TW201435054A - Liquid crystal composition and liquid crystal display element using the same - Google Patents

Abstract

One of the objects of the present invention is to provide a liquid crystal composition which has a positive Δ ε , a wide liquid crystal range, excellent solubility at low temperatures, excellent ODF-process-compatibility, and a high specific resistance and voltage holding ratio, and is stable to heat and light. In order to achieve this object, the present invention provides a liquid crystal composition containing a compound represented by the following formula (i) and a compound represented by the following formula (ii).

Description

Liquid crystal composition and liquid crystal display element using same

The present invention relates to a nematic liquid crystal composition having a positive dielectric anisotropy (Δε) as a liquid crystal display material and a liquid crystal display element using the same.

Headsets and computers are used, and liquid crystal display elements have been used in various measuring machines, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertising displays, and the like. 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 external stimuli such as moisture, air, heat, light, etc., and is intended to display a liquid crystal phase at a temperature range as wide as possible centering on a room temperature. It is low viscosity and the driving voltage is low. Further, in order to make dielectric anisotropy (Δε) and/or refractive index anisotropy (Δn) and the like suitable for each display element, liquid crystal compositions are composed of several types to tens of types of compounds. Things.

A liquid crystal composition having a negative Δε is used in a vertical alignment (VA) type display, and Δε is used in a horizontal alignment type display such as a TN type, an STN type, or an IPS (in-plane switching type). Positive liquid crystal composition. Further, it has been reported that the liquid crystal composition having a positive Δ ε is vertically aligned when no voltage is applied, and the necessity of the liquid crystal composition having a positive Δ ε is further improved by the driving method displayed when a transverse electric field is applied. On the other hand, it is demanding low-voltage driving, high-speed reaction, and a wide operating temperature range for all driving methods. 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, in order to set the product Δn × d of Δn and the cell gap (d) to a predetermined value, it is necessary to adjust the Δn of the liquid crystal composition together with the cell gap to an appropriate range. Further, when a liquid crystal display element is applied to a television or the like, since high-speed reactivity is emphasized, a liquid crystal composition having a small rotational viscosity (γ ₁ ) is required.

In the composition of the liquid crystal composition which is aimed at high-speed reactivity, for example, it has been revealed that the compound represented by the formula (A-1) or the formula (A-2) in which the liquid crystal compound having a positive Δ ε is combined, and Δε are A liquid crystal composition used for (B) of a neutral liquid crystal compound. These liquid crystal compositions are characterized in that the liquid crystal compound having a positive liquid crystal compound of Δε has a -CF ₂ O- structure, or a liquid crystal compound having a negative Δ ε has an alkenyl group. These characteristics are widely known in the field of liquid crystal compositions (see Patent Documents 1 to 4).

On the other hand, the use of liquid crystal display elements has been expanded, and the methods of use and manufacturing methods have also seen great changes. In order to cope with such changes, it has become desirable to optimize characteristics other than the basic physical property values known conventionally. 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 the size thereof 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 a mainstream injection method from the conventional vacuum injection method to the ODF (One Drop Fill) method. However, the problem that the dripping trace of the liquid crystal composition dripping the substrate causes the display quality to deteriorate has already risen to the top.

Further, regarding the manufacturing steps 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 larger 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 unevenness or poor contrast may occur. In particular, a large number of small liquid crystal display elements for smart phones that have recently become popular, in order to make them most suitable The amount of liquid crystal injection is small, and it is difficult to control the deviation of the optimum distance within a certain range. Therefore, in order to keep the yield of the liquid crystal display element high, the liquid crystal composition is demanding, for example, a sudden change in the pressure in the dripping device generated when the liquid crystal is dropped, or a small influence on the punching, and it is possible to continue dripping stably over a long period of time.

As described above, regarding the liquid crystal composition used in the active matrix driving liquid crystal display element driven by the TFT element or the like, in consideration of the manufacturing method of the liquid crystal display element, the high-speed reaction performance demanded as the liquid crystal display element is being sought , development of a specific resistance value, a high voltage holding ratio, or an improvement in external stimuli such as light or heat.

Prior technical literature Patent literature

Patent Document 1 Japanese Patent Laid-Open Publication No. 2008-037918

Patent Document 2 Japanese Patent Laid-Open Publication No. 2008-038018

Patent Document 3 Japanese Patent Laid-Open Publication No. 2010-275390

Patent Document 4 Japanese Special Open 2011-052120

[Summary of the Invention]

The problem to be solved by the present invention is to provide a liquid crystal composition having a positive Δ ε, which has a liquid crystal phase in a wide temperature range, low viscosity, good solubility at low temperatures, high specific resistance or voltage retention, and heat or light. For a stable liquid crystal composition; in addition, by using this composition, yield It is preferable to provide a liquid crystal display element which exhibits excellent display quality which suppresses display failure due to image sticking or dropping marks, and a liquid crystal display element using the liquid crystal composition.

The present invention encompasses the following aspects.

(1) A liquid crystal composition comprising a compound represented by the following formula (i) and formula (ii).

(2) The composition according to the above-mentioned item (1), wherein the compound represented by the above formula (i) and 2% by mass or more are contained in an amount of 1% by mass or more and 30% by mass or less based on the total amount of the composition. A compound represented by the above formula (ii) in a mass% or less.

(3) The composition according to the above (1) or (2), which further contains at least one compound represented by the formula (L).

In the above formula, 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 at least two of -CH ₂ - which are not adjacent to each other may be independently -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 a group of constituent groups: (a) 1,4-cyclohexylene (one -CH ₂ - or at least two non-adjacent -CH ₂ - may be substituted with -O-) present in the group, and (b) 1,4-phenylene (one -CH= or non-contiguous at least two -CH= may be substituted for -N=), the above-mentioned group (a) and group (b) ) each independently 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-, When OL is 2 or 3 and L ^L2 has a plurality of cases, they may be the same or different, and OL is 2 or 3 and B ^L3 has a plurality of cases, and they may be the same or different, but the above formula ( Ii) Except for the compounds indicated.

(4) The composition according to any one of the items (1) to (3), further comprising at least one compound represented by the formula (M).

In the above formula, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two of -CH ₂ - which are not adjacent to each other may be independently -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 a -CH ₂ - or at least two contiguous -CH ₂ - may be substituted with -O- or -S-), and (e) 1,4-phenylene (one of -CH= or non-contiguous at least two -CH= may be substituted by -N=), and the above-mentioned base (d) and base (e) Independently substituted by a cyano group, a fluorine atom or a chlorine atom, 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 has a plurality of cases, they may be the same or When PM is 2, 3 or 4 and C ^M2 is plural, 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, and X ^M2 represents a hydrogen atom. , fluorine atom, chlorine atom, cyano group, trifluoromethyl Except, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl, the compound represented by the formula (i).

(5) A liquid crystal display device using the liquid crystal composition according to any one of the items (1) to (4) above.

(6) The liquid crystal display device according to (5) above, wherein the display mode is the IPS mode.

(7) The liquid crystal display device according to (5) above, wherein the display mode is the OCB mode.

(8) The liquid crystal display device according to (5) above, wherein the display mode is the ECB mode.

(9) The liquid crystal display device according to (5) above, wherein the display mode is the VA mode.

(10) The liquid crystal display device according to (5) above, wherein the display mode is the VA-IPS mode.

(11) The liquid crystal display device according to (5) above, wherein the display mode is the FFS mode.

(12) A liquid crystal display device using the liquid crystal display device according to any one of the items (5) to (11) above.

The composition having positive dielectric anisotropy of the present invention maintains low viscosity, high specific resistance, and high voltage retention while significantly improving the solubility in the lower temperature, and is displayed by the ODF method. It is possible to continue the dripping through the long-term stability in the component manufacturing step. Therefore, the composition of the present invention can produce a liquid crystal display element which exhibits excellent display quality due to display failure due to a manufacturing step with high yield, and uses an IPS (in-plane switching) type or A liquid crystal display element of an FFS (fringe field switching) type or the like can achieve a high-speed reaction.

100‧‧‧1st substrate

102‧‧‧TFT layer

103‧‧‧pixel electrode

104‧‧‧passivation film

105‧‧‧1st alignment film

200‧‧‧2nd substrate

201‧‧‧flat film

202‧‧‧Black matrix

203‧‧‧Color filters

203a‧‧‧Color Filters

203b‧‧‧Color Filters

203c‧‧‧Color 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

L‧‧‧Light

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 "backplane", and a substrate having 200 to 205 is referred to as a "frontplane".

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

[Formation for carrying out the invention]

The liquid crystal composition of the present invention contains a compound represented by the following formula (i) and a compound represented by the formula (ii). Hereinafter, the description of the liquid crystal composition will be made, but "%" which is not particularly indicated means "% by mass". Further, as for the preferable content of each compound, a preferred content of the compound in the case of blending with a liquid crystal composition is exemplified (except for the case where the lower limit value is 0% by mass).

The content of the compound represented by the formula (i) in the liquid crystal composition is not particularly limited, but is preferably 1% by mass or more, and preferably 3% by mass or more, based on the total mass of the liquid crystal composition. The mass% or more is preferably 7% by mass or more, preferably 10% by mass or more, more preferably 14% by mass or more, and preferably 16% by mass or more. On the other hand, in consideration of low-temperature solubility, nematic phase-isotropic liquid phase transfer temperature, electrical reliability, and the like, the content of the compound represented by the formula (i) in the liquid crystal composition is relative to the liquid crystal composition. The total mass is preferably 30% by mass or less, preferably 25% by mass or less, more preferably 22% by mass or less, more preferably 20% by mass or less, and most preferably 19% by mass or less, and preferably 15% by mass or less. Preferably, it is preferably 12% by mass or less, more preferably 10% by mass or less, more preferably 8% by mass or less, and still more preferably 5% by mass or less. In the above, the content of the compound represented by the formula (i) in the liquid crystal composition is preferably from 1 to 30% by mass, and preferably from 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 1 to 19% by mass is preferred, 1 to 8% by mass is preferred, 2 to 6% by mass is preferred, 3 to 8% by mass is preferred, and 5 to 15% by mass is preferred, and 5 to 11% by mass is preferred. The mass % is preferable, 7 to 12 mass% is preferable, 7 to 20 mass% is preferable, 7 to 18 mass% is preferable, and 11 to 16 mass% is preferable.

The content of the compound represented by the formula (ii) in the liquid crystal composition is preferably 3% by mass or more based on the total mass of the liquid crystal composition of the present invention, from the viewpoint of the reaction rate, electrical and optical reliability. 10% by mass or more is preferable, 12% by mass or more is preferable, 15% by mass or more is preferable, 20% by mass or more is preferable, 22% by mass or more is preferable, and 23% by mass or more is preferable. 24% by mass or more is preferable, 30% by mass or more is preferable, and 37% by mass or more is preferable. On the other hand, the content of the compound represented by the formula (ii) in the liquid crystal composition is preferably 60% by mass or less, and 50% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is preferably 46% by mass or less, more preferably 45% by mass or less, more preferably 44% by mass or less, more preferably 42% by mass or less, and 40% by mass or more, preferably 38% by mass. In the following, it is preferably contained in an amount of 36% by mass or less, more preferably 32% by mass or less, more preferably 26% by mass or less, and still more preferably 17% by mass or less. In the above, the content of the compound represented by the formula (ii) in the liquid crystal composition is preferably from 1 to 60% by mass, and from 1 to 50% by mass, based on the total mass of the liquid crystal composition of the present invention. Preferably, 10 to 50% by mass is preferred, 10 to 45% by mass is preferred, 10 to 26% by mass is preferred, 12 to 17% by mass is preferred, and 3 to 15% by mass is preferred, and 5 to 12% by mass is preferred. The mass % is preferably, 15 to 38% by mass is preferred, 15 to 32% by mass is preferred, 20 to 45% by mass is preferred, 20 to 42% by mass is preferred, and 22 to 44% by mass is preferred. 24 to 40% by mass is preferred, 23 to 36% by mass is preferred, 29 to 42% by mass is preferred, 30 to 50% by mass is preferred, 35 to 50% by mass is preferred, and 37 to 46% by mass is preferred. % is preferably, and 30 to 38% by mass is preferred.

The content of the compound represented by the formula (i) and the content of the compound represented by the formula (ii) in the liquid crystal composition are low-temperature solubility, nematic phase-isotropic liquid phase transfer temperature, reaction rate, and electricity. In view of the optical reliability, the content of the compound represented by the formula (i) is 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and the compound represented by the formula (ii) The content is preferably 2% by mass or more and 60% by mass or less, and the content of the compound represented by the formula (i) is 1% by mass or more and 25% by mass or less, and the content of the compound represented by the formula (ii) is 1% by mass. The content of the compound represented by the formula (i) is preferably 1% by mass or more and 19% by mass or less, and the content of the compound represented by the formula (ii) is 10% by mass or more and 50% by mass or less. Preferably.

The total content of the compound represented by the formula (i) and the compound represented by the formula (ii) is preferably 10% by mass or more, and preferably 12% by mass or more, based on the total mass of the liquid crystal composition. 17% by mass or more is preferable, 24% by mass or more is preferable, 25% by mass or more is preferable, 26% by mass or more is preferable, 30% by mass or more is preferable, and 31% by mass or more is preferable, and 40% by mass is preferable. % or more is preferable, 41% by mass or more is preferable, and 51% by mass or more is preferable. On the other hand, the total content of the compound represented by the formula (i) and the compound represented by the formula (ii) is preferably 65 mass% or less and 61 mass% or less based on the total mass of the liquid crystal composition. Preferably, 60% by mass or less is preferable, and 55% by mass or less is preferable, 52% by mass or less is preferable, 49% by mass or less is preferable, 48% by mass or less is preferable, and 46% by mass or less is preferable. Preferably, 44% by mass or less is preferred, and 30% by mass or less is preferred, and 27% by mass is preferred. The following are preferred. In these, the total content of the compound represented by the formula (i) and the compound represented by the formula (ii) is preferably 10 to 65 mass%, and preferably 12 to 61 mass based on the total mass of the liquid crystal composition. % is preferably, 17 to 60% by mass is preferred, 25 to 60% by mass is preferred, 30 to 55% by mass is preferred, 40 to 55% by mass is preferred, and 40 to 50% by mass is preferred. Alternatively, 25 to 50% by mass is preferred, 30 to 50% by mass is preferred, and 30 to 45% by mass is preferred, or 40 to 65% by mass is preferred, and 50 to 65% by mass is preferred, and 51 is preferred. ~61% by mass is preferred, 25 to 50% by mass is preferred, 25 to 45% by mass is preferred, 30 to 45% by mass is preferred, 10 to 30% by mass is preferred, and 12 to 30% by mass is preferred. Preferably, 24 to 27% by weight is preferred.

The liquid crystal composition of the present invention may further contain at least one compound represented by the formula (L).

In the above formula (L), 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 at least two non-adjacent -CH ₂ - groups are independently capable of being -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-substitution.

OL means 0, 1, 2 or 3.

B ^L1 , B ^L2 and B ^L3 are each independently represented as a group selected from the group consisting of: (a) 1,4-cyclohexylene (one -CH ₂ - present in this group or at least two not adjacent) -CH ₂ - may be substituted with -O-), and (b) 1,4-phenylene (1 -CH= or non-contiguous at least 2 -CH= may be substituted for - N=).

At least one of the hydrogen atoms in the above-mentioned group (a) and the group (b) may be independently substituted by a cyano group, a fluorine atom or a chlorine atom.

L ^L1 and L ^L2 are each independently represented by 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-.

When OL is 2 or 3 and L ^L2 has a plurality of cases, they may be the same or different.

When OL is 2 or 3 and B ^L3 has a plurality of cases, they may be the same or different.

However, the compound represented by the above formula (ii) is excluded.

The type of the compound which can be combined is not particularly limited, and it is suitably used in combination according to the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence (refractive index anisotropy). 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 types. Further, another embodiment of the present invention is three types. Furthermore, another embodiment of the present invention is four types. Furthermore, another embodiment of the present invention is five types. Furthermore, another embodiment of the present invention is six types. Furthermore, another embodiment of the present invention is seven types. Furthermore, another embodiment of the present invention is eight types. Furthermore, another embodiment of the present invention is nine types. Furthermore, 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 above formula (L) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The performance of the dielectric anisotropy or the like is appropriately adjusted.

The content of the above compound is, for example, 1 to 95% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is from 10 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 40 to 95% by mass. Further, in another embodiment of the present invention, the content is 50 to 95% by mass. Further, in another embodiment of the present invention, the content is 55 to 95% by mass. Further, in another embodiment of the present invention, the content is 60 to 95% by mass. Further, in another embodiment of the present invention, the content is 65 to 95% by mass. Further, in another embodiment of the present invention, the content is 70 to 95% by mass. Further, in another embodiment of the present invention, the content is 75 to 95% by mass. Further, in another embodiment of the present invention, the content is 80% by mass to 95% by mass.

Further, the content of the above compound, for example, in one embodiment of the present invention, is from 1 to 95% by mass based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content is from 1 to 85% by mass. Further, in another embodiment of the present invention, the content is 1 to 75% by mass. Further, in another embodiment of the present invention, the content is from 1 to 65% by mass. Further, in another embodiment of the present invention, the content is from 1 to 55% by mass. Further, in another embodiment of the present invention, the content is from 1 to 45% by mass. Further, in another embodiment of the present invention, the content is from 1 to 35% by mass. Further, in another embodiment of the present invention, the content is 1% to 25%.

When the viscosity of the liquid crystal composition of the present invention is kept low, and a liquid crystal composition having a high reaction rate is required, it is preferable that the lower limit value is high and the upper limit value is high. 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 having good temperature stability is required, 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 that the lower limit value is low and the upper limit value is low.

When the ring structure in which R ^L1 and R ^{L2 are} bonded is a phenyl (aromatic) group, a linear alkyl group having 1 to 5 carbon atoms and a linear carbon number of 1 to 4 (or more) The alkoxy group or the alkenyl group having 4 to 5 carbon atoms is preferred, and the ring structure of the bond is cyclohexane, piper, or 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 (or more) carbon atoms, or a linear carbon atom The alkenyl group having 2 to 5 atoms is preferred.

In the case where the chemical stability of the liquid crystal composition is sought, it is preferred that the compound represented by the general formula (L) has no 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)

In the above formula (I), R ¹¹ and R ¹² each independently represent 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, and A. ¹¹ and A ¹² are each independently represented by a 1,4-cyclohexylene group, a 1,4-phenylene group, a 2-fluoro-1,4-phenylene group or a 3-fluoro-1,4-phenylene group. However, the compound represented by the above formula (ii) is excluded.

The type of the compound which can be combined is not particularly limited, and it is suitably used in combination with the properties of low temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types. Further, another embodiment of the present invention is three types. Furthermore, another embodiment of the present invention is four types. Furthermore, another embodiment of the present invention is five types. Furthermore, another embodiment of the present invention is six or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The performance of the dielectric anisotropy or the like is appropriately adjusted.

The content of the compound represented by the above formula (I) is, for example, 3 to 75% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 15 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 18 to 75% by mass. Further, in another embodiment of the present invention, the content is 20 to 75% by mass. Further, in another embodiment of the present invention, the content is from 29 to 75% by mass. Further, in another embodiment of the present invention, the content is 35 to 75% by mass. Further, in another embodiment of the present invention, the content is 42 to 75% by mass. Further, in another embodiment of the present invention, the content is from 47 to 75% by mass. Furthermore, another embodiment of the present invention is the aforementioned The amount is 53 to 75% by mass. Further, in another embodiment of the present invention, the content is 56 to 75% by mass. Further, in another embodiment of the present invention, the content is 60 to 75% by mass. Further, in another embodiment of the present invention, the content is 65 to 75% by mass.

In addition, the content of the compound represented by the above formula (I) is, for example, 3 to 65% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 55% by mass. Further, in another embodiment of the present invention, the content is from 3 to 50% by mass. Further, in another embodiment of the present invention, the content is from 3 to 45% by mass. Further, in another embodiment of the present invention, the content is from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is from 3 to 35% by mass. Further, in another embodiment of the present invention, the content is from 3 to 30% by mass.

It is preferable to maintain the viscosity of the liquid crystal composition of the present invention at a low value and to require a liquid crystal composition having a fast reaction rate, and the above lower limit is high and the upper limit is high. Further, in the case where the Tni of the liquid crystal composition of the present invention is maintained at a high value and a liquid crystal composition having good temperature stability is required, the above lower limit is moderate and the upper limit is moderate. Further, in order to maintain the dielectric constant at a low value and to increase the dielectric anisotropy, it is preferable that the lower limit value is a low value and the upper limit value is a low value.

When the ring structure in which R ¹¹ and R ^{12 are} bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, or The alkenyl group having 4 to 5 carbon atoms is preferred, and the ring structure of the bond is cyclohexane, meme or two. 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, or a linear carbon atom having 2 to 5 carbon atoms Alkenyl is preferred.

The compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-1).

In the general formula (I-1), 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. However, the compound represented by the above formula (ii) is excluded.

The kind of the compound which can be combined is not particularly limited, and it is used in an appropriate combination in view of the low temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types. Further, another embodiment of the present invention is three types. Furthermore, another embodiment of the present invention is four types. Furthermore, another embodiment of the present invention is five or more.

In the case where the liquid crystal composition of the present invention is blended with the compound represented by the formula (I-1), the content of the compound is required to be compatible with low-temperature solubility, transfer temperature, electrical reliability, birefringence, and process suitability. The performance of dripping, residual image, dielectric anisotropy, etc. is appropriately adjusted.

The content of the compound represented by the above formula (I-1) is, for example, in the embodiment of the present invention, the content is 3 to 70% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 15 to 70% by mass. Also, this hair In another embodiment of the invention, the content is 18 to 70% by mass. Further, in another embodiment of the present invention, the content is 25 to 70% by mass. Further, in another embodiment of the present invention, the content is from 29 to 70% by mass. Further, in another embodiment of the present invention, the content is from 31 to 70% by mass. Further, in another embodiment of the present invention, the content is 35 to 70% by mass. Further, in another embodiment of the present invention, the content is from 43 to 70% by mass. Further, in another embodiment of the present invention, the content is 47% to 70% by mass. Further, in another embodiment of the present invention, the content is 50% to 70% by mass. Further, in another embodiment of the present invention, the content is 53 to 70% by mass. Further, in another embodiment of the present invention, the content is 56 to 70% by mass.

The content of the compound represented by the above formula (I-1), for example, in one embodiment of the present invention, is from 3 to 60% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 50% by mass. Further, in another embodiment of the present invention, the content is from 3 to 45% by mass. Further, in another embodiment of the present invention, the content is from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is from 3 to 35% by mass. Further, in another embodiment of the present invention, the content is from 3 to 30% by mass. Further, in another embodiment of the present invention, the content is from 3 to 26% by mass.

It is preferable to maintain the viscosity of the liquid crystal composition of the present invention at a low value and to require a liquid crystal composition having a fast reaction rate, and the above lower limit is high and the upper limit is high. Further, in the case where the Tni of the liquid crystal composition of the present invention is maintained at a high value and a liquid crystal composition having good temperature stability is required, the above lower limit is moderate and the upper limit is moderate. Preferably. Further, in order to maintain the dielectric constant at a low value and to increase the dielectric anisotropy, it is preferable that the lower limit value is a low value and the upper limit value is a low value.

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

In the above formula (I-1-1), R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-1-1) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, and dripping trace. The performance of the image, the residual image, and the dielectric anisotropy are appropriately adjusted.

The content of the compound represented by the above formula (I-1-1) is, for example, 1 to 35% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 2 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 30% by mass. Further, in another embodiment of the present invention, the content is 6 to 30% by mass. Further, in another embodiment of the present invention, the content is 8 to 30% by mass. Further, in another embodiment of the present invention, the content is from 9 to 30% by mass. Further, in another embodiment of the present invention, the content is 10% by mass to 30% by mass.

The content of the compound represented by the above formula (I-1-1), for example, in one embodiment of the present invention, is 2 to 26% by mass based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content is 2 to 22% by mass. Further, in another embodiment of the present invention, the content is 2 to 17% by mass. Further, in another embodiment of the present invention, the content is 2 to 16% by mass. Further, in another embodiment of the present invention, the content is 2 to 14% by mass. Further, in another embodiment of the present invention, the content is 2 to 13% by mass. Further, in another embodiment of the present invention, the content is 2 to 12% by mass. Further, in another embodiment of the present invention, the content is 2 to 5% by mass.

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

When the compounds represented by the formula (1.2) or the formula (1.3) are used singly, the content of the compound represented by the formula (1.2) is improved by the reaction rate, and the content of the compound represented by the formula (1.3) is under The range shown can be preferably a liquid crystal composition having a fast reaction speed and high electrical and optical reliability.

The content of the compound represented by the formula (1.3) is, for example, 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 25% by mass. Further, in another embodiment of the present invention, the content is 6 to 25% by mass. Further, in another embodiment of the present invention, the content is 7 to 25% by mass. Further, in another embodiment of the present invention, the content is 8 to 25% by mass. Further, in another embodiment of the present invention, the content is 9 to 25% by mass. Further, in another embodiment of the present invention, the content is 10 to 25% by mass.

The content of the compound represented by the above formula (1.3) with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 22% by mass in one embodiment of the present invention. Furthermore, in another embodiment of the present invention, the content is 2 to 18% by mass. Further, in another embodiment of the present invention, the content is 2 to 17% by mass. Further, in another embodiment of the present invention, the content is 2 to 16% by mass. Further, in another embodiment of the present invention, the content is 2 to 14% by mass. Further, in another embodiment of the present invention, the content is 2 to 13% by mass. Further, in another embodiment of the present invention, the content is 2 to 5% by mass.

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

In the above formula (I-1-2), R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms. However, the compound represented by the above formula (ii) is excluded.

The kind of the compound which can be combined is not particularly limited, and it is used in an appropriate combination in view of the low temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types. Further, another embodiment of the present invention is three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-2) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, The performance of the afterimage, dielectric anisotropy, etc. is appropriately adjusted.

The content of the compound represented by the above formula (I-1-2) is, for example, 1 to 25% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 25% by mass. Further, in another embodiment of the present invention, the content is 6 to 25% by mass. Further, in another embodiment of the present invention, the content is 7 to 25% by mass. Further, in another embodiment of the present invention, the content is 8 to 25% by mass. Further, in another embodiment of the present invention, the content is 9 to 25% by mass. Furthermore, another embodiment of the present invention is that the aforementioned content is 10 to 25 quality%.

In addition, the content of the compound represented by the formula (I-1-2) is, for example, 2 to 22% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content is 2 to 18% by mass. Further, in another embodiment of the present invention, the content is 2 to 17% by mass. Further, in another embodiment of the present invention, the content is 2 to 16% by mass. Further, in another embodiment of the present invention, the content is 2 to 14% by mass. Further, in another embodiment of the present invention, the content is 2 to 13% by mass.

Further, the compound represented by the formula (I-1-2) is preferably a compound selected from at least one of the compound groups represented by the formula (2.1), the formula (2.3), and the formula (2.4), and the formula (I) The compounds represented by 2.3) and/or formula (2.4) are preferred. The content of the compound represented by the formula (2.3) and the formula (2.4) is preferably 30% by mass or more in order to improve the solubility at a low temperature.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.3) is preferably 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 5% by mass or more and 20% by mass. The amount of % or less is preferably 10% by mass or more and 15% by mass or less, and preferably 6% by mass or more and 15% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.4) is preferably 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 5% by mass or more and 20% by mass. It is more preferably 100% or less, more preferably 10% by mass or more and 15% by mass or less, and more preferably 6% by mass or more and 15% 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).

It is preferred to adjust the content of the compound represented by the above formula (2.5) in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and the compound is relative to the liquid crystal composition of the present invention. The total mass is preferably from 0 to 40% by mass, preferably from 10 to 40% by mass, more preferably from 15 to 35% by mass.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-2).

In the above formula (I-2), R ¹³ and R ¹⁴ each independently represent an alkyl group having 1 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, and is combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types. Further, another embodiment of the present invention is three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-2) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. The performance of the shadow, dielectric anisotropy, etc. is appropriately adjusted.

The content of the compound represented by the above formula (I-2) is, for example, 1 to 30% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 2 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 30% by mass. Further, in another embodiment of the present invention, the content is 6 to 30% by mass. Further, in another embodiment of the present invention, the content is 10% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 15 to 30% by mass. Further, in another embodiment of the present invention, the content is 20% by mass to 30% by mass.

In addition, the content of the compound represented by the formula (I-2) is, for example, 1 to 25% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content is 1% to 23% by mass. In addition, another embodiment of the present invention The above-mentioned content is 1 to 18% by mass. Further, in another embodiment of the present invention, the content is from 1 to 15% by mass. Further, in another embodiment of the present invention, the content is 1 to 12% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 10% by mass. Further, in another embodiment of the present invention, the content is 1 to 5% by mass.

Further, the compound represented by the above formula (I-2) is preferably at least one compound selected from the group consisting of compounds represented by formula (3.1) to formula (3.4), and formula (3.1), formula (3.3) and / or a compound represented by the formula (3.4) is preferred. In particular, the compound represented by the formula (3.2) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention. Further, in the case of Tni having a higher reaction rate, it is preferred to use a compound represented by the formula (3.3) and/or the formula (3.4). The content of the compound represented by the formula (3.3) and the formula (3.4) is preferably 20% by mass or more in order to improve the solubility at a low temperature.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (3.3) is preferably 2% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention. Better content For example, it can be exemplified by 3% by mass or more and 40% by mass or less, 4% by mass or more and 40% by mass or less, 10% by mass or more and 40% by mass or less, 12% by mass or more and 40% by mass or less, and 14% by mass or more and 40% by mass or less. Hereinafter, 16% by mass or more and 40% by mass or less, 20% by mass or more and 40% by mass or less, 23% by mass or more and 40% by mass or less, 26% by mass or more and 40% by mass or less, 30% by mass or more and 40% by mass or less, and 34% by mass or less 40% by mass or less, 37% by mass or more and 40% by mass or less, or 3% by mass or more and 4% by mass or less, 3% by mass or more and 10% by mass or less, 3% by mass or more and 12% by mass or less, and 3% by mass or more and 14% by mass or less. 3% by mass or more and 16% by mass or less, 3% by mass or more and 20% by mass or less, 3% by mass or more and 23% by mass or less, 3% by mass or more and 26% by mass or less, 3% by mass or more and 30% by mass or less, and 3% by mass or less The above 34% by mass or less, and 3% by mass or more and 37% by mass or less.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-3).

In the above formula (I-3), 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 kind of the compound which can be combined is not particularly limited, and can be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type of the embodiment of the present invention. Or another implementation of the invention There are two types of morphology. Further, another embodiment of the present invention is three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-3) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. The performance of the shadow, dielectric anisotropy, etc. is appropriately adjusted.

The content of the compound represented by the above formula (I-3) is, for example, from 3 to 60% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 4 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 60% by mass. Further, in another embodiment of the present invention, the content is 25 to 60% by mass. Further, in another embodiment of the present invention, the content is 30% to 60% by mass. Further, in another embodiment of the present invention, the content is 35 to 60% by mass. Further, in another embodiment of the present invention, the content is 38 to 60% by mass. Further, in another embodiment of the present invention, the content is 40 to 60% by mass. Further, in another embodiment of the present invention, the content is 42 to 60% by mass. Further, in another embodiment of the present invention, the content is 45 to 60% by mass. Further, in another embodiment of the present invention, the content is from 47 to 60% by mass. Further, in another embodiment of the present invention, the content is 50 to 60% by mass.

Further, the content of the above compound, for example, in one embodiment of the present invention, is from 3 to 55% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 45% by mass. Further, in another embodiment of the present invention, the content is from 3 to 40% by mass. Furthermore, another embodiment of the present invention is before The content is 3 to 30% by mass. Further, in another embodiment of the present invention, the content is 3 to 20% by mass. Further, in another embodiment of the present invention, the content is from 3 to 15% by mass. Further, in another embodiment of the present invention, the content is 3 to 5% by mass.

When the solubility in low temperature is emphasized, the effect is high, and conversely, the reaction rate is emphasized. When the content is set to be small, the effect is high. Further, in the case where the characteristics of the drop or the residual image are improved, it is preferred to set the content range in the middle.

Further, the compound represented by the above formula (I-3) is preferably at least one compound selected from the group consisting of compounds represented by formula (4.1) to formula (4.3), and the compound represented by formula (4.3) is preferably Preferably.

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

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-4).

In the above formula (I-4), 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 kind of the compound which can be combined is not particularly limited, and can be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-4) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. The performance of the shadow, dielectric anisotropy, etc. is appropriately adjusted.

The content of the compound represented by the above formula (I-4) is, for example, 2 to 50% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 5 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 6 to 50% by mass. Furthermore, another of the present invention In one embodiment, the content is 8 to 50% by mass. Further, in another embodiment of the present invention, the content is 10% by mass to 50% by mass. Further, in another embodiment of the present invention, the content is from 12 to 50% by mass. Further, in another embodiment of the present invention, the content is 15 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 25 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, the content of the above compound, for example, in one embodiment of the present invention, is from 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 2 to 35% by mass. Further, in another embodiment of the present invention, the content is 2 to 30% by mass. Further, in another embodiment of the present invention, the content is 2 to 20% by mass. Further, in another embodiment of the present invention, the content is 2 to 15% by mass. Further, in another embodiment of the present invention, the content is 2 to 10% by mass.

In the case where a high birefringence is obtained, the effect is high when the content is set to be large, and conversely, the case where the high Tni is emphasized, and the effect is high when the content is set to be small. Further, in the case of improving the characteristics of dripping marks or afterimages, it is preferred to set the content range in the middle.

Further, the compound represented by the formula (I-4) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (5.1) to (5.4), and is selected from the group consisting of the formula (5.2) to the formula (5.4). At least one compound of the compound group shown is preferred.

The content of the compound represented by the above formula (5.4) is preferably 2% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention. In the above, for example, 4% by mass or more and 30% by mass or less, 6% by mass or more and 30% by mass or less, 8% by mass or more and 30% by mass or less, 10% by mass or more and 30% by mass or less, and 12% by mass or more and 30% by mass or less. 14% by mass or more and 30% by mass or less, 16% by mass or more and 30% by mass or less, 18% by mass or more and 30% by mass or less, 20% by mass or more and 30% by mass or less, 22% by mass or more and 30% by mass or less, and 23% by mass or more. 30% by mass or less, 24% by mass or more and 30% by mass or less, 25% by mass or more and 30% by mass or less, or 4% by mass or more and 6% by mass or less, 4% by mass or more and 8% by mass or less, 4% by mass or more and 10% by mass or less. 4% by mass or more and 12% by mass or less, 4% by mass or more and 14% by mass or less, 4% by mass or more and 16% by mass or less, 4% by mass or more and 18% by mass or less, 4% by mass or more and 20% by mass or less, and 4% by mass or more. 22% by mass or less, 4% by mass or more and 23% by mass or less, 4% by mass or more and 24% by mass or less, and 4% by mass or more and 25% by mass or less are preferable.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-5).

In the above formula (I-5), R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and R ¹² represents a carbon number. An alkyl group of 1 to 5, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and can be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-5) is required to satisfy the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. The performance of the shadow, dielectric anisotropy, etc. is appropriately adjusted.

The content of the compound represented by the above formula (I-5) is, for example, 1 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 5 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 50% by mass. Further, in another embodiment of the present invention, the content is from 11 to 50% by mass. Further, in another embodiment of the present invention, the content is from 13 to 50% by mass. In addition, In another embodiment of the present invention, the content is 15 to 50% by mass. Further, in another embodiment of the present invention, the content is from 17 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 25 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the compound represented by the above formula (I-5) is, for example, 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 1 to 35% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 20% by mass. Further, in another embodiment of the present invention, the content is from 1 to 15% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 10% by mass. Further, in another embodiment of the present invention, the content is 1 to 5% by mass.

When the solubility in low temperature is emphasized, the effect is high when the content is increased, and conversely, 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 dripping marks or afterimages, it is preferred to set the content range in the middle.

Further, the compound represented by the above formula (I-5) is preferably at least one compound selected from the group consisting of compounds represented by formula (6.1) to formula (6.6), and formula (6.3) and formula (6.4). And/or a compound represented by the formula (6.6) is preferred.

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

The liquid crystal composition of the present invention may further contain a compound represented by the formula (6.7) and/or the formula (6.8) which is a compound represented by the formula (I-5).

It is preferred to adjust the content of the compound represented by the above formula (6.7) in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and the total mass of the liquid crystal composition of the present invention. The compound is preferably 2% by mass or more, more preferably 3% by mass or more, more preferably 5% by mass or more, and most preferably 7% by mass or more.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-6).

In the above formula (I-6), 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, X. ¹¹ and X ¹² are each independently represented by a fluorine atom or a hydrogen atom, and any of X ¹¹ or X ¹² is a fluorine atom.

The content of the compound represented by the above formula (I-6) is preferably 2% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 4% by mass or more and 30% by mass or less is more. Good, 5 The mass% or more is preferably 30% by mass or less, preferably 6 mass% or more and 30 mass% or less, more preferably 9 mass% or more and 30 mass% or less, more preferably 12 mass% or more and 30 mass% or less, and preferably 14 mass%. 30 mass% or less is preferable, 16 mass% or more and 30 mass% or less are preferable, 18 mass% or more and 25 mass% or less are preferable, and 20 mass% or more and 24 mass% or less are preferable, and 22 mass% or more is preferable. The mass % or less is preferred.

Further, the compound represented by the formula (I-6) is preferably a compound represented by the formula (7.1).

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

In the above formula (I-7), 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. X ¹² represents a fluorine atom or a chlorine atom.

The content of the compound represented by the above formula (I-7) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 1% by mass or more and 15% by mass or less is more preferable. Preferably, it is preferably 1% by mass or more and 10% by mass or less, and preferably 1% by mass or more and 5% by mass or less.

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

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-8).

In the above formula (I-8), R ¹⁶ and R ¹⁷ each independently represent an alkenyl group having 2 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, and it is preferable to combine one to three kinds in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (I-8) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. The performance is preferably 1 to 30% by mass, preferably 1 to 25% by mass, more preferably 1 to 20% by mass, and 1 to 18% by mass, based on the total mass of the liquid crystal composition of the present invention. Preferably, 3 to 18% by mass is preferred.

Further, the compound represented by the above formula (I-8) is preferably at least one compound selected from the group consisting of compounds represented by formula (9.1) to formula (9.10), and formula (9.2) and formula (9.4). And/or a compound represented by the formula (9.7) is preferred.

Alternatively, the compound represented by the above formula (L) is preferably a compound selected from at least one of the compounds represented by the formula (II).

In the above formula (II), 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 1,4-cyclohexylene or 1,4-phenylene, and Q ² represents a single bond, -COO-, -CH ₂ -CH ₂ - or CF ₂ O-.

The kind of the compound which can be combined is not particularly limited, and can be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types. Further, still another embodiment of the present invention is three types. Furthermore, another embodiment of the present invention is four or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (II) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The performance of the dielectric anisotropy or the like is appropriately adjusted.

The content of the compound represented by the above formula (II) is, for example, 3 to 50% by mass based on one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 5 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 7 to 50% by mass. Further, in another embodiment of the present invention, the content is 10% by mass to 50% by mass. Further, in another embodiment of the present invention, the content is 14 to 50% by mass. Further, in another embodiment of the present invention, the content is 16 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 23 to 50% by mass. Furthermore, another embodiment of the present invention is that the aforementioned content is 26~50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the compound represented by the above formula (II), for example, in one embodiment of the present invention, is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 35% by mass. Further, in another embodiment of the present invention, the content is from 3 to 30% by mass. Further, in another embodiment of the present invention, the content is 3 to 20% by mass. Further, in another embodiment of the present invention, the content is from 3 to 15% by mass. Further, in another embodiment of the present invention, the content is 3 to 10% by mass. Further, in another embodiment of the present invention, the content is 3 to 5% by mass.

In addition, the compound represented by the above formula (II) is preferably a compound selected from the group consisting of at least one compound represented by the formula (II-1).

In the above formula (II-1), R ²¹ and R ²² each independently represent 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 above formula (II-1) is preferably adjusted in accordance with the low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more and 24% by mass or less. for Preferably, it is preferably 8 mass% or more and 18 mass% or less, and more preferably 12 mass% or more and 14 mass% or less.

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

In addition, it is preferred that the compound represented by the above formula (II) is at least one selected from the group consisting of compounds represented by the formula (II-2).

In the above formula (II-2), 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 kind of the compound which can be combined is not particularly limited, and can be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (II-2) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. The performance of the shadow, dielectric anisotropy, etc. is appropriately adjusted.

The content of the compound represented by the above formula (II-2) is, for example, from 3 to 35% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 4 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 5 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 35% by mass. Further, in another embodiment of the present invention, the content is from 9 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 10 to 35 mass%. Furthermore, in another embodiment of the present invention, the content is 11 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 35% by mass. Further, in another embodiment of the present invention, the content is 13% by mass to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 35 mass%. Furthermore, in another embodiment of the present invention, the content is 20 to 35% by mass.

In addition, the content of the compound represented by the above formula (II-2) is, for example, 3 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 26% by mass. Further, in another embodiment of the present invention, the content is 3 to 20% by mass. Further, in another embodiment of the present invention, the content is from 3 to 16% by mass. Further, in another embodiment of the present invention, the content is from 3 to 15% by mass. Further, in another embodiment of the present invention, the content is from 3 to 14% by mass. Further, in another embodiment of the present invention, the content is from 3 to 13% by mass. Further, in another embodiment of the present invention, the content is from 3 to 12% by mass. Furthermore, another embodiment of the present invention is that the aforementioned content is 3 to 10% by mass. Further, in another embodiment of the present invention, the content is 3 to 9% by mass. Further, in another embodiment of the present invention, the content is 3 to 7% by mass.

In addition, the compound represented by the above formula (II-2) is preferably a compound selected from the group consisting of at least one compound represented by the formula (11.1) to the formula (11.3).

The compound represented by the formula (11.1) may be contained in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and may also contain a compound represented by the formula (11.2), or may contain a formula ( 11.1) Both the compound represented by the formula (11.2) 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 above formula (11.1) is preferably from 1 to 30% by mass, preferably from 2 to 25% by mass, and from 2 to 20% by mass, based on the total mass of the liquid crystal composition of the present invention. good. In these, for example, 2 to 10% by mass, 3 to 7 mass%, 3 to 5 mass%, 4 to 12 mass%, 5 to 15 mass%, 6 to 14 mass%, 6 to 13 mass%, 8~ 15% by mass, 12 to 20% by mass, and 13 to 16% by mass are preferred.

Further, the content of the compound represented by the above formula (11.2) is preferably 1 to 30% by mass, preferably 1 to 25% by mass, and preferably 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 1 to 17% by mass is preferred. In this case, for example, one embodiment is preferably 1 to 11% by mass, 3 to 11% by mass is preferred, 5 to 11% by mass is preferred, and 6 to 11% by mass is preferred, and 9 to 11% by mass is preferred. % is preferable, and another embodiment is preferably 2 to 15% by mass, 2 to 9% by mass is preferred, 4 to 5% by mass is preferred, and another embodiment is 5 to 17% by mass. Preferably.

When both the compound represented by the above formula (11.1) and the compound represented by the above formula (11.2) are contained, the total mass of the compound of the two is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention. The mass% or less is preferably 1% by mass or more and 40% by mass or less, preferably 1% by mass or more and 35% by mass or less, more preferably 1% by mass or more and 30% by mass or less, and 3% by mass or more and 30% by mass or less. The following is preferable, and 3 mass% or more and 26 mass% or less are preferable, and 3 mass% or more and 20 mass% or less are preferable, and 3 mass% or more and 16 mass% or less are preferable, and 3 mass% or more and 15 mass% or less are preferable. Preferably, it is preferably 3% by mass or more and 14% by mass or less, more preferably 3% by mass or more and 13% by mass or less, more preferably 3% by mass or more and 12% by mass or less, and still more preferably 3% by mass or more and 10% by mass or less. 3% by mass or more and 9% by mass or less is preferable, and 3% by mass or more and 7% by mass or less is preferable, and 4% by mass or more and 30% by mass or less is preferable, and 5% by mass or more and 30% by mass or less is preferable, and 8 is preferable. More preferably, the mass% is 30% by mass or less, more preferably 9% by mass or more and 30% by mass or less, and more preferably 10% by mass or more and 30% by mass or less. , More than 11 mass% is preferably 30 mass%, 12 mass% to 30 mass% The lower portion is preferably 13% by mass or more and 30% by mass or less, more preferably 15% by mass or more and 30% by mass or less. In the above, for example, 4% by mass or more and 12% by mass or less, 5% by mass or more and 9% by mass or less, 8% by mass or more and 13% by mass or less, 9% by mass or more and 14% by mass or less, and 12% by mass or more and 16% by mass or less. 11% by mass or more and 26% by mass or less, and 11% by mass or more and 20% by mass or less are preferable.

Alternatively, the compound represented by the above formula (II) is preferably a compound selected from the group consisting of at least one compound represented by the formula (II-3).

In the above formula (II-3), 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 which can be combined is not particularly limited, and it is preferable to contain one to three kinds of these compounds in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (II-3) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. The performance is appropriately adjusted.

The preferred content of the compound represented by the above formula (II-3) is, for example, 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention. In this case, for example, 5 to 45 mass%, 8 to 45 mass%, and 11 to 45 Mass%, 14 to 45 mass%, 17 to 45 mass%, 20 to 45 mass%, 23 to 45 mass%, 26 to 45 mass%, 29 to 45 mass%, or 2 to 45 mass%, 2 to 40 mass %, 2 to 35% by mass, 2 to 30% by mass, 2 to 25% by mass, 2 to 20% by mass, 2 to 15% by mass, and 2 to 10% by mass are more preferable.

In addition, the compound represented by the above formula (II-3) is preferably a compound selected from the group consisting of at least one compound represented by the formula (12.1) to the formula (12.3).

The compound represented by the formula (12.1) may be contained in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and may also contain a compound represented by the formula (12.2), or may contain a formula ( 12.1) Both the compound represented by the formula and the compound represented by the formula (12.2).

The content of the compound represented by the formula (12.1) is preferably 3% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 5% by mass or more and 40% by mass or less, and 7 mass%. More preferably, the amount is preferably 40% by mass or more, more preferably 9% by mass or more and 40% by mass or less, more preferably 11% by mass or more and 40% by mass or less, more preferably 12% by mass or more and 40% by mass or less, and more preferably 13% by mass or more. 40% by mass or less is preferable, and 18% by mass or more and 30% by mass or less is preferable, and 21% by mass or more and 25% by mass or less is preferable.

Further, the content of the compound represented by the formula (12.2) is preferably 3% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 5% by mass or more and 40% by mass or less. 8 mass% or more and 40 mass% or less are preferable, and 10 mass% or more and 40 mass% or less are preferable, and 12 mass% or more and 40 mass% or less are preferable, and 15 mass% or more and 40 mass% or less are preferable, and 17 mass% is preferable. It is preferable that it is 30% by mass or more and more preferably 19% by mass or more and 25% by mass or less.

When both the compound represented by the formula (12.1) and the compound represented by the formula (12.2) are contained, the total mass of the compound of the two is 15 mass% or more and 45 mass% based on the total mass of the liquid crystal composition of the present invention. % or less is preferable, and 19% by mass or more and 45% by mass or less is preferable, and 24% by mass or more and 40% by mass or less is preferable, and 30% by mass or more and 35% by mass or less is preferable.

In addition, the content of the compound represented by the formula (12.3) is preferably 0.05% by mass or more and 2% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 0.1% by mass or more and 1% by mass or less. 0.2% by mass or more and 0.5% by mass or less is preferred. 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, at least one compound selected from the group consisting of the compounds represented by the formula (II-3-1) is preferred.

In the above formula (II-3-1), 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 which can be combined is not particularly limited, and it is preferable to contain one to three kinds of these compounds in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (II-3-1) is preferably adjusted in accordance with the performance of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 1% by mass or more and 24%. The mass% or less is preferably 4 mass% or more and 18 mass% or less, and preferably 6 mass% or more and 14 mass% or less.

Further, the compound represented by the formula (II-3-1) is preferably a compound selected from the group consisting of at least one compound represented by the formula (13.1) to the formula (13.4), and particularly, the formula (13.3) The compound represented is preferred.

Alternatively, the compound represented by the above formula (II) is preferably a compound selected from the group consisting of at least one compound represented by the formula (II-4).

In the above formula (II-4), 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. .

It is preferable to contain only one of these compounds, and it may contain two or more types, and it is preferable to mix suitably according to the performance requested. The type of the compound which can be combined is not particularly limited, and it is preferable to contain one or two of these compounds in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 3 kinds are better.

The content of the compound represented by the formula (II-4) is preferably 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 2% by mass or more and 15% by mass or less. 3 mass% or more and 15 mass% or less are preferable, and 4 mass% or more and 12 mass% or less are preferable, and 5 mass% or more and 7 mass% or less are preferable.

Further, the compound represented by the formula (II-4), for example, at least one compound selected from the group consisting of the compounds represented by the formulae (14.1) to (14.5) is preferable, particularly, the formula (14.2), and/or Or a compound represented by the formula (14.5) is preferred.

Alternatively, the compound represented by the above formula (L) is preferably at least one compound selected from the group consisting of compounds represented by the formula (III).

In the above formula (III), R ³¹ and R ³² each independently represent 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 above formula (III) is preferably 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of the solubility or the birefringence of the liquid crystal composition. It is preferably 2% by mass or more and 20% by mass or less, and more preferably 2% by mass or more and 15% by mass or less.

Further, the compound represented by the above formula (III), for example The compound represented by the formula (15.1) and/or the formula (15.2) is preferred, and in particular, the compound represented by the formula (15.1) is preferred.

Further, the compound represented by the formula (III) is preferably a compound selected from at least one of the compound groups represented by the formula (III-1).

In the above formula (III-1), R ³³ represents an alkenyl group having 2 to 5 carbon atoms, and R ³² represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (III-1) is preferably adjusted in accordance with the properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is preferably in comparison with the liquid crystal composition of the present invention. The total mass is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass or more and 18% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

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

Alternatively, the compound represented by the above formula (III) is preferably at least one compound selected from the group consisting of compounds represented by the formula (III-2).

In the above 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 above formula (III-2) is preferably adjusted in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is equivalent to the liquid crystal composition of the present invention. The total mass is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass or more and 18% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (III-2), for example, at least one compound selected from the group consisting of the compounds represented by the formulae (17.1) to (17.3) is preferable, and particularly represented by the formula (17.3). Compounds are preferred.

Further, it is preferable that the compound represented by the above formula (L) is at least one compound selected from the group consisting of compounds represented by the formula (IV).

In the above formula (IV), 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 each of X ⁴¹ and X ^{42 is} independently represented by a hydrogen atom or fluorine. atom.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined in view of the low temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types. Furthermore, another embodiment of the present invention is three types. Furthermore, another embodiment of the present invention is four types. Furthermore, another embodiment of the present invention is five types. Furthermore, another embodiment of the present invention is six or more.

In addition, the compound represented by the above formula (IV) is preferably a compound selected from the group consisting of at least one compound represented by the formula (IV-1).

In the above formula (IV-1), R ⁴³ and R ⁴⁴ each independently represent an alkyl group having 1 to 5 carbon atoms.

The content of the compound represented by the above formula (IV-1) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. The performance is appropriately adjusted.

The content of the compound represented by the above formula (IV-1) is, for example, 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 30% by mass. Further, in another embodiment of the present invention, the content is 4 to 30% by mass. Further, in another embodiment of the present invention, the content is 6 to 30% by mass. Further, in another embodiment of the present invention, the content is 11% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 20% by mass to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound represented by the above formula (IV-1) is from 1 to 26% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 1% by mass to 20% by mass. Further, in another embodiment of the present invention, the content is from 1 to 16% by mass. Further, in another embodiment of the present invention, the content is 1% to 6% by mass. Further, in another embodiment of the present invention, the content is 1 to 5% by mass.

Further, the compound represented by the formula (IV-1) is preferably a compound selected from at least one of the compound groups represented by the formulae (18.1) to (18.9), for example.

The type of the compound which can be combined is not particularly limited, and one to three kinds of the compounds are preferably used, and more preferably one to four. Also, because of the broad molecular weight distribution of the selected compounds, solubility is also It is effective, for example, one compound selected from the formula (18.1) or (18.2), one compound represented by the formula (18.4) or (18.5), and one represented by the formula (18.6) or the formula (18.7). It is preferred to select one of the compounds, and it is preferred to use such a suitable combination. Among them, a compound represented by the formula (18.1), the formula (18.3), the formula (18.4), the formula (18.6) and the formula (18.9) is preferred.

In the case where only one type is contained, the compound represented by the formula (18.4) is preferably selected, and when two types are contained, the compounds represented by the formulas (18.1) and (18.6) are preferably selected, and three kinds of cases are preferable. It is preferred to select the compounds represented by the formulae (18.1), (18.4) and (18.6).

In addition, it is preferred that the compound represented by the above formula (IV) is, for example, at least one compound selected from the group consisting of the compounds represented by the formula (IV-2).

In the above formula (IV-2), 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 2 to 5 carbon atoms. The alkenyl group, X ⁴¹ and X ⁴² are each independently represented by a hydrogen atom or a fluorine atom.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined in response to the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IV-2) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, and the system. The performance of the process suitability, dripping traces, afterimage, dielectric anisotropy, etc., is necessary to adjust. For example, the content of the compound represented by the above formula (IV-2) is preferably from 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. For better content, for example, 1 to 15% by mass, 2 to 15% by mass, 5 to 15% by mass, 8 to 15% by mass, 2 to 15% by mass, 5 to 15% by mass, and 8 to 15 can be exemplified. Mass%, 1 to 4% by mass, 3 to 7% by mass, or 7 to 13% by mass.

Further, the compound represented by the formula (IV-2) is preferably a compound selected from the group consisting of at least one compound represented by the formula (19.1) to the formula (19.8), wherein the compound represented by the formula (19.2) is preferable. Compounds are preferred.

Since the molecular weight distribution of the compound selected as a component of the liquid crystal composition is also effective for solubility, from the viewpoint of improving the solubility of the liquid crystal composition, for example, the compound represented by the formula (19.1) or (19.2) is selected. One type of the compound represented by the formula (19.3) or (19.4) is selected, and one compound selected from the formula (19.5) or the formula (19.6) is selected from the formula (19.7) or (19.8). Compounds are selected as one of the compounds, and such suitable combinations are preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (19.4) is considered to be 3% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 25 mass% or less is preferable, and 5 mass% or more and 20 mass% or less are preferable, and 5 mass% or more and 15 mass% or less are preferable, and 7 mass% or more and 10 mass% or less are preferable.

Further, the compound represented by the formula (L) is preferably a compound selected from at least one of the compound groups represented by the formula (V).

In the above formula (V), 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 A ⁵¹ And A ⁵² are each independently represented by a 1,4-cyclohexylene group or a 1,4-phenylene group, Q ⁵ represents a single bond or -COO-, and X ⁵¹ and X ⁵² are each independently represented by a fluorine atom or a hydrogen atom.

The types of compounds that can be combined are not particularly limited, and The combination of low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like is suitably combined. 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 types. Furthermore, another embodiment of the present invention is three types. Furthermore, another embodiment of the present invention is four types.

The content of the compound represented by the above formula (V) with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 40% by mass in one embodiment. Further, in another embodiment of the present invention, the content is 4 to 40% by mass. Further, in another embodiment of the present invention, the content is 7 to 40% by mass. Further, in another embodiment of the present invention, the content is 10% by mass to 40% by mass. Further, in another embodiment of the present invention, the content is from 12 to 40% by mass. Further, in another embodiment of the present invention, the content is 15 to 40% by mass. Further, in another embodiment of the present invention, the content is from 17 to 40% by mass. Further, in another embodiment of the present invention, the content is from 18 to 40% by mass. Further, in another embodiment of the present invention, the content is 20 to 40% by mass. Further, in another embodiment of the present invention, the content is 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content of the compound is from 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 15% by mass. Furthermore, another embodiment of the present invention is that the content of the aforementioned compound is 2 to 10% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 5% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

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

In the above formula (V-1), 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. X ⁵¹ and X ⁵² are each independently represented by a fluorine atom or a hydrogen atom.

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

In the above formula (V-1-1), 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. base.

The compound represented by the above formula (V-1-1) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 2% by mass or more and 10% by mass or less. More preferably, it is more preferably 3% by mass or more and 10% by mass or less, and particularly preferably 3% by mass or more and 7% by mass or less.

Further, the compound represented by the formula (V-1-1) is preferably a compound selected from the group consisting of at least one compound represented by the formula (20.1) to the formula (20.4), and a compound represented by the formula (20.2). It is better.

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

In the above formula (V-1-2), 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. base.

The compound represented by the above formula (V-1-2) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 1% by mass or more and 10% by mass or less. Preferably, it is preferably 1% by mass or more and 7% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.

Further, the compound represented by the formula (V-1-2) is a compound selected from at least one of the compound groups represented by the formula (21.1) to the formula (21.3). Preferably, the compound represented by the formula (21.1) is preferred.

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

In the above formula (V-1-3), 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. base.

The compound represented by the above formula (V-1-3) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 2% by mass or more and 15% by mass or less. Preferably, it is preferably 3% by mass or more and 10% by mass or less, and more preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-3) is preferably a compound selected from the group consisting of at least one compound represented by the formula (22.1) to the formula (22.3), and a compound represented by the formula (22.1). For better.

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

In the above formula (V-2), 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. X ⁵¹ and X ⁵² are each independently represented by a fluorine atom or a hydrogen atom.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined in view of the low temperature solubility, transfer temperature, electrical reliability, and birefringence. 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.

The content of the compound represented by the above formula (V-2) is, for example, 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content of the compound is from 4 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. In addition, this issue In another embodiment, the content of the compound is from 10 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 15 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 17 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 18 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 20 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound represented by the above formula (V-2) is from 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content of the compound is from 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 15% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 10% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 5% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

In the case where the liquid crystal composition of the present invention is desired to have a high Tni embodiment, it is preferable to form a plurality of compounds represented by the above formula (V-2), and it is preferable to use a low viscosity embodiment. It is better.

Further, the compound represented by the above formula (V-2) is passed The compound represented by the formula (V-2-1) is preferred.

In the above formula (V-2-1), 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. base.

Further, the compound represented by the above formula (V-2-1) is preferably a compound selected from at least one of the compound groups represented by the formula (23.1) to the formula (23.4), and the formula (23.1) and/or Or a compound represented by the formula (23.2) is preferred.

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

In the above formula (V-2-2), 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. base.

The compound represented by the above formula (V-2-2) is preferably contained in an amount of 2% by mass or more and 16% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 3% by mass or more and 13% by mass or less. Preferably, it is preferably 4% by mass or more and 10% by mass or less.

Further, the compound represented by the above formula (V-2-2) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (24.1) to the formula (24.4), and the formula (24.1) and/or The compound represented by the formula (24.2) is preferred.

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

In the above formula (V-3), 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 kind of the compound which can be combined is not particularly limited, and may be suitably combined by the solubilization properties such as hard low temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types. Furthermore, another embodiment of the present invention is three or more.

The compound represented by the above formula (V-3) is preferably contained in an amount of 2% by mass or more and 16% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 4% by mass or more and 16% by mass or less. It is preferably 7 mass% or more and 13 mass% or less, and preferably 8 mass% or more and 11 mass% or less.

Further, the compound represented by the formula (V-3) is preferably a compound selected from at least one of the compound groups represented by the formula (25.1) to the formula (25.3).

Further, the compound represented by the above formula (V) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (V-4).

In the above formula (V-4), 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 above formula (V-4) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 2% by mass or more and 15% by mass or less. It is preferably 3% by mass or more and 10% by mass or less, and more preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-4) is preferably a compound selected from at least one of the compound groups represented by the formula (25.11) to the formula (25.13), and the compound represented by the formula (25.13) is more. good.

Further, the compound represented by the above formula (L) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (V'-5).

In the above formula (V'-5), 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. .

The compound represented by the above formula (V'-5) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 2% by mass or more and 15% by mass or less. Preferably, it is preferably 2% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (V'-5) is preferably a compound selected from the group consisting of at least one compound represented by the formula (25.21) to the formula (25.24), and the formula (25.21) and/or the formula ( 25.23) The compound represented is more preferred.

The liquid crystal composition of the present invention may further contain at least one compound represented by the formula (VI).

In the above formula (VI), 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 straight 2 to 10 carbon atom. Alkenyl.

The type of the compound which can be combined is not particularly limited, and it is preferable to blend one or three of these compounds in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 1~4 kinds are better, and 1~5 kinds are more excellent.

The content of the compound represented by the above formula (VI) is preferably from 0 to 35 mass%, more preferably from 0 to 25 mass%, and from 0 to 15 mass%, based on the total mass of the liquid crystal composition of the present invention. Preferably.

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

The liquid crystal composition of the present invention may further contain at least one compound represented by the formula (VII).

In the above formula (VII), 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 straight 4 to 10 carbon atom. Alkenyl.

The type of the compound which can be combined is not particularly limited, and it is preferable to blend one or three kinds of compounds selected from these compounds in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is better to blend 1~4 kinds, and it is especially good to contain 1~5 kinds or more.

The content of the compound represented by the above formula (VII) is preferably from 0 to 35 mass%, more preferably from 0 to 25 mass%, and more preferably from 0 to 15 mass%, based on the total mass of the liquid crystal composition of the present invention. Preferably.

As the compound represented by the above formula (VII), specifically, the compounds exemplified below can be preferably used.

The liquid crystal composition of the present invention further preferably contains at least one compound represented by the following formula (M).

In the above formula (M), 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 - groups are independently represented as -CH=CH. -, -C≡C-, -O-, -CO-, -COO- or -OCO-substituted, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 are each independently represented as selected from the following composition group of the group: (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 group (d And the group (e) are 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 has a plurality of cases, They may be the same or different, PM is 2, 3 or 4 and C ^M2 has a plurality of cases, and they may be the same or different, and 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, , Trifluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl group; but excluding the compounds of formula (i) represents.

The type of the compound which can be combined is not particularly limited, and can be suitably combined in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 types. Furthermore, another embodiment of the present invention is three types. Further, another embodiment of the present invention is four types. Furthermore, another embodiment of the present invention is five types. Furthermore, another embodiment of the present invention is six types. Furthermore, another embodiment of the present invention is seven or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (M) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, The performance of the dielectric anisotropy or the like is appropriately adjusted.

The content of the compound represented by the above formula (M) is from 1 to 95% by mass based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 10 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 30 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 40 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 45 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 50 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 55 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 60 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 65 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 70 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 75 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 80 to 95% by mass.

In addition, the content of the compound represented by the above formula (M) is, for example, 1 to 85% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. In still another embodiment of the present invention, the content of the compound is from 1 to 75% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 65% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 55% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 45% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 25% by mass.

It is preferable to maintain the viscosity of the liquid crystal composition of the present invention at a low value and to require a liquid crystal composition having a fast reaction rate, and to lower the above lower limit and lower the upper limit. 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 having good temperature stability is required, it is preferable to lower the above lower limit and lower the upper limit. Further, in order to increase the dielectric anisotropy in order to maintain the driving voltage at a low value, it is preferable to increase the above lower limit value and increase the upper limit value.

When the ring structure in which R ^M1 is bonded is 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 are used. The number of 4 to 5 alkenyl groups is preferred, and the ring structure of the bond is cyclohexane, piperene 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 alkyl group having 2 to 5 carbon atoms The base is preferred.

When the compound represented by the formula (M) is required to satisfy the chemical stability of the liquid crystal composition, it is preferred that the compound does not have a chlorine atom in the molecule. Further, the content of the compound having a chlorine atom in the liquid crystal composition is preferably 0 to 5% by mass, preferably 0 to 3% by mass, and 0 to 1 by mass based on the total mass of the liquid crystal composition of the present invention. % is preferably, 0 to 0.5% by mass is preferred, and substantially no inclusion is preferred. The term "substantially not contained" means a compound which does not intentionally contain a chlorine atom, such as a compound which is formed as an impurity when the liquid crystal composition is mixed with the compound.

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

In the above formula (VIII), 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. Is a hydrogen atom or a fluorine atom, and Y ⁸ represents a fluorine atom or -OCF ₃ .

The kind of the compound which can be combined is not particularly limited, and the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence can be suitably combined and used. 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 types. Furthermore, another embodiment of the present invention is three or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (VIII) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, and The performance of the dielectric anisotropy or the like is appropriately adjusted.

The content of the compound represented by the above formula (VIII) is, for example, 2 to 40% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 4 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 5 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 14 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 21 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 23 to 40% by mass.

Further, the content of the above compound is, for example, 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. In still another embodiment of the present invention, the content of the compound is from 2 to 25% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 21% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 16% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 12% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 8% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 5% by mass.

It is preferable to maintain the viscosity of the liquid crystal composition of the present invention at a low value and to require a liquid crystal composition having a fast reaction rate, and to lower the above lower limit and lower the upper limit. 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 having good temperature stability is required, it is preferable to lower the above lower limit and lower the upper limit. Further, in order to increase the dielectric anisotropy in order to maintain the driving voltage at a low value, it is preferable to increase the above lower limit value and increase the upper limit value.

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

In the above formula (VIII-1), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 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.

Further, the compound represented by the above formula (VIII-1), specifically, at least one compound selected from the group consisting of compounds represented by formula (26.1) to formula (26.4) is preferred, and formula (26.1) And / or a compound represented by the formula (26.2) is preferable, and a compound represented by the formula (26.2) is more preferable.

The content of the compound represented by the above formula (26.1) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The following is preferable, and it is more preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and particularly preferably 1% by mass or more and 7% by mass or less. In a particularly preferable range, for example, 1% by mass or more and 6% by mass or less, 1% by mass or more and 5% by mass or less, 1% by mass or more and 3% by mass or less, 3% by mass or more and 7% by mass or less, and 3% by mass or more can be exemplified. Below mass%.

The content of the compound represented by the above formula (26.2) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The following is preferable, and it is more preferably 1% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 20% by mass or less, and particularly preferably 1% by mass or more and 18% by mass or less. In a particularly preferable range, for example, 1% by mass or more and 2% by mass or less, 3% by mass or more and 12% by mass or less, 4% by mass or more and 12% by mass or less, 4% by mass or more and 10% by mass or less, and 6% by mass or more and 12% by mass or less. 6% by mass or more and 9% by mass or less, 6% by mass or more and 8% by mass or less, 7% by mass or more and 12% by mass or less, 8% by mass or more and 11% by mass or less, 3% by mass or more and 7% by mass or less, and 5% by mass or less The above 10% by mass or less and 12% by mass or more and 18% by mass or less are preferable.

The total content of the compound represented by the above formula (26.1) and the compound represented by the above formula (26.2) is preferably 1 to 30% by mass, preferably 1 to 25 by mass based on the total mass of the liquid crystal composition of the present invention. % is more Good, 1~20% by mass is better. In a more preferable range, for example, 1% by mass or more and 18% by mass or less, 1% by mass or more and 14% by mass or less, 1% by mass or more and 10% by mass or less, 1% by mass or more and 9% by mass or less, and 1% by mass or more can be exemplified. 5% by mass or less, 1% by mass or more and 2% by mass or less, 5% by mass or more and 10% by mass or less, 6% by mass or more and 10% by mass or less, 6% by mass or more and 9% by mass or less, 6% by mass or more and 8% by mass or less, and 85% by mass or less and 85% by mass or less. The mass% or more is 12% by mass or less, 7 mass% or more and 12 mass% or less, 9 mass% or more and 14 mass% or less, and 12 mass% or more and 18 mass% or less.

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

In the above formula (VIII-2), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 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 types. Alternatively, still another embodiment of the present invention is three or more.

The content of the compound represented by the above formula (VIII-2) is considered to be 2.5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 25 mass% or less is preferable, and 8 mass% or more and 25 mass% or less are preferable, and 10 mass% or more and 20 mass% or less are preferable, and 12 mass% or more and 15 mass% or less are preferable.

Further, the compound represented by the formula (VIII-2) is preferably a compound selected from the group consisting of at least one compound represented by the formula (27.1) to the formula (27.4), and the compound represented by the formula (27.2) is preferred. good.

Alternatively, the compound represented by the above formula (VIII) is preferably a compound represented by the formula (VIII-3).

In the above formula (VIII-3), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 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.

Further, the compound represented by the above formula (VIII-3), specifically, at least one compound selected from the group consisting of compounds represented by formula (26.11) to formula (26.14) is preferred, and formula (26.11) is preferred. And / or the compound represented by the formula (26.12) is preferable, and the compound represented by the formula (26.12) is more preferable.

Alternatively, the compound represented by the above formula (VIII) is preferably a compound represented by the formula (VIII-4).

In the above formula (VIII-4), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (VIII-4) is appropriately adjusted in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (VIII-4) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 2 in another embodiment. ～5% by mass, in another embodiment, 3 to 20% by mass, and in still another embodiment, the content of the compound is 3 to 13% by mass, and in yet another embodiment, the content of the compound is 3 In still another embodiment, the content of the compound is from 1 to 5% by mass.

In addition, the compound represented by the formula (VIII-4) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the compound group represented by the formula (26.21) to the formula (26.24). Preferably, the compound represented by the formula (26.24) is more preferably contained.

Further, the compound represented by the above formula (M) is preferably, for example, at least one compound selected from the group consisting of compounds represented by the formula (IX). However, the compound represented by the above formula (i) is excluded.

In the above formula (IX), 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. Is 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 kind of the compound which can be combined is not particularly limited, and it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 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 types. Furthermore, another embodiment of the present invention is three types. Further, another embodiment of the present invention is four types. Furthermore, another embodiment of the present invention is five types. Furthermore, another embodiment of the present invention is six or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (IX) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The performance of the dielectric anisotropy or the like is appropriately adjusted.

The content of the compound represented by the above formula (IX) is, for example, 3 to 70% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 5 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 70% by mass. For example, another embodiment of the present invention In the embodiment, the content of the compound is from 24 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 28 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 30 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 34 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 39 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 40 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 42 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 45 to 70% by mass.

Further, the content of the above compound is, for example, 3 to 60% by mass based on the total mass of the liquid crystal composition of the present invention. In still another embodiment of the present invention, the content of the compound is from 3 to 55% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 50% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 45% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 40% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 30% by mass. In still another embodiment of the present invention, it is 25% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 20% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 15% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 10% by mass.

It is preferable to maintain the viscosity of the liquid crystal composition of the present invention at a low value and to require a liquid crystal composition having a fast reaction rate, and to lower the above lower limit and lower the upper limit. 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 required, it is preferable to lower the above-described lower limit and lower the upper limit. Further, in order to increase the dielectric anisotropy in order to maintain the driving voltage at a low value, it is preferable to increase the above lower limit value and increase the upper limit value.

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

In the above formula (IX-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁹² represents a hydrogen atom or A fluorine atom, Y ⁹ represents a fluorine atom or -OCF ₃ .

The kind of the compound which can be combined is not particularly limited, and it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 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 types. Furthermore, another embodiment of the present invention is three types. Further, another embodiment of the present invention is four or more.

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

In the above formula (IX-1-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. However, the compound represented by the above formula (i) is excluded.

The kind of the compound which can be combined is not particularly limited, and it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 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 types. Furthermore, another embodiment of the present invention is three or more.

The content of the compound represented by the above formula (IX-1-1) is appropriately adjusted depending on the embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-1-1) is, for example, 1 to 15% by mass based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 10% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 9% by mass. For example, another embodiment of the present invention In the embodiment, the content of the compound is from 1 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 3% by mass.

In addition, the content of the compound represented by the above formula (IX-1-1) is, for example, 2 to 10% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. In still another embodiment of the present invention, the content of the compound is from 3 to 10% by mass. In still another embodiment of the present invention, the content of the compound is from 5 to 10% by mass. In still another embodiment of the present invention, the content of the compound is from 6 to 10% by mass. In still another embodiment of the present invention, the content of the compound is from 7 to 10% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 8% by mass. In still another embodiment of the present invention, the content of the compound is from 5 to 8% by volume. In still another embodiment of the present invention, the content of the compound is from 6 to 9% by mass.

Further, the compound represented by the above formula (IX-1-1) is a compound selected from at least one of the compound groups represented by the formula (28.1), the formula (28.2), the formula (28.4), and the formula (28.5). Preferably, the compound represented by the formula (28.5) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (28.5) is 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 25 mass% or less is preferable, and 1 mass% or more and 20 mass% or less are more preferable, and 1 mass% or more and 15 mass% or less are more preferable, and 1 mass% or more and 10 mass% or less are especially preferable. In the above, 2% by mass or more and 10% by mass or less, 3% by mass or more and 10% by mass or less, 5% by mass or more and 10% by mass or less, 6% by mass or more and 10% by mass or less, 75% by mass or more and 10% by mass or less, and 1 or less. % by mass or more and 10% by mass or less, 1% by mass or more and 10% by mass or less, 1% by mass or more and 9% by mass or less, 1 The mass% or more is 8% by mass or less, 1% by mass or more and 3% by mass or less, 3% by mass or more and 8% by mass or less, 5% by mass or more and 8% by mass or less, and preferably 6% by mass or more and 9% by mass or less.

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

In the above formula (IX-1-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it is preferable to use one type to three types in combination of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and it is more preferable to combine one to four types.

The content of the compound represented by the above formula (IX-1-2) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 5% by mass or more and 30% by mass or less, preferably 8% by mass or more and 30% by mass or less, more preferably 10% by mass or more and 25% by mass or less, and most preferably 14% by mass or more and 22% by mass or less. Preferably, it is preferably 16% by mass or more and 20% by mass or less.

Further, the compound represented by the above formula (IX-1-2) is preferably a compound selected from at least one of the compound groups represented by the formula (29.1) to the formula (29.4), and the formula (29.2) and/or The compound represented by the formula (29.4) is preferred.

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

In the above formula (IX-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ⁹¹ and X ⁹² Independently represented by 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, and it is used in an appropriate combination in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one implementation of the present invention There are one type in the other, two in the other embodiment, three in the other embodiment, four in the other embodiment, and five in the other embodiment. One embodiment is a combination of six or more types.

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

In the above formula (IX-2-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it is preferable to combine 1 to 3 kinds in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (IX-2-1) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, in one embodiment of the present invention, the content of the compound represented by the above formula (IX-2-1) is from 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. In another embodiment, the content of the compound is from 2 to 40% by mass. In still another embodiment, the content of the compound is from 4 to 40% by mass. In still another embodiment, the content of the compound is from 10 to 40% by mass. In still another embodiment, the content of the compound is from 14 to 40% by mass. In still another embodiment, the content of the compound is from 16 to 40% by mass. In still another embodiment, the content of the compound is from 21 to 40% by mass.

In addition, for example, the content of the compound represented by the above formula (IX-2-1) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is still another one. The embodiment is 1 to 25% by mass, and in still another embodiment, it is 1 to 22% by mass, and still another embodiment is 1 to 20% by mass, and still another embodiment is 1 to 10% by mass. In still another embodiment, the amount is 1 to 7% by mass, and still another embodiment is 1 to 5% by mass.

Further, the compound represented by the formula (IX-2-1) is preferably a compound selected from the group consisting of at least one compound represented by the formula (30.1) to the formula (30.4), and the formula (30.1) and/or the formula. The compound represented by (30.2) is preferred.

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

In the above formula (IX-2-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound that can be combined is not limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine 1 to 3 kinds, and more preferably 1 to 4 types.

The content of the compound represented by the above formula (IX-2-2) can be appropriately adjusted in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (IX-2-2) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 1 to 25% by mass, and 1 to 20% by mass in still another embodiment, 1 to 15% by mass in still another embodiment, and 1 to 11% by mass in still another embodiment, and yet another The embodiment is 1 to 10% by mass, and in still another embodiment, it is 1 to 9% by mass, and in still another embodiment, it is 1 to 8% by mass, and in still another embodiment, it is 2 to 9% by mass. The other embodiment is 7 to 10% by mass, and in still another embodiment, it is 5 to 8% by mass, and in still another embodiment, it is 8 to 11% by mass.

Further, the compound represented by the formula (IX-2-2) is preferably a compound selected from the group consisting of at least one compound represented by the formula (31.1) to the formula (31.4), and is selected from the formula (31.2) to the formula. (31.4) A compound of at least one compound group represented by the formula (31.4) is preferred, and a compound represented by the formula (31.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (31.2) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or more. The mass% or less is preferably 1% by mass or more and 20% by mass or less, and preferably 1% by mass or more and 15% by mass or less. In the above, for example, 1% by mass or more and 14% by mass or less, 2% by mass or more and 9% by mass or less, 4% by mass or more and 10% by mass or less, 5% by mass or more and 8% by mass or less, and 85% by mass or more and 11% by mass or less. Preferably.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (31.4) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or more and 15% by mass or less. The mass% or less is preferably 1% by mass or more and 5% by mass or less, and preferably 2% by mass or more and 5% by mass or less.

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

In the above formula (IX-2-3), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it is preferable to combine one or two kinds in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-2-3) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is more preferable, and 3 mass% or more and 20 mass% or less are more preferable, and 6 mass% or more and 15 mass% or less are more preferable, and 8 mass% or more and 10 mass% or less are more preferable.

Further, the compound represented by the formula (IX-2-3) is preferably a compound selected from the group consisting of at least one compound represented by the formula (32.1) to the formula (32.4), and the formula (32.2) and/or the formula. The compound represented by (32.4) is preferred.

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

In the above formula (IX-2-4), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (IX-2-4) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is more preferable, and 3 mass% or more and 20 mass% or less are more preferable, and 6 mass% or more and 15 mass% or less are more preferable, and 8 mass% or more and 10 mass% or less are especially preferable.

Further, the compound represented by the formula (IX-2-4) is preferably a compound selected from the group consisting of at least one compound represented by the formula (33.1) to the formula (33.6), and the formula (33.1) and/or the formula. The compound represented by (33.3) is preferred.

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

In the above formula (IX-2-5), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and the solubility in low temperature, the transition temperature, the electrical reliability, the birefringence, and the like are considered, and they can be used in combination as appropriate in each embodiment. For example, one embodiment of the present invention is one type, and the other embodiment is two types, and in still another embodiment, three types, and still another embodiment is four or more types.

The content of the compound represented by the above formula (IX-2-5) can be appropriately adjusted in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (IX-2-5) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, 2 to 25% by mass, in another embodiment, 5 to 25% by mass, and in still another embodiment, 5 to 20% by mass, and in still another embodiment, 5 to 8% by mass, and yet another implementation The form is 8 to 20% by mass, and in still another embodiment, it is 1 to 10% by mass, and in still another embodiment, it is 1 to 4% by mass.

It is preferable to maintain the viscosity of the liquid crystal composition of the present invention at a low value and to require a liquid crystal composition having a fast reaction rate, and to lower the above lower limit and lower the upper limit. 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 required, it is preferable to lower the above-described lower limit and lower the upper limit. Further, in order to increase the dielectric anisotropy in order to maintain the driving voltage at a low value, it is preferable to increase the above lower limit value and increase the upper limit value.

Further, the compound represented by the formula (IX-2-5) is preferably a compound selected from the group consisting of at least one compound represented by the formula (34.1) to the formula (34.7), and the formula (34.1) and the formula (34.2). The compound represented by the formula (34.3) and/or the formula (34.5) is more preferably.

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

In the above formula (IX-3), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ⁹¹ and X ⁹² Independently represented by 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).

In the above formula (IX-3-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it is preferable to combine one or two kinds in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-3-1) is 3 mass% or more and 30 mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % The following is preferable, and 7 mass% or more and 30 mass% or less are preferable, and 13 mass% or more and 20 mass% or less are preferable, and 15 mass% or more and 18 mass% or less are preferable.

Further, the compound represented by the formula (IX-3-1) is preferably a compound selected from the group consisting of at least one compound represented by the formula (35.1) to the formula (35.4), and the formula (35.1) and/or the formula. The compound represented by (35.2) is preferred.

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

In the above formula (X), 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, or -OCF ₃ , and Q ¹⁰ represents a single bond or -CF ₂ O-, R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of A ¹⁰¹ and A ^{102 is} independently represented by a 1,4-cyclohexylene group. 1,4-phenylene or any one of the following formulas, but a hydrogen atom on the 1,4-phenylene group may be substituted by a fluorine atom.

The compound which can be combined is not particularly limited, and is suitably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is two types. Still another embodiment is three types. Still another embodiment is four types. Still another embodiment is five or more.

The content of the compound represented by the above formula (X) can be appropriately adjusted in each embodiment in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, the content of the compound represented by the above formula (X) is relative to the total mass of the liquid crystal composition of the present invention. The amount is 2 to 45% by mass in one embodiment of the present invention, 3 to 45% by mass in another embodiment, and 6 to 45% by mass in still another embodiment, and 8 to 4% in still another embodiment. 45% by mass, and another embodiment is 9 to 45% by mass, and in still another embodiment, 11 to 45% by mass, and still another embodiment is 12 to 45% by mass, and yet another embodiment is In another embodiment, the amount is from 18 to 45% by mass, and in still another embodiment, from 23 to 45% by mass, and in still another embodiment, the content is from 25 to 45% by mass.

Further, for example, the content of the compound represented by the above formula (X) is 2 to 35% by mass based on the total mass of the liquid crystal composition of the present invention, and 2 to 3% in another embodiment. 30% by mass, and yet another embodiment is 2 to 25% by mass, and yet another embodiment is 2 to 20% by mass, and yet another embodiment is 2 to 13% by mass, and yet another One embodiment is 2 to 9% by mass, and still another embodiment is 2 to 6% by mass, and still another embodiment is 2 to 3% by mass.

It is preferable to maintain the viscosity of the liquid crystal composition of the present invention at a low value, and it is necessary to have a liquid crystal composition having a fast reaction rate, and it is preferable to lower the above lower limit and lower the upper limit. Further, in the case where a liquid crystal composition which is difficult to cause image sticking is required, it is preferable to lower the above lower limit value and lower the upper limit value. Further, in order to increase the dielectric anisotropy in order to maintain the driving voltage at a low value, it is preferable to increase the above lower limit value and increase the upper limit value.

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

In the above formula (X-1), 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 a carbon atom. Number 1 to 4 alkoxy groups.

The compound which can be combined is not particularly limited, and is appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is two types. In still another embodiment, there are three types. In yet another embodiment, there are four types. In still another embodiment, five or more types are used.

The content of the compound represented by the above formula (X-1) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-1) is 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and is 3 in another embodiment. 40-40% by mass, and another embodiment is 5 to 40% by mass, and in still another embodiment, 6 to 40% by mass, and still another embodiment is 7 to 40% by mass, and yet another embodiment 8 to 40% by mass in another embodiment, 9 to 40% by mass in another embodiment, 13 to 40% by mass in still another embodiment, and 18 to 40% by mass in still another embodiment, yet another The embodiment is 23 to 40% by mass.

Further, for example, the content of the compound represented by the above formula (X-1) is 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 2 to 25% by mass, and still another embodiment is 2 to 20% by mass, and yet another embodiment is 2 to 15% by mass, and yet another embodiment is 2 to 10% by mass. Still another embodiment is 2 to 6 mass%, and yet another embodiment is 2 to 4 mass%.

Further, 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).

In the above formula (X-1-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and is suitably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is two types. In still another embodiment, there are three types. In still another embodiment, four or more types are used.

The content of the compound represented by the above formula (X-1-1) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-1-1) is 3 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 4 to 30% by mass, and another embodiment is 6 to 30% by mass, and in still another embodiment, 9 to 30% by mass, and still another embodiment is 12 to 30% by mass, and yet another The embodiment is 15 to 30% by mass, and in still another embodiment, it is 18 to 30% by mass, and in still another embodiment, it is 21 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (X-1-1) is 3 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is another The embodiment is 3 to 13% by mass, and in still another embodiment, it is 3 to 10% by mass, and in still another embodiment, it is 3 to 7% by mass.

In addition, the compound represented by the formula (X-1-1) used in the liquid crystal composition of the present invention is specifically selected from at least one compound group represented by the formula (36.1) to the formula (36.4). The compound is preferably a compound represented by the formula (36.1) and/or the formula (36.2).

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-1-2).

In the above formula (X-1-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (X-1-2) can be appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-1-2) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 1 to 15% by mass In still another embodiment, it is 1 to 10% by mass, and in still another embodiment, it is 1 to 6 mass%, and in still another embodiment, it is 1 to 4 mass%, and in still another embodiment, it is 1 to 3 mass%. quality%.

Further, for example, the content of the compound represented by the above formula (X-1-2) is 3 to 10% by mass based on the total mass of the liquid crystal composition of the present invention, and is another The embodiment is 4 to 10% by mass, and in still another embodiment, it is 6 to 10% by mass.

In addition, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention is specifically selected from at least one of the compound groups represented by the formula (37.1) to the formula (37.4). The compound is preferably a compound represented by the formula (37.2).

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

In the above formula (X-1-3), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-1-3) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-1-3) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. It is 1 to 15% by mass in another embodiment, and is 1 to 8% by mass in still another embodiment, and 1 to 8% by mass in still another embodiment, and 1 to 5% by mass in still another embodiment.

Further, for example, the content of the compound represented by the above formula (X-1-3) is 3 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is another The embodiment is 5 to 20% by mass, and in still another embodiment, it is 5 to 15% by mass.

In addition, the compound represented by the formula (X-1-3) used in the liquid crystal composition of the present invention is specifically selected from at least one of the compound groups represented by the formula (38.1) to the formula (38.4). A compound is preferred, and a compound represented by the formula (38.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (38.2) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or more and 15% by mass or less. The mass% or less is preferably 1% by mass or more and 10% by mass or less, preferably 1% by mass or more and 8% by mass or less, more preferably 3% by mass or more and 5% by mass or less, and preferably 4% by mass or more and 5% by mass or less. The following are preferred.

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

In the above formula (X-2), X ¹⁰² and 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. 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, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

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

In the above formula (X-2-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited. In view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like, one type or two or more types are preferable, and three or more types are preferably combined.

The content of the compound represented by the above formula (X-2-1) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 1% by mass or more and 16% by mass or less, preferably 1% by mass or more and 12% by mass or less, more preferably 1% by mass or more and 10% by mass or less. In the above, the compound represented by the above formula (X-2-1) The amount is preferably 1 to 5% by mass, more preferably 1 to 3% by mass, most preferably 5 to 10% by mass, and preferably 6 to 9% by mass, based on the total mass of the liquid crystal composition of the present invention. .

In addition, the compound represented by the above formula (X-2-1) used in the liquid crystal composition of the present invention is specifically at least 1 selected from the group consisting of compounds represented by the formulas (39.1) to (39.4). Preferred compounds are preferred, and a compound represented by the formula (39.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (39.2) is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or more and 16% by mass or less. The mass% or less is preferably 1% by mass or more and 12% by mass or less, and preferably 3% by mass or more and 10% by mass or less. In the above, the foregoing The content of the compound represented by the formula (39.2) is preferably from 1 to 5% by mass based on the total mass of the liquid crystal composition of the present invention, preferably from 1 to 3% by mass, and from 5 to 10% by mass. Preferably, 6 to 9 mass% 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).

In the above formula (X-2-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-2-2) is 3% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 6 mass% or more and 16 mass% or less are preferable, and 9 mass% or more and 12 mass% or less are preferable, and 9 mass% or more and 10 mass% or less are preferable.

In addition, the compound represented by the formula (X-2-2) used in the liquid crystal composition of the present invention is specifically selected from at least one compound group represented by the formula (40.1) to the formula (40.4). The compound is preferably a compound represented by the formula (40.2).

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

In the above formula (X-3), X ¹⁰² and 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 a carbon atom. Number 1 to 4 alkoxy groups.

The compound which can be combined is not particularly limited. In view of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like, one type or two or more types are preferable.

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

In the above formula (X-3-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-3-1) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-3-1) is 1 to 10% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. It is 1 to 8% by mass in another embodiment, and 1 to 6% by mass in still another embodiment, and 1 to 4% by mass in still another embodiment, and 1 to 2% by mass in still another embodiment.

In addition, the compound represented by the formula (X-3-1) used in the liquid crystal composition of the present invention is specifically selected from at least one compound group represented by the formula (41.1) to the formula (41.4). The compound is preferably a compound represented by the formula (41.2).

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

In the above formula (X-4), 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 alkyl group having 1 to 4 carbon atoms. Oxygen.

The compound to be combined is not particularly limited, and one or two or more kinds are preferably combined in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more.

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

In the above formula (X-4-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or two or more kinds are preferably combined in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more.

The content of the compound represented by the above formula (X-4-1) is appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

The content of the compound represented by the above formula (X-4-1) is preferably 2% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 5% by mass or more and 17% by mass or less. Preferably, it is preferably 10% by mass or more and 15% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

In addition, the compound represented by the formula (X-4-1) used in the liquid crystal composition of the present invention is specifically selected from at least one compound group represented by the formula (42.1) to the formula (42.4). The compound is preferably a compound represented by the formula (42.3), preferably a compound represented by the formula (42.3).

Further, the compound represented by the above formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-2).

In the above formula (X-4-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or two or more kinds are preferably combined in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more.

The content of the compound represented by the above formula (X-4-2), In view of the low temperature solubility, the transfer temperature, the electrical reliability, and the like, the total mass of the liquid crystal composition of the present invention is preferably 2% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less. 10% by mass or more and 15% by mass or less is preferable, and 10% by mass or more and 13% by mass or less is preferable.

Further, the compound represented by the above formula (X-4-2) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formulae (42.11) to (42.14). The compound is preferably a compound containing a compound represented by the formula (42.13) and/or the formula (42.14).

Or/or the compound represented by the above formula (X) used in the liquid crystal composition of the present invention is a compound represented by the formula (X-4-3) It is better.

In the above formula (X-4-3), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or two or more kinds are preferably combined in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more.

The content of the compound represented by the above formula (X-4-3) is 2% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. % or less is preferably 5% by mass or more and 17% by mass or less, preferably 10% by mass or more and 15% by mass or less, and preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the above formula (X-4-3) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formulae (42.21) to (42.24). A preferred compound is preferred, and a compound represented by the formula (42.22) is more preferred.

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

In the above formula (X-5), 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 alkyl group having 1 to 4 carbon atoms. Oxygen.

The compound to be combined is not particularly limited, and one or two or more kinds are preferably combined in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more.

Further, the compound represented by the above formula (X-5) is The compound represented by the formula (X-5-1) is preferred.

In the above formula (X-5-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or two or more kinds are preferably combined in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and more preferably three or more.

The compound represented by the above formula (X-5-1), specifically, at least one compound selected from the group consisting of compounds represented by formula (43.1) to formula (43.4) is preferred, wherein It is preferred to contain a compound represented by the formula (43.2).

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-6).

In the above formula (X-6), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-6) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-6) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~25% by mass, in another embodiment, 1 to 20% by mass, and in still another embodiment, 1 to 15% by mass, and in still another embodiment, 2 to 14% by mass, and yet another implementation The form is 2 to 12% by mass, and the other embodiment is 2 to 9% by mass, and in still another embodiment, 2 to 8% by mass, and still another embodiment is 2 to 6% by mass. Still another embodiment is 2 to 5% by mass, and still another embodiment is 3 to 14% by mass, and yet another embodiment is 5 to 14% by mass, and yet another embodiment is 7~14% by mass, and another implementation The form is 8 to 14% by mass, and in still another embodiment, it is 9 to 14% by mass, and in still another embodiment, it is 9 to 12% by mass, and in still another embodiment, it is 3 to 8% by mass. Still another embodiment is 3 to 6 mass%, and yet another embodiment is 4 to 7 mass%, and yet another embodiment is 4 to 5 mass%, and yet another embodiment is 5 to 8 mass%, and still another embodiment is 5 to 6 mass%, and yet another embodiment is 7 to 8 mass%, and yet another embodiment is 8 to 9 mass%.

Further, the compound represented by the above formula (X-6), specifically, at least one compound selected from the group consisting of compounds represented by formula (44.1) to formula (44.4) is preferred, and contains a formula ( Compounds represented by 44.1) and/or formula (44.2) are preferred.

Further, the liquid crystal compound of the present invention may contain a compound represented by the formula (X'-7) which is a compound represented by the above formula (M) and which is similar to the compound represented by the above formula (X).

In the above formula (X'-7), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X'-7) is appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X'-7) is 4 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 5 to 30% by mass, and another embodiment is 6 to 30% by mass, and in still another embodiment, 8 to 30% by mass, and still another embodiment is 9 to 30% by mass, and yet another implementation The form is 11 to 30% by mass, and the other embodiment is 14 to 30% by mass, and in still another embodiment, it is 18 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (X'-7) is in relation to the total mass of the liquid crystal composition of the present invention. In one embodiment, the content of the compound is 4 to 13% by mass, and in another embodiment, the content of the compound is 4 to 10% by mass. In another embodiment, the content of the compound is 4 to 7% by mass.

In addition, the compound represented by the formula (X'-7) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (44.11) to the formula (44.14). A compound is preferred, and a compound represented by the formula (44.13) is more preferred.

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-8).

In the above formula (X-8), 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, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-8) can be appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-8) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~20% by mass, in another embodiment, 1 to 15% by mass, and in still another embodiment, 1 to 10% by mass, and in still another embodiment, 1 to 5% by mass, and yet another implementation The form is 1 to 3 mass%.

Further, the compound represented by the above formula (X-8), specifically, at least one compound selected from the group consisting of compounds represented by formula (44.21) to formula (44.24) is preferred, and contains a formula ( The compound represented by 44.22) is preferred.

Alternatively, the compound represented by the above formula (X) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XI).

In the above formula (XI), X ¹¹¹ to X ¹¹⁷ are each independently represented by a fluorine atom or a hydrogen atom, at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms and a carbon atom. An alkenyl group of 2 to 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, and is considered to have low temperature solubility, transfer temperature, electrical reliability, birefringence, etc., for example, one embodiment of the present invention, and another embodiment 2 In another embodiment, it is preferred to combine three or more types.

The content of the compound represented by the above formula (XI) can be appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XI) is 2 to 30% by mass in one embodiment of the present invention, and 4 to 30 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. The mass % is 5 to 30% by mass in still another embodiment, 7 to 30% by mass in still another embodiment, and 9 to 30% by mass in still another embodiment, and 10 in still another embodiment. ~30% by mass, in another embodiment, 12 to 30% by mass, and in still another embodiment, 13 to 30% by mass, and in still another embodiment, 15 to 30% by mass, in yet another embodiment It is 18 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (XI) is 2 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and in still another embodiment, 2 to 20% by mass, and still another embodiment is 2 to 15% by mass, and still another embodiment is 2 to 10% by mass, and still another embodiment is 2 to 5% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small liquid crystal cell gap, it is suitable to increase the content of the compound represented by the above formula (XI). When it is used for a liquid crystal display element having a small driving voltage, it is suitable to increase the content of the compound represented by the above formula (XI). Further, in the case of a liquid crystal display device used in a low-temperature environment, it is suitable to reduce the content of the compound represented by the above formula (XI). For reaction In the case of a liquid crystal composition for a liquid crystal display element having a high speed, it is suitable to reduce the content of the compound represented by the above formula (XI).

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).

In the above formula (XI-1), R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type, and the other embodiment is two types, and in still another embodiment, three or more types are combined.

The content of the compound represented by the above formula (XI-1) is 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. It is more preferably 2% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 22% by mass or less. In the above, the content of the compound represented by the above formula (XI-1) is preferably 2 to 20% by mass, more preferably 2 to 12% by mass, based on the total mass of the liquid crystal composition of the present invention. 2 to 8 mass% is preferred, 2 to 5 mass% is preferred, 2 to 4 mass% is preferred, 4 to 22 mass% is preferred, and 5 to 22 mass% is preferred, and 10 to 22 mass% is preferred. Preferably, 14 to 22% by mass is preferred, and 20 to 22% by mass is preferred, 4 to 5 is preferred. The mass % is preferably, 5 to 8 mass% is preferred, 10 to 12 mass% is preferred, and 14 to 20 mass% is preferred.

In addition, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the compound group represented by the formula (45.1) to the formula (45.4). Preferably, a compound containing at least one selected from the group consisting of compounds represented by formula (45.2) to formula (45.4) is preferred, and a compound represented by formula (45.2) is more preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.2) is 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 25% by mass or less is preferable, 2% by mass or more and 20% by mass or less is more preferable, and 2% by mass or more and 15% by mass or less is more preferably 2 It is particularly preferable that the mass% or more is 11% by mass or less. In a particularly preferable range, for example, 2% by mass or more and 10% by mass or less, 2% by mass or more and 6% by mass or less, 2% by mass or more and 5% by mass or less, 2% by mass or more and 4% by mass or less, and 3% by mass or more can be exemplified. It is 5% by mass or less, 4% by mass or more and 11% by mass or less, and 4% by mass or more and 5% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.3) is 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is more preferable, and 1% by mass or more and 10% by mass or less is more preferably 2% by mass or more and 9% by mass or less. In a particularly preferable range, for example, 4% by mass or more and 9% by mass or less, 5% by mass or more and 9% by mass or less, 2% by mass or more and 8% by mass or less, 2% by mass or more and 7% by mass or less, and 2% by mass or more can be exemplified. It is 5% by mass or less, 4% by mass or more and 8% by mass or less, and 5% by mass or more and 7% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.4) is 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is more preferable, and 1% by mass or more and 10% by mass or less is more preferably 2% by mass or more and 10% by mass or less. In a particularly preferable range, for example, 4% by mass or more and 10% by mass or less, 5% by mass or more and 10% by mass or less, 2% by mass or more and 7% by mass or less, 2% by mass or more, 6% by mass or less, and 5% by mass or more can be exemplified. Below mass%.

Further, the compound represented by the above formula (XI) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XI-2).

In the above formula (XI-2), R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type, and the other embodiment is two types, and in still another embodiment, three or more types are combined.

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

In addition, the compound represented by the formula (XI-2) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the compound group represented by the formula (45.11) to the formula (45.14). Preferably, a compound containing at least one selected from the group consisting of compounds represented by formula (45.12) to formula (45.14) is preferred, and a compound represented by formula (45.12) is more preferred.

Alternatively, the compound represented by the above formula (X) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XII).

In the above formula (XII), X ¹²¹ to X ¹²⁶ are each independently represented by a fluorine atom or a hydrogen atom, and R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or 1 carbon atom. ~4 alkoxy, Y ¹² represents a fluorine atom or -OCF ₃ .

The compound that can be combined is not particularly limited, and the low temperature is considered. The solubility, the transfer temperature, the electrical reliability, the birefringence, and the like are preferably 1 to 3 or more, more preferably 1 to 4 or more.

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).

In the above formula (XII-1), R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferably one or two or more kinds in combination with the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, etc., and more preferably one or three or more.

The content of the compound represented by the above formula (XII-1) is from 1% by mass to 15% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is preferably 2% by mass or more and 10% by mass or less, more preferably 3% by mass or more and 8% by mass or less, and most preferably 4% by mass or more and 6% by mass or less.

In addition, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the compound group represented by the formula (46.1) to the formula (46.4). Preferably, a compound containing at least one selected from the group consisting of compounds represented by formula (46.2) to formula (46.4) is preferred.

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

In the above formula (XII-2), R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferable to use one type or two or more types in combination of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is more preferable to combine one to three or more.

The content of the compound represented by the above formula (XII-2), In view of the low temperature solubility, the transfer temperature, the electrical reliability, and the like, the total mass of the liquid crystal composition of the present invention is preferably 1% by mass or more and 20% by mass or less, more preferably 3% by mass or more and 20% by mass or less. 4% by mass or more and 17% by mass or less is preferable, and 6% by mass or more and 15% by mass or less is preferable, and 9% by mass or more and 13% by mass or less is preferable.

In addition, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the compound group represented by the formula (47.1) to the formula (47.4). Preferably, a compound containing at least one selected from the group consisting of compounds represented by formula (47.2) to formula (47.4) is preferred.

Alternatively, the compound represented by the above formula (M) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XIII).

In the above formula (XIII), X ¹³¹ to X ¹³⁵ are each independently represented by a fluorine atom or a hydrogen atom, and R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or 1 carbon atom. ~4 alkoxy, Y ¹³ represents a fluorine atom or -OCF ₃ .

The type of the compound which can be combined is not particularly limited, and one or two of these compounds are preferably contained, and more preferably 1 to 3, more preferably 1 to 4.

The content of the compound represented by the above formula (XIII) can be appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIII) is 2 to 30% by mass in one embodiment of the present invention, and 4 to 30 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. The mass % is 5 to 30% by mass in still another embodiment, 7 to 30% by mass in still another embodiment, and 9 to 30% by mass in still another embodiment, and 11 in still another embodiment. ~30% by mass, in another embodiment, 13 to 30% by mass, and in yet another embodiment, 14 to 30% by mass, and in still another embodiment, 16 to 30% by mass, in yet another embodiment It is 20 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (XIII) is relative to the total mass of the liquid crystal composition of the present invention, and the present invention In one embodiment, the content of the compound is 2 to 20% by mass, and in still another embodiment, the content of the compound is 2 to 15% by mass. In still another embodiment, the content of the compound is 2 to 10% by mass, and in still another embodiment, the content of the compound is 2 to 5% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small liquid crystal cell gap, it is suitable to increase the content of the compound represented by the above formula (XIII). In the case of driving a liquid crystal display element having a small voltage, it is suitable to increase the content of the compound represented by the above formula (XIII). Moreover, in the case of use for a liquid crystal display element used in a low-temperature environment, it is suitable to reduce the content of the compound represented by the above formula (XIII). In the case of a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable to reduce the content of the compound represented by the above formula (XIII).

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

In the above formula (XIII-1), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (XIII-1) is preferably contained in an amount of 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 3% by mass or more and 25% by mass or less. Preferably, it is preferably 5% by mass or more and 20% by mass or less, and more preferably 10% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (XIII-1) is preferably a compound selected from the group consisting of at least one compound represented by the formula (48.1) to the formula (48.4), and the compound represented by the formula (48.2) is preferred. good.

Alternatively, the compound represented by the above formula (XIII) is preferably a compound represented by the formula (XIII-2).

In the above formula (XIII-2), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and it is preferred to contain one or two or more of these compounds.

The compound represented by the above formula (XIII-2) is preferably contained in an amount of 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 1% by mass or more and 20% by mass or less. It is preferably 1% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 14% by mass or less. In the above, the compound represented by the above formula (XIII-2) is preferably contained in an amount of 3% by mass or more and 10% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 3% by mass or more and 6% by mass or less. The amount is preferably 6% by mass or more and 14% by mass or less, and more preferably 10% by mass or more and 14% by mass or less.

Further, the compound represented by the formula (XIII-2) is preferably a compound selected from the group consisting of at least one compound represented by the formula (49.1) to the formula (49.4), and the formula (49.1) and/or the formula (49.2). The compound represented is preferred.

Alternatively, the compound represented by the above formula (XIII) is preferably a compound represented by the formula (XIII-3).

In the above formula (XIII-3), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and it is preferred to contain 1 to 2 of these compounds.

The compound represented by the above formula (XIII-3) is preferably contained in an amount of 2% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 4% by mass or more and 20% by mass or less. It is preferably 9% by mass or more and 17% by mass or less, and more preferably 11% by mass or more and 14% by mass or less.

Further, the compound represented by the above formula (XIII-3) is preferably a compound selected from the group consisting of at least one compound represented by the formula (50.1) to the formula (50.4), and the formula (50.1) and/or the formula ( The compound represented by 50.2) is preferred.

Alternatively, the compound represented by the above formula (M) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XIV).

In the above formula (XIV), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and X ¹⁴¹ to X ¹⁴⁴ are each independently represented. Is a fluorine atom or a hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or OCF ₃ , and Q ¹⁴ represents a single bond, -COO- or -CF ₂ O-, and m ¹⁴ is 0 or 1.

The type of the compound that can be combined is not limited, and is appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Furthermore, another embodiment of the present invention is two types. Alternatively, still another embodiment of the present invention is three types. Further, still another embodiment of the present invention is four types. Alternatively, still another embodiment of the present invention is five types. Alternatively, still another embodiment of the present invention is six or more.

The content of the compound represented by the above formula (XIV) can be appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIV) is from 3 to 40% by mass in one embodiment of the present invention, and from 7 to 40 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. The mass % is 8 to 40% by mass in still another embodiment, 11 to 40% by mass in still another embodiment, and 12 to 40% by mass in still another embodiment, and 16 in still another embodiment. ~40% by mass, in another embodiment, 18 to 40% by mass, and in still another embodiment, 19 to 40% by mass, and in still another embodiment, 22 to 40% by mass, in yet another embodiment It is 25 to 40% by mass.

Further, for example, the content of the compound represented by the above formula (XIV) is from 3 to 35 mass% in one embodiment of the present invention with respect to the total mass of the liquid crystal composition of the present invention, and in yet another embodiment, 3 to 30% by mass, and still another embodiment is 3 to 25% by mass, and yet another embodiment is 3 to 20% by mass, and yet another embodiment is 3 to 15% by mass.

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

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

In the above formula (XIV-1), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and Y ¹⁴ represents a fluorine atom. Chlorine atom or -OCF ₃ .

The type of the compound which can be combined is not limited, and it is preferable to combine 1 to 3 kinds in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

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

In the above formula (XIV-1-1), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms.

The content of the compound represented by the above formula (XIV-1), It can be suitably adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (XIV-1) is 2% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is carried out in another embodiment. The form is 4% by mass or more and 30% by mass or less, and in still another embodiment, it is 7 mass% or more and 30 mass% or less, and in still another embodiment, it is 10 mass% or more and 30 mass% or less, and in still another embodiment, 18% by mass or more and 30% by mass or less.

In addition, for example, the content of the compound represented by the above formula (XIV-1) is 2% by mass or more and 27% by mass or less based on the total mass of the liquid crystal composition of the present invention. One embodiment is 2% by mass or more and 24% by mass or less, and in still another embodiment, it is 2% by mass or more and less than 21% by mass.

Further, the compound represented by the formula (XIV-1-1), specifically, at least one compound selected from the group consisting of the compounds represented by the formulae (51.1) to (51.4) is preferred, and the formula ( The compound represented by 51.1) is more preferred.

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

In the above formula (XIV-1-2), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms.

The content of the compound represented by the above formula (XIV-1-2) is 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 3 mass% or more and 13 mass% or less are preferable, and 5 mass% or more and 11 mass% or less are preferable, and 7 mass% or more and 9 mass% or less are preferable.

Further, the compound represented by the formula (XIV-1-2), specifically, at least one compound selected from the group consisting of the compounds represented by the formulae (52.1) to (52.4) is preferable, and the formula thereof is contained therein. The compound represented by (52.4) is preferred.

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

In the above formula (XIV-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ¹⁴¹ to X ¹⁴⁴ Independently represented by a fluorine atom or a hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ .

The type of the compound that can be combined is not limited, and is appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Furthermore, another embodiment of the present invention is two types. Alternatively, still another embodiment of the present invention is three types. Further, still another embodiment of the present invention is four types. Alternatively, still another embodiment of the present invention is five or more.

The content of the compound represented by the above formula (XIV-2) can be appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIV-2) is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and is 7 in another embodiment. 40-40% by mass, and another embodiment is 8 to 40% by mass, and in still another embodiment, 10 to 40% by mass, and still another embodiment is 11 to 40% by mass, and yet another embodiment 12 to 40% by mass in another embodiment, 18 to 40% by mass in another embodiment, 19 to 40% by mass in still another embodiment, and 21 to 40% by mass in yet another embodiment, yet another The embodiment is 22 to 40% by mass.

Further, for example, the content of the compound represented by the above formula (XIV-2) is from 3 to 35 mass% in one embodiment of the present invention with respect to the total mass of the liquid crystal composition of the present invention, and another embodiment It is 3 to 25% by mass, and yet another embodiment is 3 to 20% by mass, and yet another embodiment is 3 to 15% by mass, and yet another embodiment is 3 to 10% by mass.

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

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

In the above formula (XIV-2-1), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-1) is 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 3 mass% or more and 13 mass% or less are preferable, and 5 mass% or more and 11 mass% or less are preferable, and 7 mass% or more and 9 mass% or less are preferable.

Further, the compound represented by the formula (XIV-2-1), specifically, at least one compound selected from the group consisting of the compounds represented by the formulae (53.1) to (53.4) is preferable, and the formula thereof is contained therein. The compound represented by (53.4) is preferred.

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

In the above formula (XIV-2-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-2) is 3 mass% or more and 20 mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 6 mass% or more and 17 mass% or less are preferable, and 6 mass% or more and 15 mass% or less are preferable, and 6 mass% or more and 9 mass% or less are preferable.

Further, the compound represented by the formula (XIV-2-2), specifically, at least one compound selected from the group consisting of compounds represented by the formulae (54.1) to (54.4) is preferable, and the formula thereof is contained therein. The compound represented by (54.2) and/or formula (54.4) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (54.2) is preferably 5% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 5% by mass or more. The mass% or less is preferably 5% by mass or more and 22% by mass or less, preferably 6% by mass or more and 20% by mass or less, more preferably 6% by mass or more and 15% by mass or less, and particularly preferably 6% by mass or more and 9% by mass or less. The following are preferred.

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

In the above formula (XIV-2-3), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-3) is 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 9% by mass or more and 27% by mass or less is preferably 12% by mass or more and 24% by mass or less, and preferably 12% by mass or more and 20% by mass or less.

Further, the compound represented by the formula (XIV-2-3), specifically, at least one compound selected from the group consisting of compounds represented by the formulae (55.1) to (55.4) is preferable, and the formula thereof is contained therein. The compound represented by (55.2) and/or formula (55.4) is preferred.

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

In the above formula (XIV-2-4), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound that can be combined is not limited, and is appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Furthermore, another embodiment of the present invention is two types. Alternatively, still another embodiment of the present invention is three or more.

The content of the compound represented by the above formula (XIV-2-4) can be appropriately adjusted in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIV-2-4) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 1 to 15% by mass in another embodiment, 1 to 10% by mass in another embodiment, and 1 to 9% by mass in still another embodiment, and 1 to 3% by mass in still another embodiment, yet another The embodiment is 6 to 9 mass%.

When the liquid crystal composition of the present invention is used for driving a liquid crystal display element having a small voltage, the compound represented by the above formula (XIV-2-4) is added. The content of the substance is suitable. Further, in the case of using a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable to reduce the content of the compound represented by the above formula (XIV-2-4).

Further, the compound represented by the above formula (XIV-2-4), specifically, at least one compound selected from the group consisting of compounds represented by formula (56.1) to formula (56.4) is preferable, and contains A compound represented by the formula (56.1), the formula (56.2), and/or the formula (56.4) is preferred.

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

In the above formula (XIV-2-5), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-5) is 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 10% by mass or more and 22% by mass or less is preferable, and 13% by mass or more and 18% by mass or less is preferable, and 13% by mass or more and 15% by mass or less is preferable.

In addition, the compound represented by the above formula (XIV-2-5) is specifically a compound selected from at least one of the compound groups represented by the formula (57.1) to the formula (57.4). Among them, a compound represented by the formula (57.1) is preferred.

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

In the above formula (XIV-2-6), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-6) is considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The total mass of the liquid crystal composition of the invention is preferably 5% by mass or more and 25% by mass or less, more preferably 10% by mass or more and 22% by mass or less, more preferably 15% by mass or more and 20% by mass or less, and more preferably 15% by mass or more. 17% by mass or less is preferred.

Further, the compound represented by the above formula (XIV-2-6), specifically, at least one compound selected from the group consisting of compounds represented by formula (58.1) to formula (58.4) is preferred, and contains The compound represented by the formula (58.2) is preferred.

Alternatively, the compound represented by the above formula (XIV) is preferably a compound represented by the formula (XIV-3).

In the above formula (XIV-3), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 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.

The content of the compound represented by the above formula (XIV-3) is considered to be 2.5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 25 mass% or less is preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3% by mass or more and 10 mass% or less are preferable.

Further, the compound represented by the above formula (XIV-3), specifically, at least one compound selected from the group consisting of compounds represented by formula (61.1) to formula (61.4) is preferred, and formula (61.1) And / or a compound represented by the formula (61.2) is more preferable.

Alternatively, the compound represented by the above formula (M) is preferably a compound represented by the formula (XV).

In the above formula (XV), R ¹⁵⁰ 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 A ¹⁵¹ represents 1,4-extension. A cyclohexyl group or a 1,4-phenylene group, but the hydrogen atom on the aforementioned 1,4-phenylene group may be substituted with a fluorine atom.

The compound which can be combined is not particularly limited, and it can be suitably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is two types. In still another embodiment, there are three types. In yet another embodiment, there are four types. In still another embodiment, five or more types are used.

The content of the compound represented by the above formula (XV) can be appropriately adjusted in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, the content of the compound represented by the above formula (XV) is 0.5 to 30% by mass in one embodiment of the present invention, and 1 to 30 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. The mass % is 3 to 30% by mass in still another embodiment, 6 to 30% by mass in still another embodiment, and 9 to 30% by mass in still another embodiment, and 11 in still another embodiment. ~30% by mass, in another embodiment, 12 to 30% by mass, in yet another embodiment, 18 to 30% by mass, and yet another embodiment, 19 to 30% by mass, in yet another embodiment In another embodiment, the content is 23 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (XV) is 0.5 to 25% by mass in one embodiment of the present invention, and 0.5 in another embodiment, in relation to the total mass of the liquid crystal composition of the present invention. Further, in another embodiment, it is 0.5 to 13% by mass, and in still another embodiment, it is 0.5 to 9% by mass, and still another embodiment is 1 to 6% by mass.

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

In the above formula (XV-1), R ¹⁵⁰ 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, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XV-1) can be appropriately adjusted in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XV-1) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~20% by mass, in another embodiment, 1 to 10% by mass, and in still another embodiment, 3 to 10% by mass, and yet another embodiment, 4 to 7% by mass, and yet another embodiment It is 1 to 5 mass%, and in another embodiment, it is 5 to 10 mass%.

In addition, the compound represented by the formula (XV-1) used in the liquid crystal composition of the present invention, specifically, at least one compound selected from the group consisting of compounds represented by the formulas (59.1) to (59.4) is Preferably, the compound represented by the formula (59.2) is more preferably contained.

Alternatively, the compound represented by the above formula (XV) is preferably a compound represented by the formula (XV-2).

In the above formula (XV-2), R ¹⁵⁰ 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, and it is preferable to combine one or two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XV-2) can be appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XV-2) is considered to be 0.5 mass in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like. The amount is preferably 20% by mass or more, more preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 4% by mass or less.

In addition, the compound represented by the formula (XV-2) used in the liquid crystal composition of the present invention is specifically selected from at least one compound of the compound group represented by the formula (60.1) to the formula (60.4). Preferably, the compound represented by the formula (60.2) is more preferably contained.

The liquid crystal composition of the present invention is preferably a compound which does not contain a structure in which an oxygen atom having a peracid (-CO-OO-) structure or the like is bonded to each other.

In the case of the reliability of the liquid crystal composition and the long-term stability, the content of the compound having a carbonyl group is preferably 5% by mass or less based on the total mass of the composition, and more preferably 3% by mass or less. % below is better, and substantially none of them are optimal.

When the stability due to the UV irradiation is emphasized, the content of the chlorine atom-substituted compound is preferably 5% by mass or less based on the total mass of the composition, and more preferably 10% by mass or less, and more preferably 5% by mass or less. For better, it is not optimal for inclusion.

It is preferable to increase the content of the compound having a ring structure of all 6 members in the molecule, and the content of the compound having a ring structure of all 6 members in the molecule is preferably 80% by mass or more based on the total mass of the composition. It is more preferably 90% by mass or more, more preferably 95% by mass or more, and it is preferable that the liquid crystal composition is substantially composed only of a compound having a ring structure of 6 members in the molecule.

In order to suppress deterioration due to oxidation of the liquid crystal composition, it is preferred to reduce the content of the compound having a cyclohexene group as a ring structure, and the content of the compound having a cyclohexene group relative to the total mass of the above composition. The content is preferably 10% by mass or less, more preferably 5% by mass or less, and more preferably substantially no.

It is preferable to reduce the viscosity and the improvement of Tni, and to reduce the content of a compound having a hydrogen atom which can be substituted with a halogen of 2-methylbenzene-1,4-diyl, and the above-mentioned 2-A is contained in the molecule. The content of the benzene-1,4-diyl compound is preferably 10% by mass or less based on the total mass of the above-mentioned composition, more preferably 5% by mass or less, and substantially no content.

In the case where the compound contained in the composition of the first embodiment of the present invention has an alkenyl group as a side chain, when the alkenyl group is bonded to cyclohexane, the number of carbon atoms of the alkenyl group is preferably 2 to 5, When the alkenyl group is bonded to the benzene group, the number of carbon atoms of the alkenyl group is preferably 4 to 5, and the unsaturated bond of the alkenyl group is not directly bonded to benzene.

The liquid crystal display device of the present invention may contain a polymerizable compound in order to produce a liquid crystal display device such as a PS mode, a lateral electric field type PSA mode or a lateral electric field type PSVA mode. Polymerizable compound that can be used In the photopolymerizable monomer which is polymerized by an energy ray such as light, for example, a six-membered ring having a biphenyl derivative or a triphenyl derivative is a liquid crystal skeleton of a plurality of bonds. A polymerizable compound or the like. More specifically, a difunctional monomer represented by the formula (XX) is preferred.

In the above formula (XX), X ²⁰¹ and X ²⁰² are each independently represented by 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 any hydrogen atom. Replaced by a fluorine atom.

It is preferable that both of X ²⁰¹ and X ²⁰² represent a diacrylate derivative of a hydrogen atom and a dimethacrylate derivative each having a methyl group, and one of the compounds which represents a hydrogen atom and the other represents a methyl group is also preferred. . The polymerization rate of these compounds is the fastest in diacrylate derivatives, the slowest in dimethacrylate derivatives, and the middle of asymmetric compounds, and the preferred embodiment can be used depending on the application. Dimethacrylate derivatives are particularly preferred for PSA display elements.

Sp ²⁰¹ and Sp ²⁰² are each independently a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -, but in the PSA display element, at least one of the single bonds is preferred, and both represent The single bond compound or one of which is a single bond and the other is an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - is preferred. In this case, an alkyl group having 1 to 4 carbon atoms is preferred, and an s system 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. M ²⁰¹ represents a ring structure other than a single bond, and a linking group other than the Z ²⁰¹ single bond is preferable, and in the case where M ²⁰¹ is a single bond, a Z ²⁰¹ single bond is preferable.

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

In the above formula (XX), M ²⁰¹ represents a single bond, and the ring structure is formed by two rings, and it is preferably represented by the following formula (XXa-1) to formula (XXa-5). (XXa-1)~Formula (XXa-3) is more preferable, and the formula (XXa-1) is particularly preferable.

In the above formula (XXa-1) to formula (XXa-5), both ends are set to be bonded to Sp ²⁰¹ or Sp ²⁰² .

The polymerizable compound containing these skeletons can obtain a favorable alignment state most suitable for the PSA type liquid crystal display element due to the alignment restricting force after polymerization, and thus display unevenness is suppressed or does not occur at all.

In the above, as the polymerizable monomer, at least one compound selected from the group consisting of the compounds represented by the general formulae (XX-1) to (XX-4) is preferred, and The compound represented by XX-2) is more preferred.

In the above formula (XX-3) and formula (XX-4), 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, polymerization proceeds even if the polymerization initiator is not present, but a polymerization initiator may be contained in order to promote polymerization. The polymerization initiator may, for example, be a benzoin ether, a benzophenone, an acetophenone, a benzil ketal or a hydrazine. Acylphosphine oxides and the like.

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

In the above formula (Q), 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 can be directly Substituted by -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, M ^Q represents trans -1,4 is a cyclohexyl 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 can be -O- in such a manner that 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 20 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 -OCO- Or a branched alkyl group of -COO- is preferred, a linear alkyl group having 1 to 10 carbon atoms, a CH ₂ group having ₁ group substituted with a linear alkyl group of -OCO- or -COO-, a branch More preferably, an alkyl group, a branched alkoxy group, or a branched alkyl group in which one CH ₂ group is substituted with -OCO- or -COO- is preferred.

M ^Q represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, but a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferred.

The compound represented by the above formula (Q) is preferably a compound selected from the group consisting of at least one of the compounds represented by the following formulae (Qa) to (Qd), and the formula (Qc) and/or The compound represented by (Qd) is more preferred.

In the above formula, R ^Q1 is preferably a linear alkyl group or a branched alkyl group having 1 to 10 carbon atoms, and R ^Q2 is a linear alkyl group or a branched alkyl group having 1 to 20 carbon atoms. Preferably, R ^Q3 is a linear alkyl group having 1 to 8 carbon atoms, a branched alkyl group, a linear alkoxy group or a branched alkoxy group, and the L ^Q group has a carbon number of 1 to 8 A chain alkyl group or a branched chain alkyl group is preferred.

In the liquid crystal composition of the present invention, one or two kinds of compounds represented by the above formula (Q) are preferred, and one to five kinds are more preferably contained in an amount relative to the liquid crystal composition of the present invention. Total quality, It is preferably 0.001 to 1% by mass, more preferably 0.001 to 0.1% by mass, and most preferably 0.001 to 0.05% by mass.

<Liquid crystal display element>

The liquid crystal composition containing the polymerizable compound of the present invention is polymerized by ultraviolet irradiation to impart a liquid crystal alignment ability, and is used for controlling the amount of light transmitted by the birefringence of the liquid crystal composition. Liquid crystal display element. As for the liquid crystal display element, it can be used for ECB-LCD, VA-LCD, VA-IPS-LCD, FFS-LCD, AM-LCD (Active Matrix Liquid Crystal Display Element), TN (Nematic Liquid Crystal Display Element), STN -LCD (Super Twisted Nematic Liquid Crystal Display Element), OCB-LCD, and IPS-LCD (Plane Conversion Liquid Crystal Display Element), which is particularly useful for AM-LCDs, and can be used for transmissive or reflective liquid crystal display elements. .

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 the transparent electrode layer can be obtained, for example, by sputtering indium tin oxide (ITO) on a transparent substrate such as a glass plate.

For example, a color filter can be produced 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 harden. By performing this step for each of three colors of red, green, and blue, a pixel portion for a color filter can be formed. In addition, a TFT and a film may be disposed on the substrate. A pixel electrode of an active device such as a diode.

The substrate is opposed to each other 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. It is more preferable that 1.5 to 10 μm is used, and in the case of using a polarizing plate, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the thickness d of the liquid crystal cell in such a manner that the contrast is maximized. Further, in the case of two polarizing plates, the polarization axes of the respective polarizing plates can be adjusted to be adjusted in such a manner that the viewing angle or contrast is good. Further, a retardation 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 form 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 carried out by a usual vacuum injection method or ODF method. However, the vacuum injection method does not cause a drip mark, but there is a problem that the trace of the injection remains. The present invention can be preferably used for a display element manufactured by the ODF method. In the liquid crystal display element manufacturing step of the ODF method, a solvent such as a backplane or a frontplane can be used as a sealant such as an epoxy-based photothermal heat-curing property, and a dispenser can be used. It is depicted in a closed-circuit retaining shape in which a predetermined amount of the liquid crystal composition is dropped under degassing, and then the front plate and the back plate are joined, thereby manufacturing a liquid crystal display element. 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, since a moderate polymerization rate is desired in order to obtain a good alignment property of the liquid crystal, it is polymerized by irradiating an active energy ray such as ultraviolet rays or electron beams in a single, sequential or sequential manner. The method is preferred. In the case of using ultraviolet rays, a polarized light source or a non-polarized light source may be used. In the case where the liquid crystal composition containing the polymerizable compound is polymerized in a state of being sandwiched between the two substrates, at least the substrate on the irradiation surface side must be provided with appropriate transparency with respect to the active energy ray. Further, when a specific portion is polymerized by using a photomask during light irradiation, the alignment state of the unpolymerized portion may be changed by changing conditions such as an electric field, a magnetic field, or a temperature, and the active energy ray may be further irradiated. The means of aggregation. In particular, when ultraviolet light is applied, it is preferred to apply ultraviolet light 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 the temperature range in which the liquid crystal composition of the present invention maintains the liquid crystal state. The polymerization is preferably carried out at a temperature close to room temperature, i.e., at a temperature of typically 15 to 35 °C. As the lamp for generating 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 the ultraviolet ray in the wavelength region of the absorption wavelength region of the non-liquid crystal composition, and it is preferable to use the ultraviolet ray if 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 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 . It can also change the intensity when irradiating ultraviolet rays. 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 both high-speed reaction and display deterioration, and is particularly useful for active matrix drive liquid crystal display elements, and is applicable to VA mode, PSVA mode, PSA mode, IPS ( In-plane switching mode, VA-IPS mode, FFS (fringe field switching) mode, or liquid crystal display element for 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 liquid crystal display element is provided in which a TFT layer 102 and a pixel electrode 103 are provided on a first substrate 100, and a passivation film 104 and a first alignment are provided thereon. a backing plate of the film 105; a black matrix 202, a color filter 203, a flattening film (overcoat layer) 201, a transparent electrode 204, and a second alignment layer are provided on the second substrate 200. a film 205, a front plate facing the back plate; a sealing material disposed between the substrates 301; and a liquid crystal layer 303 in which a sealing region surrounded by the sealing material is sealed; and protrusions (columnar spacers) 302 and 304 are provided on a surface of the substrate adjacent to the sealing material 301.

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. Polyesters such as ethylene glycol; polyolefins such as polypropylene, polyethylene, polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyimine Indoleamine, polystyrene, polyacrylate, polymethyl methacrylate, polyether oxime, polyarylate compound, inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, etc. .

When a plastic substrate is used, a barrier film is preferably used. The function of the barrier film is to lower the moisture permeability of the plastic substrate and to improve the reliability of the electrical characteristics of the liquid crystal display element. The barrier film is not particularly limited as long as it has high transparency and low water vapor permeability. Generally, an inorganic material such as cerium oxide is used for vapor deposition or sputtering, and chemical vapor is used. A film formed by a deposition method (CVD method).

In the present invention, the same material may be used as the first substrate or the second substrate, and a dissimilar material may be used, 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, the flatness and heat resistance are provided. Purpose, good results can be obtained when combining a plastic substrate and a glass substrate.

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

The TFT substrate 102 and the pixel electrode 103 are provided on the first substrate 100 in 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 a nitride film (SiNx), an oxide film (SiOx), or the like is usually formed by a chemical vapor deposition (CVD) technique or 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. Since the alignment film has a possibility of suppressing the adhesion to the sealing material, the pattern is applied in the sealing region. 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 subjected to temporary drying to evaporate the solvent, and then baked to be cross-linked and hardened. Thereafter, the alignment process is performed in order to present the alignment function.

The alignment treatment is carried out by a usual rubbing method. By using a flat-grinding cloth made of a fiber such as ruthenium on the polymer film formed as described above, it rubs in one direction to produce a liquid crystal alignment ability.

Also, there are also those who use the optical alignment method. The photo-alignment method irradiates polarized light on an alignment film containing an organic material having photoreceptivity, thereby producing a method of alignment ability without causing damage to the substrate or dust due to the rubbing method. As an example of the organic material in the photo-alignment method, there is a material containing a dichroic dye. In the case of dichroic dyes, Molecular alignment induced or heterogeneous reaction (eg azophenyl), dimerization reaction (eg cassia thiol), photocrosslinking reaction (eg diphenyl) with Weigert effect due to photochromism A ketone group) or a photoreactive reaction (for example, a polyfluorenylene group) generates a photoreaction group (hereinafter, simply referred to as a photo-alignment group) which is a source of liquid crystal alignment ability. The coated alignment agent solution is irradiated with light having a slight deflection (polarized light) by evaporating the solvent by temporary drying, whereby an alignment film having an alignment ability in an arbitrary direction can be obtained.

On the other hand, 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 by, for example, 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 is uniformly dispersed is applied to form a black matrix 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, the photoresist dispersion liquid is applied and prebaked, and then exposed to light through a mask pattern, and then developed to pattern the colored layer. Thereafter, the photoresist layer is peeled off, and the colored layer is baked to complete the black matrix 202.

The color filter 203 is 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 such as red is uniformly dispersed is applied to the first 2 On the substrate 200, after bake hardening, a photoresist is applied thereon and pre-baked. After exposure to the photoresist through the mask pattern, development is performed to pattern. Thereafter, the photoresist layer is peeled off and baked again to complete the (red) color filter 203. The order of coloring is not particularly limited. Similarly, a green color filter 203 and a blue color filter 203 are formed.

The transparent electrode 204 is provided on the color filter 203 (the outer layer (201) is provided on the color filter 203 for the purpose of flattening the surface if necessary). The transparent electrode 204 is preferably one having a high light transmittance, and the smaller one is preferably a smaller one. 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 is provided on the transparent electrode 204.

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

The foregoing description of the back sheet and the front sheet used in the present invention is as described above, but 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 quadrangular shape, or the like, but a horizontal cross section is formed into a circle in consideration of a misaligned margin in the process. Shape or regular polygon is especially 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 an organic solvent or a liquid crystal which is not dissolved in the sealing material or the sealing material, but it is processed and reduced in weight. A resin (curable 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 method of gravure printing 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 in which a columnar spacer formed on a black matrix is used as a mask pattern.

A resin liquid for forming a columnar spacer (without a colorant) is applied onto 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 is peeled off, and the resin layer is baked to complete the columnar spacer (302, 304 in Fig. 1).

The position of the column spacers can be determined according to the mask pattern to determine the desired position. 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 to be placed on the black matrix so as not to lower the quality of the sealing region. The column spacers thus produced by the gravure printing method are referred to as column spacers or photo spacers.

The material of the spacer is a mixture of a negative-type water-soluble resin such as a PVA-carbazole photosensitive resin or a polyfunctional acrylic monomer, an acrylic copolymer, a triazole-based initiator, or the like. Or a square resin using a coloring agent dispersed in a polyimide resin law. 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 sealing region on the front plate, a sealing material (301 in FIG. 1) is applied to the surface adjacent to the sealing material of the backing plate.

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. Further, in order to control moisture permeability, elastic modulus, viscosity, and the like, a filler composed of an inorganic substance or an organic substance may be added. 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 preferably about 1/5 to 1/10 of the cell gap, and the length of the fibrous material is preferably 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 such a manner that the liquid crystal does not leak), the sealing material coating shape is formed into a closed circuit shape.

The closed shape of the front plate coated with the aforementioned sealing material The liquid crystal is dropped into the sealing area. A dispenser is usually used. The amount of liquid crystal dropped is substantially the same as the volume of the columnar spacer multiplied by the volume of the sealed coating area in order to coincide with 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 back sheet is bonded to the front sheet on which the sealing material is applied and the liquid crystal is dropped. 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 second alignment film of the front plate faces the first alignment film of the back plate. 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 inert gas is filled in the system, and the atmospheric pressure is gradually released while gradually releasing the pressure. At this time, the front plate and the back plate are bonded by atmospheric pressure, and a cell gap is formed at a height position of the column spacer. In this state, the sealing material is cured by irradiating ultraviolet rays to the sealing material to form a liquid crystal cell. Thereafter, a heating step is added as appropriate to promote hardening of the sealing material. In order to enhance the adhesion of the sealing material or to enhance the electrical reliability, 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. Further, "%" in the compositions 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 298K (alias: birefringence)

△ ε: dielectric anisotropy in 298K

η: viscosity in 293K (mPa‧s)

Rotational viscosity (mPa‧s) in γ1:298K

VHR: Voltage holding ratio (%) in 333K under the condition of frequency 60Hz and applied voltage of 5V

VHR after heat resistance test: The electrooptic property evaluation of the liquid crystal composition sample was held in a thermostat at 130 ° C for 1 hour, and then measured under the same conditions as the above-described VHR measurement method.

Afterimage: The residual image evaluation of the liquid crystal display device is performed after the specified fixed pattern is displayed in the display area for an arbitrary test time, and the residual image of the fixed pattern when the full screen is uniformly displayed is measured, and the residual image is unacceptable. Test time.

1) The test time therein indicates the display time of the fixed pattern, and the longer the time, the more the occurrence of the residual image is suppressed, indicating that the performance is high.

2) The degree of image sticking that cannot be tolerated refers to the degree to which the afterimage of the pass or fail is judged to be unacceptable.

Drip trace: The evaluation of the dripping trace of the liquid crystal display device was performed in the case of all black display, and the dripping trace which floated on white was visually observed by the following five-stage evaluation.

5: no traces of dripping (excellent)

4: Even if there are few traces of dripping, it is tolerable (good)

3: The degree of boundary with a small amount of drop marks, pass or fail judgment (optional under additional conditions)

2: There are traces of dripping, the degree of unacceptable (not available)

1: There are traces of dripping, quite poor (poor)

Process suitability: Process suitability is in the ODF process. Using a fixed-meter metering pump, add 50pL per drop and measure every 100 times of “0~100 times, 101~200 times, 201~300 times,...” The mass of each of the 100 drops of the liquid crystal at the time of the dropwise addition was evaluated by the number of drops of the size which could not be adapted to the ODF process.

The more the number of additions, the more likely it is to settle over a long period of time, and the process is highly suitable.

Solubility at low temperature: Evaluation of solubility at low temperature After modulating the liquid crystal composition, 1 g of the liquid crystal composition was weighed in a 2 mL sample vial and placed in a temperature-controlled test cell to have the following operating state "-20 ° C (hold 1 Hour)→temperature (0.1°C/min)→0°C (for 1 hour)→temperature (0.1°C/min)→20°C (for 1 hour)→cooling (-0.1°C/min)→0°C ( The temperature change was continuously maintained for one cycle, and the temperature change was continuously observed as one cycle, and the precipitation of the liquid crystal composition was visually observed, and the test time when the precipitate was observed was measured.

The longer the test time, the longer the liquid crystal phase can be maintained over a long period of time, and the solubility at low temperatures is good.

Volatilization/manufacturing device contamination: The volatility evaluation of the liquid crystal material was carried out by observing the operation state of the vacuum stirring defoaming mixer using a stroboscope and by visually foaming the liquid crystal material. Specifically, the capacity of the container for dedicated vacuum degassing stirred mixer of 2.0L of liquid crystal composition placed in 0.8kg, at 4kPa degassed, the revolution speed at 15S ^-1, rotation rate 7.5S ^-1 stirring operation vacuo The defoaming mixer was measured until the time of foaming started.

The longer the time until the start of foaming, the more difficult it is to volatilize, and the lower the possibility of contamination of the manufacturing apparatus, the higher the performance.

(Example 1)

The composition shown in Table 1 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 2.

(Comparative Example 1)

The composition shown in Table 1 which does not contain the compound represented by the above formula (i) was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 2.

The composition prepared in Example 1 was more stable in the ODF process than in the composition prepared in Comparative Example 1, and the solubility in low temperature was remarkably excellent. Further, in the liquid crystal display device produced in Example 1, the image sticking was suppressed as compared with the liquid crystal display device produced in Comparative Example 1.

(Example 2)

The composition shown in Table 3 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 4.

(Comparative Example 2)

The composition shown in Table 3 which does not contain the compound represented by the above formula (ii) was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 4.

[table 3]

The composition prepared in Example 2 was more stable than the composition prepared in Comparative Example 2 in the ODF process over a long period of time, and the solubility at low temperature was remarkably excellent. Further, in the liquid crystal display device produced in Example 2, the image sticking was suppressed as compared with the liquid crystal display device produced in Comparative Example 2.

(Examples 3 to 6)

The composition shown in Table 5 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 6.

(Comparative Example 3)

The composition shown in Table 5 which does not contain the compound represented by the above formula (i) was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 6.

[table 5]

(Examples 7 to 10)

The composition shown in Table 7 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 8.

(Comparative Example 4)

The composition shown in Table 7 which does not contain the compound represented by the above formula (ii) was prepared, and an IPS liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 8.

(Examples 11 to 14)

The composition shown in Table 9 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 10.

(Comparative Example 5)

The composition shown in Table 9 which does not contain the compound represented by the above formula (ii) was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 10.

(Examples 15 to 18)

The composition shown in Table 11 was prepared, and an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 12.

(Examples 19 to 22)

The composition shown in Table 13 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 14.

(Examples 23 to 26)

The composition shown in Table 15 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 16.

(Examples 27 to 30)

The composition shown in Table 17 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 18.

(Examples 31 to 34)

The composition shown in Table 19 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 20.

(Examples 35 to 38)

The composition shown in Table 21 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 22.

(Examples 39 to 42)

The composition shown in Table 23 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 24.

(Examples 43 to 46)

The composition shown in Table 25 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 26.

(Examples 47 to 50)

The composition shown in Table 27 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 28.

(Examples 51 to 54)

The composition shown in Table 29 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 30.

(Examples 55 to 58)

The composition shown in Table 31 was prepared, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 32.

The liquid crystal composition prepared in the above examples has low viscosity and good solubility at low temperatures. It is also a person who lacks volatility and can suppress device contamination. Further, in the ODF process, it is possible to suppress variations in the amount of dripping of the liquid crystal composition, and it is possible to produce a liquid crystal display device that has undergone long-term stability. Further, the liquid crystal display device produced in the examples is excellent in heat resistance and maintains stable display characteristics over a long period of time.

Using the liquid crystal composition described in Example 3, a VA-IPS device was produced in the same manner as described in Example 1 of WO2012/043387. Confirm that the fabricated components show excellent display characteristics.

In the liquid crystal composition of the third embodiment, the alignment film (SE-5300 manufactured by Nissan Chemical Industries, Ltd.) used in the element described in Example 1 of WO2012/043387 was replaced with a horizontally oriented alignment film (JSR shares). Other than AL-1051) Manufacture IPS components. Confirm that the fabricated components show excellent display characteristics.

[Industrial availability]

The liquid crystal composition having positive dielectric anisotropy of the present invention has good solubility at low temperature, and the specific resistance or voltage holding ratio is extremely small due to heat or light change, so that the product has high practicability, and the liquid crystal display element including the same can be achieved. High speed reaction. Further, in the liquid crystal display device manufacturing step, since the liquid crystal composition can be continuously dripped, it is possible to suppress the display failure due to the process, and it can be manufactured with high yield, which is very useful.

Claims (7)

A liquid crystal composition comprising a compound represented by the following formula (i) and a compound represented by the following formula (ii); The liquid crystal composition of claim 1, which contains 1% by mass or more and 30% by mass or less of the compound represented by the formula (i), and contains 2% by mass or more and 60% by mass or less or less based on the total amount of the liquid crystal composition. The compound represented by the formula (ii). The liquid crystal composition of claim 1, which further comprises at least one compound represented by the formula (L): In the formula, 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 at least two non-adjacent -CH ₂ - groups are independently capable of being -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 being selected from a group of the following constituent groups: (a) 1,4-cyclohexylene (one -CH ₂ - or at least two non-adjacent -CH ₂ - which may be substituted in this group may be substituted with -O-), and (b) 1,4-phenylene (one -CH= or at least two non-contiguous -CH= may be substituted as -N=), the above-mentioned base (a) and b) each 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, OL When there are a plurality of cases of 2 or 3 and L ^L2 , they may be the same or different, and OL is 2 or 3 and B ^L3 has a plurality of cases, and they may be the same or different, but the formula (ii) Except for the compounds indicated. The liquid crystal composition of claim 1, which further comprises at least one compound represented by the formula (M): In the formula, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two of -CH ₂ - which are not adjacent to each other may be independently -CH=CH-, -C≡ C-, -O-, -CO-, -COO- or -OCO-substituted, 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 a -CH ₂ - or at least two adjacent -CH ₂ - may be substituted with -O- or -S-), and (e) 1,4-phenylene (one -CH= or non-contiguous at least two -CH= may be substituted by -N=), and the above-mentioned base (d) and base (e) are independent Instead of being substituted by a cyano group, a fluorine atom or a chlorine atom, 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 has a plurality of cases, which may be the same or different When PM is 2, 3 or 4 and C ^M2 is plural, they may be the same or different. X ^M1 and X ^M3 are each independently represented by a hydrogen atom, a chlorine atom or a fluorine atom, and X ^M2 represents a hydrogen atom. Fluorine atom, chlorine atom, cyano group, trifluoromethyl group, Methoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl, except in compounds of the formula (i) represents. A liquid crystal display element using the liquid crystal composition of claim 1. The liquid crystal display element of claim 5 is displayed in an IPS mode, an OCB mode, an ECB mode, a VA mode, a VA-IPS mode, or an FFS mode. A liquid crystal display characterized by using the liquid crystal display element of claim 5 or 6.