TWI471292B - Fluorobiphenyl-containing composition - Google Patents

Description

Composition of fluorine-containing biphenyl

The present invention relates to a nematic liquid crystal composition which is particularly useful as a liquid crystal display material in which dielectric anisotropy (??) is positive.

Liquid crystal display elements, such as clocks and computers, have been used in various measuring machines, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, and advertising displays. The representative of the liquid crystal display method is TN (twisted nematic) type, STN (supper twisted nematic) type, and TFT (film transistor). Vertical alignment type or IPS (in-plane switching) type. The liquid crystal composition used for these liquid crystal display elements is stable to stimuli other than moisture, air, heat, light, etc., and exhibits a liquid crystal phase at a temperature range as wide as possible centered on a room temperature. Viscosity, and the drive voltage is low, beg. Further, in order to make dielectric anisotropy (Δε), refractive index anisotropy (Δn), and the like the most suitable values for each display element, a liquid crystal composition is composed of several kinds to several tens of kinds of compounds. .

A horizontal alignment type display such as a TN type, an STN type, an IPS (in-plane switching) type or an FFS (fringe field switching mode) is a liquid crystal composition having a positive Δ ε. Further, it has been reported that the liquid crystal composition having positive Δ ε is vertically aligned when no voltage is applied, and the driving mode displayed under the transverse electric field is applied, and the necessity of the liquid crystal composition having positive Δ ε is further improved.

In addition, these driving methods are demanding low-voltage driving, high-speed reaction, and a wide operating temperature range. That is, it is required that Δε is positive and the absolute value is large, the viscosity (η) is small, and the high nematic phase-isotropic liquid phase transition temperature (Tni). Further, the setting of Δn × d which is the product of Δn and the cell gap (d) is necessary to adjust the Δn synergistic cell gap of the liquid crystal composition to an appropriate range. Further, in the case where a liquid crystal display element is applied to a television, high-speed reactivity is taken into consideration, and a liquid crystal composition having a small rotational viscosity (γ1) is required.

In the composition of the liquid crystal composition, for example, a liquid crystal represented by the following formula (A-1) containing a liquid crystal compound having a positive Δ ε and a liquid crystal of a compound represented by the following formula (A-2) have been disclosed. Composition (refer to Patent Document 1).

Further, a liquid crystal composition containing a compound represented by the following formula (A-3) has been disclosed (see Patent Document 2).

The characteristics of the liquid crystal composition may be, for example, one or two kinds of compounds having a 3,4 or 4 ring structure having a 2,3',4',5'-tetrafluorobiphenyl structure.

On the other hand, the use of liquid crystal display elements has expanded, and Great changes can be seen in the methods and manufacturing methods. In order to cope with such changes, it has been requested to optimize characteristics other than the basic physical property values known as the conventional ones. In other words, a liquid crystal display device using a liquid crystal composition is widely used in a VA type or an IPS type, and its size is also practically used in a display device of a very large size of 50 or more. With the increase in the size of the substrate, the method of injecting the liquid crystal composition into the substrate is also the mainstream of the injection method by the conventional vacuum injection method (ODF: One Drop Fill) method, but the liquid crystal composition is dropped onto the substrate. The problem that the trace of the drip causes the display quality to be degraded has become superficial.

Further, regarding the manufacturing process of the liquid crystal display element by the ODF method, it is necessary to drip the optimum liquid crystal injection amount in accordance with the size of the liquid crystal display element. When the deviation of the injection amount is greater than the optimum value, the balance of the refractive index or the driving electric field of the liquid crystal display element designed in advance may be collapsed, and display defects such as spot occurrence or poor contrast may occur.

In particular, it is difficult to control the variation of the optimum value within a certain range in order to minimize the amount of liquid crystal injection that is most suitable for use in a small-sized liquid crystal display device of a recently popular smart phone.

Therefore, in order to maintain a high yield of the liquid crystal display element, for example, it is possible to have a small effect on the sudden pressure change or the smashing in the dripping device which is generated when the liquid crystal is dropped, and it is possible to stably drop the liquid crystal over a long period of time. Is necessary.

In this way, the liquid crystal composition used in the active matrix driving liquid crystal display device driven by the TFT element or the like maintains the characteristics or performance sought by the liquid crystal display element as a high-speed reaction property, and has a high specific resistance which has been conventionally emphasized. Specific resistance value or high In addition to the stability of the voltage holding rate or the external stimulus such as light or heat, development of a manufacturing method of a liquid crystal display element is being considered.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2003-301178

[Patent Document 2] Japanese Special Table No. 10-504032

The problem to be solved by the present invention is to provide a composition in which Δε exhibits a positive liquid crystal composition value and is stable to heat or light.

The inventors of the present invention have reviewed various compounds and found that the above problems can be solved by combining specific compounds, and the present invention has been completed.

In other words, the present invention provides a composition containing three or more compounds represented by the following formula (i).

(wherein R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently pass through -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substituted, m ⁱ¹ represents 1 or 2, and A ⁱ¹ represents 1,4-cyclohexylene or a hydrogen atom which may be substituted by a fluorine atom or a chlorine atom. 4-phenylene, but when m ⁱ¹ is 1, A ⁱ¹ represents a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom, and m ⁱ¹ is 2 and A ⁱ¹ is a plural number, A ^I1 may be the same or different, and X ⁱ¹ represents a hydrogen atom, a fluorine atom or a chlorine atom).

The composition of the present invention can obtain low viscosity and exhibit a stable nematic phase at a low temperature, and the change in specific resistance or voltage retention after heating and after UV irradiation is extremely small, so that the product is highly practical and uses it. A liquid crystal display element such as a TN type can achieve a high-speed reaction. Further, since the liquid crystal display device manufacturing program can stably exhibit performance, display defects caused by the process can be suppressed and the yield can be improved, which is very useful.

[Formation of the Invention]

The composition of the present invention contains three or more compounds represented by the following formula (i).

(wherein R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently pass through -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substituted, m ⁱ¹ represents 1 or 2, and A ⁱ¹ represents 1,4-cyclohexylene or a hydrogen atom which may be substituted by a fluorine atom or a chlorine atom. 4-phenylene, but when m ⁱ¹ is 1, A ⁱ¹ represents a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom, and m ⁱ¹ is 2 and A ⁱ¹ is a plural number, A ^I1 may be the same or different, and X ⁱ¹ represents a hydrogen atom, a fluorine atom or a chlorine atom).

In the above formula (i), A ⁱ¹ represents a 1,4-cyclohexyl group or a hydrogen atom which may be substituted by a fluorine atom or a chlorine atom, 1,4-phenylene group, 1,4-cyclohexylene group or 1,4- Phenyl stretching is preferred, and in the case where solubility is important, 1,4-cyclohexylene is more preferred. In the present specification, in the case of 1,4-cyclohexylene, trans-1,4-cyclohexylene is preferred.

In the case where m ⁱ¹ is 1, A ⁱ¹ represents a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom.

When m ⁱ¹ is 2 and A ⁱ¹ is a complex number, A ⁱ¹ may be the same or different, and the same is preferable. Further, in the case where m ⁱ¹ is 2, it is preferred that A ⁱ¹ is a 1,4-cyclohexylene group.

In other words, the compound of the above formula (i) contains at least one compound represented by the following formula (i-2) and at least one of the following formula (i-). 1) The compound represented is more preferred.

(Wherein, R ⁱ¹ represents the general formula (i) in the same meaning of R ^i1, X ⁱ¹ represents the general formula (i) in the same sense X ^i1).

In the above formula (i-2), R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-contiguous -CH ₂ - groups of the alkyl group may independently pass through -CH=CH. -, -C≡C-, -O-, -CO-, -COO- or -OCO-.

In the case of an alkyl group having 1 to 8 carbon atoms, a linear alkyl group or a linear alkenyl group having 1 to 8 carbon atoms is preferred, and a linear alkane having 1 to 5 carbon atoms is preferred. A base or a linear alkenyl group having 1 to 5 carbon atoms is preferred, methyl or ethyl The structure of the group, propyl group, butyl group, pentyl group or the following is particularly preferred.

(wherein the ring structure is bonded to the right end).

In the case where the improvement of the reaction rate is important, an alkenyl group is preferred, and in the case of reliability in consideration of a voltage holding ratio or the like in the case of forming a liquid crystal composition, an alkyl group is preferred.

X ¹¹ hydrogen atom or fluorine atom is preferred, and compatibility with other compounds is emphasized (when the liquid crystal composition does not crystallize or separate at a low temperature), a hydrogen atom is preferred, and Δ ε is emphasized. When the value is small, a fluorine atom is preferred.

In the above formula (i-2), X ⁱ¹ represents a hydrogen atom, a fluorine atom or a chlorine atom, and a hydrogen atom or a fluorine atom is preferred.

The compound represented by the above formula (i-2) can be exemplified by the following compounds.

The kind of the compound which can be combined is not particularly limited, but it is preferable to contain at least three such compounds, and it is preferable to contain three or four kinds, and it contains 3 Kind to be better. Further, the compound having such a structure must be adjusted in solubility to adjust the content, and the lower limit of the content of the compound represented by the formula (i-2.2) is 1% by mass based on the total amount of the composition of the present invention. Preferably, 2% by mass is preferable, the upper limit is 20% by mass, preferably 15% by mass, preferably 10% by mass, and preferably 8% by mass. The lower limit of the content of the compound represented by the formula (i-2.1) is preferably 1% by mass, preferably 2% by mass, and preferably 3% by mass based on the total amount of the composition of the present invention. The mass % is preferably 6% by mass, the upper limit is 20% by mass, preferably 15% by mass, preferably 13% by mass, preferably 12% by mass, and 10% by mass. good. The lower limit of the content of the compound represented by the formula (i-2.3) is preferably 1% by mass, preferably 2% by mass, and preferably 3% by mass, based on the total amount of the composition of the present invention. The mass % is preferably 6% by mass, the upper limit is 20% by mass, preferably 15% by mass, preferably 13% by mass, preferably 12% by mass, and 10% by mass. Preferably, 8 mass% is preferred. The lower limit of the content of the compound represented by the formula (i-2.4) is preferably 1% by mass, preferably 2% by mass, and preferably 3% by mass based on the total amount of the composition of the present invention. The limit is preferably 20% by mass, preferably 15% by mass, preferably 10% by mass, preferably 8% by mass, preferably 6% by mass, and preferably 5% by mass.

In the above formula (i-1), R ⁱ¹ and X ⁱ¹ can be exemplified by the same as those exemplified in the above formula (i-2).

The compound represented by the above formula (i-1) can be exemplified by the following compounds.

Further, as the compound represented by the above formula (i), the following compounds can be exemplified.

Among the above compounds, the compound represented by the formula (i-1.10) and the compound represented by the formula (i-3.10) are preferred, and the compound represented by the formula (i-1.10) is particularly preferred.

In the composition of the present invention, the compound represented by the above formula (i) may be used singly, but in view of compatibility with other compounds, it is more preferable to use two or more kinds. Two or more types of the following formula (i-1) The compound represented by the formula (i-2) is preferably used, and a compound represented by the formula (i-1) and a compound of the formula (i-2) are preferably used. The compounds indicated are also preferred.

A combination of a compound represented by the formula (i-2.1), a compound represented by the formula (i-2.2) and a compound represented by the formula (i-1.7) is preferred, and a compound represented by the formula (i-2.1), a formula A combination of the compound represented by (i-2.2) and the compound represented by the formula (i-2.4) is preferred, the compound represented by the formula (i-2.1), the compound represented by the formula (i-2.3), and the formula ( A combination of the compounds represented by i-1.10) is preferred.

The lower limit of the content of the compound represented by the formula (i) is preferably 2% by mass, preferably 5% by mass, more preferably 7% by mass, based on the total amount of the composition of the present invention, and 8 mass%. % is more preferable, 10% by mass is more preferable, and the upper limit is preferably 30% by mass, more preferably 25% by mass, more preferably 23% by mass, and even more preferably 20% by mass.

The lower limit of the content of the compound represented by the formula (i-2.1) is preferably 1% by mass, more preferably 2% by mass, and the upper limit is 13% by mass based on the total amount of the composition of the present invention. Preferably, 10% by mass is preferred.

The lower limit of the content of the compound represented by the formula (i-2.2) is preferably 1% by mass, more preferably 2% by mass, and the upper limit is 12% by mass based on the total amount of the composition of the present invention. Preferably, 10% by mass is preferred.

The lower limit of the content of the compound represented by the formula (i-2.3) is preferably 1% by mass, preferably 2% by mass, and preferably 3% by mass, based on the total amount of the composition of the present invention. The mass % is preferable, the upper limit value is preferably 10% by mass, and the 8% by mass is preferable.

The lower limit of the content of the compound represented by formula (i-2.4), relative to The total amount of the composition of the present invention is preferably 1% by mass, preferably 2% by mass, more preferably 3% by mass, and the upper limit is 7% by mass, preferably 5% by mass.

The lower limit of the content of the compound represented by the formula (i) is preferably 8 mass%, more preferably 10 mass%, more preferably 12 mass%, and 13 mass, based on the total amount of the composition of the present invention. % is preferable, an upper limit is preferably 30% by mass, 27% by mass is preferred, and 25% by mass is preferred.

With respect to a preferred combination of the compounds represented by the formula (i), the compound represented by the formula (i-1.10), the compound represented by the formula (i-2.1) and the compound represented by the formula (i-2.2) a combination of a compound represented by the formula (i-2.4), a compound represented by the formula (i-2.1), and a compound represented by the formula (i-2.2), and a compound represented by the formula (i-1.10). A combination of the compound represented by the formula (i-2.1) and the compound represented by the formula (i-2.3) is preferred.

In the case of a combination of a compound represented by the formula (i-1.10), a compound represented by the formula (i-2.1), and a compound represented by the formula (i-2.2), the lower limit of the total content of the compounds With respect to the total amount of the composition of the present invention, 8% by mass is preferred, 10% by mass is preferred, 12% by mass is preferred, 15% by mass is preferred, and the upper limit is preferably 30% by mass. 27% by mass is preferred, and 25% by mass is preferred. In the case of a combination of a compound represented by the formula (i-2.4), a compound represented by the formula (i-2.1), and a compound represented by the formula (i-2.2), the lower limit of the total content of the compounds With respect to the total amount of the composition of the present invention, 5% by mass is preferred, 7% by mass is preferred, 10% by mass is preferred, 13% by mass is preferred, and the upper limit is preferably 25% by mass. 20% by mass is preferred, and 18% by mass is preferred. 16% by mass is preferred. In the case of a combination of a compound represented by the formula (i-1.10), a compound represented by the formula (i-2.1), and a compound represented by the formula (i-2.3), the lower limit of the total content of the compounds With respect to the total amount of the composition of the present invention, 5% by mass is preferred, 7% by mass is preferred, 10% by mass is preferred, 13% by mass is preferred, and 15% by mass is preferred, and upper limit is preferred. 30% by mass is preferred, 25% by mass is preferred, 23% by mass is preferred, 21% by mass is preferred, and 19% by mass is preferred.

The liquid crystal composition of the present invention may contain one or more types of compounds represented by the formula (L).

(wherein R ^L1 and R ^L2 are each independently represented by an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently pass through -CH=CH -, -C≡C-, -O-, -CO-, -COO- or -OCO-substituted, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently represented as selected from the following The basis of the composition: (a) 1,4-cyclohexylene (the one present in the group -CH ₂ - or the non-contiguous two or more -CH ₂ - may be substituted with -O-); b) 1,4-phenylene (one of which is present in the group -CH= or two or more non-contiguous -CH= may be substituted with -N=), the above-mentioned group (a), group ( b) each independently indicates that it may be substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 are each independently represented as a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, - CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-, OL is 2 or 3 and L ^L2 is a complex number. L ^L2 may be the same or different. OL is 2 or 3 and B ^L3 is a complex number. B ^L3 may be the same or may be phase Except, except for the compound represented by the formula (i).

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types. Further, another embodiment of the present invention has four types. Further, another embodiment of the present invention has five types. Further, another embodiment of the present invention has six types. Further, another embodiment of the present invention has seven types. Further, another embodiment of the present invention has eight types. Further, another embodiment of the present invention is nine types. Further, another embodiment of the present invention is 10 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (L) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the drip mark, and the afterimage. The performance requested by (burn-in), dielectric anisotropy, etc. is appropriately adjusted.

The lower limit of the preferred content is, for example, 1% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or other embodiments of the invention are 10%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 50%. Further, another embodiment of the present invention is 55%. Further, another embodiment of the present invention is 60%. Further, another embodiment of the present invention is 65%. Further, another embodiment of the present invention is 70%. Also, the present invention Other embodiments are 75%. Further, another embodiment of the present invention is 80%.

Further, the upper limit of the preferred content is, for example, 95% in the form of one of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 85%. Further, another embodiment of the present invention is 75%. Further, another embodiment of the present invention is 65%. Further, another embodiment of the present invention is 55%. Further, another embodiment of the present invention is 45%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 25%.

In the case where the viscosity of the liquid crystal composition of the present invention is kept low and the reaction rate is fast, it is preferable that the lower limit is high and the upper limit is high. Further, in the case where the liquid crystal composition of the present invention has a Tni which is high in value and excellent in temperature stability, it is preferable that the lower limit is high and the upper limit is high. Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable to lower the above lower limit and the upper limit is lower.

R ^L1 and R ^{L2 are} bonded to each other in the form of a phenyl group (aromatic), and have a linear alkyl group having 1 to 5 carbon atoms and a linear carbon number of 1 to 4 (or The alkoxy group of the above) and the alkenyl group having 4 to 5 carbon atoms are preferred, and the bonded ring structure is cyclohexane, megbrane and In the case of a saturated ring structure such as an alkane or the like, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 (or more) carbon atoms, and a linear carbon atom. The number of 2 to 5 alkenyl groups is preferred.

When the compound represented by the formula (L) is required to satisfy the chemical stability of the liquid crystal composition, it is preferred that the molecule does not have a chlorine atom in the molecule.

The compound represented by the formula (L) is preferably a compound selected from the group consisting of compounds represented by the formula (I).

R ¹¹ -A ¹¹ -A ¹² -R ¹² (I) (wherein R ¹¹ and R ¹² are each independently represented by an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or a carbon atom; The number of 2 to 5 alkenyl groups, A ¹¹ and A ¹² are each independently represented by 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1. , 4-phenylene).

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types. Further, another embodiment of the present invention has four types. Further, another embodiment of the present invention has five types. Further, another embodiment of the present invention is six or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the drip mark, and the afterimage. The properties sought for dielectric anisotropy and the like are suitably adjusted.

The lower limit of the preferred content is, for example, 3% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 15%. Further, another embodiment of the present invention is 18%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 29%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 42%. Also, the present invention The other embodiment is 47%. Further, another embodiment of the present invention is 53%. Further, another embodiment of the present invention is 56%. Further, another embodiment of the present invention is 60%. Further, another embodiment of the present invention is 65%.

Further, the upper limit of the preferred content is, for example, 75% in the form of one of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 65%. Further, another embodiment of the present invention is 55%. Further, another embodiment of the present invention is 50%. Further, another embodiment of the present invention is 45%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 30%.

In the case where the viscosity of the liquid crystal composition of the present invention is kept low and the reaction rate is fast, it is preferable that the lower limit is high and the upper limit is high. Further, in the case where the liquid crystal composition of the present invention has a Tni which is high in value and excellent in temperature stability, it is preferable that the lower limit is moderate and the upper limit is moderate. Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable to lower the above lower limit and the upper limit is lower.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-1).

(Wherein, R ¹¹ and R ¹² each independently represent carbon atoms of an alkyl group having 1 to 5, carbon atoms, an alkoxy group or a 1 to 5 carbon atoms of the alkenyl group having 2 to 5).

The types of compounds that can be combined are not particularly limited, but they are required to be low temperature. The desired properties such as solubility, transfer temperature, electrical reliability, and complex refractive index are suitably used in combination. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types. Further, another embodiment of the present invention has four types. Further, another embodiment of the present invention is five or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the instillation trace, The performance desired for the afterimage, dielectric anisotropy, etc. is appropriately adjusted.

The lower limit of the preferred content is, for example, 3% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 15%. Further, another embodiment of the present invention is 18%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 29%. Further, another embodiment of the present invention is 31%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 43%. Further, another embodiment of the present invention is 47%. Further, another embodiment of the present invention is 50%. Further, another embodiment of the present invention is 53%. Further, another embodiment of the present invention is 56%.

Further, the upper limit of the preferable content is, for example, 70% in the form of one of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 60%. Further, another embodiment of the present invention is 50%. Further, another embodiment of the present invention is 45%. Further, another embodiment of the present invention is 40%. Further, other embodiments of the present invention It is 35%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 26%.

In the case where the viscosity of the liquid crystal composition of the present invention is kept low and the reaction rate is fast, it is preferable that the lower limit is high and the upper limit is high. Further, in the case where the liquid crystal composition of the present invention has a Tni which is high in value and excellent in temperature stability, it is preferable that the lower limit is moderate and the upper limit is moderate. Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable to lower the above lower limit and the upper limit is lower.

Further, the compound represented by the formula (I-1) is preferably a compound selected from the group consisting of the compounds represented by the formula (I-1-1).

(wherein R ^{12 is} each independently represented by an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-1) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, and the instillation. The properties sought for traces, afterimages, dielectric anisotropy, etc. are suitably adjusted. The lower limit of the preferred content is, for example, 2% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 4%. Further, another embodiment of the present invention is 7%. Further, another embodiment of the present invention is 11%. Further, another embodiment of the present invention is 13%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 17%. Further, other embodiments of the present invention The state is 20%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 32%. Further, another embodiment of the present invention is 35%.

Further, the upper limit of the preferred content is, for example, 60% in the form of one of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 50%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%.

Further, the compound represented by the formula (I-1-1) is preferably a compound selected from the group consisting of the compounds represented by the formulae (1.1) to (1.3), and is represented by the formula (1.2) or the formula (1.3). The compound is preferred, and in particular, the compound represented by the formula (1.3) is preferred.

The compound represented by the formula (1.2) or the formula (1.3) is used singly, and the content of the compound represented by the formula (1.2) is effective for the improvement of the reaction rate, and the content of the compound represented by the formula (1.3) In the range shown below, it is preferable because it can produce a liquid crystal composition having high electrical and optical reliability which is fast in reaction speed.

The compound represented by the formula (1.3) is preferably contained in an amount of 5% by mass or more, and more preferably 7% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, it is more preferably 9% by mass or more, more preferably 11% by mass or more, and particularly preferably 15% by mass or more. Further, the ratio which can be most contained is preferably 35 mass% or less, more preferably 25% by mass or less, and still more preferably 20 mass% or less.

Further, the compound represented by the formula (I-1) is preferably a compound selected from the group of compounds represented by the formula (I-1-2).

(wherein R ^{12 is} each independently represented by 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 type of the compound which can be combined is not particularly limited, but it is suitably used in combination with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-2) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, and the instillation. The properties sought for traces, afterimages, dielectric anisotropy, etc. are suitably adjusted. The lower limit of the preferred content is, for example, 7% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 15%. Further, another embodiment of the present invention is 18%. Further, another embodiment of the present invention is 21%. Further, another embodiment of the present invention is 24%. Further, another embodiment of the present invention is 27%. also, Another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 34%. Further, another embodiment of the present invention is 37%. Further, another embodiment of the present invention is 41%. Further, another embodiment of the present invention is 47%. Further, another embodiment of the present invention is 50%.

Further, the upper limit of the preferred content is, for example, 60% of the embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 55%. Further, another embodiment of the present invention is 45%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 20%.

Further, the compound represented by the formula (I-1-2) is preferably a compound selected from the group consisting of the compounds represented by the formulae (2.1) to (2.4), and represented by the formulae (2.2) to (2.4). The compound is preferred. In particular, the compound represented by the formula (2.2) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention. Further, when Tni having a higher reaction rate is obtained, a compound represented by the formula (2.3) or the formula (2.4) is preferably used. When the content of the compound represented by the formula (2.3) and the formula (2.4) is used to improve the solubility at a low temperature, it is not preferable to form 30% or more.

In the liquid crystal composition of the present invention, the compound represented by the formula (2.2) The content is preferably 5% by mass or more, more preferably 10% by mass, more preferably 14% by mass or more, and still more preferably 17% by mass or more, and more preferably 19% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, 22% by mass or more is more preferable, 25 mass% or more is more preferable, 27 mass% or more is more preferable, and 30% by mass or more is particularly preferable. Further, the ratio which can be most contained is preferably 55% by mass or less, more preferably 50% by mass or less, more preferably 45% by mass or less, and particularly preferably 40% by mass or less.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (2.5) having a structure similar to the compound represented by the formula (I-1-2).

The content of the compound represented by the formula (2.5) is preferably adjusted depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and is relative to the total of the liquid crystal composition of the present invention. The amount of the compound is preferably 11% by mass or more, more preferably 15% by mass, more preferably 23% by mass, more preferably 26% by mass or more, and particularly preferably 28% by mass or more.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-2).

(wherein R ¹³ and R ¹⁴ are each independently represented by an alkyl group having 1 to 5 carbon atoms).

The type of the compound which can be combined is not particularly limited, but it is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of compound used, for example, as this One embodiment of the invention is of one type. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-2) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the instillation trace, The performance desired for the afterimage, dielectric anisotropy, etc. is appropriately adjusted. The lower limit of the preferred content is, for example, 3% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 4%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 38%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 42%. Further, another embodiment of the present invention is 45%. Further, another embodiment of the present invention is 47%. Further, another embodiment of the present invention is 50%.

Further, the upper limit of the preferred content is, for example, 60% in the form of one of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 55%. Further, another embodiment of the present invention is 45%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 5%. Further, the compound represented by the formula (I-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (3.1) to (3.4), and the formula (3.1), the formula (3.3) or the formula (3.4) The compound represented is preferred. In particular, the compound represented by the formula (3.2) particularly improves the liquid crystal of the invention. The reaction rate of the composition is preferred. Further, when Tni having a higher reaction rate is obtained, a compound represented by the formula (3.3) or the formula (3.4) is preferably used. When the content of the compound represented by the formula (3.3) and the formula (3.4) is used to improve the solubility at a low temperature, it is not preferable to prepare 20% or more.

Further, the compound represented by the formula (I-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (3.1) to (3.4), and the formula (3.1), the formula (3.3) and/or the formula. The compound represented by (3.4) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (3.3) is preferably 2% by mass or more, more preferably 3% by mass, and 4% by mass based on the total amount of the liquid crystal composition of the present invention. More than % is more preferable, 10% by mass or more is more preferable, 12% by mass or more is more preferable, 14% by mass or more is more preferable, 16 or more mass is more preferable, 20 or more mass is more preferable, and 23% by mass or more is more. Preferably, 26% by mass or more is more preferable, and 30% by mass or more is particularly preferable. In addition, 40% by mass or less is preferable, and 37% by mass or less is more preferable, and 34% by mass or less is more preferable, and 32% by mass or less is particularly preferable.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-3).

(wherein R ¹³ represents an alkyl group having 1 to 5 carbon atoms, and R ¹⁵ represents an alkoxy group having 1 to 4 carbon atoms).

The type of the compound which can be combined is not particularly limited, but may be combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-3) is dependent on the solubility at low temperature, the transfer temperature, electrical reliability, complex refractive index, process suitability, dripping marks, The performance desired for the afterimage, dielectric anisotropy, etc. is appropriately adjusted. The lower limit of the preferred content is, for example, 3% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 4%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 38%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 42%. Further, another embodiment of the present invention is 45%. Further, another embodiment of the present invention is 47%. Further, another embodiment of the present invention is 50%.

Further, the upper limit of the preferred content is, for example, 60% in the form of one of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 55%. Further, another embodiment of the present invention is 45%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Also, the present invention The other embodiment is 5%.

When the solubility in low temperature is emphasized, the effect is high when the content is set to be large, and conversely, when the reaction rate is emphasized, when the content is set to be small, the effect is high. Further, in the case of improving the characteristics of the drip mark or afterimage, it is preferred to set the content range to the middle value.

Further, the compound represented by the formula (I-3) is preferably a compound selected from the group consisting of compounds represented by the formulae (4.1) to (4.3), and a compound represented by the formula (4.3) is preferred.

The compound represented by the formula (4.3) is preferably 2% by mass or more, more preferably 4% by mass, more preferably 6% by mass or more, and 8% by mass or more, based on the total amount of the liquid crystal composition of the present invention. More preferably, 10% by mass or more is more preferable, 12% by mass or more is more preferable, 14% or more is more preferable, 16 or more masses is more preferable, 18% by mass or more is more preferable, and 20% by mass or more is more preferable, 22 More than % by mass is particularly good. In addition, 30% by mass or less is preferable, and 25% by mass or less is more preferable, and 24% by mass or less is more preferable, and 23% by mass or less is particularly preferable.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-4).

(wherein R ¹¹ and R ¹² each independently represent 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 type of the compound which can be combined is not particularly limited, but may be combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-4) is dependent on the solubility at low temperature, the transfer temperature, electrical reliability, complex refractive index, process suitability, dripping marks, The performance desired for the afterimage, dielectric anisotropy, etc. is appropriately adjusted. The lower limit of the preferred content is, for example, 3% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 5%. Further, another embodiment of the present invention is 6%. Further, another embodiment of the present invention is 8%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 12%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 40%.

Further, the upper limit of the preferred content is 50% with respect to the total amount of the liquid crystal composition of the present invention, for example, one of the forms of the present invention. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 5%.

In the case where a high complex refractive index is obtained, when the content is set to be large, the effect is high. Conversely, when the high Tni is emphasized, when the content is set to be small, the effect is high. Further, in the case of improving the characteristics of the drip mark or afterimage, it is preferable to set the content range to the intermediate value.

Further, the compound represented by the formula (I-4) is preferably a compound selected from the group consisting of the compounds represented by the formulae (5.1) to (5.4), and a compound represented by the formula (5.2) to the formula (5.4). It is better.

The compound represented by the formula (5.4) is preferably 2% by mass or more, more preferably 4% by mass, more preferably 6% by mass or more, and 8% by mass or more, based on the total amount of the liquid crystal composition of the present invention. More preferably, 10% by mass or more is particularly preferred. In addition, 30% by mass or less is preferable, and 25% by mass or less is more preferable, and 20% by mass or less is more preferable, and 18% by mass or less is particularly preferable.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-5).

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound that can be combined is not particularly limited, but it can be affected by low temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like. The combination of the requested performance. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-5) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the instillation trace, The performance desired for the afterimage, dielectric anisotropy, etc. is appropriately adjusted. The lower limit of the preferred content is, for example, 1% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 5%. Further, another embodiment of the present invention is 8%. Further, another embodiment of the present invention is 11%. Further, another embodiment of the present invention is 13%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 17%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 40%.

Further, the upper limit of the preferred content is, for example, 50% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 5%.

Pay attention to the solubility of low temperature. When the content is set to a large amount, the effect is high. Conversely, when the reaction rate is emphasized, the content is set to When there is little, the effect is high. Further, in the case of improving the characteristics of the drip mark or afterimage, it is preferable to set the content range to the intermediate value.

Further, the compound represented by the formula (I-5) is preferably a compound selected from the group consisting of compounds represented by the formulae (6.1) to (6.6), and the formula (6.3), the formula (6.4) and the formula (6.6). The compound represented is preferred.

For example, the compound represented by the formula (6.6) is preferably 2% by mass or more, more preferably 4% by mass, more preferably 5% by mass or more, and 6% by mass based on the total amount of the liquid crystal composition of the present invention. The above is more preferable, 9 mass% or more is more preferable, 12 mass% or more is more preferable, 14 mass% or more is more preferable, 16 mass% or more is more preferable, 18 mass% or more is more preferable, and 20 mass% or more is more preferable. 22% by mass or more is particularly good. In addition, 30% by mass or less is preferable, and 25% by mass or less is more preferable, and 24% by mass or less is more preferable, and 23% by mass or less is particularly preferable.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (6.7) to the formula (6.9).

It is preferable to adjust the content of the compound represented by the formula (6.7) to the formula (6.9) in view of the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and it is preferable with respect to the present invention. The total amount of the liquid crystal composition is preferably 2% by mass or more, more preferably 3% by mass, more preferably 4% by mass, more preferably 5% by mass, and particularly preferably 7% by mass or more. .

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-6).

(wherein R ¹¹ and R ¹² are each independently represented by an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ¹¹ and X ¹² independently represents a fluorine atom or a hydrogen atom, any one of X ¹¹ or X ¹² is one of a fluorine atom).

The compound represented by the formula (I-6) is preferably 2% by mass or more, more preferably 4% by mass, more preferably 5% by mass or more, and 6 parts by mass based on the total amount of the liquid crystal composition of the present invention. More preferably, more than 9% by mass, more preferably 9% by mass or more, more preferably 12% by mass or more, more preferably 14 or more, more preferably 16 or more, more preferably 18% by mass or more, and 20% by mass or more. Good, 22% by mass or more is particularly good. In addition, 30% by mass or less is preferable, and 25% by mass or less is more preferable, and 24% by mass or less is more preferable, and 23% by mass or less is particularly preferable.

Further, the compound represented by the formula (I-6) is represented by the formula (7.1). Compounds are preferred.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-7).

(wherein R ¹¹ and R ¹² are each independently represented by 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 is} independently represented by Fluorine or chlorine atom).

The compound represented by the formula (I-7) is preferably 1% by mass or more, more preferably 2% by mass, more preferably 3% by mass or more, and 4% by mass based on the total amount of the liquid crystal composition of the present invention. % or more is more preferable, 6 mass% or more is more preferable, 8 mass% or more is more preferable, 10 mass% or more is more preferable, 12 mass or more is more preferable, 15 mass% or more is more preferable, and 18 mass% or more is more preferable. Good, 21% by mass or more is especially good. Further, the ratio which can be most contained is preferably 30% by mass or less, more preferably 25% by mass or less, more preferably 24% by mass or less, and particularly preferably 22% by mass or less.

Further, the compound represented by the formula (I-7) is preferably a compound represented by the formula (8.1).

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-8).

(Wherein, R ¹⁶ and R ¹⁷ each independently represents a carbon atom of an alkenyl group having 2 to 5).

The type of the compound which can be combined is not particularly limited, but it is preferable to combine 1 to 3 types in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (I-8) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the instillation trace, the afterimage, the dielectric anisotropy, and the like. The performance of the liquid crystal composition of the present invention is preferably 5% by mass or more, more preferably 10% by mass, more preferably 15% by mass or more, and still more preferably 20% by mass or more. 25 mass% or more is more preferable, 30 mass% or more is more preferable, 35 mass% or more is more preferable, 40 mass% or more is more preferable, 45 mass% or more is more preferable, 50 mass% or more is more preferable, and 55 mass% or more is more preferable, 55 mass% or more. It is especially good. Further, the ratio which can be most contained is preferably 65 mass% or less, more preferably 60 mass% or less, more preferably 58 mass% or less, and particularly preferably 56 mass% or less.

Further, the compound represented by the formula (I-8) is preferably a compound selected from the group consisting of compounds represented by the formulae (9.1) to (9.10), and the formula (9.2), the formula (9.4) and the formula (9.7) The compound represented is preferred.

Further, the compound represented by the formula (L) is preferably a compound selected from the compounds represented by the formula (II), for example.

(R ²¹ and R ²² are each independently represented by 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 a 1,4-stretched ring. Hexyl or 1,4-phenylene, Q ² represents a single bond, -COO-, -CH ₂ -CH ₂ - or -CF ₂ O-).

The type of the compound which can be combined is not particularly limited, but may be combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, still another embodiment of the present invention has three types. Further, another embodiment of the present invention is four or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (II) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the drip mark, and the afterimage. The properties sought for dielectric anisotropy and the like are suitably adjusted. a lower limit of the preferred content, relative to the total amount of the liquid crystal composition of the present invention, for example, as An embodiment of the present invention is 3%. Or another embodiment of the invention is 5%. Further, another embodiment of the present invention is 7%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 14%. Further, another embodiment of the present invention is 16%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 23%. Further, another embodiment of the present invention is 26%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 40%.

Further, the upper limit of the preferred content is, for example, 50% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 5%.

Further, the compound represented by the formula (II) is preferably a compound selected from the group consisting of compounds represented by the formula (II-1), for example.

(R ²¹ and R ²² are each independently represented by 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 formula (II-1) is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and 4% by mass or more is preferable. Preferably, 8 mass% or more is more preferable, and 12 mass% or more is more preferable. Further, in terms of the ratio which can be most contained, 24% by mass or less is preferable, and 18% by mass or less is more preferable. 14% by mass or less is more preferable.

Further, the compound represented by the formula (II-1) is preferably a compound represented by the formula (10.1) and the formula (10.2), for example.

Further, the compound represented by the formula (II) is preferably a compound selected from the group of compounds represented by the formula (II-2), for example.

(R ²³ represents an alkenyl group having 2 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound which can be combined is not particularly limited, but may be combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or another embodiment of the present invention is two or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (II-2) is dependent on the solubility at low temperature, the transfer temperature, electrical reliability, complex refractive index, process suitability, dripping marks, The performance desired for the afterimage, dielectric anisotropy, etc. is appropriately adjusted. The lower limit of the preferred content is, for example, 3% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or another embodiment of the invention is 5%. Further, another embodiment of the present invention is 7%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 14%. Further, another embodiment of the present invention is 16%. Also, this hair Other embodiments of the Ming are 20%. Further, another embodiment of the present invention is 23%. Further, another embodiment of the present invention is 26%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 40%.

Further, the upper limit of the preferred content is, for example, 50% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 5%.

Further, the compound represented by the formula (II-2) is preferably a compound represented by the formula (11.1) to the formula (11.3), for example.

The compound represented by the formula (11.1) may be contained in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and may also contain a compound represented by the formula (11.2). Both the compound represented by the formula (11.1) and the compound represented by the formula (11.2) may contain all the compounds represented by the formula (11.1) to the formula (11.3). The content of the compound represented by the formula (11.1) or the formula (11.2) is preferably 3% by mass, more preferably 5% by mass or more, and more preferably 7% by mass or more based on the total amount of the liquid crystal composition of the present invention. Good, 9 mass% or more is better, 11 quality More than % is more preferable, 12% by mass or more is more preferable, 13% by mass or more is more preferable, 18% by mass or more is more preferable, and 21% by mass or more is particularly preferable. Further, the ratio which can be most contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. Further, the content of the compound represented by the formula (11.2) is preferably 3% by mass, more preferably 5% by mass or more, even more preferably 8% by mass or more, based on the total amount of the liquid crystal composition of the present invention. The mass% or more is more preferably 12% by mass or more, more preferably 15% by mass or more, more preferably 17% by mass or more, and most preferably 19% by mass or more. Further, the ratio which can be most contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. In the case where both the compound represented by the formula (11.1) and the compound represented by the formula (11.2) are contained, the total of the two compounds is preferably 15% by mass or more based on the total amount of the liquid crystal composition of the present invention. 19% by mass or more is more preferable, 24% by mass or more is more preferable, and 30% by mass or more is particularly preferable. Further, the ratio which can be most contained is preferably 45% by mass or less, more preferably 40% by mass or less, and still more preferably 35% by mass or less.

Further, the compound represented by the formula (II) is preferably a compound selected from the group consisting of compounds represented by the formula (II-3), for example.

(R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound that can be combined is not particularly limited, but one or three kinds of these compounds are included in the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. Preferably.

The content of the compound represented by the formula (II-3) is necessary to be low The properties required for temperature solubility, transfer temperature, electrical reliability, complex refractive index, process suitability, drip marks, afterimages, dielectric anisotropy, etc. are appropriately adjusted. With respect to the lower limit of the preferred content, for example, 2% is preferred, 5% is more preferred, 8% is more preferred, and 11% is more preferred, relative to the total amount of the liquid crystal composition of the present invention. % is better, 17% is better, 20% is better, 23% is better, 26% is better, and 29% is better. Further, in terms of the upper limit of the preferable content, for example, 45% is preferable, 40% is more preferable, 35% is more preferable, and 30% is more preferable with respect to the total amount of the liquid crystal composition of the present invention. 25% is better, 20% is better, 15% is better, and 10% is better.

Further, the compound represented by the formula (II-3) is preferably a compound represented by the formula (12.1) to the formula (12.3), for example.

The compound represented by the formula (12.1) may be contained in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and may also contain a compound represented by the formula (12.2). Both the compound represented by the formula (12.1) and the compound represented by the formula (12.2) are contained. The content of the compound represented by the formula (12.1) or the formula (11.2) is preferably 3% by mass, more preferably 5% by mass or more, and more preferably 7% by mass or more based on the total amount of the liquid crystal composition of the present invention. Preferably, 9 mass% or more is more preferable, 11 mass% or more is more preferable, 12 mass% or more is more preferable, 13 mass% or more is more preferable, 18 mass% or more is more preferable, and 21 mass% or more is particularly preferable. also The ratio which can be most contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. Further, the content of the compound represented by the formula (12.2) is preferably 3% by mass, more preferably 5% by mass or more, and even more preferably 8% by mass or more, based on the total amount of the liquid crystal composition of the present invention. The mass% or more is more preferably 12% by mass or more, more preferably 15% by mass or more, more preferably 17% by mass or more, and most preferably 19% by mass or more. Further, the ratio which can be most contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. In the case where both the compound represented by the formula (12.1) and the compound represented by the formula (12.2) are contained, the total of the two compounds is preferably 15% by mass or more based on the total amount of the liquid crystal composition of the present invention, and the mass is 19% by mass. More than % is more preferable, 24% by mass or more is more preferable, and 30% by mass or more is particularly preferable. Further, the ratio which can be most contained is preferably 45% by mass or less, more preferably 40% by mass or less, and still more preferably 35% by mass or less.

In addition, the content of the compound represented by the formula (12.3) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more based on the total amount of the liquid crystal composition of the present invention. . Further, the ratio which can be most contained is preferably 2% by mass or less, more preferably 1% by mass or less, and still more preferably 0.5% by mass or less. The compound represented by the formula (12.3) may be an optically active compound.

Further, the compound represented by the formula (II-3), for example, a compound selected from the group of compounds represented by the formula (II-3-1) is preferred.

(R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁶ represents an alkoxy group having 1 to 4 carbon atoms).

The type of the compound that can be combined is not particularly limited, but one or three kinds of these compounds are included in the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. Preferably.

The content of the compound represented by the formula (II-3-1) is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and is preferably 1% by mass or more. More preferably, 4% by mass or more is more preferable, and 8% by mass or more is more preferably. Further, the ratio which can be most contained is preferably 24% by mass or less, more preferably 18% by mass or less, and still more preferably 14% by mass or less.

Further, the compound represented by the formula (II-3-1) is preferably a compound represented by the formula (13.1) to the formula (13.4), and particularly preferably a compound represented by the formula (13.3).

Further, the compound represented by the formula (II) is preferably a compound selected from the group consisting of compounds represented by the formula (II-4), for example.

(R ²¹ and R ²² are each independently represented by 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).

Only one of these compounds may be contained, or two or more types may be contained, but it is preferable to suitably combine them in accordance with the desired properties. Groupable The type of the compound to be combined is not particularly limited, but one or two types of these compounds are included in the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. Good, including 1 ~ 3 types is especially good.

The content of the compound represented by the formula (II-4) is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 3% by mass or more, based on the total amount of the liquid crystal composition of the present invention. 4% by mass or more is more preferable, and 5% by mass or more is particularly preferable. Further, the ratio which can be most contained is preferably 15% by mass or less, more preferably 12% by mass or less, and still more preferably 7% by mass or less.

Further, the compound represented by the formula (II-4), for example, a compound represented by the formula (14.1) to the formula (14.5) is preferable, particularly, the compound represented by the formula (14.2) or/and the formula (14.5). It is better.

Further, the compound represented by the formula (L) is preferably a compound selected from the group of compounds represented by the formula (III).

(R ³¹ and R ³² are each independently represented by 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 formula (III) is preferably 3% by mass or more, and preferably 5% by mass based on the total amount of the liquid crystal composition of the present invention in consideration of the solubility or the complex refractive index. The above is more preferable, and it is more preferably contained in an amount of 7 mass% or more. Further, the ratio which can be most contained is preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less.

Further, the compound represented by the formula (III) is preferably a compound represented by the formula (15.1) to the formula (15.3), and particularly preferably a compound represented by the formula (15.3).

Further, the compound represented by the formula (III) is preferably a compound selected from the group of compounds represented by the formula (III-1).

(R ³³ represents an alkenyl group having a carbon number of 2 to 5, R ³² each independently represent carbon atoms or an alkyl group having 1 to 5 carbon atoms of the alkoxy group having 1 to 4).

The content is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and is preferably 4% by mass or more, more preferably 6% by mass or more, and 10% by mass. The above is even better. Moreover, in terms of the ratio that can be most contained, 23% by mass or less is comparatively Preferably, 18% by mass or less is more preferable, and 13% by mass or less is more preferably.

The compound represented by the formula (III-1), for example, a compound represented by the formula (16.1) or the formula (16.2) is preferred.

Further, the compound represented by the formula (III) is preferably a compound selected from the group of compounds represented by the formula (III-2).

(R ³¹ represents an alkyl group having 1 to 5 carbon atoms, and R ³⁴ represents an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (III-2) can be preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index, and 4% by mass or more is Preferably, 6% by mass or more is more preferable, and 10% by mass or more is more preferably. Further, the ratio which can be most contained is preferably 23% by mass or less, more preferably 18% by mass or less, and still more preferably 13% by mass or less.

Further, the compound represented by the formula (III-2) is preferably a compound selected from the group consisting of the compounds represented by the formula (17.1) to the formula (17.3), and particularly the compound represented by the formula (17.3). good.

Further, the compound represented by the formula (L) is selected from the group consisting of the formula (IV). The group shown is preferred.

(wherein R ⁴¹ and R ⁴² are each independently represented by an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁴¹ and X ⁴² are each independently represented by a hydrogen atom or a fluorine atom).

The type of the compound which can be combined is not particularly limited, but it is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types. Further, another embodiment of the present invention has four types. Further, another embodiment of the present invention has five types. Further, another embodiment of the present invention is six or more types.

Further, the compound represented by the formula (IV) is preferably a compound selected from the group consisting of compounds represented by the formula (IV-1), for example.

(wherein R ⁴³ and R ⁴⁴ are each independently represented by an alkyl group having 1 to 5 carbon atoms).

The content of the compound represented by the formula (IV-1) is dependent on the solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, process suitability, drip mark, afterimage, dielectric anisotropy. The performance requested is adjusted as appropriate. The lower limit of the preferred content is, for example, 1% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 2%. Further, other implementations of the invention The form is 4%. Further, another embodiment of the present invention is 6%. Further, another embodiment of the present invention is 8%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 12%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 18%. Further, another embodiment of the present invention is 21%.

Further, in terms of the upper limit of the preferable content, for example, one embodiment of the present invention is 40% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 5%. Further, another embodiment of the present invention is 4%.

Further, the compound represented by the formula (IV-1) is preferably a compound represented by the formula (18.1) to the formula (18.9), for example.

The type of the compound which can be combined is not particularly limited, but one to three kinds of the compounds containing these are preferable, and one to four types are more preferable. Further, since the molecular weight distribution of the selected compound is also effective for solubility, for example, a compound represented by the formula (18.4) or (18.5) is selected from the compound represented by the formula (18.1) or (18.2). The compound represented by the formula (18.6) or the formula (18.7) is selected from the group consisting of one type, and the compound represented by the formula (18.8) or (18.9) is selected as the compound of the first type, and these are appropriately combined. . Among them, a compound represented by the formula (18.1), the formula (18.3) (18.4), the formula (18.6) and the formula (18.9) is preferred.

Further, the compound represented by the formula (IV) is preferably a compound selected from the group of compounds represented by the formula (IV-2), for example.

(wherein R ⁴⁵ and R ⁴⁶ are each independently represented by an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, but at least one represents an alkenyl group having 2 to 5 carbon atoms, X ⁴¹ And X ⁴² are each independently represented as a hydrogen atom or a fluorine atom).

The types of compounds that can be combined are not particularly limited, but can be low. The combination of the solubility properties of the temperature, the transfer temperature, the electrical reliability, and the complex refractive index.

The content of the compound represented by the formula (IV-2) is dependent on the solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, process suitability, drip mark, afterimage, dielectric anisotropy. The performance requested is adjusted as appropriate. With respect to the lower limit of the preferred content, for example, 0.5% is preferable, 1% is more preferable, 2% is more preferable, and 3% is more preferable with respect to the total amount of the liquid crystal composition of the present invention. 5% is better, 7% is better, 9% is better, 12% is better, 15% is better, and 20% is better. Further, in terms of the upper limit of the preferable content, for example, 40% is preferable, 30% is more preferable, 25% is more preferable, and 20% is more preferable with respect to the total amount of the liquid crystal composition of the present invention. 15% is better, 10% is better, 5% is better, and 4% is better.

Further, the compound represented by the formula (IV-2) is preferably a compound represented by the formula (19.1) to the formula (19.8), and a compound represented by the formula (19.2) is preferred.

The molecular weight distribution of the compound selected as a component of the liquid crystal composition is also effective for solubility. For example, one type of compound represented by the formula (19.1) or (19.2) is selected from the formula (19.3). Or the compound represented by the formula (19.4) is selected from the compound represented by the formula (19.5) or the formula (19.6), and the compound represented by the formula (19.7) or (19.8) is selected, and the compound of the first type is selected. These are preferably combined as preferred.

Further, the compound represented by the formula (L) is preferably a compound selected from the group represented by the formula (V).

(wherein R ⁵¹ and R ⁵² are each independently represented by 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 each of A ⁵¹ and A ⁵² Independently represented by 1,4-cyclohexylene or 1,4-phenylene, Q ⁵ represents a single bond or -COO-, and X ⁵¹ and X ⁵² are each independently represented as a fluorine atom or a hydrogen atom).

The type of the compound which can be combined is not particularly limited, but may be combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of compound used, for example as One embodiment of the present invention is one type. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types. Further, another embodiment of the present invention has four types.

The lower limit of the preferred content is, for example, 2% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 4%. Further, another embodiment of the present invention is 7%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 12%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 17%. Further, another embodiment of the present invention is 18%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 22%.

Further, in terms of the upper limit of the preferable content, for example, one embodiment of the present invention is 40% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 5%. Further, another embodiment of the present invention is 4%.

Further, the compound represented by the formula (V) is preferably a compound represented by the formula (V-1).

(wherein R ⁵¹ and R ⁵² are each independently represented by 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 each of X ⁵¹ and X ⁵² Independently expressed as a fluorine atom or a hydrogen atom).

Further, the compound represented by the formula (V-1) is preferably a compound represented by the formula (V-1-1).

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound represented by the formula (V-1-1) is preferably 1% by mass or more, more preferably 2% by mass or more, and 3% by mass or more, based on the total amount of the liquid crystal composition of the present invention. More preferably, it is particularly preferable to contain 4% by mass or more. Further, the ratio which can be most contained is preferably 15% by mass or less, more preferably 10% by mass or less, and still more preferably 8% by mass or less.

Further, the compound represented by the formula (V-1-1) is preferably a compound represented by the formula (20.1) to the formula (20.4), and a compound represented by the formula (20.2) is preferred.

Further, the compound represented by the formula (V-1) is preferably a compound represented by the formula (V-1-2).

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

a compound represented by the formula (V-1-2), relative to the liquid crystal of the present invention The total amount of the composition is preferably 1% by mass or more, more preferably 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Further, the ratio which can be most contained is preferably 15% by mass or less, more preferably 10% by mass or less, and still more preferably 8% by mass or less.

Further, the compound represented by the formula (V-1-2) is preferably a compound represented by the formula (21.1) to the formula (21.3), and a compound represented by the formula (21.1) is preferred.

Further, the compound represented by the formula (V-1) is preferably a compound represented by the formula (V-1-3).

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound represented by the formula (V-1-3) is preferably 1% by mass or more, more preferably 2% by mass or more, and 3% by mass or more, based on the total amount of the liquid crystal composition of the present invention. More preferably, it is particularly preferable to contain 4% by mass or more. Further, the ratio which can be most contained is preferably 15% by mass or less, more preferably 10% by mass or less, and still more preferably 8% by mass or less.

Further, the compound represented by the formula (V-1-3) is of the formula (22.1) to the formula (22.3) The compound represented. The compound represented by the formula (22.1) is preferred.

Further, the compound represented by the formula (V) is preferably a compound represented by the formula (V-2).

(wherein R ⁵¹ and R ⁵² are each independently represented by 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 each of X ⁵¹ and X ⁵² Independently expressed as a fluorine atom or a hydrogen atom).

The type of the compound which can be combined is not particularly limited, but may be combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or another embodiment of the present invention is two or more types.

The lower limit of the preferred content is, for example, 2% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 4%. Further, another embodiment of the present invention is 7%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 12%. Further, another embodiment of the present invention is 15%. Also, this hair Other embodiments of the Ming are 17%. Further, another embodiment of the present invention is 18%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 22%.

Further, in terms of the upper limit of the preferable content, for example, one embodiment of the present invention is 40% with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 25%. Further, another embodiment of the present invention is 20%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 5%. Further, another embodiment of the present invention is 4%.

In the case where the liquid crystal composition of the present invention has a high Tni embodiment, it is preferable to form a plurality of compounds represented by the formula (V-2), and the low viscosity embodiment is desirable. It is preferred to make the content less.

Further, the compound represented by the formula (V-2) is preferably a compound represented by the formula (V-2-1).

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

Further, the compound represented by the formula (V-2-1) is preferably a compound represented by the formula (23.1) to the formula (23.4), and the compound represented by the formula (23.1) or/and the formula (23.2) is Preferably.

Further, the compound represented by the formula (V-2) is preferably a compound represented by the formula (V-2-2).

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

Further, the compound represented by the formula (V-2-2) is preferably a compound represented by the formula (24.1) to the formula (24.4), and the compound represented by the formula (24.1) or / and the formula (24.2) is Preferably.

Further, the compound represented by the formula (V) is preferably a compound represented by the formula (V-3).

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound which can be combined is not particularly limited, but may be combined in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention is three or more types.

The compound represented by the formula (V-3) is preferably 2% by mass or more, more preferably 4% by mass or more, and even more preferably 7% by mass or more, based on the total amount of the liquid crystal composition of the present invention. It is particularly preferable to contain 8 mass% or more. Further, the ratio which can be most contained is preferably 16% by mass or less, more preferably 13% by mass or less, and still more preferably 11% by mass or less.

Further, the compound represented by the 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 one or two or more kinds of compounds represented by the formula (VI).

(wherein R ⁶¹ and R ⁶² are each independently represented by 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 type of the compound which can be combined is not particularly limited, but one of these compounds can be contained in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type is preferably, and it is more preferably one type to four types, and one type to more than one type is particularly preferable. Further, the ratio which can be most contained is preferably 35 mass% or less, more preferably 25% by mass or less, and still more preferably 15 mass% or less.

As the compound represented by the formula (VI), specifically, the compounds listed below can be preferably used.

The liquid crystal composition of the present invention may further contain one or more kinds of the compounds represented by the formula (VII).

(wherein R ⁷¹ and R ⁷² are each independently represented by 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 type of the compound that can be combined is not particularly limited, but one of these compounds can be contained in response to the properties required for low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type is preferably, and it is more preferably one type to four types, and one type to more than one type is particularly preferable. Further, the ratio which can be most contained is preferably 35 mass% or less, more preferably 25% by mass or less, and still more preferably 15 mass% or less.

The compound represented by the formula (VII) is preferably preferably used, for example. The compounds listed below.

The liquid crystal composition of the present invention preferably contains a compound represented by the formula (M).

(wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently pass through -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 are each independently represented as a group selected from the group consisting of: ( d) 1,4- cyclohexylene (this group present in one of the -CH ₂ - or of two or more adjacent -CH ₂ - may be substituted with -O- or -S-); and (e 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= may be substituted by -N=), the above-mentioned base (d), base (e Each independently represents a substitution by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 are each independently represented as a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^M1 is in the plural, they may be the same Can be different, PM is 2, 3 or 4 and C ^M2 is a complex number, they may be the same or different, X ^M1 and X ^M3 are each independently represented as a hydrogen atom, a chlorine atom or a fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, Fluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; but excluding compounds of formula (i) represents).

The type of the compound which can be combined is not particularly limited, but may be used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types. Further, another embodiment of the present invention has four types. Further, another embodiment of the present invention has five types. Further, another embodiment of the present invention has six types. Further, another embodiment of the present invention is seven or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (M) is necessary to cope with the solubility at low temperature, the transfer temperature, and the electrical letter. The properties sought for the properties of the properties such as the properties of the properties such as the properties of the coating, the refractive index, the processability, the instillation, the afterimage, and the dielectric anisotropy are suitably adjusted.

The lower limit of the preferred content is, for example, 1% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, for example, another embodiment of the present invention is 10%. For example, in still other embodiments of the present invention, it is 20%. For example, in still other embodiments of the present invention, it is 30%. For example, in still other embodiments of the present invention, it is 40%. For example, in still other embodiments of the present invention, it is 45%. For example, in still other embodiments of the present invention, it is 50%. For example, in still other embodiments of the present invention, it is 55%. For example, in still other embodiments of the present invention, it is 60%. For example, in still other embodiments of the present invention, it is 65%. For example, in still other embodiments of the present invention, it is 70%. For example, in still other embodiments of the present invention, it is 75%. For example, in still other embodiments of the present invention, it is 80%.

Further, the upper limit of the preferable content is, for example, 95% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 85%. In still other embodiments of the invention, it is 75%. In still other embodiments of the invention, it is 65%. In still other embodiments of the invention, it is 55%. In still other embodiments of the invention, it is 45%. In still other embodiments of the invention, it is 35%. In still other embodiments of the invention, it is 25%.

When the viscosity of the liquid crystal composition of the present invention is kept at a low value and the reaction rate is fast, it is necessary to have the above-mentioned lower limit value. It is preferable to set a low value and a low value. In addition, when the Tni of the liquid crystal composition of the present invention is maintained in a liquid crystal composition having a high value and excellent temperature stability, it is preferable to set the lower limit value to a low value and to set the upper limit value to a low value. Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

The ring structure in which R ^{M1 is} bonded to a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a carbon atom The number of 4 to 5 alkenyl groups is preferred, and the bonded ring structures are cyclohexane, meme, and In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear carbon atom having 2 to 5 carbon atoms Alkenyl is preferred.

The ring structure in which R ^{M1 is} bonded to a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a carbon atom The number of 4 to 5 alkenyl groups is preferred, and the bonded ring structures are cyclohexane, meme, and In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear carbon atom having 2 to 5 carbon atoms Alkenyl is preferred.

When the compound represented by the formula (M) is required to chemically stabilize the liquid crystal composition, it is preferred that the compound does not have a chlorine atom in the molecule. Further, the compound containing a chlorine atom in the liquid crystal composition is preferably 5% or less, more preferably 3% or less, more preferably 1% or less, and most preferably 0.5% or less, and substantially no content is preferable. It does not substantially mean that it is not intended to be a compound of a compound formed by an impurity at the time of production of a compound, and a compound containing only a chlorine atom is mixed into a liquid crystal composition.

The compound represented by the formula (M) is preferably a compound selected from the group consisting of compounds represented by the formula (VIII), for example.

(wherein 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; and X ⁸¹ to X ⁸⁵ are each independently represented as a hydrogen atom or A fluorine atom, Y ⁸ represents a fluorine atom or -OCF ₃ ).

The type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention is three or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (VIII) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the drip mark, and the afterimage. The properties sought for dielectric anisotropy and the like are suitably adjusted.

The lower limit of the preferred content is, for example, 2% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, for example, it is 4% as another embodiment of the present invention. For example, in still other embodiments of the present invention, it is 5%. For example, in still other embodiments of the present invention, it is 6%. For example, in still another embodiment of the present invention, it is 7%. For example, in still another embodiment of the present invention, it is 8%. For example, in still another embodiment of the present invention, it is 9%. E.g, In still other embodiments of the invention, it is 10%. For example, in still another embodiment of the present invention, it is 11%. For example, in still other embodiments of the present invention, it is 12%. For example, in still another embodiment of the present invention, it is 14%. For example, in still other embodiments of the present invention, it is 15%. For example, in still another embodiment of the present invention, it is 21%. For example, in still other embodiments of the present invention, it is 23%.

Further, the upper limit of the preferable content is, for example, 40% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 30%. In still other embodiments of the invention, it is 25%. In still other embodiments of the invention, it is 21%. In still other embodiments of the invention, it is 16%. In still other embodiments of the invention, it is 12%. In still other embodiments of the invention, it is 8%. In still other embodiments of the invention, it is 5%.

In the case where the viscosity of the liquid crystal composition of the present invention is kept low and the reaction rate is fast, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. In addition, when the Tni of the liquid crystal composition of the present invention is maintained in a liquid crystal composition having a high value and excellent temperature stability, it is preferable to set the lower limit value to a low value and to set the upper limit value to a low value. Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

Further, the compound represented by the formula (VIII) is preferably a compound represented by the formula (VIII-1).

(In the formula, 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 type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or another embodiment of the present invention is two or more types.

Further, the compound represented by the formula (VIII-1), specifically, the compound represented by the formula (26.1) to the formula (26.4) is preferable, and the compound represented by the formula (26.1) or the formula (26.2) is Preferably, the compound represented by the formula (26.2) is more preferably.

The content of the compound represented by the formula (26.2), considering the solubility at low temperature The transfer temperature, the electrical reliability, the complex refractive index, and the like are preferably 2% by mass or more, more preferably 4% by mass or more, and particularly preferably 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. In addition, the maximum ratio is preferably 40% by mass or less, more preferably 35% by mass or less, more preferably 30% by mass or less, and 25% by mass or less is considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. good.

Further, the compound represented by the formula (VIII) is preferably a compound represented by the formula (VIII-2).

(In the formula, 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 type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Alternatively, still another embodiment of the present invention is three or more types.

The content of the compound represented by the formula (VIII-2) is preferably 2.5% by mass or more, more preferably 8% by mass or more, in view of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The mass % is more preferable, and 12 mass% or more is more preferable. Further, the ratio which can be most contained is preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less.

Further, the compound represented by the formula (VIII-2) is preferably a compound represented by the formula (27.1) to the formula (27.4), and a compound represented by the formula (27.2) is preferred.

Further, the compound represented by the formula (M) is preferably a compound selected from the group of compounds represented by the formula (IX), for example.

(wherein 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; and X ⁹¹ and X ⁹² are each independently represented as a hydrogen atom or A fluorine atom, Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ , and U ⁹ represents a single bond, -COO- or -CF ₂ O-).

The type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of compound used, for example, as this One embodiment of the invention is of one type. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types. Further, another embodiment of the present invention has four types. Further, another embodiment of the present invention has five types. Further, another embodiment of the present invention is six or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (IX) is dependent on the solubility at low temperature, the transfer temperature, the electrical reliability, the complex refractive index, the process suitability, the drip mark, and the afterimage. The properties sought for dielectric anisotropy and the like are suitably adjusted.

The lower limit of the preferred content is, for example, 3% as an embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, for example, another embodiment of the present invention is 5%. For example, in still another embodiment of the present invention, it is 8%. For example, in still other embodiments of the present invention, it is 10%. For example, in still other embodiments of the present invention, it is 12%. For example, in still other embodiments of the present invention, it is 15%. For example, in still another embodiment of the present invention, it is 17%. For example, in still another embodiment of the present invention, it is 20%. For example, in still other embodiments of the present invention, it is 24%. For example, in still other embodiments of the present invention, it is 28%. For example, in still other embodiments of the present invention, it is 30%. For example, in still other embodiments of the present invention, it is 34%. For example, in still other embodiments of the present invention, it is 39%. For example, in still other embodiments of the present invention, it is 40%. For example, in still other embodiments of the present invention, it is 42%. For example, in still other embodiments of the present invention, it is 45%.

Further, with respect to the upper limit of the preferred content, the liquid relative to the present invention The total amount of the crystal composition is, for example, 70% as an embodiment of the present invention. Further, another embodiment of the present invention is 60%. In still other embodiments of the invention, it is 55%. In still other embodiments of the invention, it is 50%. In still other embodiments of the invention, it is 45%. In still other embodiments of the invention, it is 40%. In still other embodiments of the invention, it is 35%. In still other embodiments of the invention, it is 30%. In still other embodiments of the invention, it is 25%. In still other embodiments of the invention, it is 20%. In still other embodiments of the invention, it is 15%. In still other embodiments of the invention, it is 10%.

In the case where the viscosity of the liquid crystal composition of the present invention is kept low and the reaction rate is fast, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the Tni of the liquid crystal composition of the present invention is kept at a high value and a liquid crystal composition in which image sticking is hard to occur is necessary, it is preferable to set the lower limit value to a low value and to set the upper limit value to a low value. Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

Further, the compound represented by the formula (IX) is preferably a compound represented by the formula (IX-1).

(wherein 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, and Y ⁹ represents Fluorine atom or -OCF ₃ ).

The type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention has three types. Further, another embodiment of the present invention is four or more types.

Further, the compound represented by the formula (IX-1) is preferably a compound represented by the formula (IX-1-1).

(wherein 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 type of the compound which can be combined is not particularly limited, but it is used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or other embodiments of the present invention are of two types. Further, another embodiment of the present invention is three or more types.

The content of the compound represented by the formula (IX-1-1) has a preferred upper limit and a lower limit depending on the solubility in the low temperature, the transfer temperature, the electrical reliability, the complex refractive index, and the like. The lower limit of the content is preferably, for example, 1% of the embodiment, 2% of the other embodiment, or 4% of the other embodiment with respect to the total amount of the liquid crystal composition of the present invention. Further, in other embodiments, it is 10%, and in still other embodiments, it is 14%, and in still other embodiments, it is 16%, and in still other embodiments, it is 21%.

Further, the upper limit of the content is preferably, for example, 40% for one embodiment, 35% for other embodiments, 30% for other embodiments, and 25% for other embodiments, and still other embodiments. It is 10%, and other embodiments are 7%, and still other embodiments are 5%.

Further, the compound represented by the formula (IX-1-1) is preferably a compound represented by the formula (28.1) to the formula (28.5), and the compound represented by the formula (28.3) or/and the formula (28.5) is Preferably.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.3) is preferably 1% by mass or more, more preferably 3% by mass or more, and more preferably 5 parts by mass based on the total amount of the liquid crystal composition of the present invention. More than % is better, 8 The mass% or more is more preferably 10% by mass or more, more preferably 14% by mass or more, and 16% by mass or more is particularly preferable. Further, the maximum ratio is preferably 30% by mass or less, more preferably 25% by mass or less, more preferably 22% by mass or less, and more preferably 20% by mass or less, in view of low-temperature solubility, transfer temperature, electrical reliability, and the like. Very good.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.5) is preferably 3% by mass or more, and more preferably 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. Further, the maximum ratio is preferably 25% by mass or less, more preferably 20% by mass or less, and more preferably 15% by mass or less, and more preferably 13% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. It is especially good.

Further, the compound represented by the formula (IX-1) is preferably a compound represented by the formula (IX-1-2).

(wherein 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 type of the compound which can be combined is not limited, but it is preferable to combine one to three types in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, and it is more preferable to combine one to four types.

The content of the compound represented by the formula (IX-1-2) is preferably 1% by mass or more, more preferably 5% by mass or more, and more preferably 8% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, 10% by mass or more is more preferable, 14% by mass or more is more preferable, and 16% by mass or more is particularly preferable. In addition, the maximum ratio is considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 30% by mass or less is preferable, 25% by mass or less is more preferable, 22% by mass or less is more preferable, and less than 20% by mass is particularly preferable.

Further, the compound represented by the formula (IX-1-2) is preferably a compound represented by the formula (29.1) to the formula (29.4), and the compound represented by the formula (29.2) or / and the formula (29.4) is Preferably.

Further, the compound represented by the formula (IX) is preferably a compound represented by the formula (IX-2).

(wherein 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; and X ⁹¹ and X ⁹² are each independently represented as a hydrogen atom or A fluorine atom, Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ ).

The type of the compound which can be combined is not limited, but it is used in an appropriate combination in each embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type, and the other embodiments are two types, and other types are The configuration is three types, and the other embodiments are four types, and the other embodiments are five types, and the other embodiments are six or more types.

Further, the compound represented by the formula (IX-2) is preferably a compound represented by the formula (IX-2-1).

(wherein 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 type of the compound that can be combined is not limited, but it is preferable to combine one to three types in consideration of solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, and the like.

The content of the compound represented by the formula (IX-2-1) has a preferable upper limit and lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. value. The lower limit of the content, for example, one embodiment of the present invention is 1% with respect to the total amount of the liquid crystal composition of the present invention. The other embodiments are 2%, the other embodiments are 4%, and the other embodiments are 10%, and the other embodiments are 14%, and the other embodiments are 16%, and the other embodiments are 21 %. Further, the upper limit of the content is, for example, 40% in the embodiment of the present invention, 35% in the other embodiment, 30% in the other embodiment, and 25% in the other embodiment, and further implemented. The form is 22%, and the other embodiments are 20%, and the other embodiments are 10%, and the other embodiments are 7%, and the other embodiments are 5%.

Further, the compound represented by the formula (IX-2-1) is preferably a compound represented by the formula (30.1) to the formula (30.4), and a compound represented by the formula (30.1) to the formula (30.2) is preferred. .

Further, the compound represented by the formula (IX-2) is preferably a compound represented by the formula (IX-2-2).

(wherein 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 type of the compound which can be combined is not limited, but it is preferable to combine one to three types in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, and it is more preferable to combine one to four types.

The content of the compound represented by the formula (IX-2-2) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The lower limit of the content, for example, one embodiment of the present invention is 1% with respect to the total amount of the liquid crystal composition of the present invention, 2% of the other embodiments, and 4% of the other embodiments, and again The other embodiments are 10%, and the other embodiments are 14%, and the other embodiments are 16%, and the other embodiments are 21%. Further, the upper limit of the content is, for example, 40% of the embodiment of the present invention, and 35% of the other embodiment. The configuration is 30%, and the other embodiments are 25%, and the other embodiments are 22%, and the other embodiments are 15%, and the other embodiments are 12%, and the other embodiments are 8%. And other embodiments are 4%.

Further, the compound represented by the formula (IX-2-2) is preferably a compound represented by the formula (31.1) to the formula (31.4), and a compound represented by the formula (31.1) to the formula (31.4) is preferred. .

Further, the compound represented by the formula (IX-2) is preferably a compound represented by the formula (IX-2-3).

(wherein 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 type of the compound which can be combined is not limited, but it is preferable to combine one type or two types in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index and the like.

The content of the compound represented by the formula (IX-2-3) is preferably 1% by mass or more, more preferably 3% by mass or more, and more preferably 6% by mass or more based on the total amount of the liquid crystal composition of the present invention. Preferably, 8 mass% or more is more preferable, and 15 mass% or more is particularly good. Further, it is preferable that the maximum ratio is limited to 30% by mass or less in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. It is more preferably less than 20% by mass, more preferably 15% by mass or less, and even more preferably less than 10% by mass.

Further, the compound represented by the formula (IX-2-3) is preferably a compound represented by the formula (32.1) to the formula (32.4), and the compound represented by the formula (32.2) and/or the formula (32.4) is Preferably.

Further, the compound represented by the formula (IX-2) is preferably a compound represented by the formula (IX-2-4).

(wherein 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 formula (IX-2-4) is preferably 1% by mass or more, more preferably 3% by mass or more, and more preferably 6% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, 8 mass% or more is particularly good. Further, the maximum ratio is preferably 30% by mass or less, more preferably 20% by mass or less, more preferably 15% by mass or less, and even less than 10% by mass, in view of low-temperature solubility, transfer temperature, electrical reliability, and the like. Very good.

Further, the compound represented by the formula (IX-2-4) is preferably a compound represented by the formula (33.1) to the formula (33.5), and the compound represented by the formula (33.1) and/or the formula (33.3) is Preferably.

Further, the compound represented by the formula (IX-2) is preferably a compound represented by the formula (IX-2-5).

(wherein 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 type of the compound which can be combined is not limited, but it is used in an appropriate combination in each embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type, and the other embodiments are two types, and other embodiments are three types, and still other embodiments are four or more types.

The content of the compound represented by the formula (IX-2-5) has an upper limit and a lower limit in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. Lower limit of content, for example With respect to the total amount of the liquid crystal composition of the present invention, one embodiment of the present invention is 4%, the other embodiment is 8%, and the other embodiments are 12%, and still another embodiment is 21%. Furthermore, the other embodiments are 30%, and the other embodiments are 31%, and the other embodiments are 34%. Further, the upper limit of the content is, for example, 45% in the embodiment of the present invention, 40% in the other embodiment, 35% in the other embodiment, and 32% in the other embodiment, and further implemented. The form is 22%, and the other embodiments are 13%, and the other embodiments are 9%, and the other embodiments are 8%, and the other embodiments are 5%.

In the case where the viscosity of the liquid crystal composition of the present invention is kept low and the reaction rate is fast, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the Tni of the liquid crystal composition of the present invention is kept at a high value and a liquid crystal composition in which image sticking is hard to occur is necessary, it is preferable to set the lower limit value to a low value and to set the upper limit value to a low value. Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

Further, the compound represented by the formula (IX-2-5) is preferably a compound represented by the formula (34.1) to the formula (34.5), and the formula (34.1), the formula (34.2), the formula (34.3) and/or Or a compound represented by the formula (34.5) is preferred.

Further, the compound represented by the formula (IX) is preferably a compound represented by the formula (IX-3).

(wherein 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; and X ⁹¹ and X ⁹² are each independently represented as a hydrogen atom or A fluorine atom, Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ ).

Further, the compound represented by the formula (IX-3) is preferably a compound represented by the formula (IX-3-1).

(wherein 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 type of the compound which can be combined is not limited, but it is preferable to combine one type or two types in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index and the like.

The content of the compound represented by the formula (IX-3-1) is preferably 3% by mass or more, more preferably 7% by mass or more, and more preferably 13% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, 15% by mass or more is particularly good. Further, the maximum ratio is preferably 30% by mass or less, more preferably 20% by mass or less, more preferably 18% or less, and more preferably 10% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. good.

Further, the compound represented by the formula (IX-3-1) is preferably a compound represented by the formula (35.1) to the formula (35.4), and the compound represented by the formula (35.1) and/or the formula (35.2) is Preferably.

Further, the compound represented by the formula (M) is preferably a compound represented by the formula (X).

(wherein, X ¹⁰¹ to X ¹⁰⁴ are each independently represented by a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , Q ¹⁰ represents a single bond or -CF ₂ O-, and R ¹⁰ represents a carbon atom An alkyl group of 1 to 5, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ¹⁰¹ and A ¹⁰² are each independently represented by 1,4-cyclohexylene group, 1,4-extension Phenyl, or However, the hydrogen atom on the 1,4-phenylene group may be substituted by a fluorine atom; except for the compound represented by the formula (i).

The compound which can be combined is not particularly limited, but is appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention has two types. Still other embodiments are three types. In addition, other embodiments are of four types. Further, other embodiments are five or more types.

The content of the compound represented by the formula (X) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. The lower limit of the content, for example, one embodiment of the present invention is 2% with respect to the total amount of the liquid crystal composition of the present invention, and the other embodiment is 3%, and other embodiments are 6%, and other embodiments are 8%, and other embodiments are 9%, and other embodiments are 11%, and other embodiments are 12%. Still other embodiments are 18%. Still another embodiment is 19%. Still another embodiment is 23%. Still another embodiment is 25%. Further, the upper limit of the content is, for example, 45% of the embodiment of the present invention, 35% of the other embodiments, 30% of the other embodiments, and 25% of the other embodiments, and the other embodiments. The embodiment is 20%, and the other embodiments are 13%, and the other embodiments are 9%, and the other embodiments are 6%, and the other embodiments are 3%.

In the case where the viscosity of the liquid crystal composition of the present invention is kept low and the reaction rate is fast, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where a liquid crystal composition which is difficult to generate an afterimage is necessary, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in order to keep the driving voltage at a low value and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1).

(wherein, X ¹⁰¹ to X ¹⁰³ are each independently represented by a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms. An oxy group; except for the compound represented by the formula (i)).

The compound which can be combined is not particularly limited, but is appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention has two types. Still other embodiments are three types. In addition, other embodiments are of four types. Further, other embodiments are five or more types.

The content of the compound represented by the formula (X-1) has an upper limit and a lower limit in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. The lower limit of the content, for example, one embodiment of the present invention is 2%, the other embodiment is 3%, and the other embodiment is 5%, and further, with respect to the total amount of the liquid crystal composition of the present invention. The other embodiments are 6%, and the other embodiments are 7%, and the other embodiments are 8%, and the other embodiments are 9%. Still another embodiment is 13%. Still other embodiments are 18%. Still another embodiment is 23%.

Further, the upper limit of the content is, for example, 40% of the embodiment of the present invention, 30% of the other embodiments, 25% of the other embodiments, and 20% of the other embodiments, and further implementation. The form is 15%, and the other embodiments are 10%, and the other embodiments are 6%, and the other embodiments are 4%, and the other embodiments are 2%.

In addition, the compound represented by the formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1-1).

(wherein 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 which can be combined is not particularly limited, but is appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention has two types. Still other embodiments are three types. Further, other embodiments are four or more types.

The content of the compound represented by the formula (X-1-1) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index. The lower limit of the content, for example, one embodiment of the present invention is 3% with respect to the total amount of the liquid crystal composition of the present invention, 4% of the other embodiments, and 6% of the other embodiments, and again The other embodiments are 9%, and the other embodiments are 12%, and the other embodiments are 15%, and the other embodiments are 18%. Still another embodiment is 21%.

Further, the upper limit of the content is, for example, 30% of the embodiment of the present invention, 20% of the other embodiments, 13% of the other embodiments, and 10% of the other embodiments, and further implementation. The morphology is 7%, and the other embodiments are 3%.

Further, the compound represented by the formula (X-1-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (36.1) to the formula (36.4) is preferable, and The compound represented by the formula (36.1) and/or the formula (36.2) is preferred.

In addition, the compound represented by the formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1-3).

(wherein 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 which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (X-1-3) is preferably 1% by mass or more, more preferably 2% by mass or more, and 6% by mass or more based on the total amount of the liquid crystal composition of the present invention. Better yet. Further, the maximum ratio is preferably 20% by mass or less, more preferably 16% by mass or less, and 12% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. Good, 10% or less is especially good.

Further, the compound represented by the formula (X-1-3) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (38.1) to the formula (38.4) is preferable, and The compound represented by the formula (38.2) is preferred.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2).

(wherein, X ¹⁰² to X ¹⁰³ are each independently represented by a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, and 2 to 2 carbon atoms; An alkenyl group of 5 or an alkoxy group having 1 to 4 carbon atoms; except for the compound represented by the formula (i).

The compound that can be combined is not particularly limited, but it is considered to dissolve at a low temperature. It is preferable to combine one type or two types or more in terms of properties, transfer temperature, electrical reliability, and complex refractive index.

In addition, the compound represented by the formula (X-2) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2-1).

(wherein 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 which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, and one to three types or more are combined. Better.

The content of the compound represented by the formula (X-2-1) is preferably 3% by mass or more, more preferably 4% by mass or more, and 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. Better yet. Further, the maximum ratio is preferably 20% by mass or less, more preferably 16% by mass or less, more preferably 12% by mass or less, and 10% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. good.

Further, the compound represented by the formula (X-2-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (39.1) to the formula (39.4) is preferable, and the formula thereof is contained therein. The compound represented by (39.2) is preferred.

In addition, the compound represented by the formula (X-2) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2-2).

(wherein 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 which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (X-2-2) is preferably 3% by mass or more, more preferably 6% by mass or more, and 9% by mass or more based on the total amount of the liquid crystal composition of the present invention. Better yet. Further, the maximum ratio is preferably 20% by mass or less, more preferably 16% by mass or less, more preferably 12% by mass or less, and 10% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. good.

Further, the general formula (X-2-2) used in the liquid crystal composition of the present invention The compound represented by the formula (40.1) to the formula (40.4) is preferred, and the compound represented by the formula (40.2) is preferred.

Further, the compound represented by the formula (X) is preferably a compound represented by the formula (X-3).

(wherein, X ¹⁰² to X ¹⁰³ are each independently represented by a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms. An oxy group; except for the compound represented by the formula (i)).

The compound which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

Further, the compound represented by the formula (X) is preferably a compound represented by the formula (X-4).

(wherein X ¹⁰² represents a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, and one to three types or more are combined. Better.

In addition, the compound represented by the formula (X-4) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-1).

(wherein 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 which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, and one to three types or more are combined. Better.

The content of the compound represented by the formula (X-4-1) is preferably 2% by mass or more, more preferably 4% by mass or more, and 6% by mass or more based on the total amount of the liquid crystal composition of the present invention. Better yet. Further, the maximum ratio is limited to 20% by mass or less, preferably 17% by mass or less, more preferably 15% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. Good, 13% by mass or less is especially good.

Further, the compound represented by the formula (X-4-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (42.1) to the formula (42.4) is preferable, and The compound represented by the formula (42.3) is preferred.

Further, the compound represented by the formula (X) is preferably a compound represented by the formula (X-5).

(wherein X ¹⁰² represents a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound which can be combined is not particularly limited, but one to two are considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, and the like. Combinations of the above types are preferred, and combinations of one to three or more are more preferable.

In addition, the compound represented by the formula (X-5) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-5-1).

(wherein 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 which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, and one to three types or more are combined. Better.

Further, the compound represented by the formula (X-5-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (43.1) to the formula (43.4) is preferable, and The compound represented by the formula (43.2) is preferred.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-6).

(wherein 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 which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and complex refractive index.

The content of the compound represented by the formula (X-6) has an upper limit and a lower limit in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. The lower limit of the content, for example, the embodiment of the present invention is 4% with respect to the total amount of the liquid crystal composition of the present invention, the other embodiment is 5%, and the other embodiment is 6%, and again The other embodiments are 8%, and the other embodiments are 9%, and the other embodiments are 11%, and the other embodiments are 14%. Still other embodiments are 18%.

Further, the upper limit of the content is, for example, 30% of the embodiment of the present invention, 20% of the other embodiments, 13% of the other embodiments, and 10% of the other embodiments, and further implementation. The morphology is 7%, and the other embodiments are 3%.

Further, the compound represented by the formula (X-6) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (44.1) to the formula (44.4) is preferable, and the formula ( 44.1) and / or expressed in formula (44.2) Compounds are preferred.

Further, the compound represented by the formula (L) or the compound represented by the formula (X) is preferably a compound selected from the group represented by the formula (XI).

(wherein, X ¹¹¹ to X ¹¹⁷ are each independently represented by a fluorine atom or a hydrogen atom, and at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, and 2 to 2 carbon atoms; An alkenyl group of 5 or an alkoxy group having 1 to 4 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF ₃ ).

The compound which can be combined is not particularly limited, but one type to three or more types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, complex refractive index and the like.

The content of the compound represented by the formula (XI) is considered in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. Each embodiment has an upper limit and a lower limit. The lower limit of the content of the liquid crystal composition of the present invention is, for example, 2% of the embodiment of the present invention, 4% of the other embodiments, and 5% of the other embodiments. The other embodiments are 7%, and the other embodiments are 9%, and the other embodiments are 10%, and the other embodiments are 12%. Still another embodiment is 13%. Still another embodiment is 15%. Still other embodiments are 18%.

Further, the upper limit of the content is, for example, 30% of the embodiment of the present invention, 25% of the other embodiment, 20% of the other embodiment, and 15% of the other embodiment, and further implementation. The morphology is 10%, and the other embodiment is 5%.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small cell gap, it is suitable to form a plurality of compounds represented by the general formula (XI). In the case of using a liquid crystal display element having a small driving voltage, it is suitable to provide a plurality of compounds represented by the general formula (XI). Moreover, in the case of a liquid crystal display element used in a low-temperature environment, it is suitable to make the content of the compound represented by the general formula (XI) small. In the case of a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable that the content of the compound represented by the general formula (XI) is small.

Further, the compound represented by the formula (XI) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XI-1).

(wherein 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 compound which can be combined is not particularly limited, but is appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type, and the other embodiments are two types, and in still other embodiments, three types or more are combined.

The content of the compound represented by the formula (XI-1) is preferably 1% by mass or more, more preferably 2% by mass or more, and more preferably 3% by mass or more, based on the total amount of the liquid crystal composition of the present invention. 4% by mass or more is more preferable, 6% by mass or more is more preferable, and 9% by mass or more is particularly preferable. Further, the maximum ratio is preferably 20% by mass or less, more preferably 15% by mass or less, more preferably 12% by mass or less, and 8% by mass or less is considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. good.

Further, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (45.1) to the formula (45.4) is preferable, and the formula (45.2) is contained therein. The compound represented by the formula (45.4) is preferred, and the compound represented by the formula (45.2) and the formula (45.4) is more preferably contained.

Further, the compound represented by the formula (L) or the compound represented by the formula (X) is preferably a compound selected from the group represented by the formula (XII).

(wherein, X ¹²¹ to X ¹²⁶ are each independently represented by 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 an alkane having 1 to 4 carbon atoms. Oxy group, Y ¹² represents a fluorine atom or -OCF ₃ ).

The compound which can be combined is not particularly limited, but one type to three or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, and one to four types or more are combined. good.

Further, the compound represented by the formula (XII) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XII-1).

(wherein 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 compound which can be combined is not particularly limited, but one to two are considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, and the like. Combinations of the above types are preferred, and combinations of one to three or more are more preferable.

The content of the compound represented by the formula (XII-1) is preferably 1% by mass or more, more preferably 2% by mass or more, and more preferably 3% by mass or more, based on the total amount of the liquid crystal composition of the present invention. 4% by mass or more is particularly good. Further, the maximum ratio is preferably 15% by mass or less, more preferably 10% by mass or less, more preferably 8% by mass or less, and 6% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. good.

Further, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (46.1) to the formula (46.4) is preferable, and the compound thereof is contained. The compound represented by the formula (46.2) to the formula (46.4) is preferred.

Further, the compound represented by the formula (XII) is preferably a compound represented by the formula (XII-2).

(wherein 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 compound which can be combined is not particularly limited, but one type to two or more types are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, complex refractive index, and the like, and one to three types or more are combined. Better.

The content of the compound represented by the formula (XII-2) is preferably 1% by mass or more, more preferably 3% by mass or more, and even more preferably 4% by mass or more, based on the total amount of the liquid crystal composition of the present invention. 6% by mass or more is more preferable, and 9% by mass or more is particularly preferable. Further, the maximum ratio is preferably 20% by mass or less, more preferably 17% by mass or less, more preferably 15% by mass or less, and 13% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. good.

Further, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (47.1) to the formula (47.4) is preferable, and the compound thereof is contained. The compound represented by the formula (47.2) to the formula (47.4) is preferred.

Further, the compound represented by the formula (M) is preferably a compound selected from the group of compounds represented by the formula (XIII).

(wherein, X ¹³¹ to X ¹³⁵ are each independently represented by 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 an alkane having 1 to 4 carbon atoms. Oxy group, Y ¹³ represents a fluorine atom or -OCF ₃ ; except for the compound represented by the formula (i)).

The type of the compound which can be combined is not particularly limited, but one or two kinds of the compounds containing these compounds are preferable, and one type to three types are more preferable, and one type to four types are more preferable.

The content of the compound represented by the formula (XIII) has an upper limit and a lower limit in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. The lower limit of the content, for example, one embodiment of the present invention is 2% with respect to the total amount of the liquid crystal composition of the present invention, 4% of the other embodiments, and 5% of the other embodiments, and again The other embodiments are 7%, and the other embodiments are 9%, and the other embodiments are 11%, and the other embodiments are 13%. Still another embodiment is 14%. And other implementations The form is 16%. Still another embodiment is 20%.

Further, the upper limit of the content is, for example, 30% of the embodiment of the present invention, 25% of the other embodiments, 20% of the other embodiments, and 15% of the other embodiments, and the other embodiments. The embodiment is 10%, and the other embodiment is 5%.

The liquid crystal composition of the present invention is used for a liquid crystal display device having a small cell gap, and the content of the compound represented by the general formula (XIII) is preferably a plurality. In the case of using a liquid crystal display element having a small driving voltage, it is suitable that the content of the compound represented by the general formula (XIII) is large. Further, in the case of a liquid crystal display element used in a low-temperature environment, the content of the compound represented by the general formula (XIII) is preferably small. In the case of a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable that the content of the compound represented by the formula (XIII) is small.

Further, the compound represented by the formula (XIII) is preferably a compound represented by the formula (XIII-1).

(wherein 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 formula (XIII-1) is preferably 1% by mass or more, more preferably 3% by mass or more, and more preferably 5% by mass or more, based on the total amount of the liquid crystal composition of the present invention. It is particularly preferable to contain 10% by mass or more. Moreover, in terms of the ratio that can be most contained, 25% by mass The lower portion is preferably 20% by mass or less, more preferably 15% by mass or less.

Further, the compound represented by the formula (XIII-1) is preferably a compound represented by the formula (48.1) to the formula (48.4), and a compound represented by the formula (48.2) is preferred.

Further, the compound represented by the formula (M) is preferably a compound selected from the group of compounds represented by the formula (XIV).

(wherein 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; and X ¹⁴¹ to X ¹⁴⁴ are each independently represented as 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-, and m ¹⁴ represents 0 or 1).

The type of the compound which can be combined is not limited, but it is suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention has two types. Alternatively, still another embodiment of the present invention is three types. Further, still another embodiment of the present invention has four types. Alternatively, still another embodiment of the present invention is of five types. Alternatively, still another embodiment of the present invention is six or more types.

The content of the compound represented by the formula (XIV) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. The lower limit of the content, for example, one embodiment of the present invention is 3% with respect to the total amount of the liquid crystal composition of the present invention, the other embodiment is 7%, and the other embodiment is 8%, and again The other embodiments are 11%, and the other embodiments are 12%, and the other embodiments are 16%, and the other embodiments are 18%. Still another embodiment is 19%. Still another embodiment is 22%. Still another embodiment is 25%.

Further, the upper limit of the content is, for example, 40% of the embodiment of the present invention, 35% of the other embodiments, 30% of the other embodiments, and 25% of the other embodiments, and the other embodiments. The embodiment is 20%, and the other embodiment is 15%.

In the case where the liquid crystal composition of the present invention is used for a liquid crystal display element having a small driving voltage, it is suitable to form a plurality of compounds represented by the general formula (XIV). Further, in the case of a liquid crystal composition of a liquid crystal display element having a fast reaction speed, the content of the compound represented by the general formula (XIV) is The few are suitable.

Further, the compound represented by the formula (XIV) is preferably a compound represented by the formula (XIV-1).

(wherein 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, and Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ ).

The type of the compound that can be combined is not limited, but it is preferable to combine one to three types in consideration of solubility at low temperature, transfer temperature, electrical reliability, complex refractive index, and the like.

Further, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-1).

(wherein 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 formula (XIV-1) is preferably 2% by mass or more, more preferably 4% by mass or more, and even more preferably 7% by mass or more, based on the total amount of the liquid crystal composition of the present invention. 10% by mass or more is more preferable, and 18% by mass or more is particularly preferable. Further, the maximum ratio is preferably 30% by mass or less, more preferably 27% by mass or less, more preferably 24% by mass or less, and more preferably 21% by mass or less, in view of low-temperature solubility, transfer temperature, electrical reliability, and the like. Very good.

Further, the compound represented by the formula (XIV-1-1), specifically, the compound represented by the formula (51.1) to the formula (51.4) is preferred, and contains a compound. The compound represented by (51.1) is more preferred.

Further, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-2).

(wherein 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 formula (XIV-1-2) is preferably 1% by mass or more, more preferably 3% by mass or more, and 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, 7 mass% or more is particularly good. Further, the maximum ratio is preferably 15% by mass or less, more preferably 13% by mass or less, more preferably 11% by mass or less, and more preferably 9% by mass or less, in view of low-temperature solubility, transfer temperature, electrical reliability, and the like. Very good.

Further, the compound represented by the formula (XIV-1-2), specifically, the compound represented by the formula (52.1) to the formula (52.4) is preferable, and the compound represented by the formula (52.4) is contained. good.

Further, the compound represented by the formula (XIV) is preferably a compound represented by the formula (XIV-2).

(wherein 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; and X ¹⁴¹ to X ¹⁴⁴ are each independently represented as a fluorine atom or A hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ ).

The type of the compound which can be combined is not limited, but it is suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention has two types. Alternatively, still another embodiment of the present invention is three types. Further, still another embodiment of the present invention has four types. Alternatively, still another embodiment of the present invention is five or more types.

The content of the compound represented by the formula (XIV-2) is considered in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. In each embodiment, there are upper limit values and lower limit values. The lower limit of the content, for example, one embodiment of the present invention is 3% with respect to the total amount of the liquid crystal composition of the present invention, the other embodiment is 7%, and the other embodiment is 8%, and again The other embodiments are 10%, and the other embodiments are 11%, and the other embodiments are 12%, and the other embodiments are 18%. Still another embodiment is 19%. Still another embodiment is 21%. Still another embodiment is 22%.

Further, the upper limit of the content is, for example, 40% of the embodiment of the present invention, 35% for the other embodiments, 25% for the other embodiments, and 20% for the other embodiments, and the like. The embodiment is 15%, and the other embodiment is 10%.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the formula (XIV-2) is preferably a plurality. Further, in the case of using a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable that the content of the compound represented by the formula (XIV-2) is small.

Further, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-1).

(wherein 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 formula (XIV-2-1) is preferably 1% by mass or more, more preferably 3% by mass or more, and 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, 7 mass% or more is particularly good. Moreover, considering the solubility at low temperature, the transfer temperature, electrical reliability, and the like The maximum ratio is preferably 15% by mass or less, more preferably 13% by mass or less, more preferably 11% by mass or less, and particularly preferably less than 9% by mass.

Further, the compound represented by the formula (XIV-2-1), specifically, the compound represented by the formula (53.1) to the formula (53.4) is preferable, and the compound represented by the formula (53.4) is contained. good.

Further, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-2).

(wherein 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 formula (XIV-2-2) is preferably 3% by mass or more, more preferably 6% by mass or more, and 9% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, 12% by mass or more is particularly good. Further, the maximum ratio is preferably 20% by mass or less, more preferably 17% by mass or less, more preferably 15% by mass or less, and 14% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. good.

Further, the compound represented by the formula (XIV-2-2), specifically, the compound represented by the formula (54.1) to the formula (54.4) is preferable, and the formula (54.2) and/or the formula (54.4) is contained therein. The compound represented is preferred.

Further, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-3).

(wherein 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 formula (XIV-2-3) is preferably 5% by mass or more, more preferably 9% by mass or more, and more preferably 12% by mass or more based on the total amount of the liquid crystal composition of the present invention. Very good. Further, the maximum ratio is preferably 30% by mass or less, more preferably 27% by mass or less, and more preferably 24% by mass or less, and more preferably 20% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. It is especially good.

Further, the compound represented by the formula (XIV-2-3), specifically, the compound represented by the formula (55.1) to the formula (55.4) is preferable, and the formula (55.2) and/or the formula (55.4) is contained therein. The compound represented is preferred.

Further, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-4).

(wherein 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 type of the compound which can be combined is not limited, but it is suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention has two types. Alternatively, still another embodiment of the present invention is three or more types.

The content of the compound represented by the formula (XIV-2-4) has an upper limit and a lower limit in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and complex refractive index. Lower limit of content, examples For example, according to the total amount of the liquid crystal composition of the present invention, one embodiment of the present invention is 2%, the other embodiment is 5%, and the other embodiment is 8%, and still another embodiment is 9. %, and other implementations are 10%, and other implementations are 18%, and yet other implementations are 21%. Still another embodiment is 22%. Still another embodiment is 24%.

Further, the upper limit of the content is, for example, 35% of the embodiment of the present invention, 30% of the other embodiments, 25% of the other embodiments, and 20% of the other embodiments, and the other embodiments. The embodiment is 15%, and the other embodiment is 10%.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small driving voltage, it is suitable to use a compound having a content represented by the general formula (XIV-2-4). Further, in the case of using a liquid crystal composition of a liquid crystal display element having a high reaction rate, the content of the compound represented by the general formula (XIV-2-4) is preferably small.

Further, the compound represented by the formula (XIV-2-4), specifically, the compound represented by the formula (56.1) to the formula (56.4) is preferable, and the formula (56.1) and the formula (56.2) are contained therein. The compound represented by the formula (56.4) is preferred.

Further, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-5).

(wherein 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 formula (XIV-2-5) is preferably 5% by mass or more, more preferably 10% by mass or more, and more preferably 13% by mass or more based on the total amount of the liquid crystal composition of the present invention. Very good. Further, the maximum ratio is preferably 25% by mass or less, more preferably 22% by mass or less, and more preferably 18% by mass or less, and more preferably 15% by mass or less, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. It is especially good.

Further, the compound represented by the formula (XIV-2-5), specifically, the compound represented by the formula (57.1) to the formula (57.4). Among them, a compound represented by the formula (57.1) is preferred.

Further, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-6).

(wherein R ¹⁴ is 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 formula (XIV-2-6) is preferably 5% by mass or more, more preferably 10% by mass or more, and more preferably 15% by mass or more based on the total amount of the liquid crystal composition of the present invention. Very good. Further, the maximum ratio is preferably 25% by mass or less, more preferably 22% by mass or less, more preferably 20% by mass or less, and 17% by mass or less is considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. Very good.

Further, the compound represented by the formula (XIV-2-6), specifically, the compound represented by the formula (58.1) to the formula (58.4) is preferable, and the compound represented by the formula (58.2) is contained. good.

The compound used in the invention of the present invention does not have a peracid (-CO-OO-) structure in the molecule. Further, in the case where the reliability and long-term stability of the liquid crystal composition are emphasized, it is preferred not to use a compound having a carbonyl group. Further, attention is paid to the stability of the UV irradiation, and a compound which does not use a chlorine atom is desired. Compounds having a ring structure of only 6 members in the molecule are also preferred.

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 lateral electric field type PSA mode or a lateral electric field type PSVA mode. The polymerizable compound which can be used is, for example, a photopolymerizable monomer which is polymerized by an energy ray such as light, and the structure is, for example, a biphenyl derivative or a terphenyl group. The six-membered ring such as a derivative is a polymerizable compound of a liquid crystal skeleton which is connected in plurality. More specifically, the difunctional monomer represented by the formula (XX) is preferably: (wherein, X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group, and Sp ²⁰¹ and Sp ²⁰² are each independently represented by 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, an oxygen atom is bonded to an aromatic ring), and Z ²⁰¹ represents -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH- , -COO-CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -CH ₂ CH ₂ -COO-, -CH ₂ CH ₂ -OCO-, -COO-CH ₂ -, -OCO-CH ₂ - , -CH ₂ -COO-, -CH ₂ -OCO-, -CY ¹ =CY ² - (wherein, Y ¹ and Y ² are each independently represented as a fluorine atom or a hydrogen atom), -C≡C- or a single bond M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and all of the 1,4-phenylene groups in the formula may be substituted by a fluorine atom.

Any one of a diacrylate derivative in which one of X ²⁰¹ and X ²⁰² represents a hydrogen atom, or a dimethacrylate derivative having a methyl group is preferred, and one of them represents a hydrogen atom and the other A compound representing a methyl group is also preferred. The rate of polymerization of these compounds is the fastest in diacrylate derivatives, the slowest in dimethacrylate derivatives, and the middle of asymmetric compounds, depending on the application. Dimethacrylate derivatives are particularly preferred for PSA display elements.

Sp ²⁰¹ and Sp ²⁰² are each independently represented by a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -, but at least one of the PSA display elements is preferably a single bond. A compound which represents a single bond or one which is a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - is preferred. In this case, an alkyl group of 1 to 4 is preferred, and an s of 1 to 4 is preferred.

Z ²⁰¹ is -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ - or a single bond Preferably, -COO-, -OCO- or a single bond is preferred, and a single bond is particularly preferred.

M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which any hydrogen atom may be substituted by a fluorine atom, but a 1,4-phenylene group or a single bond is preferred. . C represents a ring structure other than a single bond, and Z ²⁰¹ is preferably a linking group other than a single bond, and M ²⁰¹ is a single bond, and a Z ²⁰¹ single bond is preferable.

From the viewpoints of the above, in the ring structure between the general formula (XX), Sp ²⁰¹ and Sp ²⁰² , specifically, the structure described below is preferable.

In the general formula (XX), M ²⁰¹ represents a single bond, and the ring structure is formed by two rings, and the following formula (XXa-1) to formula (XXa-5) are preferred, and the formula (XXa-) is represented. 1) It is more preferable to the formula (XXa-3), and the expression (XXa-1) is particularly preferable.

(wherein both ends are combined with Sp ²⁰¹ or Sp ²⁰² ).

The polymerizable compound containing these skeletons is most suitable for the PSA type liquid crystal display element after polymerization, and the display unevenness is suppressed or does not occur at all because a good alignment state can be obtained.

From the above, it is understood that the polymerizable monomer is particularly preferred from the formula (XX-1) to the formula (XX-4), and the formula (XX-2) is preferred.

(wherein, Sp ²⁰ represents an alkylene group having 2 to 5 carbon atoms).

In the case where a monomer is added to the liquid crystal composition of the present invention, the polymerization proceeds even if the polymerization initiator is not present, but a polymerization initiator may be contained in order to promote the polymerization. As the polymerization initiator, a benzoin ether, a benzophenone, an acetophenone, or a benzil ketal can be exemplified. , acylphosphine oxides (acylphosphine oxide) and the like.

The liquid crystal composition in the present invention may further contain a compound represented by the formula (Q).

(wherein R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or more of the CH ₂ groups in the alkyl group may be such that the oxygen atoms are not directly adjacent to each other. Substituted by -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, M ^Q represents trans-1,4 - a cycloalkylene group, a 1,4-phenylene group or a single bond).

R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or more of the CH ₂ groups in the alkyl group may be subjected to -O- in a manner in which the oxygen atoms are not directly adjacent to each other. , -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, but a linear alkyl group having 1 to 10 carbon atoms, A linear alkoxy group, a CH ₂ group substituted with -OCO- or -COO-, a linear alkyl group, a branched alkyl group, a branched alkoxy group, and a CH ₂ group are substituted with - a branched alkyl group of OCO- or -COO- is preferred, a linear alkyl group having 1 to 20 carbon atoms, a CH ₂ group having ₁ group substituted with a linear alkyl group of -OCO- or -COO-, More preferably, the branched alkyl group, the branched alkoxy group, and the CH ₂ group of one is substituted with a branched alkyl group of -OCO- or -COO-. M ^Q represents a trans-1,4-cyclocyclohexyl group, a 1,4-phenylene group or a single bond, but a trans-1,4-cycloalkylene group or a 1,4-phenylene group is preferred.

The compound represented by the formula (Q), more specifically, the compound represented by the following formula (Q-a) to formula (Q-d) is preferred.

In the formula, R ^Q1 represents a linear alkyl group or a branched alkyl group having 1 to 10 carbon atoms, and R ^Q2 represents a linear alkyl group or a branched alkyl group having 1 to 20 carbon atoms is preferred. R ^Q3 represents a linear alkyl group having 1 to 8 carbon atoms, a branched alkyl group, a linear alkoxy group or a branched alkoxy group, and L ^Q represents a linear chain having 1 to 8 carbon atoms. An alkyl group or a branched alkyl group is preferred. Among the compounds represented by the formula (Qa) to the formula (Qd), the compound represented by the formula (Qc) and the formula (Qd) is more preferable.

The liquid crystal composition of the present invention contains one or two kinds of compounds represented by the formula (Q), preferably one to five, more preferably 0.001 to 1% by mass, preferably 0.001. It is more preferably 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 a polymerizable compound contained in these polymers which is polymerized by ultraviolet irradiation to impart liquid crystal alignment ability, and controls the amount of transmitted light by the birefringence of the liquid crystal composition. Used by liquid crystal display elements. As for the liquid crystal display element, it can be used for AM-LCD (Active Matrix Liquid Crystal Display Element), TN (Nematic Liquid Crystal Display Element), STN-LCD (Super Torsional Nematic Liquid Crystal Display Element), OCB-LCD, FFS Mode and IPS-LCD (Plane Conversion Liquid Crystal Display Element), but especially for AM-LCD, can be used for a transmissive or reflective liquid crystal display element.

For the two substrates of the liquid crystal cell used for the liquid crystal display element, glass or a soft and transparent material such as plastic may be used, or one of them may be an opaque material such as tantalum. The 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 produced, for example, by a pigment dispersion method, a printing method, an electrodeposition method, a dyeing method, or the like. A method of 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 onto the transparent substrate, and a pattern forming process is performed, and heating or light irradiation is performed. And make it hard. This step can be performed as a color element for a color filter by performing three colors of red, green, and blue. Further, a pixel electrode provided with an active element such as a TFT, a thin film diode, or a metal insulator metal specific resistance element may be provided on the substrate.

The substrate is oriented such that the transparent electrode layer is inside. At this time, the interval between the substrates can also be adjusted by the spacer. At this time, it is preferable to adjust the thickness of the obtained light control layer to 1 to 100 μm. 1.5 to 10 μm is more preferable, and in the case of using a polarizing plate, the refractive index anisotropy Δn of the liquid crystal and the thickness of the liquid crystal cell are adjusted in such a manner that the contrast becomes the largest. The winner is better. Further, in the case of two polarizing plates, the polarizing axes of the respective polarizing plates can be adjusted to adjust the viewing angle or contrast to be good. Further, a phase difference film for increasing the viewing angle can also be used. The spacer may, for example, be a columnar spacer including glass particles, plastic particles, alumina particles, a photoresist material, or the like. Thereafter, a sealant such as an epoxy thermosetting composition is screen-printed on the substrate in a shape in which a liquid crystal injection port is provided, and the substrates are bonded to each other to heat and cure the sealant.

A method of sandwiching a liquid crystal composition containing a polymerizable compound between two substrates can be a vacuum injection method or an ODF method, and a vacuum injection method does not cause a drip mark, but a trace of the injection remains. The subject matter of the present invention can be preferably used for a display element manufactured by the ODF method. In the liquid crystal display device manufacturing program of the ODF method, an epoxy-based photothermal heat-sealing sealant is used in a substrate of either a backplane or a frontplane, and is closed by a dispenser. The circuit is depicted in a soil-like manner in which a liquid crystal display element is produced by dropping a predetermined amount of the liquid crystal composition under degassing by joining the front plate and the back plate. Since the liquid crystal composition of the present invention is stably carried out by dropping the liquid crystal composition in the ODF step, it can be preferably used.

In the method of polymerizing a polymerizable compound, in order to obtain a good alignment property of a liquid crystal, an appropriate polymerization rate is desired, and polymerization is carried out by irradiating an active energy ray such as ultraviolet rays or electron beams in a single or in combination or sequentially. The method is preferred. In the case of using ultraviolet rays, a polarized light source or a non-polarized light source may be used. Further, the liquid crystal composition containing the polymerizable compound is polymerized in a state of being sandwiched between two substrates. In the shape, at least the substrate on the side of the irradiation surface must be provided with appropriate transparency with respect to the active energy ray. Further, when a specific portion is polymerized by using a mask after light irradiation, the alignment state of the unpolymerized portion is changed by changing conditions such as an electric field, a magnetic field, or a temperature, and further, polymerization can be performed by using an irradiation active energy ray. s method. In particular, in the case of ultraviolet light exposure, it is preferred to perform ultraviolet exposure while applying an alternating electric field to the liquid crystal composition containing the polymerizable compound. The applied alternating electric field is preferably an alternating current having a frequency of 10 Hz to 10 kHz, and a frequency of 60 Hz to 10 kHz is more preferable, and the voltage is selected in accordance with a desired pre-tilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display element of the transverse electric field type MVA mode, it is preferable to control the pretilt angle to 80 to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably in a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. The polymerizer is preferred at a temperature close to room temperature, i.e., typically at a temperature of from 15 to 35 °C. As the lamp for causing ultraviolet rays, a metal halide lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like can be used. Further, in terms of the wavelength of the ultraviolet ray to be irradiated, it is preferred to irradiate ultraviolet rays in the wavelength range of the absorption wavelength range of the non-liquid crystal composition, and it is preferable to use ultraviolet rays when necessary. The intensity of the ultraviolet ray to be irradiated is preferably 0.1 mW/cm ² to 100 W/cm ^{2 , more} preferably 2 mW/cm ² to 50 W/cm ² . The amount of energy of the ultraviolet ray to be irradiated can be appropriately adjusted, but it is preferably 10 mJ/cm ² to 500 J/cm ^{2 , more} preferably 100 mJ/cm ² to 200 J/cm ² . When the ultraviolet rays are irradiated, the intensity can be changed. The time for irradiating the ultraviolet rays is appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, but 10 seconds to 3600 seconds is preferable, and 10 seconds to 600 seconds is more preferable.

The liquid crystal display element using the liquid crystal composition of the present invention is useful for suppressing both high-speed reaction and display failure, and particularly for a liquid crystal display element for active matrix driving, and is applicable to VA mode, PSVA mode, PSA mode, A liquid crystal display element for IPS mode, FFS mode or ECB mode.

Hereinafter, preferred embodiments of the liquid crystal display device of the present invention will be described in detail with reference to the drawings.

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 a liquid crystal sealed in a sealing region surrounded by the sealing material.

Specifically, a specific embodiment of a liquid crystal display device is provided. The TFT substrate 102 and the pixel electrode 103 are provided on the first substrate 100, and a passivation film 104 and a first alignment film 105 are provided thereon. The second substrate 200 is provided with a black matrix 202, a color filter 203, a planarization film (overcoat layer) 201, a transparent electrode 204, and a second alignment film 205 is disposed thereon. a front plate facing the backing plate, a sealing member 301 disposed between the substrates, and a liquid crystal layer 303 sealed in a sealing region surrounded by the sealing member, and provided on a substrate surface adjacent to the sealing member 301 Protrusions (columnar spacers) 302, 304.

The first substrate or the second substrate may be substantially transparent, and the material is not particularly limited, and glass, ceramics, plastic, or the like can be used. For the plastic substrate, cellulose derivatives such as cellulose, triethyl fluorenyl cellulose, and diethyl hydrazine cellulose, polycycloolefin derivatives, polyethylene terephthalate, and poly naphthalene dicarboxylic acid can be used. Polyester, polypropylene, etc. Polyolefin, polyethylene, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyamidamine, polystyrene, polyacrylic acid As the ester, polymethyl methacrylate, polyether oxime, polyarylate compound, inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, or the like can be used.

When a plastic substrate is used, a barrier film is preferably used. The function of the barrier film has the reliability of lowering the moisture permeability of the plastic substrate and improving 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, inorganic materials such as cerium oxide are used by evaporation or sputtering, and chemical vapor deposition. A film formed by a (CVD method).

In the present invention, the same material or the same material may be used as the first substrate or the second substrate, and is not particularly limited. When a glass substrate is used, a liquid crystal display element excellent in heat resistance and dimensional stability can be produced. Further, in the case of a plastic substrate, it is preferably a method of manufacturing a roll-to-roll process and is suitable for weight reduction or flexibility. Moreover, for the purpose of imparting flatness and heat resistance, good results can be obtained when a plastic substrate and a glass substrate are combined.

Further, in the embodiment described later, a substrate which is a material of the first substrate 100 or the second substrate 200 is used.

The TFT substrate 102 and the pixel electrode 103 are provided on the first substrate 100 on the back sheet. These are manufactured in the usual array steps. A passivation film 104 and a first alignment film 105 are provided thereon to obtain a back sheet.

The passivation film 104 (also referred to as an inorganic protective film) is a film for protecting the TFT layer, and is usually nitrided by a chemical vapor phase epitaxy (CVD) technique or the like. Film (SiNx), oxide film (SiOx), and the like.

Further, the first alignment film 105 is a film having a function of aligning liquid crystals, and a polymer material such as a general polyimine is often used. As the coating liquid, an alignment agent solution containing a polymer material and a solvent can be used. The alignment film is coated in the sealing region due to the possibility of suppressing the adhesion to the sealing material. The coating method is a printing method such as a flexographic printing method or a droplet discharge method such as inkjet. The coated alignment agent solution is cured by temporary drying and evaporation of the solvent, followed by baking. Thereafter, the alignment process is performed in order to make the alignment function.

The alignment treatment is carried out by a usual rubbing method. The polymer film formed as described above is rubbed in one direction by using a flat-grinding cloth made of fibers such as enamel, and liquid crystal alignment ability is generated.

Also, there are also those who use the optical alignment method. The photo-alignment method is a method in which a polarizing light is irradiated onto an alignment film containing an organic material having photoreceptivity to cause an alignment ability to occur, and substrate damage or dust generation by a rubbing method does not occur. As an example of the organic material in the photo-alignment method, there is a material containing a dichroic dye. In the case of a dichroic dye, a molecular alignment-induced or heterogeneous reaction (for example, azophenyl) or a dimerization reaction (for example, cinnamyl) having a Weigert effect due to photochromism can be used. A photocrosslinking reaction (for example, a benzophenone group) or a photodecomposition reaction (for example, a polyamidino group) produces a photoreactive group which is a source of liquid crystal alignment ability (hereinafter, abbreviated as photoalignment) base). The applied alignment agent solution is obtained by temporarily drying the solvent and evaporating the light having an arbitrary deflection (polarized light) to obtain an alignment film having an alignment ability in an arbitrary direction.

The front substrate is provided with a black matrix 202, a color filter 203, a planarizing film 201, a transparent electrode 204, and a second alignment film 205 on the second substrate 200.

The black matrix 202 is produced, for example, by a pigment dispersion method. Specifically, on the second substrate 200 provided with the barrier film 201, a colored resin liquid in which a black coloring agent for black matrix formation is uniformly dispersed is applied to form a colored layer. Next, the colored layer is baked to be hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed through the mask pattern, development is performed to pattern the colored layer. Thereafter, the photoresist layer is peeled off, and the colored layer is baked to complete the black matrix 202.

Alternatively, a photoresist type pigment dispersion liquid can also be used. In this case, a photoresist type pigment dispersion liquid is applied, and after prebaking, it is exposed by a mask pattern, and then developed to form a 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 formed by a pigment dispersion method, an electrodeposition method, a printing method, a dyeing method, or the like. In the case of the pigment dispersion method, a color resin liquid in which a pigment (for example, a red pigment) is uniformly dispersed is applied onto the second substrate 200, and after baking curing, the upper surface is coated with a photoresist and pre-baked. After the photoresist is exposed through the mask pattern, development is performed to form a pattern. Thereafter, the photoresist layer is peeled off and baked again to complete the (red) color filter 203 (203a). The order of coloring is not particularly limited. Similarly, a green color filter 203 (203b) and a blue color filter 203 (203c) are formed.

The transparent electrode 204 is provided on the color filter 203 (the outer layer (201) is provided on the color filter 203 for the purpose of flattening the surface if necessary). Transparent electrode 204 is preferred for light transmittance, electrical resistance The smaller one is better. The transparent electrode 204 is formed of an oxide film of ITO or the like by a sputtering method.

Further, for the purpose of protecting the transparent electrode 204, a passivation film may be provided on the transparent electrode 204.

The second alignment film 205 is the same as the first alignment film 105 described above.

Although the above description of the back sheet and the front sheet used in the present invention is described above, the present invention is not limited to the specific aspect, and the change of the aspect of the liquid crystal display element is free.

The shape of the columnar spacer is not particularly limited, and the horizontal cross section may be formed into various shapes such as a circular shape, a square shape, or the like, but the horizontal cross section is rounded in consideration of a misaligned margin in the step. Or positive polygons are particularly good. Further, the shape of the projection is preferably a truncated cone or a truncated cone.

The material of the columnar spacer is not particularly limited as long as it is a sealing material or an organic solvent or a liquid crystal which is not dissolved in the sealing material. However, from the viewpoint of processing and weight reduction, synthetic resin (hardening) Resin) is preferred. On the other hand, the protrusions may be provided on the surface adjacent to the sealing material on the first substrate by a gravure printing method or a solution dropping method. For this reason, it is preferred to use a photocurable resin suitable for the method of gravure printing or the solution dropping method.

The case where the columnar spacer is obtained by the gravure printing method will be described as an example. Fig. 2 is a view showing an exposure processing procedure for forming a columnar spacer formed on a black matrix of a mask pattern.

A resin liquid for forming a columnar spacer (excluding a colorant) is applied to the transparent electrode 204 of the front plate. Next, the resin layer 402 is baked and hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed through the mask pattern 401, development is performed to pattern the resin layer. Thereafter, the photoresist layer was peeled off, and the resin layer was baked to complete the columnar spacer (302, 0304 in Fig. 1).

The position at which the column spacers are formed determines the desired position depending on the mask pattern. Therefore, both the inside of the sealing region of the liquid crystal display element and the outside of the sealing region (the sealing material coating portion) can be simultaneously formed. Further, the column spacer is preferably formed on the black matrix so as not to lower the quality of the sealing region. The column spacers thus produced by gravure printing are sometimes referred to as column spacers or photo spacers.

The material of the spacer is a mixture of a negative water-soluble resin such as a PVA-strolbazo photosensitive resin or a polyfunctional acrylic monomer, an acrylic copolymer, a triazole-based initiator, or the like. Alternatively, there is a method of using a coloring resin in which a coloring agent is dispersed in a polyimide resin. The present invention is not particularly limited, and a spacer can be obtained by a known material depending on the phase of the liquid crystal or the sealing material to be used.

In this manner, after the columnar spacer is provided on the surface of the front plate which is the sealing region, the sealing material is applied to the surface adjacent to the sealing material of the backing plate (301 in Fig. 1).

The material of the sealing material is not particularly limited, and a curable resin composition for adding a polymerization initiator to an epoxy-based or acrylic-based photocurable, thermosetting, or photo-curable resin can be used. In addition, in order to control moisture permeability, elastic modulus, viscosity, etc., inorganic or organic substances may be added. A filler. The shape of these fillers is not particularly limited and may be spherical, fibrous, amorphous or the like. Further, in order to control the cell gap well, a spherical or fibrous spacer having a monodisperse diameter may be mixed, and in order to further strengthen the adhesion to the substrate, a fibrous substance which is easily entangled with the protrusion on the substrate may be mixed. The diameter of the fibrous material used at this time is about 1/5 to 1/10 of the cell gap, and it is desirable that the length of the fibrous material is shorter than the seal coating width.

In addition, the material of the fibrous material is not particularly limited as long as the predetermined shape can be obtained, and synthetic fibers such as cellulose, polyamide or polyester, or inorganic materials such as glass or carbon can be suitably selected.

In the method of applying the sealing material, there is a printing method or a dispensing method, but a dispensing method in which the amount of the sealing material used is small is preferable. The sealing material application position is usually formed on a black matrix in such a manner that it does not adversely affect the sealing area. In order to form the liquid crystal dropping region of the next step (in a manner in which the liquid crystal does not leak), the sealing material coating shape is formed into a closed loop shape.

The liquid crystal is dropped into the closed circuit shape (sealing region) of the front plate to which the sealing material is applied. A dispenser is usually used. The amount of liquid crystal to be dropped is basically the same as the volume of the product of the height of the columnar spacer and the sealed coated area in order to match the volume of the liquid crystal cell. However, in order to optimize liquid crystal leakage or display characteristics in the step of bonding the liquid crystal cells, the amount of liquid crystal dropped may be appropriately adjusted or the liquid crystal dropping position may be dispersed.

Next, the front plate of the liquid crystal is applied by applying the sealing material, and bonding to the back sheet. Specifically, the front plate and the back plate are adsorbed on a stage having a mechanism for adsorbing the substrate such as an electrostatic chuck, and the first alignment film of the front plate and the first alignment film of the back plate are paired. to, It is disposed at a position (distance) where the sealing material is not adjacent to the other substrate. In this state, the system is depressurized. After the decompression is completed, the positions of the two substrates are adjusted while adjusting the bonding position between the front plate and the back plate (calibration operation). At the end of the adjustment of the bonding position, the substrate is brought close to the position where the sealing material on the front plate abuts the backing plate. In this state, the system is filled with an inert gas, and the pressure is gradually released while returning to normal pressure. At this time, the front plate and the back plate are bonded together by the atmospheric pressure, and the cell gap is formed at the height position of the column spacer. In this state, the sealing material is irradiated with ultraviolet rays and the sealing material is cured to form a liquid crystal cell. Thereafter, the heating step is added as appropriate and the sealing material is allowed to harden. In order to enhance the adhesion of the sealing material or to increase the reliability of the electrical characteristics, a heating step is often added.

[Examples]

The following examples are given to further illustrate the invention, but the invention is not limited to the examples. Moreover, "%" in the composition of the following examples and comparative examples means "% by mass".

In the examples, the measured characteristics are as follows.

Tni: nematic phase-isotropic liquid phase transfer temperature (°C)

Δn: refractive index anisotropy in 295K (alias: complex refractive index)

△ ε: dielectric anisotropy in 295K

η: viscosity in 295K (mPa‧s)

Rotational viscosity (mPa‧s) in γ1: 295K

VHR: Voltage holding ratio (%) in 313K under the condition of frequency of 60 Hz and application of voltage of 5V

Afterimage: The afterimage evaluation of the liquid crystal display element is specified in the display area After 1440 hours of the fixed pattern display, the degree of afterimage of the fixed pattern when the full-screen uniform display was performed was visually observed and evaluated by the following four-stage evaluation.

◎ no afterimage

○ Only a few residual images are acceptable

△ There is an afterimage and it is unacceptable

× has afterimage and is very poor

Volatilization/manufacturing device contamination: The evaluation of the volatility of the liquid crystal material was carried out by visually observing the operation state of the vacuum agitating defoaming mixer with a stroboscope while observing the foaming of the liquid crystal material. Specifically, 0.8 kg of a liquid crystal composition was placed in a special container of a vacuum stirring defoaming mixer having a capacity of 2.0 L, and under a degassing of 4 kPa, at a revolution speed of 15 S ^-1 and a rotation speed of 7.5 S ^-1 , the vacuum was operated. The defoaming mixer was stirred and evaluated in the following four stages via the time until the start of foaming.

◎ To foam for 3 minutes or more. The possibility of contaminating the device via volatilization is low.

○ The foaming time is 1 minute or more and less than 3 minutes. There are doubts about the slight contamination of the device through volatilization.

△ The foaming time is 30 seconds or more and less than 1 minute. Device contamination can occur via volatilization.

× To foaming within 30 seconds. There are doubts about volatilization and significant equipment contamination.

Process suitability: In the ODF process, using a fixed metering pump, add 40pL of liquid crystal per drop and perform 100000 times, followed by "0~200 times, 201~400 times, For the change of the liquid crystal amount of 200 times of each of 401 to 600 times, ‧ ‧ ‧ 99801 to 100,000 times, the process suitability was evaluated in the following four stages.

◎ Very small change (safely manufacturing liquid crystal display elements)

○ Only a few changes are acceptable

△ There is a change and it is unacceptable (the yield is deteriorated due to spotting)

× There is variation and very poor (liquid crystal leakage or vacuum bubble generation)

Solubility at low temperature: After modulating the liquid crystal composition, 0.5 g of the liquid crystal composition was weighed in a 1 mL sample vial in a temperature-controlled test cell, followed by one cycle of "-20 ° C (for 1 hour) → temperature increase ( 0.2 ° C / min) → 0 ° C (for 1 hour) → temperature (0.2 ° C / min) → 20 ° C (for 1 hour) → cooling (-0.2 ° C / min) → 0 ° C (for 1 hour) → The temperature change of the temperature drop (-0.2 ° C /min) - -20 ° C" was observed, and the occurrence of the precipitate of the liquid crystal composition was visually observed, and the solubility evaluation at low temperature was carried out by the following four-stage evaluation.

◎ No precipitate was observed for 600 hours or more.

○ No precipitate was observed for more than 300 hours.

△ The precipitate was observed within 150 hours.

× precipitate was observed within 75 hours.

(Example 1)

The composition shown below was prepared. The physical property values of the composition of Example 1 are shown in Table 1.

(Example 2)

The composition shown below was prepared. The physical property values of the composition of Example 2 are shown in Table 2.

The compositions of Examples 1 to 2 containing three or more kinds of the compounds represented by the above formula (i) exhibit properties as large as the same, and are excellent in storage stability.

(Comparative Example 1)

The composition shown below which contains the compound represented by the said General formula (i) is prepared. The physical property values of the composition of Comparative Example 1 are shown in Table 3.

The composition of Comparative Example 1 containing only one kind of the compound represented by the above formula (i) and the compound containing three or more kinds of the compound represented by the above formula (i) Compared with the compositions of Examples 1 to 2, Δn and Δε were decreased.

(Comparative Example 2)

The composition shown in the following two types of the compound represented by the above formula (i) is prepared. The physical property values of the composition of Comparative Example 2 are shown in Table 4.

Comparative Example 2 containing only two kinds of compounds represented by the above formula (i) The composition exhibited the same physical property values as those of the compositions of Examples 1 and 2 containing three or more kinds of the compounds represented by the above formula (i), but it was confirmed that the composition was precipitated after 4 weeks.

(Comparative Example 3)

The following composition shown in the two types of compounds represented by the above formula (i) was prepared. The physical property values of the composition of Comparative Example 3 are shown in Table 5.

The composition of Comparative Example 3 containing only two kinds of compounds represented by the above formula (i) is compared with the compositions of Examples 1 to 2 containing three or more compounds represented by the above formula (i). The Tni was lowered and it was confirmed that it was precipitated after 4 weeks.

(Example 3)

The composition shown below was prepared. The physical property values of the composition of Example 3 are shown in Table 6.

(Example 4)

The composition shown below was prepared. The physical property values of the compositions of Example 4 are shown in Table 7.

(Example 5)

The composition shown below was prepared. The physical property values of the compositions of Example 5 are shown in Table 8.

(Example 6)

The composition shown below was prepared. The physical property values of the compositions of Example 6 are shown in Table 9.

(Example 7)

The composition shown below was prepared. The physical property values of the composition of Example 7 are shown in Table 10.

(Example 8)

The composition shown below was prepared. The physical property values of the compositions of Example 8 are shown in Table 11.

(Example 9)

The composition shown below was prepared. The physical property values of the composition of Example 9 are shown in Table 12.

(Embodiment 10)

The composition shown below was prepared. The physical property values of the compositions of Example 10 are shown in Table 13.

(Example 11)

The composition shown below was prepared. The physical property values of the composition of Example 11 are shown in Table 14.

(Embodiment 12)

The composition shown below was prepared. The physical property values of the composition of Example 12 are shown in Table 15.

(Example 13)

The composition shown below was prepared. The physical property values of the composition of Example 13 are shown in Table 16.

(Example 14)

The composition shown below was prepared. The physical property values of the compositions of Example 14 are shown in Table 17.

(Example of liquid crystal display device)

Using the liquid crystal compositions described in Examples 1 to 3, an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 was produced. This liquid crystal display device has excellent display characteristics (refer to Table 18), and exhibits stable display characteristics over a long period of time.

[Industrial availability]

A composition which exhibits a liquid crystal composition value in which Δε is positive and which is stable to heat or light can be provided.

100‧‧‧1st substrate

102‧‧‧TFT layer

103‧‧‧ pixel electrodes

104‧‧‧passivation film

105‧‧‧1st alignment film

200‧‧‧2nd substrate

201‧‧‧Flating film (coating layer)

202‧‧‧Black matrix

203‧‧‧Color filters

203a‧‧‧Red Filter

203b‧‧‧Green Filter

203c‧‧‧Blue filter

204‧‧‧Transparent electrode

205‧‧‧2nd alignment film

301‧‧‧ sealing material

302‧‧‧protrusions (columnar spacers)

303‧‧‧Liquid layer

304‧‧‧protrusions (columnar spacers)

401‧‧‧mask pattern

402‧‧‧ resin layer

Fig. 1 is a cross-sectional view showing a liquid crystal display element of the present invention. A substrate having 100 to 105 is referred to as a "back plate", and a substrate having 200 to 205 is referred to as a "front plate".

Fig. 2 is a view showing an exposure processing procedure for forming a columnar spacer formed on a black matrix as a mask pattern.

Claims (8)

A liquid crystal composition containing at least one compound represented by the following formula (i) and containing at least one compound represented by the following formula (i ' -2) as the following formula (i) The compound represented by the following formula (I-1-1), a compound represented by the following formula (I-1-2), and the following formula (IV-1) The compound represented by the following formula (III), a compound represented by the following formula (X-4), a compound represented by the following formula (IX-1), and the following One or more compounds of the compound represented by the formula (XI-1) and the compound represented by the following formula (VIII-1), (wherein R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently pass through -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substituted, m ⁱ¹ represents 1 or 2, and A ⁱ¹ represents 1,4-cyclohexylene or a hydrogen atom which may be substituted by a fluorine atom or a chlorine atom. 4-phenylene, but when m ⁱ¹ is 1, A ⁱ¹ represents a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom, and m ⁱ¹ is 2 and A ⁱ¹ is a plural number, A ^I1 may be the same or different, and X ⁱ¹ represents a hydrogen atom, a fluorine atom or a chlorine atom), (wherein R ⁱ¹ represents the same meaning as R ⁱ¹ in the formula (i), and X ⁱ¹ represents a fluorine atom), (wherein R ^{12 is} independently represented by an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms), (wherein R ⁴³ and R ⁴⁴ are each independently represented by an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms), (R ³¹ and R ³² are each independently represented by 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), (wherein 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), (wherein 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, and Y ⁹ represents Fluorine atom or -OCF ₃ ), (wherein 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), (In the formula, 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 liquid crystal composition of the first aspect of the invention, which contains at least one of the compounds represented by the following formula (i-2) and at least one compound represented by the following formula (i-1). a compound represented by the formula (i), (In the formula ^(i1), R i1 and R ⁱ¹ represents the formula (i) in the same sense, and with the same meaning of X ⁱ¹ represents the formula (i) in the X ^i1; of formula (i-2) ^Wherein R ⁱ¹ represents the same meaning as R ⁱ¹ in the formula (i), and X ⁱ¹ represents a hydrogen atom or a chlorine atom). The liquid crystal composition of the second aspect of the invention, which contains at least two kinds of the compounds represented by the formula (i-2) as the compound represented by the formula (i). A liquid crystal composition according to claim 1 which contains a compound represented by the following formula (L), (wherein R ^L1 and R ^L2 are each independently represented by an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently pass through -CH=CH -, -C≡C-, -O-, -CO-, -COO- or -OCO-substituted, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently represented as selected from the following The group of the group consisting of: (a) 1,4-cyclohexylene (one of -CH ₂ - present in this group or two or more -CH ₂ - which may not be adjacent may be substituted by -O-) And (b) 1,4-phenylene (one of which is present in the group -CH= or two or more non-contiguous -CH= may be substituted by -N=), the above-mentioned group (a) The group (b) may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 are each independently represented as a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ - , -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C -, where OL is 2 or 3 and L ^L2 is plural, L ^L2 may be the same or different, OL is 2 or 3 and B ^L3 is plural; B ^L3 may be the same The compound represented by the formula (I-1-1) and the compound represented by the formula (I-1-2) are different. General formula (IV-1) except the compound represented by the general formula and (III) represented). The liquid crystal composition of claim 1, which contains a compound represented by the following formula (M), (wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - may independently pass through -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 are each independently represented as a group selected from the group consisting of: (d) 1,4- cyclohexylene (this group present in one of the -CH ₂ - or of two or more adjacent -CH ₂ - may be substituted with -O- or -S-); and ( e) 1,4-phenylene (one of which is present in this group -CH= or two or more non-contiguous -CH= may be substituted with -N=), the above-mentioned group (d), group ( e) each independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 are each independently represented as a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^M1 is a complex number, K ^M1 can be The same may be different, PM is 2, 3 or 4 and C ^M2 is a complex number, C ^M2 may be the same or different, and X ^M1 and X ^M3 are each independently represented as a hydrogen atom, a chlorine atom or Fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group , trifluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; but, the compound represented by the formula (i), the formula (X) -4) The compound represented by the formula, the compound represented by the formula (IX-1), the compound represented by the formula (XI-1), and the compound represented by the formula (VIII-1). A liquid crystal display element using the liquid crystal composition as in the first aspect of the patent application. An IPS element using a liquid crystal composition as in the first aspect of the patent application. An FFS element using the liquid crystal composition as in the first aspect of the patent application.