkoxy group having 2 to 4 carbon atoms.
- R X2 is preferably an alkenyl group, and when importance is placed on reliability such as voltage holding ratio, R X2 may be an alkyl group. preferable.
- the types of compounds that can be combined are represented by the general formula (XI ") depending on the desired performance such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence.
- XI general formula
- one kind of compound is used, or in another embodiment of the present invention, there are two kinds of compounds.
- there are three types in another embodiment of the present invention, there are four types, in another embodiment of the present invention, there are five types, and in another embodiment of the present invention.
- It is 0 or more.
- R X1 represents an alkyl group having 3 to 5 carbon atoms
- R X2 represents an alkoxy group having 2 to 4 carbon atoms. It is preferable to use a compound represented by the following formula (hereinafter sometimes referred to as compound ⁇ ).
- the content of the compound ⁇ is preferably 50% by mass or more, more preferably 70% by mass or more, based on the total mass of the plurality of compounds represented by the general formula (XI ′′). More preferably, it is 80 mass% or more.
- M X1 represents a 1,4-cyclohexylene group, a 1,4-phenylene group or a tetrahydropyran-2,5-diyl group.
- M X1 represents a 1,4-phenylene group
- One or more hydrogen atoms in the 1,4-phenylene group may be substituted with a fluorine atom, and M X1 is preferably a 1,4-cyclohexylene group or a 1,4-phenylene group.
- M X1 preferably represents a 1,4-phenylene group when the response speed is important.
- M X1 when it is important to widen the operating temperature range on the high temperature side (increase Tni), M X1 preferably represents a 1,4-cyclohexylene group.
- M X1 when placing importance on increasing Tni, when M X1 represents a 1,4-phenylene group, one or more hydrogen atoms in the benzene ring may be substituted with fluorine, Preferably 0 to 2 hydrogen atoms are substituted with fluorine atoms, more preferably 0 hydrogen atoms are substituted with fluorine atoms (which is an unsubstituted 1,4-phenylene group). . When two hydrogen atoms of the phenylene group are substituted with fluorine atoms, M X1 preferably represents a 2,3-difluoro-1,4-phenylene group.
- the compound represented by the general formula (XI ′′) is preferably a compound selected from the group represented by the following general formula (XI ′′ -1) and / or the general formula (XI ′′ -2).
- R X11 , R X21 , R X12 and R X22 each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms. Or an alkenyloxy group having 2 to 5 carbon atoms.
- R X21 , R X12 and R X22 are alkenyl groups
- the alkenyl group preferably has 4 to 5 carbon atoms.
- R X11 is preferably an alkyl group or an alkenyl group, and more preferably an alkyl group.
- R X21 and R X22 are preferably an alkyl group or an alkoxy group.
- R X12 is preferably an alkyl group or an alkenyl group, and more preferably an alkyl group.
- R X11 , R X21 , R X12 and R X22 are preferably an alkoxy group or an alkenyloxy group, and more preferably an alkoxy group.
- the compounds represented by the general formula (XI ′′) include the following formulas (XI ′′ -1-1) to (XI ′′ -1-8) and formulas (XI ′′ -2-1) to formulas (XI).
- the compound represented by “-2-4) is preferred.
- the formulas (XI ′′ -1-1) and (XI ′′ -1-3) ) Is most preferred.
- the refractive index anisotropy ⁇ n required for the liquid crystal composition of the present invention is relatively high (approximately 0.100 or more), the compound represented by the formula (XI ′′ -2-1) is most preferable.
- the content of the compound represented by the formula (XI ′′ -1-1) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 3% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 18% by mass or less, and 7% by mass or more and 15% by mass or less with respect to the total mass of the liquid crystal composition. Is more preferably 9% by mass or more and 13% by mass or less.
- the content of the compound represented by the formula (XI ′′ -2-1) is determined in consideration of solubility at low temperature, transition temperature, electrical reliability, and the like. It is preferably 3% by mass or more and 30% by mass or less, more preferably 4% by mass or more and 18% by mass or less, and more preferably 5% by mass or more and 15% by mass or less with respect to the total mass of the liquid crystal composition. Is more preferable, and it is particularly preferably 7% by mass or more and 13% by mass or less.
- the total of these two kinds of compounds is preferably 10% by mass or more and 30% by mass or less, more preferably 15% by mass or more and 25% by mass or less, and more preferably 19% by mass or more and 23% by mass with respect to the total mass of the liquid crystal composition. % Or less is more preferable.
- the compounds represented by the general formula (XI ′′) are specifically represented by the following formulas (XI ′′ -1-10) to (XI ′′- 1-13) and a compound selected from the group represented by formulas (XI ′′ -2-10) to (XI ′′ -2-11) are preferable.
- R X22 represents the same meaning as R X22 in formula (XI ′′ -2).
- the compound represented by the general formula (X ′′) is preferably a compound represented by the general formula (XII ′′).
- R X1 is the formula (X formula (XII)" represents the same meaning as R X1 in)
- M X2 represent the same meaning as M X2 in the general formula (X ')
- R X2 of the general formula (X ") Represents the same meaning as R X2 .
- the lower limit of the preferable content is, for example, 1% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or 5% in another embodiment of the invention, or 10% in another embodiment of the invention, or 11% in another embodiment of the invention. 15% in another embodiment of the present invention, 18% in another embodiment of the present invention, 19% in another embodiment of the present invention, and 20% in another embodiment of the present invention. Furthermore, in another embodiment of the present invention it is 23%, in another embodiment of the present invention it is 25%, and in another embodiment of the present invention it is 26%. In another embodiment of the present invention, 27%. In another embodiment of the light is 28%.
- the upper limit of the preferable content is, for example, 50% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. In another embodiment of the present invention, it is 45%. Furthermore, in another embodiment of the present invention, it is 43%. Furthermore, in another embodiment of the present invention, it is 42%. Furthermore, in another embodiment of the present invention it is 41%. Furthermore, in another embodiment of this invention, it is 40%. Furthermore, in another embodiment of this invention, it is 39%. Furthermore, in another embodiment of this invention, it is 38%. Furthermore, in another embodiment of the present invention, it is 35%. Furthermore, in another embodiment of this invention, it is 33%. Furthermore, in another embodiment of this invention, it is 30%.
- R X1 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyloxy having 2 to 8 carbon atoms.
- an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms more preferably an alkyl group having 1 to 8 carbon atoms, More preferably, it represents an alkyl group having 2 to 5, more preferably an alkyl group having 3 to 5 carbon atoms, and the alkyl group and alkenyl group are preferably linear.
- R X2 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyloxy having 2 to 8 carbon atoms.
- R X2 preferably represents an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms, and an alkyl group having 1 to 5 carbon atoms.
- it is more preferably an alkoxy group having 1 to 4 carbon atoms, further preferably an alkoxy group having 1 to 4 carbon atoms, and particularly preferably an alkoxy group having 2 or 3 carbon atoms.
- the group is preferably a straight chain.
- R X2 is preferably an alkenyl group when importance is placed on improving the response speed of the liquid crystal display element of the present invention, and R X2 is an alkyl group when importance is placed on reliability such as voltage holding ratio. Is preferred.
- the compound represented by general formula (XII ′′) is more preferably a compound represented by general formula (XII ′′ -1) or general formula (XII ′′ -2).
- R X1 is "the same meaning as R X1 in
- R X2 of the general formula (X general formula (X) represents the same meaning as R X2 in).
- the compound represented by the general formula (XII "-1) is preferably a compound represented by the following formulas (XII" -1-1) to (XII "-1-6).
- the content of the compound represented by the formula (XI ′′ -1-2) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like. It is preferably 1% by mass to 30% by mass with respect to the total mass of the liquid crystal composition, It is more preferably 5% by mass or more and 20% by mass or less, further preferably 8% by mass or more and 18% by mass or less, and particularly preferably 10% by mass or more and 15% by mass or less.
- the compounds represented by the general formula (XII ′′ -2) are preferably compounds represented by the following formulas (XII ′′ -2-1) to (XII ′′ -2-6).
- the content of the compound represented by the formula (XII ′′ -2-1) is determined in consideration of the solubility at low temperatures, the transition temperature, the electrical reliability, and the like. It is preferably 1% by mass to 30% by mass, more preferably 1% by mass to 20% by mass, and more preferably 1% by mass to 15% by mass with respect to the total mass of the liquid crystal composition. Is more preferable, and 3% by mass or more and 9% by mass or less is particularly preferable.
- the compound represented by the general formula (XII ′′ -2) has an alkenyl group
- the compound represented by the general formula (XII ′′ -2) is specifically the following formula (XII ′′ -2-10) ) To (XII ′′ -2-13) are preferred.
- R X2 represent the same meaning as R X2 in the general formula (X ").
- the general formula (XII "-2) The compounds represented are used in appropriate combinations, for example, one kind of compound is used as one embodiment of the present invention, or two kinds are used in another embodiment of the present invention. In another embodiment of the invention, there are three types, and in another embodiment of the present invention, there are four types, and in another embodiment of the present invention, there are five types. In another embodiment of the present invention, there are 7 types, in another embodiment of the present invention, there are 8 types, and in another embodiment of the present invention, there are 9 types. In addition, another embodiment of the present invention. In is more than 10 kinds.
- the compounds represented by the formulas (XII ′′ -2-1) to (XII ′′ -2-4) are used in combination.
- the content of the compound represented by the formula (XII ′′ -2-1) to the formula (XII ′′ -2-4) is based on the total mass of the compound represented by the general formula (XII ′′) It is preferably 50% by mass or more, more preferably 70% by mass or more, and further preferably 80% by mass or more.
- the compounds represented by the formulas (XII ′′ -2-1) to (XII ′′ -2-3) should be used in combination.
- the content of the compound represented by the formula (XII ′′ -2-1) to the formula (XII ′′ -2-3) is 50 to the total mass of the compound represented by the general formula (XII ′′). It is preferably at least mass%, more preferably at least 70 mass%, and even more preferably at least 80 mass%.
- the compounds represented by the formula (XII ′′ -2-1) and the formula (XII ′′ -2-3) should be used in combination.
- the content of the compound represented by the formula (XII ′′ -2-1) and the formula (XII ′′ -2-3) is 50% relative to the total mass of the compound represented by the general formula (XII ′′). It is preferably at least mass%, more preferably at least 70 mass%, and even more preferably at least 80 mass%.
- R X1 is the formula (X formula (XIII)" represents the same meaning as R X1 in)
- M X31 has the same meaning as M X1 in the general formula (X ')
- R X2 of the general formula (X ”) Represents the same meaning as R X2
- W represents 0 or 1
- X 31 to X 36 represent a hydrogen atom or a fluorine atom, a combination of X 31 and X 32, a combination of X 33 and X 34 , the combination of X 35 and X 36, at least one set of combinations of are both fluorine atoms.
- the types of compounds that can be combined are represented by the general formula (XIII ′′) depending on the desired performance such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence.
- one kind of compound is used, or in another embodiment of the present invention, there are two kinds of compounds.
- there are three types in another embodiment of the present invention, there are four types, in another embodiment of the present invention, there are five types, and in another embodiment of the present invention.
- another embodiment of the present invention Is more than 10 kinds.
- the preferable lower limit value of the content is, for example, 1% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or 5% in another embodiment of the invention, or 10% in another embodiment of the invention, or 11% in another embodiment of the invention. 14% in another embodiment, 20% in another embodiment of the invention, 30% in another embodiment of the invention, and 40% in another embodiment of the invention. Furthermore, in another embodiment of the present invention it is 50%, in another embodiment of the present invention it is 55%, and in another embodiment of the present invention it is 60%. In another embodiment of the present invention, it is 65%. In another embodiment of the invention is 70%. Further, in another embodiment of the present invention is 75%.
- a preferable upper limit of the content is, for example, 95% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention.
- it is 85%.
- it is 75%.
- it is 65%.
- it is 55%.
- it is 45%.
- it is 35%.
- it is 30%.
- it is 28%.
- it is 27%.
- the compound represented by the general formula (XIII ′′) is contained, it is preferably contained in an amount of 0 to 30% by mass and preferably 0 to 25% by mass with respect to the total mass of the liquid crystal composition of the present invention. Is more preferable.
- R X1 and R X2 each independently represent an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or carbon It preferably represents an alkenyloxy group having 2 to 8 atoms, more preferably an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, and an alkyl group having 1 to 8 carbon atoms. And more preferably an alkyl group having 2 to 5 carbon atoms, and most preferably an alkyl group having 3 to 5 carbon atoms, wherein R X1 and R X2 are carbon atoms.
- the numbers are preferably different from each other, and the alkyl group, alkenyl group, alkoxy group and alkenyloxy group are preferably linear. More specifically, the compound represented by the general formula (XIII ′′) is a compound in which R X1 represents a propyl group and R X2 represents an ethyl group, or R X1 represents a butyl group and R X2 represents an ethyl group. Compounds are preferred.
- X 31 to X 36 each independently preferably represents a hydrogen atom or a fluorine atom, more preferably 2 to 5 of X 31 to X 36 represent a fluorine atom, more preferably 2 to 4 of X 31 ⁇ X 36 represents a fluorine atom, particularly preferably represents a two to three fluorine atoms of X 31 ⁇ X 36, 2 of X 31 ⁇ X 36 Most preferably, each represents a fluorine atom.
- any two of X 33 to X 36 preferably represent a fluorine atom, and the combination of X 33 and X 34 both represents a fluorine atom, or X 35 and X 36 It is preferable that both of the combinations represent a fluorine atom, and it is more preferable that both of the combinations of X 33 and X 34 represent a fluorine atom.
- both of the combinations represent a fluorine atom.
- M X31 preferably represents a 1,4-cyclohexylene group, a 1,4-phenylene group or a tetrahydropyran-2,5-diyl group.
- M X31 is a 1,4-phenylene group or tetrahydropyran-2,5-diyl. It preferably represents a group, and more preferably represents a 1,4-phenylene group.
- M X31 when importance is attached to the driving voltage, M X31 preferably represents a 1,4-phenylene group or a tetrahydropyran-2,5-diyl group, and tetrahydropyran-2,5 More preferably it represents a diyl group.
- M X31 when the operating temperature range is important, that is, when a high operating temperature range is required (when Tni is increased), M X31 is 1, 4 in the liquid crystal display element and the liquid crystal display.
- M X31 represents a 1,4-phenylene group
- one or more hydrogen atoms in the benzene ring may be substituted with fluorine atoms, but 0 to 2 hydrogen atoms are substituted with fluorine atoms. It is preferable that When two hydrogen atoms of the phenylene group are substituted with fluorine atoms, M X31 preferably represents a 2,3-difluorobenzene-1,4-diyl group.
- W represents 0 or 1.
- W when importance is attached to the response speed, W preferably represents 0.
- the compound represented by the general formula (XIII ′′) is preferably a compound represented by the following general formula (XIII ′′ -1) to (XIII ′′ -23).
- R X1 represents the general formula (X ′′).
- R X2 represent the same meaning as R X2 in the general formula (X ").
- the general formulas (XIII ′′ -1) to (XIII ′′ -23) are preferred, and the compounds represented by the general formulas (XIII ′′ -1), (XIII ′′ -2), (XIII ′′ -10), (XIII ′′ -12), (XIII ′′ ⁇ 20) and (XIII ′′ -22) are more preferable, compounds represented by the general formulas (XIII ′′ -1) and (XIII ′′ -2) are more preferable, and the general formula (XIII ′′ -1). ) Is particularly preferred.
- the compound represented by the general formula (XIII ′′ -1) is preferably a compound represented by the formula (XIII ′′ -1-1) to the formula (XIII ′′ -1-16).
- the content of the compound represented by the formula (XIII ′′ -1-2) is determined in consideration of solubility at a low temperature, transition temperature, electrical reliability, and the like. It is preferably 1% by mass to 30% by mass, more preferably 1% by mass to 20% by mass, and more preferably 1% by mass to 10% by mass with respect to the total mass of the liquid crystal composition. Is more preferable, and 2% by mass or more and 8% by mass or less is particularly preferable.
- the value of ⁇ is preferably ⁇ 2.0 to ⁇ 6.0 at 25 ° C., and ⁇ 2.5 To ⁇ 5.0 is more preferable, and ⁇ 2.5 to ⁇ 4.0 is particularly preferable. More specifically, it is preferably ⁇ 2.5 to ⁇ 3.4 when the response speed is important, and is preferably ⁇ 3.4 to ⁇ 4.0 when the drive voltage is important. .
- the value of the refractive index anisotropy ⁇ n of the liquid crystal composition according to the present invention is preferably 0.08 to 0.13 at 295 K, more preferably 0.08 to 0.105. More specifically, when it corresponds to a thin cell gap, it is preferably 0.10 to 0.12, and when it corresponds to a thick cell gap, it is preferably 0.08 to 0.10.
- the rotational viscosity ( ⁇ 1) (unit: mPa ⁇ s) of the liquid crystal composition according to the present invention is preferably 150 or less, more preferably 130 or less, and particularly preferably 120 or less at 295K.
- the compound used in the present invention preferably has no chlorine atom in the molecule when the chemical stability of the liquid crystal composition is required. Further, the compound having a chlorine atom in the liquid crystal composition is preferably 5% or less, preferably 3% or less, preferably 1% or less, and preferably 0.5% or less. Most preferably, it is not substantially contained.
- “substantially does not contain” means that only a compound containing a chlorine atom unintentionally may be mixed in the liquid crystal composition, such as a compound generated as an impurity during compound production. .
- the compound used in the present invention does not have a peracid (—CO—OO—) structure in the molecule. Moreover, when importance is attached to the reliability and long-term stability of the liquid crystal composition, it is preferable not to use a compound having a cyano group or a carbonyl group. In addition, when importance is attached to stability by UV irradiation, it is desirable not to use a compound in which a chlorine atom is substituted. It is also preferable that only the compounds in which all the ring structures in the molecule are 6-membered rings.
- the liquid crystal 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% by mass or less with respect to the total mass of the composition, and 3% by mass or less. More preferably, it is more preferable to set it as 1 mass% or less, and it is most preferable not to contain substantially.
- the content of the compound substituted with chlorine atoms is preferably 15% by mass or less, more preferably 10% by mass or less, based on the total mass of the composition.
- the content of a compound in which all the ring structures in the molecule are 6-membered rings is 80 It is preferably at least mass%, more preferably at least 90 mass%, even more preferably at least 95 mass%, and the liquid crystal is composed only of a compound having substantially all 6-membered ring structures in the molecule. Most preferably it constitutes a composition.
- the content of the compound having a cyclohexenylene group as a ring structure is determined based on the total mass of the composition.
- the content is preferably 10% by mass or less, more preferably 5% by mass or less, and still more preferably substantially 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% by mass or less, and preferably 5% by mass or less based on the total mass of the composition. Is more preferable, and it is still more preferable not to contain substantially.
- 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 liquid crystal 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 (XX)
- X 201 and X 202 each independently represent a hydrogen atom or a methyl group
- Sp 201 and Sp 202 are each independently a single bond, an alkylene group having 1 to 8 carbon atoms, or —O— (CH 2 ) s — (wherein s represents an integer of 2 to 7, Represents an aromatic ring).
- X 201 and X 202 are each preferably a diacrylate derivative that represents a hydrogen atom, or a dimethacrylate derivative that has a methyl group, and a compound in which one represents a hydrogen atom and the other represents a methyl group.
- diacrylate derivatives are the fastest, dimethacrylate derivatives are slow, asymmetric compounds are in the middle, and a preferred embodiment can be used depending on the application.
- a dimethacrylate derivative is particularly preferable.
- Sp 201 and Sp 202 each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms, or —O— (CH 2 ) s —, but at least one of them is a single bond in a PSA display element.
- a compound in which both represent a single bond or one in which one represents a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or —O— (CH 2 ) s — is preferable.
- 1 to 4 alkyl groups are preferable, and s is preferably 1 to 4.
- Z 201 represents —OCH 2 —, —CH 2 O—, —COO—, —OCO—, —CF 2 O—, —OCF 2 —, —CH 2 CH 2 —, —CF 2 CF 2 — or a single bond
- —COO—, —OCO— or a single bond is more preferred, and a single bond is particularly preferred.
- M 201 represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which any hydrogen atom may be substituted by a fluorine atom, but the 1,4-phenylene group or the single bond is preferable.
- Z 201 is preferably a linking group other than a single bond, and when M 201 is a single bond, Z 201 is preferably a single bond.
- the ring structure between Sp 201 and Sp 202 is specifically preferably the structure described below.
- Polymerizable compounds containing these skeletons are optimal for PSA-type liquid crystal display elements because of their ability to regulate alignment after polymerization, and display alignment is suppressed, or display unevenness is suppressed or does not occur at all.
- general formula (XX-1) to general formula (XX-4) are particularly preferable, and among them, general formula (XX-2) is most preferable.
- Sp 20 represents an alkylene group having 2 to 5 carbon atoms.
- the polymerization proceeds even when no polymerization initiator is present, but may contain a polymerization initiator in order to promote the polymerization.
- the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzyl ketals, acylphosphine oxides, and the like.
- the liquid crystal composition containing the polymerizable compound of the present invention is provided with liquid crystal alignment ability by polymerizing the polymerizable compound contained therein by ultraviolet irradiation, and transmits light through the birefringence of the liquid crystal composition.
- liquid crystal display element that controls As liquid crystal display elements, ECB-LCD, VA-LCD, FFS-LCD, AM-LCD (active matrix liquid crystal display element), TN (nematic liquid crystal display element), STN-LCD (super twisted nematic liquid crystal display element), OCB- It is useful for LCDs and IPS-LCDs (in-plane switching liquid crystal display elements), but is particularly useful for AM-LCDs and can be used for transmissive or reflective liquid crystal display elements.
- 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 or a thin film diode 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 of sandwiching the polymerizable compound-containing liquid crystal composition between the two substrates.
- a vacuum injection method there is a problem that an injection mark remains instead of a drop mark.
- it can use more suitably for the display element manufactured using ODF method.
- a sealant such as epoxy photothermal curing is drawn on a backplane or frontplane 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 liquid crystal composition in the air.
- the liquid crystal composition of the present invention can be preferably used because the liquid crystal 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 performed in a state where the polymerizable compound-containing liquid crystal composition is sandwiched between two substrates, at least the substrate on the irradiation surface side must be given appropriate transparency to the active energy rays. I must.
- 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 liquid crystal composition.
- the alternating electric field to be applied is preferably an alternating current having a frequency of 10 Hz to 10 kHz, more preferably a frequency of 60 Hz to 10 kHz, and the voltage is selected depending on a desired pretilt angle of the liquid crystal display element.
- 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 during irradiation is preferably within a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. Polymerization is preferably performed at a temperature close to room temperature, that is, typically 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-rays to irradiate it is preferable to irradiate the ultraviolet-ray of the wavelength range which is not the absorption wavelength range of a liquid crystal composition, and it is preferable to cut and use an ultraviolet-ray as needed.
- Intensity of ultraviolet irradiation is preferably from 0.1mW / cm 2 ⁇ 100W / cm 2, 2mW / cm 2 ⁇ 50W / cm 2 is more preferable.
- 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 irradiated ultraviolet rays, but is preferably from 10 seconds to 3600 seconds, and more preferably from 10 seconds to 600 seconds.
- the liquid crystal display device using the liquid crystal 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, including VA mode, PSVA mode, It can be applied to liquid crystal display elements for PSA mode, IPS (in-plane switching) mode, FSS (fringe field switching) mode, VA-IPS mode or ECB mode.
- liquid crystal display device liquid crystal display
- liquid crystal display element As an example of a liquid crystal display element, there is a liquid crystal display element comprising two substrates facing each other, a sealing material provided between the substrates, and a liquid crystal sealed in a sealing region surrounded by the sealing material Can be mentioned.
- a TFT layer and a pixel electrode are provided on the first substrate, a backplane provided with a passivation film and a first alignment film thereon, and a black matrix, a color filter, and a flattening on the second substrate.
- a film (overcoat layer), a transparent electrode, a second alignment film provided thereon, a front plane opposed to the back plane, a sealing material provided between the substrates, and the sealing material And a liquid crystal layer sealed in a sealed region, and a specific aspect of a liquid crystal display element in which protrusions (columnar spacers) are provided on a substrate surface in contact with the sealing material.
- the first substrate or the second substrate is not particularly limited as long as it is substantially transparent, and glass, ceramics, plastics, or the like can be used.
- Plastic substrates include cellulose derivatives such as cellulose, triacetyl cellulose, diacetyl cellulose, polycycloolefin derivatives, polyesters such as polyethylene terephthalate and polyethylene naphthalate, polypropylene, polyethylene, etc.
- Inorganic-organic composite materials such as glass fiber-acrylic resin can be used.
- the function of the barrier film is to reduce the moisture permeability of the plastic substrate and to improve the reliability of the electrical characteristics of the liquid crystal display element.
- the barrier film is not particularly limited as long as it has high transparency and low water vapor permeability. Generally, vapor deposition, sputtering, chemical vapor deposition method (CVD method) using an inorganic material such as silicon oxide is used. ) Is used.
- the same material or different materials may be used as the first substrate or the second substrate, and there is no particular limitation.
- Use of a glass substrate is preferable because a liquid crystal display element having excellent heat resistance and dimensional stability can be produced.
- a plastic substrate is preferable because it is suitable for a manufacturing method using a roll-to-roll method and is suitable for weight reduction or flexibility. For the purpose of imparting flatness and heat resistance, good results can be obtained by combining a plastic substrate and a glass substrate.
- a substrate is used as the material of the first substrate or the second substrate.
- a TFT layer and a pixel electrode are provided on the first substrate. These are manufactured by a normal array process.
- a backplane is obtained by providing a passivation film and a first alignment film thereon.
- a passivation film (also referred to as an inorganic protective film) is a film for protecting the TFT layer.
- a nitride film (SiNx), an oxide film (SiOx), or the like is formed by a chemical vapor deposition (CVD) technique or the like.
- the first alignment film is a film having a function of aligning liquid crystals, and a polymer material such as polyimide is usually used in many cases.
- a coating solution an alignment agent solution composed of a polymer material and a solvent is used. Since the alignment film may hinder the adhesive force with the sealing material, a pattern is applied in the sealing region.
- a printing method such as a flexographic printing method or a droplet discharge method such as an ink jet is used.
- the applied alignment agent solution is crosslinked and cured by baking after the solvent is evaporated by temporary drying. Thereafter, an alignment process is performed to provide an alignment function.
- Alignment treatment is usually performed by a rubbing method.
- the polymer film formed as described above is rubbed in one direction using a rubbing cloth made of fibers such as rayon, thereby producing liquid crystal alignment ability.
- a photo-alignment method is a method of generating alignment ability by irradiating polarized light on an alignment film containing an organic material having photosensitivity, and does not cause the generation of scratches or dust on the substrate due to the rubbing method.
- the organic material in the photo-alignment method include a material containing a dichroic dye.
- Dichroic dyes include molecular orientation induction or isomerization reaction (eg, azobenzene group), dimerization reaction (eg, cinnamoyl group), photocrosslinking reaction (eg, benzophenone group) due to Weigert effect resulting from photodichroism.
- a photo-alignment group that causes a photoreaction that causes liquid crystal alignment ability
- a photolysis reaction eg, polyimide group
- the applied alignment agent solution is irradiated with light having an arbitrary deflection (polarized light), whereby an alignment film having alignment ability in an arbitrary direction can be obtained.
- One front plane is provided with a black matrix, a color filter, a planarization film, a transparent electrode, and a second alignment film on a second substrate.
- the black matrix is produced by, for example, a pigment dispersion method. Specifically, a color resin solution in which a black colorant is uniformly dispersed for forming a black matrix is applied on a second substrate provided with a barrier film, thereby forming a colored layer. Subsequently, the colored layer is baked and cured. A photoresist is applied on this and prebaked. After exposing the photoresist through a mask pattern, development is performed to pattern the colored layer. Thereafter, the photoresist layer is peeled off, and the colored layer is baked to complete the black matrix.
- a pigment dispersion method Specifically, a color resin solution in which a black colorant is uniformly dispersed for forming a black matrix is applied on a second substrate provided with a barrier film, thereby forming a colored layer. Subsequently, the colored layer is baked and cured. A photoresist is applied on this and prebaked. After exposing the photoresist through a mask pattern, development is performed
- a photoresist type pigment dispersion may be used.
- a photoresist-type pigment dispersion is applied, pre-baked, exposed through a mask pattern, and then developed to pattern the colored layer. Thereafter, the photoresist layer is peeled off, and the colored layer is baked to complete the black matrix.
- the color filter is created by the pigment dispersion method, electrodeposition method, printing method or dyeing method.
- a color resin solution in which a pigment (for example, red) is uniformly dispersed is applied onto the second substrate, and after baking and curing, a photoresist is applied thereon and prebaked. After the photoresist is exposed through a mask pattern, development is performed and patterning is performed. Thereafter, the photoresist layer is peeled off and baked again to complete a (red) color filter.
- a green color filter and a blue color filter are formed.
- the transparent electrode is provided on the color filter (if necessary, an overcoat layer is provided on the color filter for surface flattening).
- the transparent electrode preferably has a high transmittance and preferably has a low electrical resistance.
- the transparent electrode is formed by sputtering an oxide film such as ITO.
- a passivation film may be provided on the transparent electrode for the purpose of protecting the transparent electrode.
- the second alignment film is the same as the first alignment film described above.
- the shape of the columnar spacer is not particularly limited, and the horizontal cross section can be various shapes such as a circle and a polygon such as a quadrangle. A polygonal shape is particularly preferable.
- the protrusion shape is preferably a truncated cone or a truncated pyramid.
- the material of the columnar spacer is not particularly limited as long as it is a sealing material, an organic solvent used for the sealing material, or a material that does not dissolve in liquid crystal, but it may be a synthetic resin (curable resin) in terms of processing and weight reduction. preferable.
- the protrusion can be provided on the surface of the first substrate in contact with the sealing material by a photolithography method or a droplet discharge method. For these reasons, it is preferable to use a photocurable resin suitable for a photolithography method or a droplet discharge method.
- a resin solution for forming columnar spacers (not containing a colorant) is applied on the transparent electrode of the front plane. Subsequently, the resin layer is baked and cured. A photoresist is applied on this and prebaked. After exposing the photoresist through a mask pattern, development is performed to pattern the resin layer. Thereafter, the photoresist layer is peeled off, and the resin layer is baked to complete the columnar spacer.
- the formation position of the columnar spacer can be determined at a desired position by the mask pattern. Therefore, both the inside of the sealing region of the liquid crystal display element and the outside of the sealing region (sealing material application portion) can be created at the same time.
- the columnar spacer is preferably formed so as to be positioned on the black matrix so that the quality of the sealing region does not deteriorate. Such columnar spacers produced by photolithography are sometimes referred to as column spacers or photospacers.
- a mixture of a negative water-soluble resin such as PVA-stilbazo photosensitive resin, a polyfunctional acrylic monomer, an acrylic acid copolymer, and a triazole initiator is used.
- a color resin in which a colorant is dispersed in a polyimide resin there is no particular limitation, and a spacer can be obtained from a known material in accordance with the compatibility with the liquid crystal or the sealing material to be used.
- the sealing material is applied to the surface of the backplane that contacts the sealing material.
- the material of the sealing material is not particularly limited, and a curable resin composition in which a polymerization initiator is added to an epoxy or acrylic photocurable, thermosetting, or photothermal combination curable resin is used.
- a curable resin composition in which a polymerization initiator is added to an epoxy or acrylic photocurable, thermosetting, or photothermal combination curable resin is used.
- fillers made of inorganic or organic substances may be added.
- the shape of these fillers is not particularly limited, and includes a spherical shape, a fiber shape, and an amorphous shape.
- a spherical or fibrous gap material having a monodispersed diameter is mixed, or in order to further strengthen the adhesive force with the substrate, a fibrous substance that easily entangles with the protrusion on the substrate is used. You may mix.
- the diameter of the fibrous material used at this time is preferably about 1/5 to 1/10 or less of the cell gap, and the length of the fibrous material is preferably shorter than the seal coating width.
- the material of the fibrous substance is not particularly limited as long as a predetermined shape can be obtained, and synthetic fibers such as cellulose, polyamide, and polyester, and inorganic materials such as glass and carbon can be appropriately selected.
- the sealing material As a method for applying the sealing material, there are a printing method and a dispensing method, but a dispensing method with a small amount of the sealing material used is desirable.
- the application position of the sealing material is usually on the black matrix so as not to adversely affect the sealing area.
- the sealing material application shape is a closed loop shape.
- the liquid crystal is dropped on the closed loop shape (sealing region) of the front plane coated with the sealing material.
- a dispenser is used. Since the amount of liquid crystal to be dropped coincides with the volume of the liquid crystal cell, the amount is basically the same as the volume obtained by multiplying the height of the column spacer and the seal application area. However, in order to optimize liquid crystal leakage and display characteristics in the cell bonding process, the amount of liquid crystal to be dropped may be adjusted as appropriate, or the liquid crystal dropping position may be dispersed.
- the back plane is bonded to the front plane where the sealing material is applied and the liquid crystal is dropped.
- the front plane and the back plane are adsorbed on a stage having a mechanism for adsorbing a substrate such as an electrostatic chuck, and the second alignment film on the front plane and the first alignment film on the back plane face each other.
- it is arranged at a position (distance) where the sealing material does not contact the other substrate.
- the system is depressurized. After decompression is completed, the positions of both substrates are adjusted while confirming the bonding position between the front plane and the back plane (alignment operation).
- the substrate is brought close to a position where the sealing material on the front plane and the back plane are in contact with each other.
- the system is filled with an inert gas, and the pressure is gradually returned to normal pressure while releasing the reduced pressure.
- the front plane and the back plane are bonded together by atmospheric pressure, and a cell gap is formed at the height of the columnar spacer.
- the sealing material is irradiated with ultraviolet rays to cure the sealing material, thereby forming a liquid crystal cell.
- a heating step is added in some cases to promote curing of the sealing material. A heating process is often added to enhance the adhesive strength of the sealing material and improve the reliability of electrical characteristics.
- the measured characteristics are as follows.
- Tni Nematic phase-isotropic liquid phase transition temperature (° C)
- ⁇ n Refractive index anisotropy at 295K (also known as birefringence)
- ⁇ Dielectric anisotropy at 295K
- Initial voltage holding ratio (initial VHR): Voltage holding ratio (%) at 50 ° C. under conditions of frequency 60 Hz and applied voltage 4 V Voltage holding ratio after heating (VHR after heating): voltage holding ratio (%) measured under the same conditions as the initial VHR after holding in an atmosphere of 150 ° C. for 1 hour
- the burn-in evaluation of the liquid crystal display element is based on the following four-step evaluation of the afterimage level of the fixed pattern when the predetermined fixed pattern is displayed in the display area for 1440 hours and then the entire screen is displayed uniformly. went.
- A It took 3 minutes or more to foam. The possibility of equipment contamination due to volatilization is low. ⁇ : It was 1 minute or more and less than 3 minutes until foaming. There is concern about minor equipment contamination due to volatilization. (Triangle
- the process suitability is that the liquid crystal is dropped 40 pL at a time by using a constant volume metering pump 100000 times in the ODF process, and the following “0 to 200 times, 201 to 400 times, 401 to 600 times, ..., 99801 to 100,000 times ”, the change in the amount of liquid crystal dropped 200 times was evaluated in the following four stages.
- Table 2 shows the initial VHR of the liquid crystal compositions of Examples 1-2 and Comparative Examples 1-2, VHR after heating (150 ° C., 1 hour), evaluation of image sticking and evaluation of process suitability.
- Example 1 has a composition in which 0.3 parts by weight of the compound represented by the formula (ic-2) is added to 100 parts by weight of the liquid crystal composition of Comparative Example 1.
- the addition of the compound represented by the formula (ic-2) did not affect the physical properties of Tni, ⁇ n, ⁇ , and ⁇ . That is, the physical properties of Example 1 were the same as those of Comparative Example 1.
- the liquid crystal composition of Example 1 is excellent in burn-in evaluation and process suitability.
- Example 2 has a composition in which 0.3 part by weight of the compound represented by the formula (ic-2) is added to 100 parts by weight of the liquid crystal composition of Comparative Example 2.
- the addition of the compound represented by the formula (ic-2) did not affect the physical properties of Tni, ⁇ n, ⁇ , and ⁇ . That is, the physical properties of Example 2 were the same as those of Comparative Example 2.
- the liquid crystal composition of Example 2 is excellent in burn-in evaluation and process suitability.
- the compounds represented by formulas (44.1) and (44.2) are cyclic ether structures (pyrans) that are easily oxidized to generate a peracid. Structure). That is, the compound represented by the general formula (ii) having a pyran structure improves the solubility of the liquid crystal composition and lowers the viscosity, thereby improving the process compatibility and the oxidation of the pyran structure by the general formula (i ) Is considered to be suppressed. Therefore, the above effect is a particularly remarkable effect that is exhibited by combining the compound represented by the general formula (i) and the compound represented by the general formula (ii).
- Example 3 Comparative Example 3
- a composition using a compound represented by the following chemical formula was prepared, and its physical properties were measured. The results are shown in Table 3.
- Table 4 shows the initial VHR of the liquid crystal compositions of Example 3 and Comparative Example 3, VHR after heating (150 ° C., 1 hour), evaluation of image sticking, and evaluation of process suitability.
- Example 3 has a composition in which 0.3 parts by weight of the compound represented by the formula (ic-2) is added to 100 parts by weight of the liquid crystal composition of Comparative Example 3.
- the addition of the compound represented by the formula (ic-2) did not affect the physical properties of Tni, ⁇ n, ⁇ , and ⁇ . That is, the physical properties of Example 3 were the same as those of Comparative Example 3.
- the liquid crystal composition of Example 3 is excellent in burn-in evaluation and process suitability.
- the reason why the above effect is exerted in the liquid crystal composition of the present invention is that the compounds represented by formula (ii-c-3), formula (ii-c-5) and formula (ii-c-7) are oxidized It can be considered that it has a cyclic ether structure (pyran structure) that easily generates peracid. That is, the compound represented by the general formula (ii) having a pyran structure improves the solubility of the liquid crystal composition and lowers the viscosity, thereby improving the process compatibility and the oxidation of the pyran structure by the general formula (i ) Is considered to be suppressed. Therefore, the above effect is a particularly remarkable effect that is exhibited by combining the compound represented by the general formula (i) and the compound represented by the general formula (ii).
- Example 1 in Table 5 is the same as Example 1 in Table 1.
- each formula in Table 5 indicates the ratio (unit: mass%) of each compound contained in each composition.
- Table 5 the physical property values of Tni, ⁇ n, ⁇ , and ⁇ of Example 1 are substituted with the physical property values of Comparative Example 1 of Table 1.
- Table 6 shows the initial VHR of the liquid crystal compositions of Example 1 and Comparative Examples 4 to 6, VHR after heating (150 ° C., 1 hour), evaluation of image sticking, and evaluation of process suitability.
- Comparative Example 4 is represented by the compound represented by the general formula (i) (compound represented by the formula (ic-2)) and the general formula (ii) contained in the liquid crystal composition of Example 1.
- This is a liquid crystal composition containing a large amount of the compound represented by the formula (45.2), in addition to the compound represented by the formula (44.1) and the formula (44.2).
- the Tni of Comparative Example 4 is greatly reduced and the viscosity ⁇ is increased. Therefore, Example 1 has a higher Tni temperature and can be used in a wide temperature range. In addition, Example 1 has a lower viscosity, and a faster response speed can be obtained when used in a liquid crystal display element.
- the liquid crystal composition of Example 1 is excellent in burn-in evaluation. The reason why the liquid crystal composition of Example 1 is excellent in the above evaluation is as described above.
- Comparative Example 5 is represented by the compound represented by general formula (i) (compound represented by formula (ic-2)) and the general formula (ii) contained in the liquid crystal composition of Example 1. And a compound represented by the formula (37.2) and the formula (41.2) are added, and a liquid crystal composition in which the compound represented by the formula (44.1) and the formula (44.2) is added. It is.
- ⁇ of Comparative Example 5 is greatly reduced. Therefore, Example 1 can be used with a lower driving voltage when used in a liquid crystal display element. Furthermore, the liquid crystal composition of Example 1 is excellent in burn-in evaluation. The reason why the liquid crystal composition of Example 1 is excellent in the above evaluation is as described above.
- Comparative Example 6 is represented by the compound represented by general formula (i) (compound represented by formula (ic-2)) and the general formula (ii) contained in the liquid crystal composition of Example 1.
- the liquid crystal compositions of Comparative Example 6 and Example 1 were prepared so that ⁇ n and viscosity ⁇ were equal.
- Tni of Comparative Example 6 is significantly reduced. Therefore, Example 1 has a higher Tni temperature and can be used in a wider temperature range.
- the liquid crystal composition of Example 1 is excellent in burn-in evaluation. The reason why the liquid crystal composition of Example 1 is excellent in the above evaluation is as described above.
- Example 4 A composition using a compound represented by the following chemical formula was prepared, and its physical properties were measured. The results are shown in Table 7.
- each formula in Table 7 indicates the ratio (unit: mass%) of each compound contained in each composition.
- the compound represented by the formula (ic-2) was added to 100 parts by weight of the liquid crystal composition composed of the compounds represented by the formulas (26.2) to (28.3).
- the composition has 3 parts by weight added.
- Table 8 shows the initial VHR of the liquid crystal composition of Example 4, VHR after heating (150 ° C., 1 hour), evaluation of image sticking, and evaluation of process suitability.
- Example 5 A composition using a compound represented by the following chemical formula was prepared, and its physical properties were measured. The results are shown in Table 9.
- each formula in Table 9 indicates the ratio (unit: mass%) of each compound contained in each composition.
- Example 5 with respect to 100 parts by weight of the liquid crystal composition composed of the compounds represented by the formulas (1.3) to (19.4), the compound represented by the formula (ic-2) was reduced to 0.
- the composition has 3 parts by weight added.
- Table 10 shows the initial VHR of the liquid crystal composition of Example 5, VHR after heating (150 ° C., 1 hour), evaluation of image sticking, and evaluation of process suitability.
- Example 6 A composition using a compound represented by the following chemical formula was prepared, and its physical properties were measured. The results are shown in Table 11.
- each formula in Table 11 indicates the ratio (unit: mass%) of each compound contained in each composition.
- Example 6 with respect to 100 parts by weight of the liquid crystal composition composed of the compounds represented by the formulas (26.2) to (20.2), the compound represented by the formula (ic-2) was reduced to 0.
- the composition has 3 parts by weight added.
- Table 12 shows initial VHR of the liquid crystal composition of Example 6, VHR after heating (150 ° C., 1 hour), evaluation of image sticking, and evaluation of process suitability.
- Example 7 A composition using a compound represented by the following chemical formula was prepared, and its physical properties were measured. The results are shown in Table 13.
- each formula in Table 13 indicates the ratio (unit: mass%) of each compound contained in each composition.
- Example 7 with respect to 100 parts by weight of the liquid crystal composition composed of the compounds represented by the formulas (26.2) to (26.1), the compound represented by the formula (ic-2) was reduced to 0.
- the composition has 3 parts by weight added.
- Table 14 shows initial VHR of the liquid crystal composition of Example 7, VHR after heating (150 ° C., 1 hour), evaluation of image sticking, and evaluation of process suitability.
- Example 8 comparative example 7
- a composition using a compound represented by the following chemical formula was prepared, and its physical properties were measured. The results are shown in Table 15.
- Table 16 shows the initial VHR of the liquid crystal compositions of Example 8 and Comparative Example 7, VHR after heating (150 ° C., 1 hour), evaluation of image sticking, and evaluation of process suitability.
- Example 8 has a composition in which 0.3 parts by weight of the compound represented by the formula (ic-2) is added to 100 parts by weight of the liquid crystal composition of Comparative Example 7.
- the addition of the compound represented by the formula (ic-2) did not affect the physical properties of Tni, ⁇ n, ⁇ , and ⁇ . That is, the physical properties of Example 8 were the same as those of Comparative Example 7.
- the liquid crystal composition of Example 8 is excellent in both initial VHR and VHR after heating.
- the liquid crystal composition according to the present invention is widely applicable in the fields of liquid crystal display elements and liquid crystal displays.
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Abstract
Description
(式中、Ri1は炭素原子数1~8のアルキル基を表し、Ai1は、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。)、1,4-フェニレン基(この基中に存在する1個又は2個以上の水素原子はフッ素原子に置き換えられてもよい。)又は単結合を表し、
Rii1は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
Rii2はフッ素原子、塩素原子、シアノ基又は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、該アルキル基中の1個又は2個以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、
Aii1及びAii2はそれぞれ独立して、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。)、1,4-フェニレン基(この基中に存在する1個又は2個以上の水素原子はフッ素原子に置き換えられてもよい。)を表し、
Zii1及びZii2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-COO-、-OCO-又は-C≡C-を表し、
mii1及びmii2はそれぞれ独立して0、1、2又は3を表すが、
mii1+mii2は1、2、3又は4であり、
Aii1及びZii1が複数存在する場合、各Aii1及び各Zii1はそれぞれ同一であってもよく異なっていてもよく、
Aii2及びZii2が複数存在する場合、各Aii2及び各Zii2はそれぞれ同一であってもよく異なっていてもよい。)
[3]前記一般式(ii)におけるRii2が炭素原子数1~8のアルキル基又は炭素原子数1~8のアルコシキ基である化合物を1種又は2種以上含有する前記[1]又は[2]に記載の液晶組成物。
[4]2,3-ジフルオロベンゼン-1,4-ジイル基を少なくとも1個有する前記一般式(ii)で表される化合物を1種又は2種以上含有する前記[1]~[3]のいずれか一項に記載の液晶組成物。
[5]下記一般式(L)で表される化合物を含有する前記[1]~[4]のいずれか一項に記載の液晶組成物。
(式中、RL1及びRL2はそれぞれ独立して炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
OLは0、1、2又は3を表し、
BL1、BL2及びBL3はそれぞれ独立して
(a) 1,4-シクロヘキシレン基(この基中に存在する1個の-CH2-又は隣接していない2個以上の-CH2-は-O-に置き換えられてもよい。)及び
(b) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)中の1個及び/又は2個以上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
LL1及びLL2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-COO-、-OCO-、-OCF2-、-CF2O-、-CH=N-N=CH-、-CH=CH-、-CF=CF-又は-C≡C-を表し、
OLが2又は3であってLL2が複数存在する場合は、それらは同一であっても異なっていても良く、OLが2又は3であってBL3が複数存在する場合は、それらは同一であっても異なっていても良い。ただし、一般式(ii)で表される化合物を除く。)
(式中、RM1は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
PMは、0、1、2、3又は4を表し、
CM1及びCM2はそれぞれ独立して、
(d) 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-又は-S-に置き換えられてもよい。)及び
(e) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(d)、基(e)中の1個及び/又は2個以上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
KM1及びKM2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-COO-、-OCO-又は-C≡C-を表し、
PMが2、3又は4であってKM1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、PMが2、3又は4であってCM2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、
XM1及びXM3はそれぞれ独立して水素原子、塩素原子又はフッ素原子を表し、
XM2は、水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基又は2,2,2-トリフルオロエチル基を表す。ただし、一般式(ii)で表される化合物を除く。)
(式中、RX1及びRX2はお互い独立して炭素原子数1から10のアルキル基、炭素原子数1から10のアルコキシ基又は炭素原子数2から10のアルケニル基を表し、これらの基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は-O-又は-S-に置換されていても良く、またこれらの基中に存在する1個又は2個以上の水素原子はフッ素原子又は塩素原子に置換されても良く、
u及びvはお互い独立して、0、1又は2を表すが、u+vは2以下であり、
MX1、MX2及びMX3はお互い独立して、
(a)トランス-1,4-シクロへキシレン基(この基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は-O-又は-S-に置き換えられてもよい。)、
(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=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)又は基(b)に含まれる水素原子はそれぞれシアノ基、フッ素原子、トリフルオロメチル基、トリフルオロメトキシ基又は塩素原子で置換されていても良いが、MX2及び/又はMX3が複数存在する場合は、それらは同一でも良く異なっていても良く、
LX1、LX2及びLX3はお互い独立して単結合、-COO-、-OCO-、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-,-CH=CH-又は-C≡C-を表し、LX1及び/又はLX3が複数存在する場合は、それらは同一でも良く異なっていても良く、
XX1及びXX2はお互い独立してトリフルオロメチル基、トリフルオロメトキシ基又はフッ素原子を表すが、XX1及びXX2のいずれか一つはフッ素原子を表す。ただし、一般式(ii)で表される化合物及び一般式(L)で表される化合物を除く。)
[9]前記[1]~[7]のいずれか1項に記載の液晶組成物を使用したことを特徴とするIPSモード用液晶表示素子。
[10]前記[1]~[7]のいずれか1項に記載の液晶組成物を使用したことを特徴とするFFSモード用液晶表示素子。
[11]前記[1]~[7]のいずれか一項に記載の液晶組成物を使用したOCBモード用液晶表示素子。
[12]前記[1]~[7]のいずれか一項に記載の液晶組成物を使用したECBモード用液晶表示素子。
[13]前記[1]~[7]のいずれか一項に記載の液晶組成物を使用したVAモード用液晶表示素子。
[14]前記[1]~[7]のいずれか一項に記載の液晶組成物を使用したVA-IPSモード用液晶表示素子。
[15]前記[8]~[14]のいずれか一項に記載の液晶表示素子を使用した液晶ディスプレイ。
一般式(i)中、Ri1はそれぞれ独立して炭素原子数1~8のアルキル基を表すが、前記アルキル基は、直鎖状であることが好ましい。
Ai1は、1,4-シクロヘキシレン基又は1,4-フェニレン基であることが好ましく、1,4-シクロヘキシレン基であることがより好ましい。
本発明の液晶組成物の総質量に対して、前記化合物の含有量の下限値としては0.001質量%が好ましく、0.005質量%が好ましく、0.01質量%が好ましく、前記化合物の含有量の上限値としては1質量%が好ましく、0.1質量%が好ましく、0.05質量%が好ましい。
一般式(i)で表される化合物で表される化合物の含有量が多いと酸化防止材としての効果は大きくなるが、後述する初期の電流値は上昇してしまう。逆に少ないと酸化防止材としての機能が十分に発揮されない。
前記下限値と上限値の好ましい組み合わせとして、例えば、0.001~1質量%、0.005~0.1質量%、0.01~0.05質量%が挙げられる。
一般式(i-c)中、R13aは炭素原子数1~5の直鎖アルキル基が好ましい。
一般式(i-d)中、R13aは炭素原子数1~5の直鎖アルキル基が好ましい。
一般式(i-a)から一般式(i-d)で表される化合物中、一般式(i-a)及び一般式(i-c)で表される化合物がより好ましい。
一般式(ii)中、Rii1は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよい。前記アルキル基は、直鎖状であってもよいし、分岐鎖状であってもよい。
Rii1は、水素原子が置換されていない直鎖アルキル基、直鎖アルケニル基又は直鎖アルコキシ基であることが好ましく、炭素原子数1~5の直鎖アルキル基、炭素原子数2~5の直鎖アルケニル基又は炭素原子数1~4のアルコキシ基であることがより好ましく、炭素原子数2~5の直鎖アルキル基、下記のアルケニル基
又は炭素原子数1~4のアルコキシ基であることが更に好ましい。
Rii2は、フッ素原子又は水素原子が置換されていない直鎖アルキル基、直鎖アルケニル基又は直鎖アルコキシ基であることが好ましく、フッ素原子又は炭素原子数1~5の直鎖アルキル基、炭素原子数2~5の直鎖アルケニル基又は炭素原子数1~4のアルコキシ基であることがより好ましく、フッ素原子又は炭素原子数2~5の直鎖アルキル基、下記のアルケニル基
又は炭素原子数1~4のアルコキシ基であることが更に好ましい。
一般式(ii)中、Aii1、Aii2、Zii1及びZii2のうち、いずれか1つ以上が複数存在する場合、それらは同一であっても異なっていてもよい。すなわち、Aii1及びZii1が複数存在する場合、各Aii1は互いに同一であってもよく異なっていてもよく、各Zii1は互いに同一であってもよく異なっていてもよく、Aii2及びZii2が複数存在する場合、各Aii2は互いに同一であってもよく異なっていてもよく、各Zii2は互いに同一であってもよく異なっていてもよい。
一般式(ii)で表される化合物を含む液晶組成物の応答速度の改善を重視する場合にはmii1+mii2は1又は2が好ましく、前記液晶相上限温度の改善を重視する場合にはmii1+mii2は3又は4が好ましく、それらのバランスを重視する場合にはmii1+mii2は2又は3が好ましい。
本発明の液晶組成物の総質量に対して、前記化合物の含有量の下限値としては1%が好ましく、5%が好ましく、8%が好ましく、10%が好ましく、13%が好ましく、15%が好ましく、18%が好ましく、20%が好ましく、前記化合物の含有量の上限値としては40%が好ましく、35%が好ましく、30%が好ましく、27%が好ましく、25%が好ましく、23%が好ましく、20%が好ましく、18%が好ましく、15%が好ましく、13%が好ましく、10%が好ましい。一般式(ii)で表される化合物を添加すると応答速度を悪化させずにΔεを大きくすることが可能であるが、一般式(ii)で表される化合物の含有量を多くすると一般式(i)で表される化合物の含有量を増加させなければならない。
前記下限値と上限値の好ましい組み合わせとして、例えば、1~30質量%、5~15質量%、8~10質量%が挙げられる。また、前記組み合わせとして、1~20質量%、1~13質量%、1~8質量%が挙げられる。また、前記組み合わせとして、5~30質量%、10~23質量%、10~18質量%が挙げられる。
前記下限値と前記上限値の好ましい組み合わせとして、例えば、1~30質量%、3~20質量%、6~15質量%、8~12質量%が挙げられる。
前記下限値と前記上限値の好ましい組み合わせとして、例えば、1~30質量%、3~20質量%、6~15質量%、が8~12質量%挙げられる。
Xii11及びXii12のうち少なくとも一方が水素原子であることが好ましく、Xii11及びXii12の両方が水素原子であることがより好ましい。
Xii13はフッ素原子であることが好ましく、Xii14はフッ素原子であることが好ましく、Xii13及びXii14がフッ素原子であることがより好ましい。
最も好ましい範囲のうち、前記含有量は、2質量%以上5質量%以下であってもよいし、2質量%以上4質量%以下であってもよいし、2質量%以上3質量%以下であってもよいし、3質量%以上6質量%以下であってもよいし、3質量%以上5質量%以下であってもよいし、4質量%以上6質量%以下であってもよいし、5質量%以上6質量%以下であってもよい。
特に好ましい範囲のうち、前記含有量は、3質量%以上10質量%以下であってもよいし、3質量%以上7質量%以下であってもよいし、3質量%以上6質量%以下であってもよいし、3質量%以上5質量%以下であってもよいし、3質量%以上4質量%以下であってもよいし、4質量%以上12質量%以下であってもよいし、4質量%以上10質量%以下であってもよいし、5質量%以上12質量%以下であってもよいし、6質量%以上12質量%以下であってもよいし、7質量%以上12質量%以下であってもよいし、10質量%以上12質量%以下であってもよい。
特に好ましい範囲のうち、前記含有量としては、例えば、5質量%以上12質量%以下、5質量%以上10質量%以下、5質量%以上9質量%以下、5質量%以上8質量%以下、8質量%以上15質量%以下、8質量%以上10質量%以下、9質量%以上15質量%以下、10質量%以上15質量%以下が挙げられる。
一般式(ii-b)で表される化合物は、下記一般式(ii-b-n)で表される化合物であることが好ましい。
一般式(ii-b-n)で表される化合物は、より具体的には、下記式(ii-b-1)~(ii-b-6)で表される化合物であることが好ましい。これらのなかでも、式(ii-b-3)および/または(ii-b-5)を本発明の液晶組成物は含有することが好ましい。
Xii5及びXii6のうち、いずれか一方がフッ素原子であることが好ましく、両方がフッ素原子であることがより好ましい。
Aii2は1,4-シクロヘキシレン基であることが好ましい。
一般式(ii-c-n)中、Rii4は、炭素原子数1~8のアルキル基又は炭素原子数2~8のアルケニル基であることが好ましく、炭素原子数1~5の直鎖アルキル基又は炭素原子数2~5のアルケニル基であることがより好ましい。
上記一般式において、RX1は炭素原子数1~8のアルキル基、炭素原子数2~8のアルケニル基を表すことが好ましく、炭素原子数1~8のアルキル基を表すことがより好ましく、炭素原子数2~5のアルキル基を表すことがより好ましく、直鎖であることが好ましい。
上記一般式において、RX2は炭素原子数1~8のアルキル基、炭素原子数2~8のアルケニル基、炭素原子数1~8のアルコキシ基又は炭素原子数2~8のアルケニルオキシ基を表すことが好ましく、炭素原子数1~8のアルキル基又は炭素原子数1~8のアルコキシ基を表すことが好ましく、炭素原子数2~5のアルキル基又は炭素原子数2~4のアルコキシ基を表すことがより好ましく、直鎖であることが好ましい。
(式中、RL1及びRL2はそれぞれ独立して炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
OLは0、1、2又は3を表し、
BL1、BL2及びBL3はそれぞれ独立して
(a) 1,4-シクロヘキシレン基(この基中に存在する1個の-CH2-又は隣接していない2個以上の-CH2-は-O-に置き換えられてもよい。)及び
(b) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)中の1個及び/又は2個以上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
LL1及びLL2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-COO-、-OCO-、-OCF2-、-CF2O-、-CH=N-N=CH-、-CH=CH-、-CF=CF-又は-C≡C-を表し、
OLが2又は3であってLL2が複数存在する場合は、それらは同一であっても異なっていても良く、OLが2又は3であってBL3が複数存在する場合は、それらは同一であっても異なっていても良い。ただし、前記一般式(ii)で表される化合物を除く。)
一般式(L)で表される化合物は、例えば、一般式(I)で表される化合物群から選ばれる化合物が好ましい。
(式中、R11およびR12はそれぞれ独立して炭素原子数1~5のアルキル基または炭素原子数1~5のアルコキシ基又は炭素原子数2~5のアルケニル基を表し、A11およびA12はそれぞれ独立して1,4-シクロヘキシレン基、1,4-フェニレン基、2-フルオロ-1,4-フェニレン基または3-フルオロ-1,4-フェニレン基を表す。)
更に好ましい範囲のうち、4~15質量%であってもよいし、4~10質量%であってもよいし、4~7質量%であってもよいし、3~4質量%であってもよいし、7~15質量%であってもよいし、10~15質量%であってもよいし、15~20質量%であってもよい。
前記含有量のより好ましい例として、10質量%50質量%以下、20質量%以上40質量%以下、20質量%以上35質量%以下、20質量%以上30質量%以下、20質量%以上25質量%以下、10質量%以上20質量%以下、25質量%以上50質量%以下、30質量%以上50質量%以下、35質量%以上50質量%以下、40質量%以上50質量%以下、が挙げられる。
(式中、R13およびR14はそれぞれ独立して炭素原子数1~5のアルキル基を表す。)
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前記一般式(I-2)で表される複数の化合物を組み合わせることができる。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種類である。また、本発明の別の実施形態では3種類である。
(式中、R11は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、R12は炭素原子数1~5のアルキル基、炭素原子数4~5のアルケニル基または炭素原子数1~4のアルコキシ基を表す。)
(式中、R11およびR12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のアルケニル基または炭素原子数1~4のアルコキシ基を表し、X11およびX12はそれぞれ独立してフッ素原子または水素原子を表し、X11またはX12のどちらか一方はフッ素原子である。)
(式中、R11およびR12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のアルケニル基または炭素原子数1~4のアルコキシ基を表し、X12はそれぞれ独立してフッ素原子または塩素原子を表す。)
(R21およびR22はそれぞれ独立して炭素原子数2~5のアルケニル基、炭素原子数1~5のアルキル基又は炭素原子数1~4のアルコキシ基を表し、A2は1,4-シクロヘキシレン基または1,4-フェニレン基を表し、Q2は単結合、-COO-、-CH2-CH2-または-CF2O-を表す。)
特に好ましい範囲のうち、前記含有量は、5~10質量%であってもよいし、5~8質量%であってもよいし、8~15質量%であってもよいし、10~15質量%であってもよいし、12~15質量%であってもよい。
更に好ましい範囲のうち、例えば、4質量%以上12質量%以下、4質量%以上8質量%以下、4質量%以上6質量%以下、6質量%以上15質量%以下、8質量%以上15質量%以下、10質量%以上15質量%以下、12質量%以上15質量%以下、の含有量が挙げられる。
(式中、R45及びR46はそれぞれ独立して炭素原子数1~5のアルキル基または炭素原子数2~5のアルケニル基を表すが、少なくとも1つは炭素原子数2~5のアルケニル基を表し、X41及びX42はそれぞれ独立して水素原子またはフッ素原子を表す。)
(式中、R51およびR52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のアルコキシ基を表し、A51およびA52はそれぞれ独立して1,4-シクロヘキシレン基または1,4-フェニレン基を表し、Q5は単結合または-COO-を表し、X51およびX52はそれぞれ独立してフッ素原子または水素原子を表す。)
(式中、R51およびR52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のアルコキシを表し、X51およびX52はそれぞれ独立してフッ素原子または水素原子を表す。)
(式中、R51およびR52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のアルコキシ基を表し、X51およびX52はそれぞれ独立してフッ素原子または水素原子を表す。)
(式中、RM1は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
PMは、0、1、2、3又は4を表し、
CM1及びCM2はそれぞれ独立して、
(d) 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-又は-S-に置き換えられてもよい。)及び
(e) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(d)、基(e)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、
KM1及びKM2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-COO-、-OCO-又は-C≡C-を表し、
PMが2、3又は4であってKM1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、PMが2、3又は4であってCM2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、
XM1及びXM3はそれぞれ独立して水素原子、塩素原子又はフッ素原子を表し、
XM2は、水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基又は2,2,2-トリフルオロエチル基を表す。ただし、一般式(ii)で表される化合物を除く。)
(式中、R8は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、X81からX85はそれぞれ独立して水素原子またはフッ素原子を表し、Y8はフッ素原子または-OCF3を表す。)
特に好ましい範囲のうち、前記含有量は、4質量%以上10質量%以下であってもよいし、4質量%以上7質量%以下であってもよいし、4質量%以上6質量%以下であってもよいし、4質量%以上5質量%以下であってもよいし、5質量%以上15質量%以下であってもよいし、6質量%以上15質量%以下であってもよいし、7質量%以上15質量%以下であってもよいし、10質量%以上15質量%以下であってもよい。
(式中、R9は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、X91及びX92はそれぞれ独立して水素原子またはフッ素原子を表し、Y9はフッ素原子、塩素原子または-OCF3を表し、U9は単結合、-COO-または-CF2O-を表す。)
(式中、R9は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、X92は水素原子またはフッ素原子を表し、Y9はフッ素原子または-OCF3を表す。)
前記総質量に対する前記化合物の含有量は、一つの実施形態では1~40質量%、別の実施形態では1~35質量%、更に別の実施形態では1~30質量%、また更に別の実施形態では1~25質量%、また更に別の実施形態では1~10質量%、また更に別の実施形態では1~7質量%、また更に別の実施形態では1~5質量%である。
特に好ましい範囲のうち、前記含有量は、2質量%以上8質量%以下であってもよいし、2質量%以上7質量%以下であってもよいし、2質量%以上5質量%以下であってもよいし、5質量%以上10質量%以下であってもよいし、7質量%以上10質量%以下であってもよいし、8質量%以上10質量%以下であってもよいし、9質量%以上10質量%以下であってもよい。
特に好ましい範囲のうち、前記含有量は、5質量%以上7質量%以下であってもよいし、8質量%以上10質量%以下であってもよい。
更に好ましい範囲のうち、前記含有量は、15質量%以上16質量%以下であってもよいし、17質量%以上18質量%以下であってもよい。
(式中、R9は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、X91およびX92はそれぞれ独立して水素原子またはフッ素原子を表し、Y9はフッ素原子、塩素原子または-OCF3を表す。)
また、例えば、前記総質量に対して、本発明の一つの実施形態では前記化合物の含有量は1~40質量%、別の実施形態では前記化合物の含有量は1~35質量%、更に別の実施形態では前記化合物の含有量は1~30質量%、また更に別の実施形態では前記化合物の含有量は1~25質量%、また更に別の実施形態では前記化合物の含有量は1~22質量%、また更に別の実施形態では前記化合物の含有量は1~15質量%、また更に別の実施形態では前記化合物の含有量は1~12質量%、また更に別の実施形態では前記化合物の含有量は1~8質量%、また更に別の実施形態では前記化合物の含有量は1~4質量%である。
特に好ましい範囲のうち、前記含有量は、5~6質量%であってもよいし、7~8質量%であってもよい。
(式中、X101からX104はそれぞれ独立してフッ素原子または水素原子を表し、Y10はフッ素原子、塩素原子、-OCF3を表し、Q10は単結合または-CF2O-を表し、R10は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、A101およびA102はそれぞれ独立して、1,4-シクロヘキシレン基、1,4-フェニレン基または
より具体的な好ましい実施形態として、前記含有量が、1~10質量%、2~8質量%、2~7質量%、2~5質量%、4~8質量%、及び5~8質量%、である実施形態が例示できる。
より具体的な好ましい実施形態として、前記含有量が、1~10質量%、3~8質量%、2~6質量%、2~5質量%、2~4質量%、3~6質量%、4~6質量%、及び5~6質量%である実施形態が例示できる。
(式中、X102からX103はそれぞれ独立してフッ素原子または水素原子を表し、Y10はフッ素原子、塩素原子、-OCF3を表し、R10は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表す。)
一般式(X-2-2)で表される化合物の含有量は、低温での溶解性、転移温度、電気的な信頼性などを考慮して、本発明の液晶組成物の総質量に対して3質量%以上20質量%以下であることが好ましく、6質量%以上16質量%以下がより好ましく、9質量%以上12質量%以下がさらに好ましく、9質量%以上10質量%以下が特に好ましい。
(式中、X111からX117はそれぞれ独立してフッ素原子または水素原子を表し、X111からX117の少なくとも一つはフッ素原子を表し、R110は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、Y11はフッ素原子または-OCF3を表す。)
特に好ましい範囲のうち、前記含有量として、例えば、2質量%以上4質量%以下、2質量%以上3質量%以下、2質量%以上2.5質量%以下、2.5質量%以上5質量%以下、3質量%以上5質量%以下、4質量%以上5質量%以下、4.5質量%以上5質量%以下、が挙げられる。
特に好ましい範囲のうち、前記含有量は、3~5質量%であってもよいし、6~7質量%であってもよい。
(式中、X121からX126はそれぞれ独立してフッ素原子または水素原子を表し、R120は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、Y12はフッ素原子または-OCF3を表す。)
(式中、X131からX135はそれぞれ独立してフッ素原子または水素原子を表し、R130は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、Y13はフッ素原子または-OCF3を表す。)
(式中、R140は炭素原子数1~7のアルキル基、炭素原子数2~7のアルケニル基または炭素原子数1~7のアルコキシ基を表し、し、X141からX144はそれぞれ独立してフッ素原子または水素原子を表し、Y14はフッ素原子、塩素原子または-OCF3を表し、Q14は単結合、-COO-または-CF2O-を表し、m14は0または1である。)
(式中、R140は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表し、X141からX144はそれぞれ独立してフッ素原子または水素原子を表し、Y14はフッ素原子、塩素原子または-OCF3を表す。)
(式中、R140は炭素原子数1~5のアルキル基、炭素原子数2~5のアルケニル基または炭素原子数1~4のアルコキシ基を表す。)
前記アルキル基、前記アルコキシ基及び前記アルケニル基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は、-O-又は-S-に置換されていてもよい。
前記アルキル基、前記アルコキシ基及び前記アルケニル基中に存在する1個又は2個以上の水素原子はフッ素原子又は塩素原子に置換されてもよい。
一般式(X”)中、MX1、MX2及びMX3はお互い独立して、
(a)トランス-1,4-シクロへキシレン基(この基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は-O-又は-S-に置き換えられてもよい)、
(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=に置き換えられてもよい。)
からなる群より選ばれる基を表す。
MX2及び/又はMX3が複数存在する場合は、それらは同一でもよく、異なっていてもよい。
好ましい含有量の下限値は、本発明の液晶組成物の総量に対して、例えば本発明の一つの実施形態としては1%である。あるいは本発明の別の実施形態では10%である。また、本発明の別の実施形態では20%である。さらに、本発明の別の実施形態では30%である。さらに、本発明の別の実施形態では40%である。さらに、本発明の別の実施形態では50%である。さらに、本発明の別の実施形態では55%である。さらに、本発明の別の実施形態では60%である。さらに、本発明の別の実施形態では65%である。さらに、本発明の別の実施形態では70%である。さらに、本発明の別の実施形態では75%である。さらに、本発明の別の実施形態では80%である。
さらに、好ましい含有量の上限値は、本発明の液晶組成物の総量に対して、例えば本発明の一つの形態では95%である。また、本発明の別の実施形態では85%である。さらに、本発明の別の実施形態では75%である。さらに、本発明の別の実施形態では65%である。さらに、本発明の別の実施形態では55%である。さらに、本発明の別の実施形態では45%である。さらに、本発明の別の実施形態では35%である。さらに、本発明の別の実施形態では25%である。
本発明における液晶組成物の回転粘度(γ1)は150以下が好ましく、130以下がより好ましく、120以下が特に好ましい。
さらに、好ましい含有量の上限値は、本発明の液晶組成物の総量に対して、例えば本発明の一つの形態では50%である。また、本発明の別の実施形態では45%である。さらに、本発明の別の実施形態では40%である。さらに、本発明の別の実施形態では35%である。さらに、本発明の別の実施形態では30%である。さらに、本発明の別の実施形態では25%である。さらに、本発明の別の実施形態では24%である。さらに、本発明の別の実施形態では23%である。さらに、本発明の別の実施形態では22%である。さらに、本発明の別の実施形態では21%である。さらに、本発明の別の実施形態では20%である。
上記式で表される化合物のΔεの絶対値を大きくする場合には、RX11、RX21、RX12及びRX22はアルコキシ基又はアルケニルオキシ基であることが好ましく、アルコキシ基が更に好ましい。
さらに、好ましい含有量の上限値は、本発明の液晶組成物の総量に対して、例えば本発明の一つの形態では50%である。また、本発明の別の実施形態では45%である。さらに、本発明の別の実施形態では43%である。さらに、本発明の別の実施形態では42%である。さらに、本発明の別の実施形態では41%である。さらに、本発明の別の実施形態では40%である。さらに、本発明の別の実施形態では39%である。さらに、本発明の別の実施形態では38%である。さらに、本発明の別の実施形態では35%である。さらに、本発明の別の実施形態では33%である。さらに、本発明の別の実施形態では30%である。
5質量%以上20質量%以下であることがより好ましく、8質量%以上18質量%以下であることが更に好ましく、10質量%以上15質量%以下であることが特に好ましい。
一般式(XII”)で表される化合物を3種使用する場合には、式(XII”-2-1)から式(XII”-2-3)で表される化合物を組み合わせて使用することが好ましく、式(XII”-2-1)から式(XII”-2-3)で表される化合物の含有量が、一般式(XII”)で表される化合物の総質量に対して50質量%以上であることが好ましく、70質量%以上であることがより好ましく、80質量%以上であることが更に好ましい。
一般式(XII”)で表される化合物を2種使用する場合には、式(XII”-2-1)及び式(XII”-2-3)で表される化合物を組み合わせて使用することが好ましく、式(XII”-2-1)及び式(XII”-2-3)で表される化合物の含有量が、一般式(XII”)で表される化合物の総質量に対して50質量%以上であることが好ましく、70質量%以上であることがより好ましく、80質量%以上であることが更に好ましい。
さらに、好ましい含有量の上限値は、本発明の液晶組成物の総量に対して、例えば本発明の一つの形態では95%である。また、本発明の別の実施形態では85%である。さらに、本発明の別の実施形態では75%である。さらに、本発明の別の実施形態では65%である。さらに、本発明の別の実施形態では55%である。さらに、本発明の別の実施形態では45%である。さらに、本発明の別の実施形態では35%である。さらに、本発明の別の実施形態では30%である。さらに、本発明の別の実施形態では28%である。さらに、本発明の別の実施形態では27%である。さらに、本発明の別の実施形態では25%である。
更に詳述すると、一般式(XIII”)で表される化合物としては、RX1がプロピル基を表しRX2がエチル基を表す化合物、又はRX1がブチル基を表しRX2がエチル基を表す化合物が好ましい。
この場合において、フッ素原子が2つの場合は、X33~X36のいずれか2つがフッ素原子を表すことが好ましく、X33及びX34の組み合わせがともにフッ素原子を表す、又はX35及びX36の組み合わせがともにフッ素原子を表すことが好ましく、X33及びX34の組み合わせがともにフッ素原子を表すことが更に好ましい。フッ素原子が3つ以上の場合は、少なくともX33及びX34の組み合わせがともにフッ素原子を表す、又は少なくともX35及びX36の組み合わせがともにフッ素原子を表すことが好ましく、少なくともX33及びX34の組み合わせがともにフッ素原子を表すことが更に好ましい。
(式中、X201及びX202はそれぞれ独立して、水素原子又はメチル基を表し、
Sp201及びSp202はそれぞれ独立して、単結合、炭素原子数1~8のアルキレン基又は-O-(CH2)s-(式中、sは2から7の整数を表し、酸素原子は芳香環に結合するものとする。)を表し、
Z201は-OCH2-、-CH2O-、-COO-、-OCO-、-CF2O-、-OCF2-、-CH2CH2-、-CF2CF2-、-CH=CH-COO-、-CH=CH-OCO-、-COO-CH=CH-、-OCO-CH=CH-、-COO-CH2CH2-、-OCO-CH2CH2-、-CH2CH2-COO-、-CH2CH2-OCO-、-COO-CH2-、-OCO-CH2-、-CH2-COO-、-CH2-OCO-、-CY1=CY2-(式中、Y1及びY2はそれぞれ独立して、フッ素原子又は水素原子を表す。)、-C≡C-又は単結合を表し、
M201は1,4-フェニレン基、トランス-1,4-シクロヘキシレン基又は単結合を表し、式中の全ての1,4-フェニレン基は、任意の水素原子がフッ素原子により置換されていても良い。)で表される二官能モノマーが好ましい。
本発明の重合性化合物を含有した液晶組成物は、これに含まれる重合性化合物が紫外線照射により重合することで液晶配向能が付与され、液晶組成物の複屈折を利用して光の透過光量を制御する液晶表示素子に使用される。液晶表示素子として、ECB-LCD、VA-LCD、FFS-LCD、AM-LCD(アクティブマトリックス液晶表示素子)、TN(ネマチック液晶表示素子)、STN-LCD(超ねじれネマチック液晶表示素子)、OCB-LCD及びIPS-LCD(インプレーンスイッチング液晶表示素子)に有用であるが、AM-LCDに特に有用であり、透過型あるいは反射型の液晶表示素子に用いることができる。
なお後述の実施例においては、第1基板又は第2基板の材質として基板を使用している。
Tni :ネマチック相-等方性液体相転移温度(℃)
Δn :295Kにおける屈折率異方性(別名:複屈折率)
Δε :295Kおける誘電率異方性
η :295Kにおける粘度(mPa・s)
初期電圧保持率(初期VHR):周波数60Hz,印加電圧4Vの条件下で50℃における電圧保持率(%)
加熱後電圧保持率(加熱後のVHR):150℃の雰囲気下に1時間保持した後、初期VHRと同一条件で測定した電圧保持率(%)
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1440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のレベルを目視にて以下の4段階評価で行った。
○:残像ごく僅かに有るも、許容できるレベルであった。
△:残像有り、許容できないレベルであった。
×:残像有り、かなり劣悪であった。
液晶材料の揮発性評価は、真空攪拌脱泡ミキサーの運転状態をストロボスコープで照らしながら観察し、液晶材料の発泡を目視により観察することによって行った。具体的には、容量2.0Lの真空攪拌脱泡ミキサーの専用容器に液晶組成物を0.8kg入れ、4kPaの脱気下、公転速度15S-1、自転速度7.5S-1で真空攪拌脱泡ミキサーを運転し、発泡が始まるまでの時間によって、以下の4段階評価で行った。
○:発泡するまで1分以上かつ3分未満であった。揮発による軽微な装置汚染の懸念あり。
△:発泡するまで30秒以上かつ1分未満であった。揮発による装置汚染が起きる。
×:発泡するまで30秒以内であった。揮発による重大な装置汚染の懸念がある。
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1回に40pLずつ液晶を滴下することを100000回行い、次の「0~200回、201~400回、401~600回、・・・・99801~100000回」の各200回ずつ滴下された液晶量の変化を以下の4段階で評価した。
○:変化が僅かに有るも許容できるレベル
△:変化が有り許容できないレベル(斑発生により歩留まりが悪化)
×:変化が有りかなり劣悪(液晶漏れや真空気泡が発生)
低温での溶解性評価は、液晶組成物を調製後、1mLのサンプル瓶に液晶組成物を0.5g秤量し、これに温度制御式試験槽の中で、次を1サイクル「-20℃(1時間保持)→昇温(0.2℃/毎分)→0℃(1時間保持)→昇温(0.2℃/毎分)→20℃(1時間保持)→降温(-0.2℃/毎分)→0℃(1時間保持)→降温(-0.2℃/毎分)→-20℃」として温度変化を与え続け、目視にて液晶組成物からの析出物の発生を観察し、以下の4段階評価を行った。
○:300時間以上析出物が観察されなかった。
△:150時間以内に析出物が観察された。
×:75時間以内に析出物が観察された。
以下に示す化学式で表される化合物を用いた組成物を調製し、その物性を測定した。その結果を表1に示す。
実施例1の液晶組成物は焼き付き評価及びプロセス適合性に優れる。
実施例2の液晶組成物は焼き付き評価及びプロセス適合性に優れる。
以下に示す化学式で表される化合物を用いた組成物を調製し、その物性を測定した。その結果を表3に示す。
実施例3の液晶組成物は焼き付き評価及びプロセス適合性に優れる。
以下に示す化学式で表される化合物を用いた組成物を調製し、その物性を測定した。その結果を表5に示す。表5の実施例1は、表1の実施例1と同一である。
実施例1と比較例4の物性値を比較すると、比較例4のTniが大きく低下し、粘度ηが大きくなっている。したがって、実施例1の方がTniの温度が高く、広い温度範囲で使用可能である。また、実施例1の方が、粘度が低く、液晶表示素子に用いた場合に速い応答速度が得られる。更に、実施例1の液晶組成物は焼き付き評価に優れる。実施例1の液晶組成物が上記の評価に優れる理由は、前述の通りである。
実施例1と比較例5の物性値を比較すると、比較例5の△εが大きく低下している。したがって、実施例1の方が、液晶表示素子に用いた場合に低い駆動電圧で使用することができる。更に、実施例1の液晶組成物は焼き付き評価に優れる。実施例1の液晶組成物が上記の評価に優れる理由は、前述の通りである。
実施例1と比較例6の物性値を比較すると、比較例6のTniが大幅に低下している。したがって実施例1の方が、Tniの温度が高く、広い温度範囲で使用可能である。更に、実施例1の液晶組成物は焼き付き評価に優れる。実施例1の液晶組成物が上記の評価に優れる理由は、前述の通りである。
以下に示す化学式で表される化合物を用いた組成物を調製し、その物性を測定した。その結果を表7に示す。
以下に示す化学式で表される化合物を用いた組成物を調製し、その物性を測定した。その結果を表9に示す。
以下に示す化学式で表される化合物を用いた組成物を調製し、その物性を測定した。その結果を表11に示す。
以下に示す化学式で表される化合物を用いた組成物を調製し、その物性を測定した。その結果を表13に示す。
以下に示す化学式で表される化合物を用いた組成物を調製し、その物性を測定した。その結果を表15に示す。
実施例8の液晶組成物は初期VHR及び加熱後のVHRともに優れる。
Claims (9)
- 下記一般式(i)で表される化合物のうち、いずれか1種又は2種以上を含有し、下記一般式(ii)で表される化合物のうち、いずれか1種又は2種以上を含有する液晶組成物。
(式中、Ri1は炭素原子数1~8のアルキル基を表し、Ai1は、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。)、1,4-フェニレン基(この基中に存在する1個又は2個以上の水素原子はフッ素原子に置き換えられてもよい。)又は単結合を表し、
Rii1は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
Rii2はフッ素原子、塩素原子、シアノ基又は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、該アルキル基中の1個又は2個以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、
Aii1及びAii2はそれぞれ独立して、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。)、1,4-フェニレン基(この基中に存在する1個又は2個以上の水素原子はフッ素原子に置き換えられてもよい。)を表し、
Zii1及びZii2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-COO-、-OCO-又は-C≡C-を表し、
mii1及びmii2はそれぞれ独立して0、1、2又は3を表すが、
mii1+mii2は1、2、3又は4であり、
Aii1及びZii1が複数存在する場合、各Aii1及び各Zii1はそれぞれ同一であってもよく異なっていてもよく、
Aii2及びZii2が複数存在する場合、各Aii2及び各Zii2はそれぞれ同一であってもよく異なっていてもよい。) - 前記一般式(ii)におけるRii2がフッ素原子、トリフルオロメチル基、トリフルオロメトキシ基又はシアノ基である化合物を1種又は2種以上含有する請求項1に記載の液晶組成物。
- 前記一般式(ii)におけるRii2が炭素原子数1~8のアルキル基又は炭素原子数1~8のアルコシキ基である化合物を1種又は2種以上含有する請求項1に記載の液晶組成物。
- 2,3-ジフルオロベンゼン-1,4-ジイル基を少なくとも1個有する前記一般式(ii)で表される化合物を1種又は2種以上含有する請求項1に記載の液晶組成物。
- 下記一般式(L)で表される化合物を含有する請求項1に記載の液晶組成物。
(式中、RL1及びRL2はそれぞれ独立して炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
OLは0、1、2又は3を表し、
BL1、BL2及びBL3はそれぞれ独立して
(a) 1,4-シクロヘキシレン基(この基中に存在する1個の-CH2-又は隣接していない2個以上の-CH2-は-O-に置き換えられてもよい。)及び
(b) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)中の1個及び/又は2個以上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
LL1及びLL2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-COO-、-OCO-、-OCF2-、-CF2O-、-CH=N-N=CH-、-CH=CH-、-CF=CF-又は-C≡C-を表し、
OLが2又は3であってLL2が複数存在する場合は、それらは同一であっても異なっていても良く、OLが2又は3であってBL3が複数存在する場合は、それらは同一であっても異なっていても良い。ただし、一般式(ii)で表される化合物を除く。) - 下記一般式(M)で表される化合物を含有する請求項1に記載の液晶組成物。
(式中、RM1は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
PMは、0、1、2、3又は4を表し、
CM1及びCM2はそれぞれ独立して、
(d) 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-又は-S-に置き換えられてもよい。)及び
(e) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(d)、基(e)中の1個及び/又は2個以上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
KM1及びKM2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-COO-、-OCO-又は-C≡C-を表し、
PMが2、3又は4であってKM1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、PMが2、3又は4であってCM2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、
XM1及びXM3はそれぞれ独立して水素原子、塩素原子又はフッ素原子を表し、
XM2は、水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基又は2,2,2-トリフルオロエチル基を表す。ただし、一般式(ii)で表される化合物を除く。) - 下記一般式(X”)で表される化合物を含有する請求項1に記載の液晶組成物。
(式中、RX1及びRX2はお互い独立して炭素原子数1から10のアルキル基、炭素原子数1から10のアルコキシ基又は炭素原子数2から10のアルケニル基を表し、これらの基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は-O-又は-S-に置換されていても良く、またこれらの基中に存在する1個又は2個以上の水素原子はフッ素原子又は塩素原子に置換されても良く、
u及びvはお互い独立して、0、1又は2を表すが、u+vは2以下であり、
MX1、MX2及びMX3はお互い独立して、
(a)トランス-1,4-シクロへキシレン基(この基中に存在する1個のメチレン基又は隣接していない2個以上のメチレン基は-O-又は-S-に置き換えられてもよい。)、
(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=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)又は基(b)に含まれる水素原子はそれぞれシアノ基、フッ素原子、トリフルオロメチル基、トリフルオロメトキシ基又は塩素原子で置換されていても良いが、MX2及び/又はMX3が複数存在する場合は、それらは同一でも良く異なっていても良く、
LX1、LX2及びLX3はお互い独立して単結合、-COO-、-OCO-、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-,-CH=CH-又は-C≡C-を表し、LX1及び/又はLX3が複数存在する場合は、それらは同一でも良く異なっていても良く、
XX1及びXX2はお互い独立してトリフルオロメチル基、トリフルオロメトキシ基又はフッ素原子を表すが、XX1及びXX2のいずれか一つはフッ素原子を表す。ただし、一般式(ii)で表される化合物及び一般式(L)で表される化合物を除く。) - 請求項1に記載の液晶組成物を使用した液晶表示素子。
- 請求項1に記載の液晶組成物を使用したIPSモード、OCBモード、ECBモード、VAモード、VA-IPSモード又はFFSモード用液晶表示素子。
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JP6206605B2 (ja) * | 2015-06-12 | 2017-10-04 | Dic株式会社 | 組成物及びそれを使用した液晶表示素子 |
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