WO2014136234A1 - 液晶組成物及びそれを使用した液晶表示素子 - Google Patents
液晶組成物及びそれを使用した液晶表示素子 Download PDFInfo
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- 0 *C(CC1)CCC1C1CC*CC1 Chemical compound *C(CC1)CCC1C1CC*CC1 0.000 description 11
- NVLSFDCAJBWTDB-UHFFFAOYSA-N CC(CC1)CCC1C(CC1)CCC1C=C(F)F Chemical compound CC(CC1)CCC1C(CC1)CCC1C=C(F)F NVLSFDCAJBWTDB-UHFFFAOYSA-N 0.000 description 1
- LXTVRKUSWYNRTA-UHFFFAOYSA-N CC(CC1)CCC1c(cc1)ccc1-c(cc1)cc(F)c1F Chemical compound CC(CC1)CCC1c(cc1)ccc1-c(cc1)cc(F)c1F LXTVRKUSWYNRTA-UHFFFAOYSA-N 0.000 description 1
- APRWXBJVZGEUPQ-UHFFFAOYSA-N CC(CC1)CCC1c(cc1)ccc1Cl Chemical compound CC(CC1)CCC1c(cc1)ccc1Cl APRWXBJVZGEUPQ-UHFFFAOYSA-N 0.000 description 1
- AVOQVWGXNBQZLI-UHFFFAOYSA-N CCC(C(CC1)CCC1C(CC1)CCC1c(cc1F)cc(F)c1F)N Chemical compound CCC(C(CC1)CCC1C(CC1)CCC1c(cc1F)cc(F)c1F)N AVOQVWGXNBQZLI-UHFFFAOYSA-N 0.000 description 1
- JEWPQTHIWZNVDZ-HWKANZROSA-N CCc(cc1)ccc1-c(cc1)cc(F)c1-c1ccc(CC/C=C/C)cc1 Chemical compound CCc(cc1)ccc1-c(cc1)cc(F)c1-c1ccc(CC/C=C/C)cc1 JEWPQTHIWZNVDZ-HWKANZROSA-N 0.000 description 1
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Definitions
- the present invention relates to a nematic liquid crystal composition having a positive dielectric anisotropy ( ⁇ ) useful as a liquid crystal display material, and a liquid crystal display device using the same.
- Liquid crystal display elements are used in various measuring instruments, automobile panels, word processors, electronic notebooks, printers, computers, televisions, watches, advertisement display boards, as well as watches and calculators.
- Typical liquid crystal display methods include TN (twisted nematic), STN (super twisted nematic), vertical alignment using TFT (thin film transistor), and IPS (in-plane switching). Etc.
- the liquid crystal composition used in these liquid crystal display elements is stable against external stimuli such as moisture, air, heat, light, etc., and exhibits a liquid crystal phase in the widest possible temperature range centering on room temperature. And a low driving voltage is required.
- the liquid crystal composition is composed of several to several tens of kinds of compounds in order to optimize the dielectric anisotropy ( ⁇ ) and / or the refractive index anisotropy ( ⁇ n) for each display element.
- ⁇ dielectric anisotropy
- ⁇ n refractive index anisotropy
- a liquid crystal composition having a negative ⁇ is used
- a horizontal alignment type display such as a TN type, STN type, or IPS (in-plane switching) type
- a liquid crystal composition having a positive ⁇ Is used.
- a driving method has been reported in which a liquid crystal composition having a positive ⁇ is vertically aligned when no voltage is applied and a horizontal electric field is applied to display the liquid crystal composition, and the necessity of a liquid crystal composition having a positive ⁇ is further increased. Yes.
- low voltage driving, high-speed response, and a wide operating temperature range are required in all driving systems. That is, ⁇ is positive, the absolute value is large, the viscosity ( ⁇ ) is small, and a high nematic phase-isotropic liquid phase transition temperature (Tni) is required.
- ⁇ n ⁇ d which is the product of ⁇ n and the cell gap (d)
- ⁇ n of the liquid crystal composition it is necessary to adjust ⁇ n of the liquid crystal composition to an appropriate range according to the cell gap.
- a liquid crystal composition having a low rotational viscosity ( ⁇ 1) is required.
- composition of the liquid crystal composition intended for high-speed response examples include, for example, a compound represented by the following general formulas (A-1) and (A-2), wherein ⁇ is a positive liquid crystal compound, and a liquid crystal in which ⁇ is neutral.
- a liquid crystal composition using a combination of the following general formula (B) which is a 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. It is widely known in the field. (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 practically used. Became.
- the injection method of liquid crystal composition into the substrate became the main method of injection from the conventional vacuum injection method (ODF: One : Drop Fill), but the liquid crystal composition was applied to the substrate. The problem that the drop marks when dropped causes the display quality to deteriorate is brought to the surface.
- 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 optimum value within a certain range because the optimum liquid crystal dripping amount is small.
- liquid crystal composition used for the active matrix drive liquid crystal display element driven by a TFT element or the like while maintaining the characteristics and performance required for a liquid crystal display element such as high-speed response performance, in addition to the characteristics of having a high specific resistance value or high voltage holding ratio, which are emphasized, and being stable against external stimuli such as light and heat, development in consideration of the manufacturing method of liquid crystal display elements has been required. ing.
- the problem to be solved by the present invention is a liquid crystal composition having a positive ⁇ , a liquid crystal phase in a wide temperature range, low viscosity, good solubility at low temperature, specific resistance and voltage holding ratio.
- IPS type and TN type liquid crystal displays that provide high liquid crystal composition that is stable against heat and light, and that are superior in display quality and are less susceptible to display defects such as image sticking and dripping marks.
- the object is to provide elements with high yield.
- R i1 and R ii1 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—, wherein the hydrogen atom in the alkyl group is replaced by a fluorine atom or a chlorine atom May have been n i1 represents 1 or 2, n ii1 represents 1, 2 or 3, X i1 represents a hydrogen atom or a fluorine atom, A i1 and A ii1 each independently represent a trans-1,4-cyclohexylene group or a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom; Z i1 and Z ii1 each independently represent a single bond, —CH ⁇ CH
- 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).
- the above groups (a) and (b) may be each independently substituted with a cyano group, a fluorine atom or a chlorine atom
- 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 L L2 are present, they
- 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
- a liquid crystal display element for IPS mode wherein the liquid crystal composition according to any one of [1] to [11] is used.
- a liquid crystal display element for OCB mode wherein the liquid crystal composition according to any one of [1] to [11] is used.
- a liquid crystal display element for ECB mode wherein the liquid crystal composition according to any one of [1] to [11] is used.
- a liquid crystal display element for VA-IPS mode wherein the liquid crystal composition according to any one of [1] to [11] is used.
- a liquid crystal display element for FFS mode wherein the liquid crystal composition according to any one of [1] to [11] is used.
- the liquid crystal composition of the present invention has a positive dielectric anisotropy, can obtain a viscosity much lower than conventional, has good solubility at low temperature, and has a specific resistance and voltage holding ratio. Since the change received by heat and light is extremely small, the practicality of the product is high, and an IPS type or FFS type liquid crystal display element using the product can achieve a high-speed response. Further, since the performance can be stably exhibited in the liquid crystal display element manufacturing process, display defects due to the process can be suppressed and the manufacturing can be performed with a high yield, which is very useful.
- a board having 100 to 105 is called a “back plane”, and a board having 200 to 205 is called a “front plane”. It is a figure of the exposure process using the pattern for columnar spacer preparation formed on a black matrix as a photomask pattern.
- the liquid crystal composition of the present invention has a positive dielectric anisotropy and is represented by (ii) at least one of the compounds represented by the general formula (i), which is a dielectrically positive component. Containing at least one of the following compounds.
- the dielectric anisotropy ( ⁇ ) of a compound is a dielectric constant of a composition prepared by adding the compound to a liquid crystal composition having a dielectric anisotropy of about 0 at 25 ° C. It is a value obtained by extrapolating from the measured value of anisotropy.
- “mass%” represents “mass%” unless otherwise specified.
- the liquid crystal composition of the present invention contains a compound represented by the following general formula (i) as an essential component.
- R i1 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—, — C ⁇ C—, —O—, —CO—, —COO— or —OCO— may be substituted, and a hydrogen atom in the alkyl group may be substituted with a fluorine atom or a chlorine atom
- n i1 represents 1 or 2
- X i1 represents a hydrogen atom or a fluorine atom
- a i1 independently represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom
- Z i1 represents a single bond, —CH ⁇
- the compound represented by the general formula (i) contained in the liquid crystal composition of the present invention as an essential component is preferably a compound represented by the following general formula (XIII-2).
- R 13 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the proportion of the compound represented by the general formula (XIII-2) is preferably 5% by mass or more and 25% by mass or less, preferably 6% by mass or more, with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. It is 25% by mass, preferably 8% by mass or more and 20% by mass or less, and preferably 10% by mass or more and 15% by mass or less.
- 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) and / or the formula A compound represented by (49.2) is preferable.
- the compound represented by the general formula (i) is preferably a compound represented by the general formula (XIII-3).
- R 13 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the proportion of the compound represented by the general formula (XIII-3) is preferably 2% by mass or more and 20% by mass or less, preferably 4% by mass or more, with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. It is 20% by mass, preferably 9% by mass to 17% by mass, and preferably 11% by mass to 14% by mass.
- 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) and / or the formula (50) .2) is preferred.
- the compound represented by the general formula (i) 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 0.5% by mass or more, preferably 1% by mass or more, preferably 2% by mass with respect to the total amount of the liquid crystal composition of the present invention. That's it.
- the content of the compound represented by the general formula (X-1-2) is preferably 20% by mass or less, Preferably it is 16 mass% or less, Preferably it is 12 mass% or less, Preferably it is 10 mass%.
- the content of the compound represented by the formula (X-1-2) in the liquid crystal composition is 1 to 20% by mass with respect to the total mass of the liquid crystal composition of the present invention.
- it is 1 to 15% by mass, preferably 2 to 13% by mass, preferably 2 to 10% by mass, and in another embodiment, 1 to 5% by mass.
- it is preferably 3 to 12% by mass, preferably 4 to 10% by mass, and preferably 5 to 9% by mass.
- the compounds represented by the general formula (X-1-2) used in the liquid crystal composition of the present invention are specifically compounds represented by the formulas (37.1) to (37.4).
- 0.5 mass% or more is preferable, 1 mass% or more is preferable, and 2 mass% or more is preferable.
- the content of the compound represented by the formula (37.2) in the liquid crystal composition is 1 to 20% by mass with respect to the total mass of the liquid crystal composition of the present invention.
- it is 1 to 15% by mass, preferably 2 to 13% by mass, preferably 2 to 10% by mass, and in another embodiment 1 to 5% by mass. In another embodiment, it is preferably 3 to 12% by mass, preferably 4 to 10% by mass, and preferably 5 to 9% by mass.
- the compound represented by the general formula (i) of the present invention is preferably a compound represented by the following 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.
- 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 1% by mass or more, preferably 2% by mass or more with respect to the total amount of the liquid crystal composition of the present invention.
- the content of the compound represented by the general formula (X-3-1) is preferably 0.5% by mass or more and 10% by mass. It is 1 mass% or less, Preferably it is 1 mass% or more and 5 mass% or less, Preferably they are 1 mass% or more and 4 mass% or less, Preferably they are 1 mass% or more and 3 mass% or less.
- 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 compound represented by the formula (41.2) is preferably 0.5% by mass or more and 5% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- the compound represented by the general formula (i) is preferably a compound represented by the following general formula (XIV-2-5).
- the content of the compound represented by the general formula (XIV-2-5) is 100 masses of the total mass of the liquid crystal composition of the present invention.
- % Is preferably 5% by weight to 25% by weight, more preferably 10% by weight to 22% by weight, more preferably 13% by weight to 18% by weight, and still more preferably It is 13 mass% or more and 15 mass% or less.
- 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 more preferable to contain a compound represented by the formula (57.1).
- the compound represented by the general formula (i) is preferably a compound represented by the following general formula (XIV-2-6).
- the content of the compound represented by the general formula (XIV-2-6) is 100 mass of the total amount of the liquid crystal composition of the present invention. On the other hand, 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, more preferably 15% by mass or more and 20% by mass or less, and still more preferably 15% by mass. It is from 17% by mass to 17% by mass.
- 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 more preferable to contain the compound represented by 2).
- the liquid crystal composition of the present invention contains a compound represented by the following general formula (ii) as an essential component.
- 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—, — C ⁇ C—, —O—, —CO—, —COO— or —OCO— may be substituted, and a hydrogen atom in the alkyl group may be substituted with a fluorine atom or a chlorine atom, n ii1 represents 1, 2 or 3, A ii1 represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom, Z ii1 represents a single bond, —CH ⁇ CH—, —C ⁇ C—, —CH 2 CH 2 —, —COO— or —OCO—, and when n ii1 represents 2 or 3, A ii1 and Z i
- the content of the compound represented by the general formula (ii) is determined in consideration of required solubility and birefringence. Specifically, the content of the compound represented by the general formula (ii) is preferably 2% by mass or more and 25% by mass or less, more preferably 5% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. % To 20% by mass, and more preferably 7% to 15% by mass.
- the compound represented by the general formula (ii) 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 preferably 1% by mass or more and 30% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. % To 20% by mass is more preferable, 6% to 15% by mass is more preferable, and 8% to 10% by mass is particularly preferable.
- the compound represented by the general formula (IX-2-4) is preferably a compound represented by the formula (33.1) to the formula (33.6), and the formula (33.1) and / or Or it is more preferable that it is a compound represented by Formula (33.3), and it is more preferable that it is a compound represented by Formula (33.1).
- Content of the compound represented by Formula (33.1) is 3 mass% or more with respect to the total amount of the liquid-crystal composition of this invention, Preferably it is 5 mass% or more, More preferably, it is 7 mass% or more.
- the content of the compound represented by the formula (33.1) is preferably 20% by mass or less, more preferably It is 16 mass% or less, More preferably, it is 12 mass% or less, and More preferably, it is 10 mass%.
- the content of the compound represented by the formula (33.1) in the liquid crystal composition is 3 to 20% by mass with respect to the total mass of the liquid crystal composition of the present invention. Preferably, it is 5 to 16% by mass, preferably 5 to 12% by mass, and preferably 7 to 10% by mass.
- the compound represented by the general formula (ii) is preferably a compound represented by the general formula (XIV-2-2).
- R 14 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XIV-2-2) is 3% by mass or more, preferably 5% by mass or more, more preferably 6% by mass or more with respect to the total amount of the liquid crystal composition of the present invention. It is.
- the content of the compound represented by the general formula (XIV-2-2) is preferably 30% by mass or less, More preferably, it is 25 mass% or less, More preferably, it is 20 mass% or less, More preferably, it is 18 mass% or less, More preferably, it is 16 mass% or less, More preferably, it is 15 mass% or less, More preferably, it is 13 mass% or less, More preferably, it is 11 mass% or less, and More preferably, it is 8 mass%.
- the content of the compound represented by the general formula (XIV-2-2) is preferably 2% by mass or more and 30% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. It is more preferably 25% by mass or less, further preferably 5% by mass or more and 20% by mass or less, and further preferably 6% by mass or more and 18% by mass or less.
- 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 more preferable to contain the compound represented by 1), Formula (54.2) and / or Formula (54.4).
- the content of the compound represented by the formula (54.1) 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 more preferably 0.5% by mass or less and 10% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.
- the content of the compound represented by the formula (54.2) is preferably 5% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention.
- the content of the compound represented by the formula (54.4) is 2% by mass or more and 10% by mass or less based on the total mass of the liquid crystal composition of the present invention. It is preferably 3% by mass or less and 8% by mass or less, more preferably 4% by mass or more and 6% by mass or less.
- the compound represented by the general formula (ii) 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 compounds represented by the general formula (X-1-3) used in the liquid crystal composition of the present invention are specifically the compounds represented by the formulas (38.1) to (38.4).
- 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. It is more preferably 2% by mass or less and 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, more preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass. % Or less, more preferably 3% by mass or more and 8% by mass or less, and particularly preferably 4% by mass or more and 5% by mass or less.
- the compound represented by the general formula (ii) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (XIV-3).
- R 14 represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkoxy group having 1 to 7 carbon atoms.
- the content of the compound represented by the general formula (XIV-3) is 1 mass relative to the total amount of the liquid crystal composition of the present invention. % To 15% by mass, preferably 4% to 15% by mass, more preferably 4% to 13% by mass, more preferably 4% to 11% by mass, and more preferably 4% by mass. The content is particularly preferably 9% by mass or less.
- the compound represented by the general formula (XIV-3) is specifically preferably a compound represented by the formula (60.1) to the formula (60.6), among which the formula (60.1) It is preferable to contain the compound represented by these.
- the content of the compound represented by the formula (60.1) is preferably 4% by mass or more and 9% 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 (i) and the compound represented by the general formula (ii) can be used in combination of two or more in total, and the compound represented by the formula (37.2) And a combination of compounds represented by formula (33.1), a compound represented by formula (37.2) and a compound represented by formula (54.2), represented by formula (37.2)
- a compound represented by formula (54.2) and a compound represented by formula (54.4), a compound represented by formula (41.2), and a formula (54.1) And a combination of the compound represented by formula (54.2) are preferred.
- the total content of the compound represented by the general formula (i) and the compound represented by the general formula (ii) is 5% 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. It is preferably 7% by mass or more and 23% by mass or less, preferably 9% by mass or more and 20% by mass or less, and more preferably 10% by mass or more and 19% by mass or less.
- the liquid crystal composition of the present invention preferably contains at least one compound represented by the 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).
- the above groups (a) and (b) may be each independently substituted with a cyano group, a fluorine atom or a chlorine atom
- 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 L L2 are present, they
- 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 is 1 to 95% by mass with respect to the total mass of the liquid crystal composition 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. In still another embodiment of the present invention, the content is 1% to 85%. In still another embodiment of the present invention, the content is 1% to 75%. In still another embodiment of the present invention, the content is 1% to 65%. In still another embodiment of the present invention, the content is 1% to 55%. In still another embodiment of the present invention, the content is 1% to 45%. In still another embodiment of the present invention, the content is 1% to 35%. In still another embodiment of the present invention, the content is 1% to 25%.
- the lower limit value and the upper limit value are preferably high in order to keep the viscosity of the liquid crystal composition low. 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 both the lower limit value and the upper limit value are high. In order to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value and the upper limit value are 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 kind of the compound used is, for example, one kind as one embodiment of the present invention.
- the content of the compound represented by the general formula (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 lower limit value and the upper limit value are preferably high in order to keep the viscosity of the liquid crystal composition low. 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 lower limit value is medium and the upper limit value is medium. 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 lowered and the upper limit value is low.
- R 11 and R 12 are each a linear alkyl group having 1 to 5 carbon atoms or a linear carbon atom having 1 to 4 carbon atoms when the ring structure to which R 11 and R 12 are bonded is a phenyl group (aromatic).
- the ring structure to which it is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, a straight-chain C 1-5 carbon atom is preferred.
- Alkyl groups, linear alkoxy groups having 1 to 4 carbon atoms and linear alkenyl groups having 2 to 5 carbon atoms are 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-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.
- 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 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 is 3 to 70% by mass with respect to the total mass of the liquid crystal composition 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. In still another embodiment of the present invention, the content is 35% to 70% by mass. In still another embodiment of the present invention, the content is 43% to 70% by mass. In still another embodiment of the present invention, the content is 47% to 70% by mass. In still another embodiment of the present invention, the content is 50% to 70% by mass. In still another embodiment of the present invention, the content is 53% to 70% by mass. In still another embodiment of the present invention, 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 lower limit value and the upper limit value are preferably high in order to reduce the viscosity of the liquid crystal composition. Furthermore, when a liquid crystal composition with good temperature stability is required, the lower limit value and the upper limit value are preferably moderate in order to keep the Tni of the liquid crystal composition high. In order to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value and the upper limit value are low.
- the compound represented by the general formula (I-1) is preferably a compound represented by the general formula (I-1-1).
- 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. In still another embodiment of the present invention, the content is 5% to 10% 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 effective for improving the response speed
- the content of the compound represented by the formula (1.3) is a liquid crystal with a high response speed and a high electrical and optical reliability within the range shown below. This is preferable because a composition can be formed.
- the compound represented by the formula (1.3) is preferably contained in an amount of 5% by mass to 35% by mass and more preferably 6% by mass to 30% by mass with respect to the total mass of the liquid crystal composition of the present invention. More preferably, it is more preferably 8% by mass to 25% by mass, particularly preferably 10% by mass to 20% by mass, and most preferably 10% by mass to 15% by mass.
- the compound represented by the general formula (I-1) is preferably a compound represented by the general formula (I-1-2).
- R 12 represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.
- R 12 represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.
- 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 47% by mass.
- 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. In still another embodiment of the present invention, the content is 22% to 45% 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 a compound represented by formula (2.4) is more preferable.
- 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 are 10% by mass to 40% by mass, 14% to 40% by mass, 17% to 40% by mass, 19% to 40% by mass, 22% to 40% by mass. % Or less, 25% to 40% by mass, 27% to 40% by mass, 30% to 40% by mass, 33% to 40% by mass, and 36% to 40% by mass. 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. More preferably, it is 10 mass% and 45 mass% or less, More preferably, it is 10 mass% or more and 35 mass% or less, More preferably, it is 10 mass% or more and 30 mass% or less, 10 mass% or more and 25 mass% or less % Or less, more preferably 11% by mass or more and 25% by mass or less, and particularly preferably 13% by mass or more and 25% by mass or less. It is particularly preferably 15% by mass or more and 25% by mass or less.
- 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.
- 3% by mass to 45% by mass is more preferable, 3% by mass to 35% by mass is more preferable, 3% by mass to 25% by mass is more preferable, and 3% by mass to 15% by mass.
- % Is more preferably 5% by mass or more and 12% by mass or less, further preferably 5% by mass or more and 10% by mass or less, and 7% by mass or more and 10% by mass or less. Is particularly preferred.
- the liquid crystal composition of the present invention may further contain a compound represented by the formula (2.5) having a structure similar to that of the compound represented by the general formula (I-1-2).
- the compound represented by the formula (2.5) is preferably contained in an amount of 11% by mass or more and 15% by mass or more with respect to 100% by mass of the total mass of the liquid crystal composition of the present invention.
- the content is more preferably 23% by mass or more, further preferably 26% by mass or more, and particularly preferably 26 to 28% by mass.
- the compound represented by the general formula (I) is preferably a compound 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 (3.3) is 2% by mass to 40% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. Is preferred. More preferable content is, for example, 3% to 40% by mass, 4% to 40% by mass, 10% to 40% by mass, 12% to 40% by mass, 14% to 40% by mass.
- % By mass or less, 16% by mass to 40% by mass, 20% by mass to 40% by mass, 23% by mass to 40% by mass, 26% by mass to 40% by mass, 30% by mass to 40% by mass, 34 % By mass to 40% by mass, 37% by mass to 40% by mass, or 3% by mass to 4% by mass, 3% by mass to 10% by mass, 3% by mass to 12% by mass, 3% by mass or more 14 mass% or less, 3 mass% or more and 16 mass% or less, 3 mass% or more and 20 mass% or less, 3 mass% or more and 23 mass% or less, 3 mass% or more and 26 mass% or less, 3 mass% or more and 30 mass% or less, 3% by mass or more 34
- the amount percent include 37 wt% or less 3 wt% or more.
- the compound represented by the general formula (I) is preferably a compound 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 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 effect is high when the content is set to be large.
- the response speed is important, the effect is high when the content is set low.
- 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 more preferable that it is a compound represented by.
- the content of the compound represented by the formula (4.3) is preferably 2% by mass to 30% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention, and is preferably 4% by mass to 30%. More preferably, it is 6 mass% or more and 30 mass% or less, More preferably, it is 8 mass% or more and 30 mass% or less, It is 10 mass% or more and 30 mass% or less. More preferably, it is more preferably 12% by mass or more and 30% by mass or less, more preferably 14% by mass or more and 30% by mass or less, and more preferably 16% by mass or more and 30% by mass or less. It is more preferably 18% by mass or more and 25% by mass or less, more preferably 20% by mass or more and 24% by mass or less, and particularly preferably 22% by mass or more and 23% by mass or less. .
- 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.
- 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 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 a compound represented by the formula (5.4).
- the content of the compound represented by the formula (5.4) is preferably 2% by mass or more and 30% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. More preferable content is, for example, 4% by mass to 30% by mass, 6% by mass to 30% by mass, 8% by mass to 30% by mass, 10% by mass to 30% by mass, 12% by mass to 30% by mass.
- 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.
- 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) is more preferable.
- the content of the compound represented by the formula (6.6) is preferably 2% by mass or more and 30% by mass or less, and preferably 4% by mass or more and 30% by mass with respect to the total mass of the liquid crystal composition of the present invention.
- % Or more 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.
- the liquid crystal composition of the present invention further contains compounds represented by formulas (6.7) to (6.9) having a structure similar to that of the compound represented by formula (I-5). You can also.
- the content of the compound represented by the formula (6.7) is preferably 2% by mass or more with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention, and 3% by mass or more. It is further preferable to contain 5% by mass or more, and it is particularly preferable to contain 7% by mass or more.
- 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, preferably 2% by mass or more and 30% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- it is 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. Is more preferably 8% by mass or more and 30% by mass or less, more preferably 10% by mass or more and 30% by mass or less, and more preferably 12% by mass or more and 30% by mass or less. It is more preferably 15% by mass or more and 25% by mass or less, more preferably 18% by mass or more and 24% by mass or less, and particularly preferably 21% by mass or more and 22% by mass or less.
- 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
- R 16 and R 17 each independently represents an alkenyl group having 2 to 5 carbon atoms
- required such as solubility at low temperature, transition temperature, electrical reliability, birefringence
- 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 It can be adjusted as appropriate according to the required performance.
- the content of the compound represented by the general formula (I-8) is preferably 5% by mass or more and 65% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. More preferably, it is 10 mass% or more and 65 mass% or less, More preferably, it is 15 mass% or more and 65 mass% or less, More preferably, it is 20 mass% or more and 65 mass% or less, 25 mass% or more More preferably, it is 65 mass% or less, More preferably, it is 30 mass% or more and 65 mass% or less, More preferably, it is 35 mass% or more and 65 mass% or less, 40 mass% or more and 65 mass% or less More preferably, it is 45 mass% or more and 60 mass% or less, More preferably, it is 50 mass% or more and 58 mass% or less, 55 mass% or more and 56 mass% or less Rukoto is particularly preferred.
- 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 more preferable.
- the compound represented by general formula (L) is a compound represented, for example 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-).
- limiting in particular in the kind of compound which can be combined It combines according to performance requested
- 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, for example, a compound represented by the general formula (II-2).
- 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 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 compound represented by formula (11.1) is contained, ) Or a compound represented by the formula (11.1) and a compound represented by the formula (11.2), or a compound represented by the formula ( All compounds represented by formula (11.1) to formula (11.3) may be included.
- the content of the compound represented by the formula (11.1) or the formula (11.2) is 3% by mass or more and 40% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- It is preferably 5% by mass or more and 35% by mass or less, more preferably 5% by mass or more and 30% by mass or less, and particularly preferably 5% by mass or more and 25% by mass or less.
- the content is most preferably 20% by mass or less. Of the most preferable ranges, for example, 8% by mass or more and 20% by mass or less, 12% by mass or more and 20% by mass or less, 15% by mass or more and 20% by mass or less, 5% by mass or more and 18% by mass or less, 5% by mass or more. 15 mass% or less, 5 mass% or more and 12 mass% or less, 5 mass% or more and 10 mass% or less, 5 mass% or more and 8 mass% or less are mentioned.
- the content of the compound represented by the formula (11.2) is preferably 3% by mass or more and 40% by mass or less, and preferably 3% by mass or more and 35% 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 30% by mass or less, further preferably 3% by mass or more and 25% by mass or less, and further preferably 3% by mass or more and 20% by mass or less.
- the most preferable ranges for example, 3 mass% to 12 mass%, 3 mass% to 10 mass%, 3 mass% to 8 mass%, 3 mass% to 6 mass%, 6 mass% to 15 mass%.
- 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 13% by mass to 45% by mass, more preferably 19% by mass to 40% by mass, and still more preferably 24% by mass to 35% by mass.
- the compound represented by the general formula (II) is preferably, for example, a compound represented by the general formula (II-3).
- 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.
- the content of the compound represented by the general formula (II-3) is preferably 2 to 45% by mass with respect to the total amount of 100% by mass of the liquid crystal composition of the present invention, and more preferable content
- the amount 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%.
- 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 3% by mass or more and 40% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- it is 5 to 40% by mass, more preferably 7 to 40% by mass, more preferably 9 to 40% by mass, and 11% by mass.
- the content of the compound represented by the 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, and 5% by mass or more and 40% by mass.
- % Is more preferably 8% by mass or more and 40% by mass or less, further preferably 10% by mass or more and 40% by mass or less, and more preferably 12% by mass or more and 40% by 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 15% by mass or more and 45% by mass or less, more preferably 19% by mass or more and 45% by mass or less, further preferably 24% by mass or more and 40% by mass or less, and 30% by mass or more and 35% by mass or less. It is particularly preferable that the content is not more than mass%.
- 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, and 0.1% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. % To 1% by mass, more preferably 0.2% to 0.5% by mass.
- 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, for example, a compound represented by the general formula (II-3-1).
- 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 7 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 more preferable that it is a compound represented by.
- the content of the compound represented by the formula (13.3) or the compound represented by the formula (13.4) is preferably 4% by mass or more and 7% by mass with respect to 100% by mass of the liquid crystal composition of the present invention. It is below mass%.
- the compound represented by the general formula (II) is preferably, for example, a compound represented by the general formula (II-4).
- 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-4) is preferably not less than 15% by mass and not more than 15% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. % Or less, more preferably 3% by mass or more and 15% by mass or less, more preferably 4% by mass or more and 12% by mass or less, and more preferably 5% by mass or more and 7% by mass or less. Is particularly preferred.
- the compound represented by the general formula (II-4) is preferably, for example, a compound represented by the formula (14.1) to the formula (14.5), and in particular, the formula (14.2) and More preferably, it is a compound represented by the formula (14.5).
- 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 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 content of the compound represented by the formula (17.3) is preferably 5% by mass or more and 7% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- the compound represented by the general formula (L) is preferably a compound 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, for example, a compound represented by the general formula (IV-1).
- 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 18% to 40% by mass. In still another embodiment of the present invention, the content is 21% to 40% by mass. In still another embodiment of the present invention, the content is 5% to 10% 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, for example, a compound represented by the general formula (IV-2).
- 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 represented by the general formula (IV-2) is preferably 0.5 to 40% by mass with respect to 100% by mass of the total amount 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 the 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 further select one compound from the compounds represented by formula (19.9) or (19.10) and combine them as appropriate.
- 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.
- the total mass is preferably 3% by mass or more and 25% by mass or less, more preferably 5% by mass or more and 20% by mass or less, further preferably 5% by mass or more and 15% by mass or less, and more preferably 7% by mass or more and 10% by 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—, and X 51 and X 52 each independently represent a fluorine atom or a hydrogen atom. Represents.
- limiting in particular in the kind of compound which can be combined It combines according to performance requested
- 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).
- 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 content of the compound represented by the general formula (V-1-1) is preferably 1% by mass or more and 15% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. More preferably, it is contained in an amount of not less than 15% and not more than 15% by mass, more preferably not less than 3% by mass and not more than 10% by mass, particularly preferably not less than 4% by mass and not more than 8% by mass.
- 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). More preferably, the compound is
- the content of the compound represented by the formula (20.2) is preferably 3% by mass or more and 5% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- 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 content of the compound represented by the general formula (V-1-2) is preferably 1% by mass or more and 15% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. More preferably, it is contained in an amount of not less than 15% and not more than 15% by mass, more preferably not less than 3% by mass and not more than 10% by mass, and particularly preferably not less than 4% by mass and not more than 8% by mass.
- 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). More preferably, the compound is The content of the compound represented by the formula (21.1) is preferably 4% by mass or more and 5% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- 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 content of the compound represented by the general formula (V-1-3) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention.
- the content is more preferably 15% by mass or less, further 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-1-3) is a compound represented by the formula (22.1) to the formula (22.3). It is more 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.
- 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) and / or Or it is more preferable that it is a compound represented by Formula (23.2).
- 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), and the formula (24.1) and / or Or it is more preferable that it is a compound represented by Formula (24.2).
- the compound represented by the general formula (V) is preferably a compound represented by the general formula (V-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.
- 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 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 (V-3) is preferably 2% by mass or more and 16% by mass or less, preferably 4% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. More preferably, it is contained in an amount of not less than 16% by mass and not more than 16% by mass, more preferably not less than 7% by mass and not more than 13% by mass, particularly preferably not less than 8% by mass and not more than 11% by mass.
- the compound represented by the general formula (V-3) is preferably a compound represented by the formula (25.1) to the formula (25.3).
- the liquid crystal composition of the present invention may further contain at least one compound represented by the general formula (VI).
- R 61 and R 62 each independently represent a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms, or a linear alkenyl group having 2 to 10 carbon atoms.
- R 61 and R 62 each independently represent a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms, or a linear alkenyl group having 2 to 10 carbon atoms.
- the content of the compound represented by the general formula (VI) is preferably 35% by mass or less, more preferably 25% by mass or less, and more preferably 15% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. Further preferred.
- the liquid crystal composition of the present invention can further contain at least one compound represented by the general formula (VII).
- R 71 and R 72 each independently represents a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms, or a linear alkenyl group having 4 to 10 carbon atoms).
- the content of the compound represented by the general formula (VII) is preferably 35% by mass or less, more preferably 25% by mass or less, and more preferably 15% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. Further preferred.
- the liquid crystal composition of the present invention preferably contains a compound represented by the 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 compound represented by general formula (i) and 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. 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 is preferred.
- R M1 represents a linear alkyl group having 1 to 5 carbon atoms or a linear carbon atom number when the ring structure to which R M1 is bonded is a saturated ring structure such as cyclohexane, pyran, or dioxane.
- Preferred are an alkoxy group having 1 to 4 and a straight-chain alkenyl group having 2 to 5 carbon atoms.
- the compound represented by the general formula (M) preferably has no chlorine atom in the molecule.
- the content of the compound represented by the general formula (M) containing a chlorine atom is preferably 3% or less, preferably 1% or less with respect to 100% by mass of the total amount of the liquid crystal composition. Preferably, it is 0.5% or less, and it is preferable not to contain substantially. Note that “substantially not contained” means that only a compound containing a chlorine atom is unintentionally mixed into the liquid crystal composition, such as a compound generated as an impurity during the production of the compound.
- 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 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.
- 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 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, more preferably 1% by mass to 30% by mass, more preferably 1% by mass to 20% by mass, and more preferably 2% by mass to 15% by mass. It is more preferably 2% by mass or more and 10% by mass or less, and particularly preferably 2% by mass or more and 9% by mass or less.
- 2% by mass to 7% by mass for example, 2% by mass to 6% by mass, 2% by mass to 5% by mass, 2% by mass to 4% by mass, 2% by mass to 3% by mass.
- % Or less, 3% to 9% by weight, 4% to 6% by weight, 4% to 9% by weight, 5% to 9% by weight, 6% to 9% by weight. It is done.
- 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 2% by mass or more and 40% by mass or less, more preferably 4% by mass or more and 30% by mass or less, still more preferably 4% by mass or more and 20% by mass or less, and particularly preferably 4% by mass or more and 15% by mass or less. preferable. Among particularly preferable ranges, for example, 4% by mass to 15% by mass, 4% by mass to 12% by mass, 4% by mass to 10% by mass, 4% by mass to 8% by mass, 4% by mass to 6% by mass. % Or less, 6% by mass or more and 15% by mass or less, 8% by mass or more and 15% by mass or less, 10% by mass or more and 15% by mass or less, and 12% by mass or more and 15% by mass or less.
- the total content of the compound represented by the formula (26.1) and the compound represented by the formula (26.2) is preferably 5 to 40% by mass with respect to the total mass of the liquid crystal composition of the present invention. 10 to 30% by mass is more preferable, 10 to 25% by mass is still more preferable, and 10 to 20% by mass is particularly preferable.
- 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 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. It is preferably 3% by mass or more and 25% by mass or less, more preferably 4% by mass or 20% by mass or less, and preferably 5% by mass or more and 15% by mass or less, and 7% by mass. % To 10% by mass is more preferable.
- 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). More preferably, it is a compound.
- 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 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, for example, a compound represented by the general formula (IX). However, the compound represented by general formula (ii) 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 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 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.
- 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) is preferably a preferable upper limit depending on the embodiment in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. There is a lower limit.
- the lower limit of the content of the compound is preferably 1%, more preferably 5%, and the upper limit of the content of the compound is preferably 25% with respect to the total mass of the liquid crystal composition of the present invention. % Is more preferable, 20% is more preferable, and 19% is particularly preferable.
- the lower limit of the content of the compound with respect to the total mass is preferably 1%, preferably 2%, more preferably 5%, still more preferably 6%
- the upper limit of the content of the compound with respect to the total mass is preferably 25%, more preferably 20%, still more preferably 15%, still more preferably 12%, particularly preferably 10%, and most preferably 9%.
- the lower limit of the total content of the two compounds relative to the total mass is preferably 8%, more preferably 10%, still more preferably 13%, and the total
- the upper limit of the total content of the two compounds relative to the mass is preferably 25%, more preferably 22%, more preferably 20%, and still more preferably 19%.
- the content of the compound with respect to the total mass is 1 to 25% by mass in one embodiment, 2 to 20% by mass in another embodiment, 4 to 10% by mass in yet another embodiment, and yet another implementation. 10-30% by weight in the form, 14-20% by weight in yet another embodiment, 16-20% by weight in yet another embodiment, and 21-40% by weight in yet another embodiment. Further, for example, the content of the compound is 1 to 40% by mass in one embodiment, 1 to 35% by mass in another embodiment, and still another implementation with respect to the total mass of the liquid crystal composition of the present invention. 1 to 30% by weight in a form, 1 to 25% by weight in yet another embodiment, 1 to 10% by weight in still another embodiment, 1 to 7% by weight in still another embodiment, or still further In the embodiment, the content is 1 to 5% by mass.
- 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), and the formula (28.3) and / or Or it is more preferable that it is a compound represented by Formula (28.5).
- the content of the compound represented by the formula (28.3) is 1% by mass to 30% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. Is preferred. More preferable examples of the content are 2% by mass or more and 20% by mass or less, 2% by mass or more and 15% by mass or less, 2% by mass or more and 12% by mass or less, 2% by mass or more and 9% by mass or less, 2% by mass or more and 5% by mass. % By mass or less, or 4% by mass to 20% by mass, 6% by mass to 20% by mass, 8% by mass to 20% by mass, 10% by mass to 20% by mass, 15% by mass to 20% by mass .
- the content of the compound represented by the formula (28.5) is determined in consideration of solubility at low temperatures, transition temperature, electrical reliability, and the like.
- the total mass is preferably 3% by mass or more and 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, further preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass or less. % Or less is particularly preferable.
- 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.
- 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 preferably 1% by mass or more and 30% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- % To 30% by mass is more preferable, 8% to 30% by mass is more preferable, 10% to 25% by mass is further preferable, 14% to 22% by mass is further preferable, and 16% by mass or more is preferable. 20 mass% or less is 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) and / or Or it is more preferable that it is a compound represented by Formula (29.4).
- 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.
- the compound represented by the general formula (IX-2) is preferably a compound represented by the general formula (IX-2-1).
- 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.
- 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-2-1) is preferably an upper limit preferable for each embodiment in consideration of properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. There is a value and a lower limit.
- 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 of the compound is 2 to 40% by mass.
- the content of the compound is 4 to 40% by mass.
- the content of the compound is 10 to 10%.
- the content of the compound is 14 to 40% by mass.
- the content of the compound is 16 to 40% by mass.
- the content of the compound is 14 to 40% by mass.
- the content of the compound is 21 to 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 20% by mass. In still another embodiment, the content of the compound is 1 to 10% by mass. In still another embodiment, the content of the compound is 1 to 20% by mass. The content of the compound is 1 to 7% by mass, and in still another embodiment, the content of the compound is 1 to 5% by mass.
- the compound represented by the general formula (IX-2-1) is preferably a compound represented by the formula (30.1) to the formula (30.4), from the formula (30.1) to the formula A compound represented by (30.2) is more preferable.
- the compound represented by the general formula (IX-2) is preferably a compound represented by the general formula (IX-2-2).
- 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.
- 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 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. In addition, for example, in one embodiment of the present invention, 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.
- 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 (31.1) to the formula
- the compound represented by (31.4) is more preferable.
- the compound represented by the general formula (IX-2) is preferably a compound represented by the general formula (IX-2-3).
- 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-2-3) is preferably 1% by mass or more and 30% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. % To 20% by mass is more preferable, 6% to 15% by mass is more preferable, and 8% to 10% by mass is more preferable.
- the compound represented by the general formula (IX-2-3) is preferably a compound represented by the formula (32.1) to the formula (32.4), and the formula (32.2) and / or Or it is more preferable that it is a compound represented by Formula (32.4).
- 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.
- 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 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. In still another embodiment, the content of the compound is 12 to 45% by mass. In still another embodiment, the content of the compound is 21 to 45% by mass. In still another embodiment, 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. Also, for example, in one embodiment of the present invention, 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. In still another embodiment, the content of the compound is 4 to In still another embodiment, the content of the compound is 4 to 13% by mass. In still another embodiment, the content of the compound is 4 to 9% by mass. In still another embodiment, 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 (34.7), 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 the general formula (IX) is preferably a compound represented by the general formula (IX-3).
- 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.
- the compound represented by the general formula (IX-3) is preferably a compound represented by the general formula (IX-3-1).
- 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-3-1) is preferably 3% by mass or more and 30% by mass or less, and 7% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. % To 30% by mass is more preferable, 13% to 20% by mass is more preferable, and 15% to 18% by mass is particularly preferable.
- the compound represented by the general formula (IX-3-1) is preferably a compound represented by the formula (35.1) to the formula (35.4), and the formula (35.1) and / or Or it is more preferable that it is a compound represented by Formula (35.2).
- the compound represented by the general formula (i) is preferably a compound represented by the general formula (X).
- the compound represented by general formula (i) and 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.
- a fluorine atom there is no restriction
- 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 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). However, the compound represented by general formula (i) is excluded.
- 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.
- 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 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.
- 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 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%. 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 9 to 30% by mass. In still another embodiment, 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) used in the liquid crystal composition of the present invention is preferably a compound represented by the general formula (X-2). However, the compounds represented by the general formulas (i) and (ii) are excluded.
- 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 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.
- 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 3% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 16% by mass or less, further preferably 5% by mass or more and 12% by mass or less, and particularly preferably 5% by mass or more and 10% by mass or less. .
- 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 35% by mass or less with respect to the total mass of the liquid crystal composition of the present invention. It is more preferably 2% by mass or less and 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, more preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass. % Or more, more preferably 4% by mass or more and 8% by mass or less, and particularly preferably 4% by mass or more and 6% 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 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).
- the compounds represented by the general formulas (i) and (ii) are excluded.
- X 102 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 4 or 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- 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.
- 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 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.
- 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). In particular, it is more preferable to contain a compound represented by the formula (42.3).
- 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-4-2).
- 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-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 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 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).
- 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.
- 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 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.
- 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). In particular, it is more preferable to contain a compound represented by the formula (43.2).
- a compound represented by the general formula (X′-7) similar to the compound represented by the general formula (X) may be contained in the liquid crystal compound of the present invention.
- 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).
- 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-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.
- 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-6) 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 lower limit of the content of the compound is preferably 1%, more preferably 2%, and the upper limit of the content of the compound is preferably 25% with respect to the total mass of the liquid crystal composition of the present invention. % Is more preferable, 18% is more preferable, and 16% is particularly preferable.
- the lower limit of the content of the compound with respect to the total mass is preferably 1%, more preferably 2%, still more preferably 3%, particularly preferably 4%
- the upper limit of the content of the compound with respect to the total mass is preferably 15%, more preferably 12%, still more preferably 10%, particularly preferably 8%, and most preferably 7%.
- the lower limit of the total content of the two compounds relative to the total mass is preferably 5%, more preferably 7%, still more preferably 10%, and the total
- the upper limit of the total content of the two compounds relative to the mass is preferably 25%, more preferably 20%, still more preferably 18%, still more preferably 16%, still more preferably 13%, and particularly preferably 10%. 9% is most preferable.
- the content of the compound with respect to the total mass of the liquid crystal composition of the present invention is 3 to 30% by mass, in another embodiment 3 to 25% by mass, and yet another implementation. 3-10% by weight in a form, 3-7% by weight in yet another embodiment, 5-10% by weight in yet another embodiment, 11-20% by weight in yet another embodiment, and yet another In this embodiment, it is 14 to 18% by mass. In still another embodiment, the content is 18 to 25% by mass.
- the content of the compound is 1 to 30% by mass, in another embodiment 1 to 20% by mass, and further to the total mass of the liquid crystal composition of the present invention.
- the content of the compound is 1 to 30% by mass, in another embodiment 1 to 20% by mass, and further to the total mass of the liquid crystal composition of the present invention.
- 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).
- 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.
- the total mass 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, further preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass. % Or less is particularly preferable.
- 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.
- the total mass 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, further preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass. % Or less is particularly preferable.
- 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 Considering reliability and the like, it is preferably 5% by mass or more and 45% by mass or less, more preferably 7% by mass or more and 25% by mass or less, and more preferably 7% by mass or more with respect to the total mass of the liquid crystal composition of the present invention. 20 mass% or less is more preferable. Among particularly preferable ranges, for example, 7% by mass to 15% by mass, 7% by mass to 12% by mass, 7% by mass to 10% by mass, 10% by mass to 15% by mass, 12% by mass to 15% 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-7).
- 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 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 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).
- the compound represented by the general formula (M) 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 11 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) includes 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. There is.
- 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. 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 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 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 11 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the 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 5% 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 it is more preferable to contain a compound represented by formula (45.2).
- 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 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, further preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass. % Or less is particularly preferable.
- particularly preferable ranges for example, 3% by mass to 10% by mass, 3% by mass to 8% by mass, 3% by mass to 6% by mass, 3% by mass to 4% by mass, 4% by mass to 10% by mass. % Or less, 6 mass% or more and 10 mass% or less, 8 mass% or more and 10 mass% or less.
- the content of the compound represented by the formula (45.3) is determined in consideration of solubility at 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% by mass or more and 20% by mass or less, further preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass. % Or less is particularly preferable.
- particularly preferable ranges for example, 3% by mass to 10% by mass, 3% by mass to 8% by mass, 3% by mass to 6% by mass, 3% by mass to 4% by mass, 4% by mass to 10% by mass. % Or less, 6 mass% or more and 10 mass% or less, 8 mass% or more and 10 mass% or less.
- 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 3% by mass or more and 20% by mass or less, further preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass. % Or less is particularly 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.
- 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 (M) is preferably a compound represented by the general formula (XII).
- X 121 to X 126 each independently represents a fluorine atom or a hydrogen atom, and R 12 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or 1 to 4 represents an alkoxy group, and Y 12 represents a fluorine atom or —OCF 3.
- R 12 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 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 12 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- R 12 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XII-1) is preferably 1% by mass or more and 15% by mass or less, preferably 2% by mass or more with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. 10 mass% or less is more preferable, 3 mass% or more and 8 mass% or less are more preferable, and 4 mass% or more and 6 mass% or less are especially preferable.
- 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).
- the compound represented by the general formula (XII) is preferably a compound represented by the general formula (XII-2).
- R 12 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- R 12 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XII-2) is preferably 1% by mass or more and 20% by mass or less, preferably 3% by mass or more with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. 20 mass% or less is more preferable, 4 mass% or more and 17 mass% or less are more preferable, 6 mass% or more and 15 mass% or less are more preferable, and 9 mass% or more and 13 mass% or less are especially 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).
- the compound represented by the general formula (M) is preferably a compound represented by the following general formula (XIII). However, the compounds represented by the general formulas (i) and (ii) are excluded.
- X 131 to X 135 each independently represent a fluorine atom or a hydrogen atom, and R 13 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, and Y 13 represents a fluorine atom or —OCF 3.
- R 13 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 the liquid crystal composition of the present invention is used for a liquid crystal display device having a small cell gap, it is preferable to increase the content of the compound represented by the general formula (XIII). In addition, 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 (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 13 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the compound represented by the 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 (M) is preferably a compound selected from the group of compounds represented by the general formula (XIV). However, the compounds represented by the general formulas (i) and (ii) are excluded.
- R 14 represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkoxy group having 1 to 7 carbon atoms
- 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) is 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. There is.
- 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) is preferably a compound represented by the general formula (XIV-1).
- R 14 represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkoxy group having 1 to 7 carbon atoms
- Y 14 represents a fluorine atom, a chlorine atom, or —OCF 3
- 1 type to 3 types in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, etc.
- the compound represented by the general formula (XIV-1) is preferably a compound represented by the general formula (XIV-1-1).
- R 14 represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkoxy group having 1 to 7 carbon atoms.
- the content of the compound represented by the general formula (XIV-1-1) is preferably 2% by mass or more, more preferably 3% by mass or more with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. 7 mass% or more is more preferable, 10 mass% or more is further more preferable, and 18 mass% or more is especially preferable.
- the maximum ratio is preferably limited to 30% by mass or less, more preferably 27% by mass or less, and more preferably 24% by mass or less. , Less than 21% by mass is particularly preferable.
- the compound represented by the general formula (XIV-1-1) is specifically preferably a compound represented by the formula (51.1) to the formula (51.4). It is more preferable to contain the compound represented by this.
- the compound represented by the general formula (XIV-1) is preferably a compound represented by the general formula (XIV-1-2).
- R 14 represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkoxy group having 1 to 7 carbon atoms.
- the content of the compound represented by the general formula (XIV-1-2) is preferably 1% by mass or more and 15% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. It is more preferably 13% by mass or less, further preferably 5% by mass or more and 11% by mass or less, and particularly preferably 7% by mass or more and 9% by mass or less.
- 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 more 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). However, the compound represented by (i) is excluded.
- R 14 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
- X 141 to X 144 each independently represents fluorine.
- Y 14 represents a fluorine atom, a chlorine atom or —OCF 3.
- 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-2-1).
- R 14 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XIV-2-1) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. % To 13% by mass is more preferable, 5% to 11% by mass is more preferable, and 7% to 9% by mass is particularly preferable.
- the compound represented by the general formula (XIV-2-1) is specifically preferably a compound represented by the formula (53.1) to the formula (53.4), among which the formula (53. It is more preferable to contain the compound represented by 4).
- the compound represented by the general formula (XIV-2) is preferably a compound represented by the general formula (XIV-2-3).
- R 14 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound represented by the general formula (XIV-2-3) is preferably 5% by mass or more and 30% by mass or less, and 9% by mass with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention. 27 mass% or less is more preferable, 12 mass% or more and 24 mass% or less is further more preferable, and 12 mass% or more and 20 mass% or less is especially preferable.
- 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 more 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 14 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- R 14 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
- the content of the compound 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 more preferable to contain the compound represented by 1), Formula (56.2), and Formula (56.4).
- the content of the compound represented by the formula (56.2) is preferably 5% by mass or more and 10% by mass or less with respect to 100% by mass of the total amount of the liquid crystal composition of the present invention.
- the compound used in the present invention does not have a peracid (—CO—OO—) structure in the molecule.
- a compound having a carbonyl group 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 carbonyl group.
- a compound in which a chlorine atom is substituted 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
- 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.
- Z 201 is preferably a single bond.
- the ring structure between Sp 201 and Sp 202 is specifically preferably the structure described below.
- the following formulas (XXa-1) to (XXa-5) are preferably represented, It is more preferable to represent the formula (XXa-3) from (XXa-1), and it is particularly preferable to represent the formula (XXa-1).
- both ends shall be bonded to Sp 201 or Sp 202.
- the polymerizable compounds containing these skeletons are optimal for PSA-type liquid crystal display elements because of the alignment regulating power after polymerization, and a good alignment state can be obtained, so that display unevenness is suppressed or does not occur at all.
- the general formula (XX-1) to the general formula (XX-4) are particularly preferable, and the 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 accelerate the polymerization.
- the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzyl ketals, acylphosphine oxides, and the like.
- the liquid crystal composition in the present invention can further contain a compound represented by the general formula (Q).
- RQ represents a straight-chain alkyl group or a branched-chain alkyl group having 1 to 22 carbon atoms, and one or more CH 2 groups in the alkyl group are —O—so that oxygen atoms are not directly adjacent to each other.
- MQ represents a trans-1,4-cyclohexylene group, a 1,4
- the compound represented by the general formula (Q) is preferably a compound represented by the following general formula (Qa) to general formula (Qd).
- R Q1 is preferably a linear or branched alkyl group having 1 to 10 carbon atoms
- R Q2 is preferably a linear or branched alkyl group having 1 to 20 carbon atoms
- R Q3 is A straight-chain alkyl group having 1 to 8 carbon atoms, a branched-chain alkyl group, a straight-chain alkoxy group or a branched-chain alkoxy group is preferred
- L Q is preferably a straight-chain alkylene group or branched-chain alkylene group having 1 to 8 carbon atoms.
- compounds represented by general formula (Qa) to general formula (Qd) compounds represented by general formula (Qc) and general formula (Qd) are more preferable.
- the compound represented by formula (Q) preferably contains one or two compounds, more preferably contains 1 to 5 compounds, and the content is 0.001. Is preferably 1 to 1% by mass, more preferably 0.001 to 0.1% by mass, and particularly preferably 0.001 to 0.05% by mass.
- 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. It is used in a liquid crystal display element that controls As liquid crystal display elements, AM-LCD (active matrix liquid crystal display element), TN (nematic liquid crystal display element), STN-LCD (super twisted nematic liquid crystal display element), OCB-LCD and IPS-LCD (in-plane switching liquid crystal display element) However, it 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.
- a pixel portion for a color filter can be created.
- a pixel electrode provided with an active element such as a TFT, a thin film diode, or a metal insulator metal specific resistance element may be provided on the substrate.
- substrate is made to oppose so that a transparent electrode layer may become inner side.
- the thickness of the obtained light control layer is 1 to 100 ⁇ m. More preferably, the thickness is 1.5 to 10 ⁇ m.
- a 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 include columnar spacers made of glass particles, plastic particles, alumina particles, a photoresist material, and the like.
- 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 normal vacuum injection method or an ODF method. Although it has a problem that leaves traces, in the present invention, it can be suitably used for a display element manufactured by using the 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 under 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.
- 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.
- the alternating electric field to be applied is preferably an alternating current having a frequency of 10 Hz to 10 kHz, more preferably a frequency of 60 Hz to 10 kHz, and the voltage is selected depending on a desired pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In a horizontal electric field type MVA mode liquid crystal display element, the pretilt angle is preferably controlled from 80 degrees to 89.9 degrees from the viewpoint of alignment stability and contrast.
- the temperature during irradiation is preferably within a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. Polymerization is preferably performed at a temperature close to room temperature, that is, typically 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 10 seconds to 3,600 seconds, and more preferably 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 a liquid crystal display element for PSA mode, IPS (in-plane switching) mode, FSS (fringe field switching) mode or ECB mode.
- FIG. 1 is a cross-sectional view showing a liquid crystal display element including two substrates facing each other, a sealing material provided between the substrates, and liquid crystal sealed in a sealing region surrounded by the sealing material. It is. Specifically, the TFT layer 102 and the pixel electrode 103 are provided on the first substrate 100, the backplane on which the passivation film 104 and the first alignment film 105 are provided, and the black matrix on the second substrate 200.
- the aspect of a liquid crystal display element is shown.
- 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.
- a plastic substrate it is preferable to provide a barrier film.
- 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 100 or the second substrate 200.
- the TFT layer 102 and the pixel electrode 103 are provided on the first substrate 100. These are manufactured by a normal array process.
- a backplane is obtained by providing a passivation film 104 and a first alignment film 105 thereon.
- a passivation film 104 (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 105 is a film having a function of aligning liquid crystals, and a polymer material such as polyimide is usually used in many cases.
- 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.
- the 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 202, a color filter 203, a planarization film 201, a transparent electrode 204, and a second alignment film 205 on a second substrate 200.
- the black matrix 202 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 the second substrate 200 provided with the barrier film 201 to form 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.
- the photoresist layer is peeled off and the colored layer is baked to complete the black matrix 202.
- a photoresist type pigment dispersion may be used. In this case, 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 202.
- the color filter 203 is prepared by a pigment dispersion method, an electrodeposition method, a printing method, a dyeing method, or the like.
- a pigment dispersion method as an example, a color resin liquid in which a pigment (for example, red) is uniformly dispersed is applied onto the second substrate 200, 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 the (red) color filter 203. There is no particular limitation on the color order to be created. Similarly, a green color filter 203 and a blue color filter 203 are formed.
- the transparent electrode 204 is provided on the color filter 203 (if necessary, an overcoat layer (201) is provided on the color filter 203 for surface flattening).
- the transparent electrode 204 preferably has a high transmittance, and preferably has a low electrical resistance.
- the transparent electrode 204 is formed by sputtering an oxide film such as ITO.
- a passivation film may be provided on the transparent electrode 204 for the purpose of protecting the transparent electrode 204.
- the second alignment film 205 is the same as the first alignment film 105 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, a polygon such as a quadrangle, etc., but considering the misalignment margin during the process, the horizontal cross section is a circle or A regular polygon is particularly preferred.
- 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.
- it is a synthetic resin (curable resin) from the viewpoint 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.
- a photocurable resin suitable for a photolithography method or a droplet discharge method As an example, a case where the columnar spacer is obtained by a photolithography method will be described. FIG.
- FIG. 2 is a diagram of an exposure process using a columnar spacer forming pattern formed on a black matrix as a photomask pattern.
- a resin solution for forming columnar spacers (not containing a colorant) is applied.
- the resin layer 402 is baked and cured.
- a photoresist is applied on this and prebaked.
- development is performed to pattern the resin layer.
- the photoresist layer is peeled off, and the resin layer is baked to complete columnar spacers (302, 0304 in FIG. 1).
- the formation position of the columnar spacer can be determined at a desired position by a 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 simultaneously.
- 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.
- a columnar spacer manufactured by a photolithography method in this way may be called a column spacer or a photo spacer.
- a negative water-soluble resin such as PVA-stilbazo photosensitive resin, a mixture of a polyfunctional acrylic monomer, an acrylic acid copolymer, a triazole initiator, or the like is used.
- a method using a color resin in which a colorant is dispersed in a polyimide resin there is a method using a color resin in which a colorant is dispersed in a polyimide resin.
- a spacer can be obtained from a known material according to the compatibility with the liquid crystal composition and the sealing material to be used.
- a seal material (301 in FIG. 1) is applied to the surface of the back plane that contacts the seal 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.
- synthetic fibers such as cellulose, polyamide and polyester, and inorganic materials such as glass and carbon can be appropriately selected.
- 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 composition is dropped onto 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 on which the sealing material is applied and the liquid crystal composition 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 60 ° 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 for 1.5 hours in an atmosphere at 150 ° C.
- Burn-in 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 720 hours and then the entire screen is uniformly displayed. went. ⁇ : No afterimage ⁇ : Even afterimage is very slight but acceptable level ⁇ : Afterimage is present and unacceptable level ⁇ : Afterimage is present
- Volatility / contamination of production equipment For evaluating the volatility of the liquid crystal material, 0.5 kg of the liquid crystal composition is put in a special container of a 1.0 L vacuum stirring and defoaming mixer, and the vacuum stirring and defoaming mixer is operated at a revolution speed of 12S -1 and a rotation speed of 6S -1 While degassing up to 5 kPa, the foaming of the liquid crystal material was visually observed. It was classified into the following four stages according to the time from the start of operation of the vacuum stirring defoaming mixer to the start of foaming. A: 2 minutes or more until foaming. The possibility of equipment contamination due to volatilization is low. ⁇ : 1 minute or more and less than 2 minutes until foaming.
- Process suitability is that the liquid crystal is dropped by 60 pL at a time using a constant volume metering pump 100000 times in the ODF process, and the following “0 to 100 times, 101 to 200 times, 201 to 300 times, ... 99901-100,000 times ”, the change in the amount of liquid crystal dropped 100 times each was evaluated in the following four stages.
- ⁇ Acceptable level even though there is a slight change
- ⁇ Unacceptable level with change (Yield deteriorated due to the occurrence of spots)
- ⁇ There is a change and it is quite inferior (liquid crystal leakage and vacuum bubbles are generated)
- Solubility at low temperature In order to evaluate the solubility at low temperature, after preparing the liquid crystal composition, 1 g of the liquid crystal composition was weighed in a 2 mL sample bottle, and the next was “ ⁇ 20 ° C. (1 hour) in a temperature-controlled test tank.
- Example 1 and Comparative Examples 1 to 3 Liquid crystal compositions having the compositions shown in Table 1 were prepared using the compounds shown below. In addition, Table 2 shows the physical property values of the obtained liquid crystal composition.
- Examples 2-4 Liquid crystal compositions having the compositions shown in Table 3 were prepared using the compounds shown below. In addition, Table 4 shows the physical property values of the obtained liquid crystal composition.
- Examples 5-7 Liquid crystal compositions having the compositions shown in Table 5 were prepared using the compounds shown below. In addition, Table 6 shows the physical property values of the obtained liquid crystal composition.
- Examples 8-10 Liquid crystal compositions having the compositions shown in Table 7 were prepared using the compounds shown below. In addition, Table 8 shows the physical property values of the obtained liquid crystal composition.
- Examples 11-13 Liquid crystal compositions having the compositions shown in Table 9 were prepared using the compounds shown below. In addition, Table 10 shows the physical properties of the liquid crystal composition obtained.
- the liquid crystal composition of Comparative Example 1 is different from Example 1 in that the compounds represented by (37.1) and (37.2) belonging to the general formula (i) The compounds are substituted with similar compounds represented by formulas (45.1) and (45.2).
- the liquid crystal composition of Comparative Example 1 has an equivalent ⁇ n and a large ⁇ , but the Tni decreases and the viscosity ( ⁇ , ⁇ 1) increases greatly.
- the liquid crystal composition of Comparative Example 2 has values of ⁇ n and ⁇ equivalent to those of the liquid crystal composition of Example 1 except for the compound represented by the general formula (ii). . However, the viscosity ( ⁇ , ⁇ 1, especially ⁇ 1) is greatly increased.
- the liquid crystal composition of Comparative Example 3 is different from Example 1 in that the compound represented by the formula (54.2) belonging to the general formula (i) has the same cyclic structure and ⁇ having a positive value.
- the compound represented by (56.2) is substituted.
- the viscosity ( ⁇ , ⁇ 1, especially ⁇ 1) is greatly increased.
- all of the liquid crystal compositions of Examples 2 to 13 had a small decrease in VHR after heating, and showed seizure, volatility, process suitability, and low temperature. Good results were obtained in solubility evaluation.
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Abstract
Description
垂直配向(VA)型ディスプレイではΔεが負の液晶組成物が用いられており、TN型、STN型又はIPS(イン・プレーン・スイッチング)型等の水平配向型ディスプレイではΔεが正の液晶組成物が用いられている。また、Δεが正の液晶組成物を電圧無印加時に垂直に配向させ、横電界を印加する事で表示する駆動方式も報告されており、Δεが正の液晶組成物の必要性はさらに高まっている。一方、全ての駆動方式において低電圧駆動、高速応答、広い動作温度範囲が求められている。すなわち、Δεが正で絶対値が大きく、粘度(η)が小さく、高いネマチック相-等方性液体相転移温度(Tni)が要求されている。また、Δnとセルギャップ(d)との積であるΔn×dの設定から、液晶組成物のΔnをセルギャップに合わせて適当な範囲に調節する必要がある。加えて液晶表示素子をテレビ等へ応用する場合においては高速応答性が重視されるため、回転粘性(γ1)の小さい液晶組成物が要求される。
すなわち、本発明は、以下のとおりである。
[1]液晶組成物は一般式(i)で表される化合物を1種以上含有し、一般式(ii)で表される化合物を1種以上含有する液晶組成物。
(式中、Ri1及びRii1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、該アルキル基中の水素原子はフッ素原子又は塩素原子によって置換されていてもよく、
ni1は1又は2を表し、
nii1は1、2又は3を表し、
Xi1は水素原子又はフッ素原子を表し、
Ai1及びAii1はそれぞれ独立してトランス-1,4-シクロヘキシレン基又は水素原子がフッ素原子又は塩素原子によって置換されていてもよい1,4-フェニレン基を表し、
Zi1及びZii1はそれぞれ独立して単結合、-CH=CH-、-C≡C-、-CH2CH2-、-COO-又は-OCO-を表すが、ni1が2を表す場合は、Ai1及びZi1はそれぞれ同一であっても異なっていてもよく、nii1が2又は3を表す場合は、Aii1及びZii1はそれぞれ同一であっても異なっていてもよい。)
[3]一般式(i)におけるni1が2である[1]または[2]に記載の液晶組成物。
[4]一般式(i)におけるni1が2であり、2つのAi1がトランス-1,4-シクロヘキシレン基である[1]~[3]のいずれかに記載の液晶組成物。
[5]一般式(i)におけるni1が2であり、2つのAi1が1,4-フェニレン基である[1]に記載の液晶組成物。
[6]一般式(ii)におけるZii1が単結合である[1]~[5]のいずれかに記載の液晶組成物。
[7]一般式(ii)におけるnii1が2である[1]~[6]のいずれかに記載の液晶組成物。
[8]一般式(ii)におけるnii1が2であり、2つのAii1のうち1つがトランス-1,4-シクロヘキシレン基であり、もう一つが1,4-フェニレン基である[1]~[7]のいずれかに記載の液晶組成物。
[9]一般式(ii)におけるnii1が2であり、2つのAii1がトランス-1,4-シクロヘキシレン基である[1]~[8]のいずれかに記載の液晶組成物。
[10]下記一般式(L)で表される化合物を含有する[1]~[9]のいずれか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)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が、ただし、一般式(i)で表される化合物及び一般式(ii)で表される化合物を除く。)
[11]下記一般式(M)で表される化合物を含有する[1]~[10]のいずれか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)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(i)で表される化合物及び一般式(ii)で表される化合物を除く。)
[12][1]~[11]のいずれかに記載の液晶組成物を使用した液晶表示素子。
[13][1]~[11]のいずれか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。
[14][1]~[11]のいずれかに記載の液晶組成物を使用したことを特徴とするOCBモード用液晶表示素子。
[15][1]~[11]のいずれかに記載の液晶組成物を使用したことを特徴とするECBモード用液晶表示素子。
[16][1]~[11]のいずれかに記載の液晶組成物を使用したことを特徴とするVAモード液晶表示素子。
[17][1]~[11]のいずれかに記載の液晶組成物を使用したことを特徴とするVA-IPSモード用液晶表示素子。
[18][1]~[11]のいずれか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。
[19][12]~[18]のいずれかに記載の液晶表示素子を使用したことを特徴とする液晶ディスプレイ。
尚、本発明において、化合物の誘電率異方性(Δε)とは、25℃において誘電率異方性が約0である液晶組成物に、当該化合物を添加して調製した組成物の誘電率異方性の測定値から外挿して求めた値である。
また、本発明においては、特に明記しない限り、「質量%」は「質量%」を表すものとする。
本発明の液晶組成物は、下記一般式(i)で表される化合物を必須成分として含有する。
(式中、Ri1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、該アルキル基中の水素原子はフッ素原子又は塩素原子によって置換されていてもよく、
ni1は1又は2を表し、
Xi1は水素原子又はフッ素原子を表し、
Ai1はそれぞれ独立してトランス-1,4-シクロヘキシレン基又は水素原子がフッ素原子又は塩素原子によって置換されていてもよい1,4-フェニレン基を表し、
Zi1は単結合、-CH=CH-、-C≡C-、-CH2CH2-、-COO-又は-OCO-を表すが、ni1が2を表す場合は、Ai1及びZi1はそれぞれ同一であっても異なっていてもよい。)
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、これらの化合物の中から1種~2種類以上含有することが好ましい。
一般式(XIII-2)で表される化合物の割合は、本発明の液晶組成物の総量100質量%に対して、好ましくは5質量%以上25質量%以下であり、好ましくは6質量%以上25質量%であり、好ましくは8質量%以上20質量%以下であり、好ましくは10質量%以上15質量%以下である。
組み合わせることができる化合物の種類に特に制限は無いが、これらの化合物の中から1種~2種類含有することが好ましい。
一般式(XIII-3)で表される化合物の割合は、本発明の液晶組成物の総量100質量%に対して、好ましくは2質量%以上20質量%以下であり、好ましくは4質量%以上20質量%であり、好ましくは9質量%以上17質量%であり、好ましくは11質量%以上14質量%以下である。
一般式(X-1-2)で表される化合物の含有量は、本発明の液晶組成物の総量に対して、0.5質量%以上、好ましくは1質量%以上、好ましくは2質量%以上である。
また、低温での溶解性、転移温度、電気的な信頼性などを考慮する場合、一般式(X-1-2)で表される化合物の含有量は、好ましくは20質量%以下であり、好ましくは16質量%以下であり、好ましくは12質量%以下であり、好ましくは10質量%である。これらの中でも、例えば、前記液晶組成物中における式(X-1-2)で表される化合物の含有量は、本発明の液晶組成物の総質量に対して、1~20質量%であることが好ましく、1~15質量%であることが好ましく、2~13質量%であることが好ましく、2~10質量%であることが好ましく、他の実施形態としては1~5質量%であることが好ましく、他の実施形態としては3~12質量%であることが好ましく、4~10質量%であることが好ましく、5~9質量%であることが好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましい。
一般式(X-3-1)で表される化合物の含有量は、本発明の液晶組成物の総量に対して、1質量%以上、好ましくは2質量%以上である。
また特に、低温での溶解性、転移温度、電気的な信頼性などを考慮すると、一般式(X-3-1)で表される化合物の含有量は、好ましくは0.5質量%以上10質量%以下であり、好ましくは1質量%以上5質量%以下であり、好ましくは1質量%以上4質量%以下であり、好ましくは1質量%以上3質量%以下である。
低温での溶解性、転移温度、電気的な信頼性などを考慮する場合、一般式(XIV-2-5)で表される化合物の含有量は、本発明の液晶組成物の総質量100質量%に対して、好ましくは5質量%以上25質量%以下であり、より好ましくは10質量%以上22質量%以下であり、より好ましくは13質量%以上18質量%以下であり、そしてさらに好ましくは13質量%以上15質量%以下である。
低温での溶解性、転移温度、電気的な信頼性などを考慮する場合、一般式(XIV-2-6)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して、好ましくは、5質量%以上25質量%以下であり、より好ましくは10質量%以上22質量%以下であり、より好ましくは15質量%以上20質量%以下であり、そしてさらに好ましくは15質量%以上17質量%以下である。
本発明の液晶組成物は、下記一般式(ii)で表される化合物を必須成分として含有する。
(式中、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く、該アルキル基中の水素原子はフッ素原子又は塩素原子によって置換されていてもよく、
nii1は1、2又は3を表し、
Aii1はトランス-1,4-シクロヘキシレン基又は水素原子がフッ素原子又は塩素原子によって置換されていてもよい1,4-フェニレン基を表し、
Zii1は単結合、-CH=CH-、-C≡C-、-CH2CH2-、-COO-又は-OCO-を表すが、nii1が2又は3を表す場合は、Aii1及びZii1はそれぞれ同一であっても異なっていてもよい。)
具体的には、一般式(ii)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、好ましくは2質量%以上25質量以下、より好ましくは5質量%以上20質量以下、そしてさらに好ましくは7質量%以上15質量以下である。
一般式(IX-2-4)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、1質量%以上30質量%以下であることが好ましく、3質量%以上20質量%以下がより好ましく、6質量%以上15質量%以下がさらに好ましく、8質量%以上10質量%以下が特に好ましい。
式(33.1)で表される化合物の含有量は、本発明の液晶組成物の総量に対して、3質量%以上、好ましくは5質量%以上、より好ましくは7質量%以上である。
また、低温での溶解性、転移温度、電気的な信頼性などを考慮する場合、式(33.1)で表される化合物の含有量は、好ましくは20質量%以下であり、より好ましくは16質量%以下であり、より好ましくは12質量%以下であり、そしてさらに好ましくは10質量%である。これらの中でも、例えば、前記液晶組成物中における式(33.1)で表される化合物の含有量は、本発明の液晶組成物の総質量に対して、3~20質量%であることが好ましく、5~16質量%であることが好ましく、5~12質量%であることが好ましく、7~10質量%であることが好ましい。
一般式(XIV-2-2)で表される化合物の含有量は、本発明の液晶組成物の総量に対して、3質量%以上、好ましくは5質量%以上、より好ましくは6質量%以上である。
また、低温での溶解性、転移温度、電気的な信頼性などを考慮する場合、一般式(XIV-2-2)で表される化合物の含有量は、好ましくは30質量%以下であり、より好ましくは25質量%以下であり、より好ましくは20質量%以下であり、より好ましくは18質量%以下であり、より好ましくは16質量%以下であり、より好ましくは15質量%以下であり、より好ましくは13質量%以下であり、より好ましくは11質量%以下であり、そしてさらに好ましくは8質量%である。
一般式(XIV-2-2)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して、2質量%以上30質量%以下であることが好ましく、5質量%以上25質量%以下がより好ましく、5質量%以上20質量%以下がさらに好ましく、6質量%以上18質量%以下がさらに好ましい。
本発明の液晶組成物において、式(54.2)で表される化合物の含有量は、本発明の液晶組成物の総質量に対して5質量%以上35質量%以下であることが好ましく、5質量%25質量%以下であることがより好ましく、5質量%以上22質量%以下であることがより好ましく、別の実施形態としては3質量%以上15質量%以下であることがより好ましく、5質量%以上12質量%以下であることが好ましく、別の実施形態としては10質量%以上20質量%以下であることが好ましく、13質量%以上17質量%以下であることが好ましい。
また、本発明の液晶組成物において、式(54.4)で表される化合物の含有量は、本発明の液晶組成物の総質量に対して2質量%以上10質量%以下であることが好ましく、3質量%8質量%以下であることがより好ましく、4質量%以上6質量%以下であることがより好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましい。
(式中、R14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す。)
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、一般式(XIV-3)で表される化合物の含有量は、本発明の液晶組成物の総量に対して1質量%以上15質量%以下であることが好ましく、4質量%以上15質量%以下がより好ましく、4質量%以上13質量%がさらに好ましく、4質量%以上11質量%以下がより好ましく、4質量%以上9質量%以下が特に好ましい。
一般式(i)で表される化合物及び一般式(ii)で表される化合物は合計で2種又は3種以上を組み合わせて使用することができ、式(37.2)で表される化合物及び式(33.1)で表される化合物の組み合わせ、式(37.2)で表される化合物及び式(54.2)で表される化合物の組み合わせ、式(37.2)で表される化合物、式(54.2)で表される化合物及び式(54.4)で表される化合物の組み合わせ、式(41.2)で表される化合物、式(54.1)で表される化合物及び式(54.2)で表される化合物の組み合わせが好ましい。
一般式(i)で表される化合物及び一般式(ii)で表される化合物の合計の含有量は、本発明の液晶組成物の総質量に対して5質量%以上25質量%以下であることが好ましく、7質量%以上23質量%以下であることが好ましく、9質量%以上20質量%以下であることが好ましく、10質量%以上19質量%以下であることが好ましい。
本発明の液晶組成物は、一般式(L)で表される化合物を少なくとも1種類以上含有することが好ましい。
OLは0、1、2又は3を表し、
BL1、BL2及びBL3はそれぞれ独立して
(a) 1,4-シクロヘキシレン基(この基中に存在する1個の-CH2-又は隣接していない2個以上の-CH2-は-O-に置き換えられてもよい。)及び
(b) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)、基(b)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。)
さらに、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は、例えば本発明の一つの形態では1~95%である。また、本発明の別の実施形態では前記含有量は1~85%である。さらに、本発明の別の実施形態では前記含有量は1~75%である。さらに、本発明の別の実施形態では前記含有量は1~65%である。さらに、本発明の別の実施形態では前記含有量は1~55%である。さらに、本発明の別の実施形態では前記含有量は1~45%である。さらに、本発明の別の実施形態では前記含有量は1~35%である。さらに、本発明の別の実施形態では前記含有量は1~25%である。
さらに、本発明の液晶組成物のTniを高く保ち、温度安定性の良い液晶組成物が必要な場合は上記下限値および上限値がともに高いことが好ましい。
また、駆動電圧を低く保つために誘電率異方性を大きくしたいときは、上記下限値および上限値が低いことが好ましい。
RL1及びRL2は、それが結合する環構造がフェニル基(芳香族)である場合には、直鎖状の炭素原子数1~5のアルキル基、直鎖状の炭素原子数1~4(またはそれ以上)のアルコキシ基及び炭素原子数4~5のアルケニル基が好ましく、それが結合する環構造がシクロヘキサン、ピラン及びジオキサンなどの飽和した環構造の場合には、直鎖状の炭素原子数1~5のアルキル基、直鎖状の炭素原子数1~4(またはそれ以上)のアルコキシ基及び直鎖状の炭素原子数2~5のアルケニル基が好ましい。
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。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの求められる性能に応じて適宜組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。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。さらに、本発明の別の実施形態では4種類である。さらに、本発明の別の実施形態では5種類である。さらに、本発明の別の実施形態では6種類以上である。
さらに、本発明の液晶組成物のTniを高く保ち、温度安定性の良い液晶組成物が必要な場合は上記下限値が中庸で上限値が中庸であることが好ましい。
また、駆動電圧を低く保つために誘電率異方性を大きくしたいときは、上記下限値を低く上限値が低いことが好ましい。
R11およびR12は、それが結合する環構造がフェニル基(芳香族)である場合には、直鎖状の炭素原子数1~5のアルキル基、直鎖状の炭素原子数1~4のアルコキシ基及び炭素原子数4~5のアルケニル基が好ましく、それが結合する環構造がシクロヘキサン、ピラン及びジオキサンなどの飽和した環構造の場合には、直鎖状の炭素原子数1~5のアルキル基、直鎖状の炭素原子数1~4のアルコキシ基及び直鎖状の炭素原子数2~5のアルケニル基が好ましい。
さらに、一般式(I)で表される化合物は一般式(I-1)で表される化合物群から選ばれる化合物であることが好ましい。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの求められる性能に応じて適宜組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。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。さらに、本発明の別の実施形態では4種類である。さらに、本発明の別の実施形態では5種類以上である。
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は、例えば本発明の一つの実施形態としては前記含有量は3~70質量%である。あるいは本発明の別の実施形態では前記含有量は15~70質量%である。また、本発明の別の実施形態では前記含有量は18~70質量%である。さらに、本発明の別の実施形態では前記含有量は25~70質量%である。さらに、本発明の別の実施形態では前記含有量は29~70質量%である。さらに、本発明の別の実施形態では前記含有量は31~70質量%である。さらに、本発明の別の実施形態では前記含有量は35~70質量%である。さらに、本発明の別の実施形態では前記含有量は43~70質量%である。さらに、本発明の別の実施形態では前記含有量は47~70質量%である。さらに、本発明の別の実施形態では前記含有量は50~70質量%である。さらに、本発明の別の実施形態では前記含有量は53~70質量%である。さらに、本発明の別の実施形態では前記含有量は56~70質量%である。
さらに、温度安定性の良い液晶組成物が必要な場合は液晶組成物のTniを高く保つべく、上記下限値および上限値が中庸であることが好ましい。
また、駆動電圧を低く保つために誘電率異方性を大きくしたいときは、上記下限値および上限値が低いことが好ましい。
本発明の液晶組成物において、一般式(I-1-1)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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの求められる性能に応じて適宜組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。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。
本発明の液晶組成物において、一般式(I-1-2)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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
特に、式(2.2)で表される化合物は本発明の液晶組成物の応答速度を特に改善するため好ましい。
また、応答速度よりも高いTniを求めるときは、式(2.3)または式(2.4)で表される化合物を用いることが好ましい。
さらに、式(2.3)および式(2.4)で表される化合物の含有量は、低温での溶解度を良くするために30%以上にすることは好ましくない。
具体的には、式(2.5)で表される化合物は、本発明の液晶組成物の総質量100質量%に対して、11質量%以上含有することが好ましく、15質量%以上含有することがさらに好ましく、23質量%以上含有することがさらに好ましく、26質量%以上含有することが更に好ましく、26~28質量%含有することが特に好ましい。
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組み合わせる。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。
本発明の液晶組成物において、一般式(I-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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
特に、式(3.2)で表される化合物は本発明の液晶組成物の応答速度を特に改善するため好ましい。
また、応答速度よりも高いTniを求めるときは、式(3.3)または式(3.4)で表される化合物を用いることが好ましい。
さらに、式(3.3)および式(3.4)で表される化合物の含有量は、低温での溶解度を良くするために20%以上にすることは好ましくない。
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組み合わせる。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。
本発明の液晶組成物において、一般式(I-3)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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
さらに、滴下痕や焼き付き特性を改良する場合は、含有量の範囲を中間に設定することが好ましい。
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組み合わせる。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。
本発明の液晶組成物において、一般式(I-4)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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの求められる性能に応じて組み合わせる。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。
本発明の液晶組成物において、一般式(I-5)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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
具体的には、、式(6.7)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して、2質量%以上含有することが好ましく、3質量%以上含有することがさらに好ましく、5質量%以上含有することがさらに好ましく、7質量%以上含有することが特に好ましい。
一般式(I-7)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して、1質量%以上30質量%以下であることが好ましく、2質量%以上30質量%以下であることがより好ましく、3質量%以上30質量%以下であることがより好ましく、4質量%以上30質量%以下であることがより好ましく、6質量%以上30質量%以下であることがより好ましく、8質量%以上30質量%以下であることがより好ましく、10質量%以上30質量%以下であることがより好ましく、12質量%以上30質量%以下であることがより好ましく、15質量%以上25質量%以下であることがより好ましく、18質量%以上24質量%以下であることがより好ましく、21質量%以上22質量%以下であることが特に好ましい。
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、1種類から3種類組み合わせることが好ましい。
一般式(I-8)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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて、適宜調整できる。
具体的には、一般式(I-8)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、5質量%以上65質量%以下であることが好ましく、10質量%以上65質量%以下であることがより好ましく、15質量%以上65質量%以下であることがより好ましく、20質量%以上65質量%以下であることがより好ましく、25質量%以上65質量%以下であることがより好ましく、30質量%以上65質量%以下であることがより好ましく、35質量%以上65質量%以下であることがより好ましく、40質量%以上65質量%以下であることがより好ましく、45質量%以上60質量%以下であることがより好ましく、50質量%以上58質量%以下であることがより好ましく、55質量%以上56質量%以下であることが特に好ましい。
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組み合わせる。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、本発明のさらに別の実施形態では3種類である。さらに、本発明の別の実施形態では4種類以上である。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの求められる性能に応じて組み合わせる。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種類以上である。
式(11.1)または式(11.2)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、3質量%以上40質量%以下であることが好ましく、5質量%以上35質量%以下であることがより好ましく、5質量%以上30質量%以下であることが更に好ましく、5質量%以上25質量%以下であることが特に好ましく、5質量%以上20質量%以下であることが最も好ましい。また、最も好ましい範囲のうち、例えば、8質量%以上20質量%以下、12質量%以上20質量%以下、15質量%以上20質量%以下、5質量%以上18質量%以下、5質量%以上15質量%以下、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8質量%以下が挙げられる。
式(11.1)で表される化合物と式(11.2)で表される化合物との両方を含有する場合は、両方の化合物の合計質量が本発明の液晶組成物の総質量に対して13質量%以上45質量%以下であることが好ましく、19質量%以上40質量%以下であることがより好ましく、24質量%以上35質量%以下であることが更に好ましい。
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、これらの化合物の中から1種~3種類含有することが好ましい。
一般式(II-3)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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
具体的には、一般式(II-3)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、好ましくは2~45質量%であり、より好ましい含有量として、例えば、5~45質量%、8~45質量%、11~45質量%、14~45質量%、17~45質量%、20~45質量%、23~45質量%、26~45質量%、29~45質量%、或いは2~45質量%、2~40質量%、2~35質量%、2~30質量%、2~25質量%、2~20質量%、2~15質量%、2~10質量%が挙げられる。
式(12.1)または式(12.2)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、3質量%以上40質量%以下であることが好ましく、5質量%以上40質量%以下であることがより好ましく、7質量%以上40質量%以下であることがより好ましく、9質量%以上40質量%以下であることがより好ましく、11質量%以上40質量%以下であることがより好ましく、12質量%以上40質量%以下であることがより好ましく、13質量%以上40質量%以下であることが更に好ましく、18質量%以上30質量%以下であることが更に好ましく、21質量%以上25質量%以下であることが特に好ましい。
また、式(12.2)で表される化合物の含有量は、本発明の液晶組成物の総質量に対して3質量%以上40質量%以下であることが好ましく、5質量%以上40質量%以下であることがより好ましく、8質量%以上40質量%以下であることが更に好ましく、10質量%以上40質量%以下であることが更に好ましく、12質量%以上40質量%以下であることが更に好ましく、15質量%以上40質量%以下であることが更に好ましく、17質量%以上30質量%以下であることが更に好ましく、19質量%以上25質量%以下であることが特に好ましい。
式(12.1)で表される化合物と式(12.2)で表される化合物との両方を含有する場合は、両方の化合物の合計質量が本発明の液晶組成物の総質量に対して15質量%以上45質量%以下であることが好ましく、19質量%以上45質量%以下であることがより好ましく、24質量%以上40質量%以下であることが更に好ましく、30質量%以上35質量%以下であることが特に好ましい。
また、式(12.3)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して好ましくは0.05質量%以上2質量%以下であり、0.1質量%以上1質量%以下であることがより好ましく、0.2質量%以上0.5質量%以下であることが更に好ましい。
なお、式(12.3)で表される化合物は、光学活性化合物であってもよい。
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、これらの化合物の中から1種~3種類含有することが好ましい。
一般式(II-4)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して、質量%以上15質量%以下であることが好ましく、2質量%以上15質量%以下であることがより好ましく、3質量%以上15質量%以下であることがより好ましく、4質量%以上12質量%以下であることがより好ましく、5質量%以上7質量%以下であることが特に好ましい。
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組み合わせる。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。さらに、本発明の別の実施形態では3種類である。さらに、本発明の別の実施形態では4種類である。さらに、本発明の別の実施形態では5種類である。さらに、本発明の別の実施形態では6種類以上である。
一般式(IV-1)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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの求められる性能に応じて組み合わせる。
一般式(IV-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、複屈折率、プロセス適合性、滴下痕、焼き付き、誘電率異方性などの求められる性能に応じて適宜調整する必要がある。
具体的には、一般式(IV-2)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、0.5~40質量%であることが好ましい。より好ましい含有量としては、例えば、1~40質量%、2~40質量%、3~40質量%、5~40質量%、7~40質量%、9~40質量%、12~40質量%、15~40質量%、20~40質量%、或いは、1~40質量%、1~30質量%、1~25質量%、1~20質量%、1~15質量%、1~10質量%、1~5質量%、1~4質量%が挙げられる。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの求められる性能に応じて組み合わせる。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。さらに、本発明の別の実施形態では3種類である。さらに、本発明の別の実施形態では4種類である。
さらに、一般式(V-1)で表される化合物は一般式(V-1-1)で表される化合物であることが好ましい。
一般式(V-1-1)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、1質量%以上15質量%以下含有することが好ましく、2質量%以上15質量%以下含有することが更に好ましく、3質量%以上10質量%以下含有することが更に好ましく、4質量%以上8質量%以下含有することが特に好ましい。
一般式(V-1-3)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して、1質量%以上15質量%以下含有することが好ましく、2質量%以上15質量%以下含有することが更に好ましく、3質量%以上10質量%以下含有することが更に好ましく、4質量%以上8質量%以下含有することが特に好ましい。
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組み合わせる。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。さらに、本発明の別の実施形態では3種類以上である。
一般式(V-3)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、好ましくは2質量%以上16質量%以下含有することが好ましく、4質量%以上16質量%以下含有することが更に好ましく、7質量%以上13質量%以下含有することが更に好ましく、8質量%以上11質量%以下含有することが特に好ましい。
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、これらの化合物の中から1種~3種類含有することが好ましく、1種~4種類含有することがさらに好ましく、1種~5種類以上含有することが特に好ましい。
一般式(VI)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、35質量%以下が好ましく、25質量%以下がより好ましく、15質量%以下がさらに好ましい。
本発明の液晶組成物は、一般式(M)で表される化合物を含有することも好ましい。
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(i)および一般式(ii)で表される化合物を除く。)
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの所望の性能に応じて組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。あるいは本発明の別の実施形態では2種類である。さらに、本発明の別の実施形態では3種類である。またさらに、本発明の別の実施形態では4種類である。さらに、本発明の別の実施形態では5種類である。さらに、本発明の別の実施形態では6種類である。さらに、本発明の別の実施形態では7種類以上である。
また、RM1は、それが結合する環構造がシクロヘキサン、ピラン及びジオキサンなどの飽和した環構造の場合には、直鎖状の炭素原子数1~5のアルキル基、直鎖状の炭素原子数1~4のアルコキシ基及び直鎖状の炭素原子数2~5のアルケニル基が好ましい。
液晶組成物の化学的な安定性が求められる場合には、一般式(M)で表される化合物は塩素原子をその分子内に有さないことが好ましい。
具体的には、塩素原子を含有する一般式(M)で表される化合物の含有量は、液晶組成物の総量100質量%に対して、3%以下であることが好ましく、1%以下であることが好ましく、0.5%以下であることが好ましく、実質的に含有しないことが好ましい。なお、実質的に含有しないとは、化合物製造時の不純物として生成した化合物等の意図せず塩素原子を含む化合物のみが液晶組成物に混入することを意味する。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの所望の性能に応じて組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。あるいは本発明の別の実施形態では2種類である。さらに、本発明の別の実施形態では3種類以上である。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの所望の性能に応じて組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。あるいは本発明の別の実施形態では2種類以上である。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの所望の性能に応じて組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。あるいは本発明の別の実施形態では2種類である。さらに、本発明の別の実施形態では3種類である。またさらに、本発明の別の実施形態では4種類である。さらに、本発明の別の実施形態では5種類である。さらに、本発明の別の実施形態では6種類以上である。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの所望の性能に応じて組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。あるいは本発明の別の実施形態では2種類である。さらに、本発明の別の実施形態では3種類である。またさらに、本発明の別の実施形態では4種類以上である。
組み合わせることができる化合物の種類に特に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などの所望の性能に応じて組み合わせて使用する。使用する化合物の種類は、例えば本発明の一つの実施形態としては1種類である。あるいは本発明の別の実施形態では2種類である。さらに、本発明の別の実施形態では3種類以上である。
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%がより好ましく、前記化合物の含有量の上限値としては25%が好ましく、22%がより好ましく、20%が更に好ましく、19%が特に好ましい。
液晶組成物の溶解性を重視する場合には前記一般式(IX-1-1)で表される化合物2種を使用することが好ましく、一般式(IX-1-1)で表される化合物の含有量を増加させたい場合には当該化合物2種を使用することが好ましい。
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1~25質量%、別の実施形態では2~20質量%、更に別の実施形態では4~10質量%、また更に別の実施形態では10~30質量%、また更に別の実施形態では14~20質量%、また更に別の実施形態では16~20質量%、また更に別の実施形態では21~40質量%である。
また、例えば、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。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して1種から3種類組み合わせることが好ましく、1種から4種類組み合わせることがより好ましい。
一般式(IX-1-2)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、1質量%以上30質量%以下であることが好ましく、5質量%以上30質量%以下がより好ましく、8質量%以上30質量%以下がさらに好ましく、10質量%以上25質量%以下がさらに好ましく、14質量%以上22質量%以下がさらに好ましく、16質量%以上20質量%以下が特に好ましい。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して、実施形態ごとに適宜組み合わせて使用する。例えば、本発明の一つの実施形態では1種類、別の実施形態では2種類、さらに別の実施形態では3種類、またさらに別の実施形態では4種類、またさらに別の実施形態では5種類、またさらに別の実施形態では6種類以上組み合わせる。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して1種から3種類組み合わせることが好ましい。
一般式(IX-2-1)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、複屈折率などの特性を考慮して実施形態ごとに好ましい上限値と下限値がある。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して1種から3種類組み合わせることが好ましく、1種から4種類組み合わせることがより好ましい。
一般式(IX-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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値がある。
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。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して1種から2種類組み合わせることが好ましい。
一般式(IX-2-3)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、1質量%以上30質量%以下であることが好ましく、3質量%以上20質量%以下がより好ましく、6質量%以上15質量%以下がさらに好ましく、8質量%以上10質量%以下がさらに好ましい。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して、実施形態ごとに適宜組み合わせて使用する。例えば、本発明の一つの実施形態では1種類、別の実施形態では2種類、さらに別の実施形態では3種類、またさらに別の実施形態では4種類以上である。
一般式(IX-2-5)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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値がある。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して1種から2種類組み合わせることが好ましい。
一般式(IX-3-1)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、3質量%以上30質量%以下であることが好ましく、7質量%以上30質量%以下がより好ましく、13質量%以上20質量%以下がさらに好ましく、15質量%以上18質量%以下が特に好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して実施形態ごとに適宜組み合わせる。例えば、本発明の一つの実施形態では1種である。また、本発明の別の実施形態では2種類である。さらに別の実施形態では3種類である。さらにまた別の実施形態では4種類である。さらにまた別の実施形態では5種類以上である。
たとえば、本発明の一つの実施形態では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は2~45質量%、別の実施形態では前記化合物の含有量は3~45質量%、さらに別の実施形態では前記化合物の含有量は6~45質量%、またさらに別の実施形態では前記化合物の含有量は8~45質量%、またさらに別の実施形態では前記化合物の含有量は9~45質量%、またさらに別の実施形態では前記化合物の含有量は11~45質量%、またさらに別の実施形態では前記化合物の含有量は12~45質量%である。またさらに別の実施形態では前記化合物の含有量は18~45質量%である。またさらに別の実施形態では前記化合物の含有量は19~45質量%である。またさらに別の実施形態では前記化合物の含有量は23~45質量%である。またさらに別の実施形態では前記化合物の含有量は25~45質量%である。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2~45質量%、別の実施形態では前記化合物の含有量は2~35質量%、更に別の実施形態では前記化合物の含有量は2~30質量%、また更に別の実施形態では前記化合物の含有量は2~25質量%、また更に別の実施形態では前記化合物の含有量は2~20質量%、また更に別の実施形態では前記化合物の含有量は2~13質量%、また更に別の実施形態では前記化合物の含有量は2~9質量%、また更に別の実施形態では前記化合物の含有量は2~6質量%、また更に別の実施形態では前記化合物の含有量は2~3質量%である。
さらに、焼き付きの発生しにくい液晶組成物が必要な場合は、上記下限値および上限値を低めにすることが好ましい。
また、駆動電圧を低く保つために誘電率異方性を大きくしたいときは、上記下限値および上限値を高めにすることが好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して実施形態ごとに適宜組み合わせる。例えば、本発明の一つの実施形態では1種である。また、本発明の別の実施形態では2種類である。さらに別の実施形態では3種類である。さらにまた別の実施形態では4種類である。さらにまた別の実施形態では5種類以上である。
一般式(X-1)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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値がある。
組み合わせることのできる化合物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、複屈折率などを考慮して実施形態ごとに適宜組み合わせる。例えば、本発明の一つの実施形態では1種である。また、本発明の別の実施形態では2種類である。さらに別の実施形態では3種類である。さらにまた別の実施形態では4種類以上である。
一般式(X-1-1)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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値がある。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましく、1種から3種類以上組み合わせることがより好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましい。
R10は炭素原子数1~5のアルキル基、炭素原子数4又は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。)
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましく、1種から3種類以上組み合わせることがより好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましく、1種から3種類以上組み合わせることがより好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましく、1種から3種類以上組み合わせることがより好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましく、1種から3種類以上組み合わせることがより好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましい。
一般式(X-6)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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値がある。
前記化合物のうち1種のみを使用する場合は、前記総質量に対する前記化合物の含有量の下限値としては1%が好ましく、2%がより好ましく、3%が更に好ましく、4%が特に好ましく、前記総質量に対する前記化合物の含有量の上限値としては15%が好ましく、12%がより好ましく、10%が更に好ましく、8%が特に好ましく、7%が最も好ましい。
前記化合物のうち2種を使用する場合は、前記総質量に対する前記2種の化合物の合計の含有量の下限値としては5%が好ましく、7%がより好ましく、10%が更に好ましく、前記総質量に対する前記2種の化合物の合計の含有量の上限値としては25%が好ましく、20%がより好ましく、18%が更に好ましく、16%が更に好ましく、13%が更に好ましく、10%が特に好ましく、9%が最も好ましい。
液晶組成物の溶解性を重視する場合には前記一般式(ii)で表される化合物2種を使用することが好ましく、一般式(ii)で表される化合物の含有量を増加させたい場合には当該化合物2種を使用することが好ましい。
例えば、本発明の一つの実施形態では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は、3~30質量%、別の実施形態では3~25質量%、さらに別の実施形態では3~10質量%、またさらに別の実施形態では3~7質量%、またさらに別の実施形態では5~10質量%、またさらに別の実施形態では11~20質量%、またさらに別の実施形態では14~18質量%である。またさらに別の実施形態では18~25質量%である。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から3種類以上組み合わせることが好ましい。
一般式(XI)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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値とがある。
組み合わせることのできる化合物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、複屈折率などを考慮して、実施形態ごとに適宜組み合わせる。例えば、本発明の一つの実施形態では1種類、別の実施形態では2種類、更に別の実施形態では3種類以上組み合わせる。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から3種類以上組み合わせることが好ましく、1種から4種類以上組み合わせることがより好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましく、1種から3種類以上組み合わせることがより好ましい。
一般式(XII-1)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、1質量%以上15質量%以下であることが好ましく、2質量%以上10質量%以下がより好ましく、3質量%以上8質量%以下がさらに好ましく、4質量%以上6質量%以下が特に好ましい。
組み合わせることのできる化合物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、複屈折率などを考慮して1種から2種類以上組み合わせることが好ましく、1種から3種類以上組み合わせることがより好ましい。
一般式(XII-2)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、1質量%以上20質量%以下であることが好ましく、3質量%以上20質量%以下がより好ましく、4質量%以上17質量%以下がさらに好ましく、6質量%以上15質量%以下がさらに好ましく、9質量%以上13質量%以下が特に好ましい。
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、これらの化合物の中から1種~2種類含有することが好ましく、1種~3種類含有することがより好ましく、1種~4種類含有することが更に好ましい。
一般式(XIII)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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値がある。
また、駆動電圧の小さい液晶表示素子用に用いられる場合も、一般式(XIII)で表される化合物の含有量を多めにすることが適している。
また、低温の環境で用いられる液晶表示素子用に用いられる場合は一般式(XIII)で表される化合物の含有量を少なめにすることが適している。
応答速度の速い液晶表示素子に用いられる液晶組成物である場合は、一般式(XIII)で表される化合物の含有量を少なめにすることが適している。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して1種から3種類組み合わせることが好ましい。
一般式(XIV-1-1)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して2質量%以上であることが好ましく、3質量%以上がより好ましく、7質量%以上がさらに好ましく、10質量%以上がさらに好ましく、18質量%以上が特に好ましい。また、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、最大比率を30質量%以下にとどめることが好ましく、27質量%以下がさらに好ましく、24質量%以下がより好ましく、21質量%未満が特に好ましい。
一般式(XIV-1-2)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して、1質量%以上15質量%以下であることが好ましく、3質量%以上13質量%以下がより好ましく、5質量%以上11質量%以下がさらに好ましく、7質量%以上9質量%以下が特に好ましい。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して実施形態ごとに適宜組み合わせる。例えば、本発明の一つの実施形態では1種である。さらに、本発明の別の実施形態では2種類である。あるいは、本発明のさらに別の実施形態では3種類である。また、本発明のさらに別の実施形態では4種類である。あるいは、本発明のさらに別の実施形態では5種類以上である。
一般式(XIV-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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値とがある。
一般式(XIV-2-1)で表される化合物の含有量は、本発明の液晶組成物の総量100質量%に対して、1質量%以上15質量%以下であることが好ましく、3質量%以上13質量%以下がより好ましく、5質量%以上11質量%以下がさらに好ましく、7質量%以上9質量%以下が特に好ましい。
一般式(XIV-2-3)で表される化合物の含有量は、本発明の液晶組成物の総量100質量に対して、5質量%以上30質量%以下であることが好ましく、9質量%以上27質量%以下がより好ましく、12質量%以上24質量%以下がさらに好ましく、12質量%以上20質量%以下が特に好ましい。
組み合わせることのできる化合物の種類に制限は無いが、低温での溶解性、転移温度、電気的な信頼性、複屈折率などを考慮して実施形態ごとに適宜組み合わせる。例えば、本発明の一つの実施形態では1種である。さらに、本発明の別の実施形態では2種類である。あるいは、本発明のさらに別の実施形態では3種類以上である。
一般式(XIV-2-4)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、複屈折率などの特性を考慮して実施形態ごとに上限値と下限値とがある。
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、トランスー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。
X201及びX202は、何れも水素原子を表すジアクリレート誘導体、何れもメチル基を有するジメタクリレート誘導体の何れも好ましく、一方が水素原子を表しもう一方がメチル基を表す化合物も好ましい。
これらの化合物の重合速度は、ジアクリレート誘導体が最も早く、ジメタクリレート誘導体が遅く、非対称化合物がその中間であり、その用途により好ましい態様を用いることができる。PSA表示素子においては、ジメタクリレート誘導体が特に好ましい。
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-を表すが、PSA表示素子においては少なくとも一方が単結合であることが好ましく、共に単結合を表す化合物又は一方が単結合でもう一方が炭素原子数1~8のアルキレン基又は-O-(CH2)s-を表す態様が好ましい。この場合1~4のアルキル基が好ましく、sは1~4が好ましい。
Z201は、-OCH2-、-CH2O-、-COO-、-OCO-、-CF2O-、-OCF2-、-CH2CH2-、-CF2CF2-又は単結合が好ましく、-COO-、-OCO-又は単結合がより好ましく、単結合が特に好ましい。
M201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すが、1,4-フェニレン基又は単結合が好ましい。Cが単結合以外の環構造を表す場合、Z201は単結合以外の連結基も好ましく、M201が単結合の場合、Z201は単結合が好ましい。
一般式(XX)において、M201が単結合を表し、環構造が二つの環で形成される場合において、次の式(XXa-1)から式(XXa-5)を表すことが好ましく、式(XXa-1)から式(XXa-3)を表すことがより好ましく、式(XXa-1)を表すことが特に好ましい。
これらの骨格を含む重合性化合物は重合後の配向規制力がPSA型液晶表示素子に最適であり、良好な配向状態が得られることから、表示ムラが抑制されるか、又は、全く発生しない。
本発明の液晶組成物にモノマーを添加する場合において、重合開始剤が存在しない場合でも重合は進行するが、重合を促進するために重合開始剤を含有していてもよい。
重合開始剤としては、ベンゾインエーテル類、ベンゾフェノン類、アセトフェノン類、ベンジルケタール類、アシルフォスフィンオキサイド類等が挙げられる。
RQは炭素原子数1から22の直鎖アルキル基又は分岐鎖アルキル基を表し、該アルキル基中の1つ又は2つ以上のCH2基は、酸素原子が直接隣接しないように、-O-、-CH=CH-、-CO-、-OCO-、-COO-、-C≡C-、-CF2O-、-OCF2-で置換されてよいが、炭素原子数1から10の直鎖アルキル基、直鎖アルコキシ基、1つのCH2基が-OCO-又は-COO-に置換された直鎖アルキル基、分岐鎖アルキル基、分岐アルコキシ基、1つのCH2基が-OCO-又は-COO-に置換された分岐鎖アルキル基が好ましく、炭素原子数1から20の直鎖アルキル基、1つのCH2基が-OCO-又は-COO-に置換された直鎖アルキル基、分岐鎖アルキル基、分岐アルコキシ基、1つのCH2基が-OCO-又は-COO-に置換された分岐鎖アルキル基が更に好ましい。MQはトランス-1,4-シクロへキシレン基、1,4-フェニレン基又は単結合を表すが、トランス-1,4-シクロへキシレン基又は1,4-フェニレン基が好ましい。
本願発明の液晶組成物において、一般式(Q)で表される化合物を1種又は2種を含有することが好ましく、1種から5種含有することが更に好ましく、その含有量は0.001から1質量%であることが好ましく、0.001から0.1質量%が更に好ましく、0.001から0.05質量%が特に好ましい。
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、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。
カラーフィルタは、例えば、顔料分散法、印刷法、電着法又は、染色法等によって作成することができる。顔料分散法によるカラーフィルタの作成方法を一例に説明すると、カラーフィルタ用の硬化性着色組成物を、該透明基板上に塗布し、パターニング処理を施し、そして加熱又は光照射により硬化させる。この工程を、赤、緑、青の3色についてそれぞれ行うことで、カラーフィルタ用の画素部を作成することができる。その他、該基板上に、TFT、薄膜ダイオード、金属絶縁体金属比抵抗素子等の能動素子を設けた画素電極を設置してもよい。
2枚の基板間に重合性化合物含有液晶組成物を狭持させる方法は、通常の真空注入法又はODF法などを用いることができるが、真空注入法においては滴下痕が発生しないものの、注入の跡が残る課題を有しているものであるが、本願発明においては、ODF法を用いて製造する表示素子により好適に使用することができる。ODF法の液晶表示素子製造工程においては、バックプレーンまたはフロントプレーンのどちらか一方の基板にエポキシ系光熱併用硬化性などのシール剤を、ディスペンサーを用いて閉ループ土手状に描画し、その中に脱気下で所定量の液晶組成物を滴下後、フロントプレーンとバックプレーンとを接合することによって液晶表示素子を製造することができる。本発明の液晶組成物は、ODF工程における液晶組成物の滴下が安定的に行えるため、好適に使用することができる。
重合性化合物を重合させる方法としては、液晶の良好な配向性能を得るためには、適度な重合速度が望ましいので、紫外線又は電子線等の活性エネルギー線を単一又は併用又は順番に照射することによって重合させる方法が好ましい。紫外線を使用する場合、偏光光源を用いても良いし、非偏光光源を用いても良い。また、重合性化合物含有液晶組成物を2枚の基板間に挟持させて状態で重合を行う場合には、少なくとも照射面側の基板は活性エネルギー線に対して適当な透明性が与えられていなければならない。また、光照射時にマスクを用いて特定の部分のみを重合させた後、電場や磁場又は温度等の条件を変化させることにより、未重合部分の配向状態を変化させて、更に活性エネルギー線を照射して重合させるという手段を用いても良い。特に紫外線露光する際には、重合性化合物含有液晶組成物に交流電界を印加しながら紫外線露光することが好ましい。印加する交流電界は、周波数10Hzから10kHzの交流が好ましく、周波数60Hzから10kHzがより好ましく、電圧は液晶表示素子の所望のプレチルト角に依存して選ばれる。つまり、印加する電圧により液晶表示素子のプレチルト角を制御することができる。横電界型MVAモードの液晶表示素子においては、配向安定性及びコントラストの観点からプレチルト角を80度から89.9度に制御することが好ましい。
図1は、互いに対向する二つの基板と、前記基板間に設けられたシール材と、前記シール材に囲まれた封止領域に封入された液晶とを備えている液晶表示素子を示す断面図である。
具体的には、第1基板100上に、TFT層102、画素電極103を設け、その上からパッシベーション膜104及び第1配向膜105を設けたバックプレーンと、第2基板200上に、ブラックマトリックス202、カラーフィルタ203、平坦化膜(オーバーコート層)201、透明電極204を設け、その上から第2配向膜205を設け、前記バックプレーンと対向させたフロントプレーンと、前記基板間に設けられたシール材301と、前記シール材に囲まれた封止領域に封入された液晶層303とを備え、前記シール材301が接する基板面には突起(柱状スペーサ)302,304が設けられている液晶表示素子の態様を示している。
なおプラスチック基板を使用する際には、バリア膜を設けることが好ましい。バリア膜の機能は、プラスチック基板が有する透湿性を低下させ、液晶表示素子の電気特性の信頼性を向上することにある。バリア膜としては、それぞれ、透明性が高く水蒸気透過性が小さいものであれば特に限定されず、一般的には酸化ケイ素などの無機材料を用いて蒸着やスパッタリング、ケミカルベーパーデポジション法(CVD法)によって形成した薄膜を使用する。
なお後述の実施例においては、第1基板100又は第2基板200の材質として基板を使用している。
パッシベーション膜104(無機保護膜ともいう)はTFT層を保護するための膜で、通常は窒化膜(SiNx)、酸化膜(SiOx)等を化学的気相成長(CVD)技術等により形成する。
また、第1配向膜105は、液晶を配向させる機能を有する膜であり、通常ポリイミドのような高分子材料が用いられることが多い。塗布液には、高分子材料と溶剤からなる配向剤溶液が使われる。配向膜はシール材との接着力を阻害する可能性があるため、封止領域内にパターン塗布する。塗布にはフレキソ印刷法のような印刷法、インクジェットのような液滴吐出法が用いられる。塗布された配向剤溶液は仮乾燥により溶剤が蒸発した後、ベーキングにより架橋硬化される。この後、配向機能を出すために、配向処理を行う。
配向処理は通常ラビング法にて行われる。前述のように形成された高分子膜上を、レーヨンのような繊維から成るラビング布を用いて一方向にこすることにより液晶配向能が生じる。
ブラックマトリックス202は、例えば、顔料分散法にて作製する。具体的にはバリア膜201を設けた第2基板200上に、ブラックマトリックス形成用に黒色の着色剤を均一分散させたカラーレジン液を塗布し、着色層を形成する。続いて、着色層をベーキングして硬化する。この上にフォトレジストを塗布し、これをプリベークする。フォトレジストにマスクパターンを通して露光した後に、現像を行って着色層をパターニングする。この後、フォトレジスト層を剥離し、着色層をベーキングしてブラックマトリックス202が完成する。
あるいは、フォトレジスト型の顔料分散液を使用してもよい。この場合は、フォトレジスト型の顔料分散液を塗布し、プリベークしたのち、マスクパターンを通して露光した後に、現像を行って着色層をパターニングする。この後、フォトレジスト層を剥離し、着色層をベーキングしてブラックマトリックス202が完成する。
また、前記透明電極204を保護する目的で、透明電極204の上にパッシベーション膜を設ける場合もある。
第2配向膜205は、前述の第1配向膜105と同じものである。
前記柱状スペーサスペーサの形状は特に限定されず、その水平断面を円形、四角形などの多角形など様々な形状にすることができるが、工程時のミスアラインマージンを考慮して、水平断面を円形または正多角形にすることが特に好ましい。また該突起形状は、円錐台または角錐台であることが好ましい。
前記柱状スペーサの材質は、シール材もしくはシール材に使用する有機溶剤、あるいは液晶に溶解しない材質であれば特に限定されないが、加工及び軽量化の面から合成樹脂(硬化性樹脂)であることが好ましい。一方、前記突起は、フォトリソグラフィによる方法や液滴吐出法により、第一の基板上のシール材が接する面に設けることが可能である。このような理由から、フォトリソグラフィによる方法や液滴吐出法に適した、光硬化性樹脂を使用することが好ましい。
例として、前記柱状スペーサをフォトリソグラフィ法によって得る場合について説明する。図2は、フォトマスクパターンとしてブラックマトリックス上に形成する柱状スペーサ作成用パターンを使用した露光処理工程の図である。
前記フロントプレーンの透明電極204上に、柱状スペーサ形成用の(着色剤を含まない)レジン液を塗布する。続いて、このレジン層402をベーキングして硬化する。この上にフォトレジストを塗布し、これをプリベークする。フォトレジストにマスクパターン401を通して露光した後に、現像を行ってレジン層をパターニングする。この後、フォトレジスト層を剥離し、レジン層をベーキングして柱状スペーサ(図1の302,0304)が完成する。
前記スペーサの材質は、PVA-スチルバゾ感光性樹脂などのネガ型水溶性樹脂や多官能アクリル系モノマー、アクリル酸共重合体、トリアゾール系開始剤などの混合物が使用される。あるいはポリイミド樹脂に着色剤を分散させたカラーレジンを使う方法もある。本発明においては特に限定はなく、使用する液晶組成物やシール材との相性に従い公知の材質でスペーサを得ることができる。
このようにして、フロントプレーン上の封止領域となる面に柱状スペーサを設けた後、該バックプレーンのシール材が接する面にシール材(図1における301)を塗布する。
シール材を塗布する方法としては、印刷法やディスペンス法があるが、シール材の使用量が少ないディスペンス法が望ましい。シール材の塗布位置は封止領域に悪影響を及ぼさないように通常ブラックマトリックス上とする。次工程の液晶滴下領域を形成するため(液晶組成物が漏れないように)、シール材塗布形状は閉ループ形状とする。
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)
γ1 :295Kにおける回転粘性(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60℃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1.5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720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。
◎:残像無し
○:残像ごく僅かに有るも許容できるレベル
△:残像有り許容できないレベル
×:残像有りかなり劣悪
液晶材料の揮発性評価は、容量1.0Lの真空攪拌脱泡ミキサーの専用容器に液晶組成物を0.5kg入れ、公転速度12S-1、自転速度6S-1で真空攪拌脱泡ミキサーを運転しながら5kPaまで脱気し、液晶材料の発泡を目視により観察した。真空攪拌脱泡ミキサーの運転開始から発泡が始まるまでの時間によって、以下の4段階に分類した。
◎:発泡まで2分以上。揮発による装置汚染の可能性が低い。
○:発泡まで1分以上かつ2分未満。揮発による軽微な装置汚染の懸念あり。
△:発泡まで30秒以上かつ1分未満。揮発による装置汚染が起きる。
×:発泡まで30秒以内。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60pLずつ液晶を滴下することを100000回行い、次の「0~100回、101~200回、201~300回、・・・・99901~100,000回」の各100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。
◎:変化が極めて小さい(安定的に液晶表示素子を製造できる)
○: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、2mLのサンプル瓶に液晶組成物を1g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(0.1℃/毎分)→0℃(1時間保持)→昇温(0.1℃/毎分)→20℃(1時間保持)→降温(-0.1℃/毎分)→0℃(1時間保持)→降温(-0.1℃/毎分)→-20℃」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。
◎:600時間以上析出物が観察されなかった。
○: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。
下記に示す化合物を使用して表1に示す組成を有する液晶組成物を調整した。
また得られた液晶組成の物性値を表2に示す。
下記に示す化合物を使用して表3に示す組成を有する液晶組成物を調整した。また得られた液晶組成の物性値を表4に示す。
下記に示す化合物を使用して表5に示す組成を有する液晶組成物を調整した。また得られた液晶組成の物性値を表6に示す。
下記に示す化合物を使用して表7に示す組成を有する液晶組成物を調整した。また得られた液晶組成の物性値を表8に示す。
下記に示す化合物を使用して表9に示す組成を有する液晶組成物を調整した。また得られた液晶組成の物性値を表10に示す。
実施例1に対して比較例2の液晶組成物は、一般式(ii)で表される化合物を除き、Δn及びΔεの値を実施例1の液晶組成物と同等なものとしたものである。はやり粘度(η、γ1、特にγ1)が大きく上昇してしまう。
実施例1に対して比較例3の液晶組成物は、一般式(i)に属する式(54.2)で表される化合物を、環構造を同じく3個持つΔεが正の値を持つ式(56.2)で表される化合物に置換したものである。粘度(η、γ1、特にγ1)は大きく上昇してしまう。
また、表4、6、8、および10に示されるように、実施例2~13の液晶組成物では、いずれも加熱後のVHRの低下が少なく、焼き付き、揮発性、プロセス適合性、低温における溶解性の評価において良好な結果が得られた。
Claims (14)
- 一般式(i)で表される化合物を1種又は2種以上を含有し、一般式(ii)で表される化合物を1種又は2種以上を含有する液晶組成物。
(式中、Ri1及びRii1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、該アルキル基中の水素原子はフッ素原子又は塩素原子によって置換されていてもよく、ni1は1又は2を表し、nii1は1、2又は3を表し、Xi1は水素原子又はフッ素原子を表し、Ai1及びAii1はそれぞれ独立してトランス-1,4-シクロヘキシレン基又は水素原子がフッ素原子又は塩素原子によって置換されていてもよい1,4-フェニレン基を表し、Zi1及びZii1はそれぞれ独立して単結合、-CH=CH-、-C≡C-、-CH2CH2-、-COO-又は-OCO-を表すが、ni1が2を表す場合は、Ai1及び/又はZi1はそれぞれ同一であっても異なっていてもよく、nii1が2又は3を表す場合は、
Aii1及び/又はZii1はそれぞれ同一であっても異なっていてもよい。) - 一般式(i)におけるZi1が単結合である請求項1記載の液晶組成物。
- 一般式(i)におけるni1が2である請求項1または2記載の液晶組成物。
- 一般式(i)におけるni1が2であり、2つのA11がトランス-1,4-シクロヘキシレン基である請求項1~3のいずれかに記載の液晶組成物。
- 一般式(i)におけるni1が2であり、2つのAi1が1,4-フェニレン基である請求項1~4のいずれかに記載の液晶組成物。
- 一般式(ii)におけるZii1が単結合である請求項1~5のいずれかに記載の液晶組成物。
- 一般式(ii)におけるnii1が2である請求項1~6のいずれかに記載の液晶組成物。
- 一般式(ii)におけるnii1が2であり、2つのA21のうち1つがトランス-1,4-シクロヘキシレン基であり、もう一つが1,4-フェニレン基である請求項1~7のいずれかに記載の液晶組成物。
- 一般式(ii)におけるnii1が2であり、2つのAii1がトランス-1,4-シクロヘキシレン基である請求項1~8のいずれか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1~9のいずれか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)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が、ただし、一般式(i)で表される化合物及び一般式(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1~10のいずれか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)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(i)で表される化合物及び一般式(ii)で表される化合物を除く。) - 請求項1~11のいずれかに記載の液晶組成物を使用した液晶表示素子。
- 請求項1~11のいずれか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、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。
- 請求項12又は13に記載の液晶表示素子を使用したことを特徴とする液晶ディスプレイ。
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US14/371,143 US20150376501A1 (en) | 2013-03-07 | 2013-03-07 | Liquid crystal composition and liquid crystal display device using same |
PCT/JP2013/056274 WO2014136234A1 (ja) | 2013-03-07 | 2013-03-07 | 液晶組成物及びそれを使用した液晶表示素子 |
JP2013539472A JP5500321B1 (ja) | 2013-03-07 | 2013-03-07 | 液晶組成物及びそれを使用した液晶表示素子 |
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JPH10101599A (ja) * | 1996-09-25 | 1998-04-21 | Chisso Corp | 置換ベンゼン誘導体、液晶組成物および液晶表示素子 |
JP2001042793A (ja) * | 1999-07-27 | 2001-02-16 | Dainippon Ink & Chem Inc | ネマチック液晶組成物及びこれを用いた液晶表示装置 |
WO2011099400A1 (ja) * | 2010-02-12 | 2011-08-18 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
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US6579577B2 (en) * | 1996-09-25 | 2003-06-17 | Chisso Corporation | Substituted benzene derivative, liquid crystal composition, and liquid crystal display element |
JP4206687B2 (ja) * | 2002-04-09 | 2009-01-14 | チッソ株式会社 | 液晶組成物および液晶表示素子 |
JP2003301179A (ja) * | 2002-04-11 | 2003-10-21 | Chisso Corp | 液晶組成物および液晶表示素子 |
CN101831307B (zh) * | 2010-03-10 | 2013-04-10 | 北京八亿时空液晶科技股份有限公司 | 一种用于tft显示的液晶组合物 |
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JPH10101599A (ja) * | 1996-09-25 | 1998-04-21 | Chisso Corp | 置換ベンゼン誘導体、液晶組成物および液晶表示素子 |
JP2001042793A (ja) * | 1999-07-27 | 2001-02-16 | Dainippon Ink & Chem Inc | ネマチック液晶組成物及びこれを用いた液晶表示装置 |
WO2011099400A1 (ja) * | 2010-02-12 | 2011-08-18 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
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