TWI482846B - Liquid crystal composition, and liquid crystal display element using same - Google Patents

Description

Liquid crystal composition and liquid crystal display element using same

The present invention relates to a nematic liquid crystal composition which exhibits a positive dielectric constant anisotropy (??) as a liquid crystal display material, and a liquid crystal display element using the same.

The liquid crystal display element is represented by a timepiece or a computer, and is used in various measuring apparatuses, automobile panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertisement display boards, and the like. Examples of the liquid crystal display method include a TN (twisted nematic) type, an STN (super twisted nematic) type, a vertical alignment type using a TFT (thin film transistor), or an IPS (in-plane switching) type. The liquid crystal composition used in these liquid crystal display elements is required to exhibit stability in terms of moisture, air, heat, light, etc., and to display a liquid crystal phase in a wide temperature range as wide as possible around a room temperature. Low viscosity and low drive voltage. Further, in order to optimize the dielectric anisotropy (Δε) and/or the refractive index anisotropy (Δn) for each display element, the liquid crystal composition is composed of several types to several tens of types of compounds. Composition.

In a vertical alignment (VA) type display, a liquid crystal composition having a negative Δ ε is used, and in a horizontal alignment type display such as a TN type, an STN type, or an IPS (in-plane switching) type, a liquid crystal composition having a positive Δ ε is used. Further, it has been reported that when the voltage is not applied, the liquid crystal composition having a positive Δ ε is vertically aligned, and the driving mode is displayed by applying a lateral electric field, and the necessity of the liquid crystal composition having a positive Δ ε is further increased. On the other hand, in all driving methods, low voltage driving, high-speed reaction, and a wide operating temperature range are required. 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) is high. In addition, in order to set Δn×d of the product of Δn and the cell gap (d) to a predetermined value, it is necessary to adjust the Δn of the liquid crystal composition to the cell gap to be adjusted to an appropriate range. Further, when a liquid crystal display element is applied to a television or the like, a liquid crystal composition having a small rotational viscosity (γ ₁ ) is required because of high speed reactivity.

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

On the other hand, the use of the liquid crystal display element has been expanded, and the use method and manufacturing method have also been largely changed. In order to cope with such changes, it is required to optimize the characteristics other than the basic physical property values. 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 a display element having a size of 50 or more is also put into practical use. As the size of the substrate increases, the method of injecting the liquid crystal composition into the substrate also changes, and the conventional vacuum injection method becomes the mainstream of the injection method by the ODF (One Drop Fill) method. However, when the liquid crystal composition is dropped onto the substrate, the problem that the drop marks cause a decrease in display quality is revealed. Further, in the process of the liquid crystal display element of the ODF method, it is necessary to drip the optimum amount of liquid crystal in accordance with the size of the liquid crystal display element. When the deviation of the amount of dripping is larger than the optimum value, the balance of the refractive index or the driving electric field of the liquid crystal display element which is designed in advance may collapse, and display defects such as unevenness or poor contrast may occur. In particular, in a small-sized liquid crystal display element which is widely used in recent popular smart phones, since the optimum liquid crystal dropping amount is a small amount, it is difficult to control the offset from the optimum value within a certain range. Therefore, in order to maintain high liquid crystal display In the liquid crystal composition, for example, it is necessary to receive a drastic pressure change or a smear in the dripping device which occurs when the liquid crystal is dropped, and it is possible to continuously drip continuously for a long period of time.

In the liquid crystal composition used for the liquid crystal display device driven by the active matrix driven by the TFT element or the like, it is required to maintain the characteristics and performance required for the liquid crystal display element while maintaining high-speed reaction performance, etc., in addition to the high ratio that has been emphasized in the past. The development of a method of manufacturing a liquid crystal display element is also considered for the resistance value, the high voltage holding ratio, and the stability of the stimulus other than light or heat.

[Previous 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 Laid-Open Patent Publication No. 2010-275390

[Patent Document 4] Japanese Patent Publication No. 2011-052120

The problem to be solved by the present invention is to provide a liquid crystal phase having a wide temperature range, which is small in viscosity, good in solubility at low temperatures, high in specific resistance or voltage retention, stable in heat or light, and hard to cause image sticking (burn- In the case of poor display such as dropping or dropping, it is possible to produce a liquid crystal composition having a positive Δ ε of a liquid crystal display element having excellent display quality and a liquid crystal display element using the liquid crystal composition.

The present inventors reviewed various liquid crystal compounds and various chemical substances, and found that the above problems can be solved by combining specific liquid crystal compounds, and finally completed the present invention. That is, the first aspect of the present invention is the liquid crystal composition below, and the second aspect of the present invention is the liquid crystal element below.

[1] A liquid crystal composition containing one or more compounds represented by the following formula (i), and containing one or more compounds represented by the following formula (ii).

(wherein R ⁱ¹ , R ⁱ² and R ⁱⁱ¹ each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups may independently be used. Substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, the hydrogen atom in the alkyl group may be substituted by a fluorine atom or a chlorine atom, X ⁱ¹ , X ⁱ² , X ⁱ³ , X ⁱ⁴ , X ⁱⁱ¹ and X ⁱⁱ² each independently represent a hydrogen atom or a fluorine atom, and A ⁱⁱ¹ , A ⁱⁱ² and A ⁱⁱ³ each independently represent a trans-1,4-cyclohexyl group or a hydrogen atom. a 1,4-phenyl group substituted by a fluorine atom or a chlorine atom).

[2] The liquid crystal composition according to the above [1], wherein the X ⁱ² of the above formula (i) is a fluorine atom.

[3] The liquid crystal composition according to the above [1] or [2] wherein the A ⁱⁱ¹ of the above formula (ii) is a trans-1,4-cyclohexylene group.

[4] The liquid crystal composition according to any one of the above [1] to [3] wherein the A ⁱⁱ² and A ⁱⁱ³ hydrogen atoms of the above formula (ii) may be substituted by a fluorine atom, and 1,4-benzene is extended. base.

[5] The liquid crystal composition according to any one of [1] to [4] wherein the X ⁱⁱ¹ of the above formula (ii) is a fluorine atom.

[6] The liquid crystal composition according to any one of the above [1] to [5], which contains a compound represented by the following formula (L),

(wherein R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups in the alkyl group are independently Can be substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, OL means 0, 1, 2 or 3, B ^L1 , B ^L2 and B ^L3 Independently indicated as being selected from (a) 1,4-cyclohexylene (one -CH ₂ - or two or more non-contiguous -CH ₂ - may be substituted by -O-) and (b) a group in the group consisting of 1,4-phenylene (one -CH= or two or more non-contiguous -CH=substitutable -N=) in the group, the above group (a And one or two or more hydrogen atoms in the group (b) may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent 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 is plural, they may be the same or different, when OL is 2 or 3 and B ^L3 is plural , they may be the same or different).

The liquid crystal composition of any one of the following [1] to [6] which contains the compound represented by the following General formula (M),

(wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - groups may independently be -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 selected from (d) 1, 4 - a cyclohexyl group (one -CH ₂ - or two or more -CH ₂ - which are not adjacent in this group may be substituted by -O- or -S-) and (e) 1,4-phenylene a group in the group consisting of one -CH= or two or more non-contiguous -CH=substitutable -N=, in the above group (d), base (e) One or more hydrogen atoms may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent 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-, when PM is 2, 3 or 4 and K ^M1 When plural is present, they may be the same or different. When PM is 2, 3 or 4 and the C ^M2 complex is present, they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom or a chlorine atom. Or a fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyanogen a group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group; but a compound represented by the formula (i) and a formula ( Ii) except for the compounds shown).

[8] A liquid crystal display device using the liquid crystal composition according to any one of the above [1] to [7].

[9] A liquid crystal display device according to any one of the above [1] to [7], wherein the IPS mode, the OCB mode, the EB mode, the VA mode, the VA-IPS mode, or the FFS mode liquid crystal display device.

[10] A liquid crystal display using the liquid crystal display element according to the above [8] or [9].

The liquid crystal composition having positive dielectric anisotropy of the present invention has a lower viscosity than that of the film, and has good solubility at low temperatures, and the specific resistance or voltage holding ratio is changed by heat or light. Very small. Therefore, the liquid crystal composition of the present invention has high practicability (applicability) for a liquid crystal product, and a liquid crystal display element such as an IPS type or an FFS type using the liquid crystal composition can achieve a high-speed reaction. In addition, the liquid crystal composition of the present invention can stably exhibit its performance even after passing through the process of the liquid crystal display element, and it is possible to suppress display defects caused by the process, and it is possible to manufacture a liquid crystal display element with high yield, which is very useful.

100‧‧‧1st substrate

102‧‧‧TFT layer

103‧‧‧ pixel electrodes

104‧‧‧passivation film

105‧‧‧1st alignment film

200‧‧‧2nd substrate

201‧‧‧Flating film (covering layer)

202‧‧‧Black matrix

203‧‧‧Color filters

203a‧‧‧Red color filter

203b‧‧‧Green color filter

203c‧‧‧Blue 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 using a columnar spacer formed on a black matrix as a mask pattern.

[Formation of the Invention]

In addition, "%" in the following composition means "% by mass" unless otherwise specified.

The liquid crystal composition of the present invention contains one or more compounds represented by the following formula (i), and one or more compounds represented by the following formula (ii) are contained.

(wherein R ⁱ¹ , R ⁱ² and R ⁱⁱ¹ each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups may independently be used. Substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, the hydrogen atom in the alkyl group may be substituted by a fluorine atom or a chlorine atom, X ⁱ¹ , X ⁱ² , X ⁱ³ , X ⁱ⁴ , X ⁱⁱ¹ and X ⁱⁱ² each independently represent a hydrogen atom or a fluorine atom, and A ⁱⁱ¹ , A ⁱⁱ² and A ⁱⁱ³ each independently represent a trans-1,4-cyclohexyl group or a hydrogen atom. a 1,4-phenyl group substituted by a fluorine atom or a chlorine atom).

<Compound represented by the formula (i)>

In the above formula (i), X ^{i2 is} preferably a fluorine atom, and X ⁱ¹ , X ⁱ³ and X ^{i4 are} preferably a hydrogen atom.

In the above formula (i), R ⁱ¹ and R ⁱ² are each independently preferably a linear alkyl group having 1 to 8 carbon atoms or a linear alkenyl group having 2 to 8 carbon atoms, more preferably a carbon atom. a linear alkyl group of 2 to 5 or a linear alkenyl group having 2 to 5 carbon atoms, particularly preferably a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group or the like, particularly preferably Ethyl, propyl, butyl or pentyl,

(In the formula, the right end is bonded to the ring structure).

When the improvement of the reaction rate is emphasized, an alkenyl group is preferred, and when reliability such as a voltage holding ratio when a liquid crystal composition is obtained is considered, an alkyl group is preferred.

The compound represented by the above formula (i) is preferably a compound represented by the formula (i-1).

(wherein R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms).

The types of compounds that can be combined are not particularly limited, but The combination is performed in accordance with the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Furthermore, in still another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, it is six or more types. Among them, it is particularly preferable to have two types of embodiments.

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

(wherein 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 formula (i-1-1) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, and dielectric constant. The performance required by the opposite sex is appropriately adjusted.

The content of the compound represented by the above formula (i-1-1) is preferably from 1 to 40% by mass, more preferably from 2 to 30% by mass, particularly preferably 4, based on the total mass of the liquid crystal composition of the present invention. ~20% by mass, particularly preferably 8 to 16% by mass.

The compound represented by the formula (i-1-1) is preferably, for example, a compound represented by the formula (i-1-1.1) to the formula (i-1-1.9).

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, more preferably one to two, and particularly preferably two. Further, since the selected compound has a wide molecular weight distribution and is effective in solubility, for example, one of the compounds represented by the formulas (i-1-1.1) and (i-1-1.2) is preferably selected. One of the compounds represented by i-1-1.4) and (i-1-1.5), one of the compounds represented by the formula (i-1-1.6) and the formula (i-1-1.7), and the formula One of the compounds represented by (i-1-1.8) and (i-1-1.9) is suitably combined.

Among them, a combination of (i-1-1.1) and (i-1-1.6), a combination of (i-1-1.4) and (i-1-1.6), (i-1-1.1) and ((i-1-1.1)) Combination of i-1-1.3), (i-1-1.1) In combination with (i-1-1.4), it is more preferably a combination of (i-1-1.1) and (i-1-1.6), a combination of (i-1-1.1) and (i-1-1.3), Combination of (i-1-1.1) and (i-1-1.4).

In one embodiment of the present invention, the content of the compound represented by the formula (i-1-1.1) is preferably from 1 to 40% by mass, more preferably from 2 to 20, based on the total mass of the liquid crystal composition of the present invention. % by mass, particularly preferably 3 to 10% by mass.

In one embodiment of the present invention, the content of the compound represented by the formula (i-1-1.3) is preferably from 1 to 40% by mass, more preferably from 2 to 20, based on the total mass of the liquid crystal composition of the present invention. The mass% is particularly preferably 4 to 10% by mass, particularly preferably 5 to 9% by mass.

In one embodiment of the present invention, the content of the compound represented by the formula (i-1-1.4) is preferably 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 represented by the formula (i-1-1.4) is 2 to 20% by mass, and in still another embodiment, the content of the compound represented by the formula (i-1-1.4) is 5 to 10% by mass. .

In one embodiment of the present invention, the content of the compound represented by the formula (i-1-1.6) is preferably 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 represented by the formula (i-1-1.6) is 2 to 20% by mass, and in still another embodiment, the content of the compound represented by the formula (i-1-1.6) is 4 to 10% by mass. .

<Compound represented by the formula (ii)>

In the above formula (ii), R ^{ii1 is} preferably an alkyl group having 1 to 8 carbon atoms or a linear alkenyl group having 2 to 8 carbon atoms, more preferably a linear alkane having 2 to 5 carbon atoms. a linear or alkenyl group having 2 to 5 carbon atoms, particularly preferably an ethyl group, a propyl group, a butyl group, a pentyl group or the like

(wherein, the right end is bonded to the ring structure), and more preferably it is a propyl group.

In the above formula (ii), A ^{ii1 is} preferably a trans-1,4-cyclohexylene group.

Further, in the above formula (ii), A ⁱⁱ² and A ^{ii3 are} preferably a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom.

Further, in the above formula (ii), A ^{ii2 is} preferably a 1,4-phenylene group.

Further, in the above formula (ii), A ^{ii3 is} preferably a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom.

In the above formula (ii), X ^{ii1 is} preferably a fluorine atom.

The compound represented by the above formula (ii) is preferably a compound represented by the following formula (ii-1).

(In the formula, 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 formula (ii-1) is preferably from 1 to 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. More preferably, it is 2 to 16% by mass, and particularly preferably 2 to 13. In particular, when considering the improvement of precipitation at a low temperature, it is preferably from 3 to 10% by mass, more preferably from 4 to 8% by mass, even more preferably from 5 to 7% by mass.

Further, the general formula (ii-1) used in the liquid crystal composition of the present invention The compound shown is specifically preferably a compound represented by the formula (ii-1.1) to the formula (ii-1.4), and preferably a compound represented by the formula (ii-1.2) or the formula (ii-1.4).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-1.2) is preferably from 1 to 35 mass%, particularly preferably from 2 to 25 mass, based on the total mass of the liquid crystal composition of the present invention. %, particularly preferably 2 to 15% by mass, particularly preferably 2 to 10% by mass, particularly preferably 4 to 8% by mass.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-1.4) is preferably from 1 to 35 mass%, more preferably from 2 to 25 mass, based on the total mass of the liquid crystal composition of the present invention. %, especially preferably 2 to 15% by mass, and particularly preferably 3 to 8% by mass.

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

(In the formula, 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 preferably one type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (ii-2) is preferably from 1 to 10% 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. More preferably, it is 2 to 8 mass%, and particularly preferably 2 to 5 mass%.

Further, the compound represented by the formula (ii-2) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (ii-2.1) to the formula (ii-2.4), of which a preferred one is preferable. Contains a compound of the formula (ii-2.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-2.2) is preferably from 1 to 10% by mass, more preferably from 2 to 8% by mass based on the total mass of the liquid crystal composition of the present invention. %, particularly preferably 2 to 5% by mass.

Further, the compound represented by the above formula (ii) is preferably a compound represented by the following formula (ii-3).

(In the formula, 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 preferably one type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (ii-3) is preferably from 1 to 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. More preferably, it is 2 to 16% by mass, and particularly preferably 2 to 13.

Further, the compound represented by the formula (ii-3) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (ii-3.1) to the formula (ii-3.4), of which a preferred one is preferable. Contains a compound of the formula (ii-3.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-3.2) is preferably from 1 to 35 mass%, more preferably from 2 to 25 mass, based on the total mass of the liquid crystal composition of the present invention. %, especially preferably 2 to 15% by mass, particularly preferably 2 to 10% by mass.

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

(In the formula, 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 preferably one type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (ii-4) is preferably 3% 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. The mass% or less is more preferably 6% by mass or more and 16% by mass or less, and particularly preferably 9% by mass or more and 12% by mass or less, particularly preferably 9% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (ii-4) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (ii-4.1) to the formula (ii-4.4), of which a preferred one is preferable. Contains a compound of the formula (ii-4.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-4.2) is preferably from 1 to 10% by mass, more preferably from 2 to 8% by mass based on the total mass of the liquid crystal composition of the present invention. %, particularly preferably 2 to 5% by mass.

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

(In the formula, 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc. are considered. It is preferably one to two or more types, more preferably one to three or more types.

The content of the compound represented by the formula (ii-5) is preferably 3% 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. The mass% or less is more preferably 6% by mass or more and 16% by mass or less, and particularly preferably 9% by mass or more and 12% by mass or less, particularly preferably 9% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (ii-5) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (ii-5.1) to the formula (ii-5.4), of which a preferred one is preferable. Contains a compound of the formula (ii-5.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-5.2) is preferably 1% by mass or more and 35% by mass or less, more preferably 2% based on the total mass of the liquid crystal composition of the present invention. The mass% or more is 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, particularly preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass or less. Hereinafter, it is more preferably 4% by mass or more and 10% by mass or less.

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

(In the formula, 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 preferably one type to two or more types in combination in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (ii-6) is preferably a solubility at a low temperature, a transfer temperature, an electrical reliability, etc., and is preferably 3% by mass or more based on the total mass of the liquid crystal composition of the present invention. The mass% or less is more preferably 6% by mass or more and 16% by mass or less, and particularly preferably 9% by mass or more and 12% by mass or less, particularly preferably 9% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (ii-6) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (ii-6.1) to the formula (ii-6.4), of which a preferred one is preferable. Contains a compound of the formula (ii-6.2).

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

The combination is preferably (ii-1.2) alone, (ii-2.2) alone, (ii-3.2) alone, (ii-4.2) alone, (ii-1.2) and (ii-1.4), (ii-1.2). ) in combination with (ii-2.2), (ii-1.2) and (ii-4.2).

The content of the compound represented by the formula (ii) is preferably from 1 to 25% 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. Good for 2~20% by mass, especially good for 4~16.

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 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 13% by mass or more and 28% by mass or less, particularly preferably 16% by mass or more and 25% by mass or less, and more preferably 17% by mass or more and 24% by mass or less.

The compound represented by the formula (i) and the compound represented by the formula (ii) are preferably used in a total amount of 2 to 4, more preferably 3 or 4, and particularly preferably used. When three kinds of the compound represented by the formula (i) and the compound represented by the formula (ii) are used in combination, it is preferred to use two kinds of compounds represented by the formula (i) and one of the formula (ii). ) the compound shown. At this time, as shown in the general formula (i) The compound of the formula (i-1-1.1) and the formula (i-1-1.6), and the formula (i-1-1.1) and the formula (i-1-1.3) are preferably used. (i-1-1.1) and (i-1-1.4) are two kinds of compounds represented by the formula (ii), and one of the formula (ii-1.2) is preferably used.

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

(wherein R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups may independently be -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 consisting of (a) 1,4- cyclohexylene (this group present in a -CH ₂ - or of two or more adjacent -CH ₂ - may be replaced by -O-) and (b) 1,4- a group in a group consisting of a phenyl group (one -CH= or a non-contiguous two or more -CH=substitutable -N=) in the group, the above-mentioned group (a), group ( At least one of the hydrogen atoms in b) may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent 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 is plural, they may be the same or different, and when OL is 2 or 3 and B ^L3 is plural, they may be the same or different ; except for the compound of the formula (i)).

The type of the compound which can be combined is not particularly limited, but 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still another embodiment of the present invention, there are three types. Furthermore, in still another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, there are six types. Furthermore, in another embodiment of the present invention, there are seven types. Furthermore, in still another embodiment of the present invention, there are eight types. Furthermore, in another embodiment of the present invention, there are nine types. Furthermore, in another embodiment of the present invention, it is 10 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (L) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The required performance such as dielectric anisotropy is suitably adjusted.

The content of the above compound is, for example, 1 to 95% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Alternatively, in another embodiment of the present invention, the content is 10 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 95% by mass. Furthermore, in still 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. Furthermore, in another embodiment of the present invention, the content is 50 to 95% by mass. Moreover, in the present invention In still another embodiment, the content is 55 to 95% by mass. Furthermore, in still another embodiment of the present invention, the content is 60 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 65 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 70 to 95% by mass. Furthermore, in still another embodiment of the present invention, the content is 75 to 95% by mass. Furthermore, in still another embodiment of the present invention, the content is 80 to 95% by mass.

In addition, the content of the above compound is, for example, 1 to 95% 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 85%. Furthermore, in still another embodiment of the present invention, the content is 1 to 75%. Furthermore, in still another embodiment of the present invention, the content is 1 to 65%. Furthermore, in another embodiment of the present invention, the content is 1 to 55%. Furthermore, in another embodiment of the present invention, the content is 1% to 45%. Furthermore, in still another embodiment of the present invention, the content is 1 to 35%. Furthermore, in still 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 above lower limit value is high and the upper limit value is high. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the lower limit value is higher and the upper limit value is higher. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to lower the above-described lower limit value and the upper limit value is lower.

R ^L1 and R ^L2 , when the ring structure to which the bond is bonded is a phenyl group (aromatic), it is preferably a linear alkyl group having 1 to 5 carbon atoms, and a linear carbon number of 1 to 4 (or more) alkoxy groups and alkenyl groups having 4 to 5 carbon atoms, wherein the ring structure to which they are bonded is cyclohexane, meme and In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 (or more) carbon atoms, and a linear carbon are preferable. An alkenyl group having 2 to 5 atoms.

When the chemical stability of the liquid crystal composition is required, the compound represented by the formula (L) preferably has no chlorine atom in its molecule.

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

R ¹¹ -A ¹¹ -A ¹² -R ¹² (I)

(wherein 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 each of A ¹¹ and A ¹² Independently, 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4-phenylene).

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still another embodiment of the present invention, there are three types. Furthermore, in still another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, it is 5 or more types. Furthermore, in another embodiment of the present invention, it is six or more types.

In the liquid crystal composition of the present invention, the compound represented by the formula (I) The content of the substance must be appropriately adjusted in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, and dielectric anisotropy.

The content of the above compound 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. Alternatively, in another embodiment of the present invention, the content is 15 to 75% by mass. Further, in still another embodiment of the present invention, the content is 18 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 29 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 42 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 47 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 53 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 56 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 60 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 65 to 75% by mass.

In addition, the content 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. Further, in another embodiment of the present invention, the content is 3 to 65% by mass. Furthermore, in another embodiment of the present invention, the content is from 3 to 55% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 45% by mass. Furthermore, in another embodiment of the present invention In the above, the content is from 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 3 to 35% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 30% by mass.

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 above lower limit value is high and the upper limit value is high. In addition, when the Tni of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the above lower limit is moderate and the upper limit is moderate. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to lower the above-described lower limit value and the upper limit value is lower.

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

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

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still another embodiment of the present invention, there are three types. Furthermore, in still another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, it is five or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, and residue. The required performance such as shadow, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound is, for example, in one embodiment of the present invention, the content of the compound is from 3 to 70% by mass based on the total mass of the liquid crystal composition of the present invention. Alternatively, in another embodiment of the present invention, the content is 15 to 70% by mass. Further, in still another embodiment of the present invention, the content is from 18 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 25 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 29 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 31 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 35 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 43 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 47 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 50 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 53 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 56 to 70% by mass.

The content of the compound is, for example, in one embodiment of the present invention, the content of the compound is from 3 to 70% 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 3 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 45% by mass. Furthermore, in the other aspect of the invention In the embodiment, the content is 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 3 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 26% by mass.

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 above lower limit value is high and the upper limit value is high. In addition, when the Tni of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the above lower limit is moderate and the upper limit is moderate. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to lower the above-described lower limit value and the upper limit value is lower.

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

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-1) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, and dripping traces. The performance required for image retention, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound is, for example, 2 to 60 in one embodiment of the present invention, relative to the total mass of the liquid crystal composition of the present invention. the amount%. Alternatively, in another embodiment of the present invention, the content is 4 to 60% by mass. Further, in still another embodiment of the present invention, the content is 7 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 11 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 17 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 32 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 35 to 60% by mass.

The content of the above compound is, for example, 2 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. Further, in another embodiment of the present invention, the content is 2 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 2 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 20% by mass. Furthermore, in still another embodiment of the present invention, the content is 2 to 15% by mass.

Further, the compound represented by the formula (I-1-1) is preferably a compound selected from the group of compounds represented by the formula (1.1) to the formula (1.3), more preferably The compound represented by the formula (1.2) or the formula (1.3) is particularly preferably a compound represented by the formula (1.3).

When the compound represented by the formula (1.2) or the formula (1.3) is used alone, the content of the compound represented by the formula (1.2) is slightly higher, which is effective for the improvement of the reaction rate, and the content of the compound represented by the formula (1.3). The range shown below is preferable because a liquid crystal composition having a high reaction speed and high electrical and optical reliability can be formed.

The compound represented by the formula (1.3) is preferably contained in an amount of 3 to 35% by mass based on the total mass of the liquid crystal composition of the present invention, more preferably 4 to 25% by mass, particularly preferably 4 to 20% by mass or less. The content of the above compound is, for example, 4 to 6% by mass in one embodiment of the present invention, 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 7 to 9% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 18% by mass.

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

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

The type of the compound which can be combined is not particularly limited, but 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still another embodiment of the present invention, there are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-2) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, and dripping traces. The performance required for image retention, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound is, for example, 7 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. Alternatively, in another embodiment of the present invention, the content is 15 to 60% by mass. Further, in still another embodiment of the present invention, the content is from 18 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 21 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 24 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 27 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 30 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 34 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 37 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 41 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 47 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 50 to 60% by mass.

In addition, the content of the compound is, for example, 7 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. Furthermore, in another embodiment of the present invention, the content is 7 to 55% by mass. Furthermore, in another embodiment of the present invention, the content is 7 to 45% by mass. Furthermore, in still another embodiment of the present invention, the content is 7 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 7 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 7 to 30% by mass. Furthermore, in still another embodiment of the present invention, the content is 7 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content is 7 to 20% by mass.

Further, the compound represented by the formula (I-1-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (2.1) to (2.4), more preferably a formula (2.2) to a formula (2.4). ) the compound shown. In particular, the compound represented by the formula (2.2) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention. Further, when the Tni which is required to be high is more preferable than the reaction rate, it is preferred to use a compound represented by the formula (2.3) or the formula (2.4). The content of the compound represented by the formula (2.3) and the formula (2.4) is preferably 20% 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 (2.2) is preferably 5% by mass or more and 55% by mass or less based on the total mass of the liquid crystal composition of the present invention. More preferably, the content is 7% by mass or more and 47% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.2) is preferably from 5 to 55% by mass, more preferably from 15 to 50% by mass, based on the total mass of the liquid crystal composition of the present invention. It is preferably 25 to 48% by mass, more preferably 35 to 48% by mass, and particularly preferably 40 to 48% by mass.

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 formula (2.5) in accordance with the properties required for solubility at a low temperature, transfer temperature, electrical reliability, birefringence, etc., with respect to the total mass of the liquid crystal composition of the present invention. In particular, it is preferable to contain 11% by mass or more of the compound, more preferably 15% by mass, more preferably 23% by mass, still more preferably 26% by mass or more, and particularly preferably 28% by mass or more.

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

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

The kind of the compound which can be combined is not particularly limited, but is combined according to the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still another embodiment of the present invention, there are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-2) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, and residue. The required performance such as shadow, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound is, for example, 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. Alternatively, in another embodiment of the present invention, the content is 4 to 60% by mass. Further, in still another embodiment of the present invention, the content is 15 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 25 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 38 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 42 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 45 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 47 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 50 to 60% by mass.

In addition, the content of the above compound is, for example, 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. Furthermore, in another embodiment of the present invention, the content is from 3 to 55% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 45% by mass. Furthermore, in still another embodiment of the present invention, the content is from 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 15% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 5% by mass.

Further, the compound represented by the formula (I-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (3.1) to (3.4), more preferably a formula (3.1), a formula (3.3) or A compound represented by the formula (3.4). 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, when the Tni which is required to be high is more preferable than the reaction rate, it is preferred to use a compound represented by the formula (3.3) or the formula (3.4). The content of the compound represented by the formula (3.3) and the formula (3.4) is preferably 20% or more in order to improve the solubility at a low temperature.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (3.3) is preferably 2% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention. More preferably, the content is 3% by mass or more and 40% by mass or less, 4% by mass or more and 40% by mass or less, or 3% by mass or more and 5% by mass or less, 3% by mass or more and 10% by mass or less, and 3% by mass or more. 12% by mass or less, 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, and 3% by mass or more and 26% by mass or less. 3% by mass or more and 30% by mass or less, 3% by mass or more and 34% by mass or less, and 3% by mass or more and 37% by mass or less.

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

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

The kind of the compound which can be combined is not particularly limited, but is combined according to the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Moreover, in another embodiment of the present invention There are 3 types in the state.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-3) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. The required performance such as shadow, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound is, for example, 3% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Alternatively, in another embodiment of the present invention, the content is 4 to 60% by mass. Further, in still another embodiment of the present invention, the content is 15 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 25 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 38 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 42 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 45 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 47 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 50 to 60% by mass.

In addition, the content of the compound is, for example, in one embodiment of the present invention, the content of the compound is from 3 to 60% 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 3 to 55% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 45% by mass. Moreover, in still another aspect of the present invention In the embodiment, the content is 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 15% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 5% by mass.

When the solubility at a low temperature is emphasized, the effect is high if the content is set slightly, and conversely, when the reaction rate is emphasized, the effect is high if the content is set slightly. Further, in order to improve the characteristics of the drop or the residual image, it is preferred to set the range of the content in the middle.

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

The content of the compound represented by the formula (4.3) is preferably 2% by mass or more and 30% by mass or less, more preferably 4% 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 particularly preferably 6% by mass or more and 30% by mass or less, particularly preferably 8% by mass or more and 30% by mass or less, more preferably 10% by mass or more and 30% by mass or less, still more preferably 12% by mass or more and 30% by mass or less, and more preferably 14% by mass or more and 30% by mass or less, more preferably 16% by mass or more and 30% by mass or less, still more preferably 18% by mass or more and 25 mass% The amount is preferably 8% 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.

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

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

The kind of the compound which can be combined is not particularly limited, but is combined according to the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-4) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. The required performance such as shadow, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound is, for example, 3 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. Alternatively, in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in still another embodiment of the present invention, the content is 6 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 8 to 50% by mass. Moreover, in another embodiment of the present invention In the state, the content is 10 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 15 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the compound is, for example, in one aspect of the present invention, the content of the compound is from 3 to 50% 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 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 3 to 35% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 10% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 5% by mass.

When a high birefringence is obtained, the effect is high if the content is set slightly, and conversely, when the Tni is high, the effect is high if the content is set slightly. Further, in order to improve the characteristics of the drop or the residual image, it is preferred to set the range of the content in the middle.

Further, the compound represented by the formula (I-4) is preferably of the formula (5.1) The compound selected from the group of compounds represented by formula (5.4) is more preferably a compound represented by formula (5.2) to formula (5.4).

The content of the compound represented by the formula (5.2) is preferably from 2 to 30% by mass, more preferably from 4 to 20% by mass, even more preferably from 6 to 15% by mass, based on the total mass of the liquid crystal composition of the present invention. Particularly good is 8 to 12% by mass.

The content of the compound represented by the formula (5.4) is preferably from 2 to 30% by mass, more preferably from 4 to 20% by mass, even more preferably from 6 to 15% by mass, based on the total mass of the liquid crystal composition of the present invention. Particularly good is 8 to 12% by mass.

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

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

The kind of the compound which can be combined is not particularly limited, but is combined according to the required 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 in one embodiment of the present invention. Or, in the present invention In another embodiment, there are two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-5) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. The required performance such as shadow, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound is, for example, 1 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. Alternatively, in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in still another embodiment of the present invention, the content is 8 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 11 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 17 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 50% by mass. Furthermore, in yet another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the above compound is, for example, 1 to 50% in one embodiment of the present invention, 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% to 40%. Furthermore, in still another embodiment of the present invention, the content is 1 to 35%. Furthermore, in still another embodiment of the present invention, the foregoing The amount is 1~30%. Furthermore, in another embodiment of the present invention, the content is 1% to 20%. Furthermore, in another embodiment of the present invention, the content is 1% to 15%. Furthermore, in still another embodiment of the present invention, the content is 1% to 10%. Furthermore, in still another embodiment of the present invention, the content is 1 to 5%.

When the solubility at a low temperature is emphasized, the effect is high if the content is set slightly, and conversely, when the reaction rate is emphasized, the effect is high if the content is set slightly. Further, in order to improve the characteristics of the drop or the residual image, it is preferred to set the range of the content in the middle.

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

For example, the content of the compound represented by the formula (6.3) is preferably 2% by mass or more and 30% by mass or less, more preferably 4% by mass or more and 30% by mass or less, based on the total mass of the liquid crystal composition of the present invention. It is 5 mass% or more and 30 mass% or less, and particularly preferably 6 mass% or more and 30 mass% or less. More preferably, it is 9% by mass or more and 30% by mass or less, and particularly preferably 10% by mass or more and 30% by mass or less.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (6.7) to the formula (6.8).

It is preferred to adjust the content of the compound represented by the formula (6.7) to the formula (6.8) in accordance with the properties required for solubility at a low temperature, transfer temperature, electrical reliability, birefringence, etc., with respect to the liquid crystal composition of the present invention. The total mass of the material is preferably 2% by mass or more, more preferably 3% by mass or more, particularly preferably 4% by mass or more, more preferably 5% by mass or more, and particularly preferably 7% by mass or more. .

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

(wherein R ¹¹ and R ¹² 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; and each of X ¹¹ and X ¹² The fluorine atom or the hydrogen atom is independently represented, and any of X ¹¹ or X ¹² is a fluorine atom).

The content of the compound represented by the formula (I-6) relative to the present invention The total mass of the liquid crystal composition is preferably 2% by mass or more and 30% by mass or less, more preferably 4% by mass or more and 30% by mass or less, still more preferably 5% by mass or more and 30% by mass or less, and particularly preferably 6% by mass or less. It is more preferably 30% by mass or less, more preferably 9% by mass or more and 30% by mass or less, still more preferably 12% by mass or more and 30% by mass or less, still more preferably 14% by mass or more and 30% by mass or less, and still more preferably 16% by mass or less. The amount is 30% by mass or less, more preferably 18% by mass or more and 25% by mass or less, more preferably 20% by mass or more and 24% by mass or less, and particularly preferably 22% by mass or more and 23% by mass or less.

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

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

(wherein R ¹¹ and R ¹² 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, and X ¹² each independently Indicates a fluorine atom or a chlorine atom).

The content of the compound represented by the formula (I-7) is preferably 1% by mass or more and 30% by mass or less, more 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. More preferably, it is 3% by mass or more and 30% by mass or less, and particularly preferably 4% by mass or more and 30% by mass or less. More preferably, it is 6 mass% or more and 30 mass% or less, more preferably 8 mass% or more and 30 mass% or less, more preferably 10 mass% or more and 30 mass% or less, more preferably 12 mass% or more and 30 mass% or less, more preferably 12 mass% or more and 30 mass% or less. It is preferably 15% by mass or more and 25% by mass or less, more preferably 18% by mass or more and 24% by mass or less, and particularly preferably 21% by mass or more and 22% by mass or less.

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

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

(wherein R ¹⁶ and R ¹⁷ each independently represent an alkenyl group having 2 to 5 carbon atoms).

The type of the compound which can be combined is not particularly limited, but it is preferred to combine one to three types in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (I-8) is based on solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. The performance required is preferably 5% by mass or more and 65% by mass or less, more preferably 10% by mass or more and 5% by mass or less, and particularly preferably 15% by mass or more and 65 % by mass based on the total mass of the liquid crystal composition of the present invention. % or less, particularly preferably 20% by mass The amount is preferably 65 mass% or less, more preferably 25% by mass or more and 65% by mass or less, more preferably 30% by mass or more and 65% by mass or less, still more preferably 35% by mass or more and 65% by mass or less, and still more preferably 40% by mass or more. It is 65 mass% or less, more preferably 45 mass% or more and 60 mass% or less, more preferably 50 mass% or more and 58 mass% or less, and particularly preferably 55 mass% or more and 56 mass% or less.

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

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

(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, and A ² represents a 1,4-extension ring; Hexyl or 1,4-phenylene, 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, but is combined according to the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in another embodiment of the present invention, there are three types. Furthermore, in another embodiment of the present invention, it is four or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (II) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The required performance such as dielectric anisotropy is suitably adjusted.

The content of the above compound is, for example, 3 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. Alternatively, in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in still another embodiment of the present invention, the content is 7 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 10 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 14 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 16 to 50% by mass. Moreover, in the present invention In still another embodiment, the content is 20 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 23 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 26 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the compound is, for example, 3 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. Furthermore, in another embodiment of the present invention, the content is 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 3 to 35% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 10% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 5% by mass.

Furthermore, the compound represented by the formula (II) is preferably, for example, a compound selected from the group of compounds represented by the 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 formula (II-1) is preferably as per The performance at the low temperature, such as solubility, transfer temperature, electrical reliability, and birefringence, is adjusted, and is preferably 4% by mass or more and 24% by mass or less, more preferably 8% by mass or more and 18% by mass or less. It is 12% by mass or more and 14% by mass or less.

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

The content of the compound represented by the formula (10.1) is preferably adjusted according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is preferably 4 to 24% by mass, more preferably It is 8 to 18% by mass, and particularly preferably 8 to 14% by mass.

Further, the compound represented by the formula (II) is preferably, for example, a compound selected from the group of compounds represented by the 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, but is combined according to the required 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 in one embodiment of the present invention. Or, in the present invention In another embodiment, it is two or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (II-2) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, and residue. The required performance such as shadow, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound is, for example, 3 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. Alternatively, in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in still another embodiment of the present invention, the content is 7 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 10 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 14 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 16 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 23 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 26 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the compound is, for example, 3 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. Furthermore, in another embodiment of the present invention, the content is 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 3 to 35% by mass. Furthermore, in still another embodiment of the present invention The content is 3 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 10% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 5% by mass.

Furthermore, the compound represented by the formula (II-2) is preferably a compound represented by the formula (11.1) to the formula (11.3), and more preferably a compound represented by the formula (11.1).

The compound represented by the formula (11.1) or the compound represented by the formula (11.2) may be contained according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, or the formula (11.1) may be contained. Both the compound shown and the compound represented by the formula (11.2) or all of the compounds represented by the formula (11.1) to the formula (11.3). The content of the compound represented by the formula (11.1) or the formula (11.2) is preferably 3% by mass or more and 40% by mass or less, more preferably 5% by mass or more and 35% by mass based on the total mass of the liquid crystal composition of the present invention. In the following, it is particularly preferably 5% by mass or more and 30% by mass or less, particularly preferably 5% by mass or more and 25% by mass or less, and most preferably 5% by mass or more and 20% by mass or less.

Further, the content of the compound represented by the formula (11.1) is preferably from 3 to 40% by mass, more preferably the total mass of the liquid crystal composition of the present invention. It is 4 to 20% by mass, and particularly preferably 6 to 15% by mass.

Further, the compound represented by the formula (II) is preferably, for example, a compound selected from the group of compounds represented by the 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 one to three types of these compounds are preferably contained in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (II-3) must be such as solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. The required performance is suitable for adjustment. The content of the compound is preferably from 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention. More preferably, the content is 5 to 45% by mass, 8 to 45% by mass, 11 to 45% by mass, 14 to 45% by mass, 17 to 45% by mass, 20 to 45% by mass, and 23 to 45% by mass. 26 to 45 mass%, 29 to 45 mass%, or 2 to 45 mass%, 2 to 40 mass%, 2 to 35 mass%, 2 to 30 mass%, 2 to 2 mass%, 2 to 20 mass%, 2 to 15% by mass and 2 to 10% by mass.

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

The compound represented by the formula (12.1) may be contained according to the properties required for solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., or the compound represented by the formula (12.2) may be contained, or the formula (12.1) may be contained. Both the compound shown and the compound represented by the formula (12.2).

The content of the compound represented by the formula (12.1) or the formula (12.2) is preferably 3% by mass or more and 40% by mass or less, more preferably 5% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention. In the following, it is preferably 7% by mass or more and 40% by mass or less, more preferably 9% by mass or more and 40% by mass or less, still more preferably 11% by mass or more and 40% by mass or less, and still more preferably 12% by mass or more and 40% by mass or less. The amount is preferably 13% by mass or more and 40% by mass or less, more preferably 18% by mass or more and 30% by mass or less, and particularly preferably 21% by mass or more and 25% by mass or less. In addition, the content of the compound represented by the formula (12.2) is preferably 3% by mass or more and 40% by mass or less, more preferably 5% by mass or more and 40% by mass or less, based on the total mass of the liquid crystal composition of the present invention. It is preferably 8 mass% or more and 40 mass% or less, more preferably 10 mass% or more and 40 mass% or less, and still more preferably 12 mass% or more and 40 mass% or less, more preferably 15 mass% or more and 40 mass% or less, more preferably It is preferably 17% by mass or more and 30% by mass or less, and particularly 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 preferably 15% by mass based on the total mass of the liquid crystal composition of the present invention. More than 45 mass% or less, more preferably It is 19% by mass or more and 45% by mass or less, and particularly preferably 24% by mass or more and 40% by mass or less, and particularly preferably 30% by mass or more and 35% by mass or less.

In addition, the content of the compound represented by the formula (12.3) is preferably 0.05% by mass or more and 2% by mass or less, more preferably 0.1% by mass or more and 1% by mass or less, based on the total mass of the liquid crystal composition of the present invention. It is preferably 0.2% by mass or more and 0.5% by mass or less. The compound represented by the formula (12.3) may also be an optically active compound.

Further, the compound represented by the formula (II-3) is preferably, for example, a compound selected from the group of compounds represented by the 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 accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (II-3-1) is preferably adjusted according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is preferably 1% by mass. The above is 24 mass% or less, more preferably 4 mass% or more and 18 mass% or less, and particularly preferably 8 mass% or more and 14 mass% or less.

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

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

(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).

Only one type of these compounds may be contained, or two or more types may be contained, and it is preferable to mix suitably according to the required performance. The type of the compound that can be combined is not particularly limited, and one or two types of these compounds are preferably contained in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Tejia contains 1 to 3 species.

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

Further, the compound represented by the formula (II-4) is preferably a compound represented by the formula (14.1) to the formula (14.5), and particularly preferably a compound represented by the formula (14.2) or the formula (14.5).

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

(R ³¹ and R ³² 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 formula (III) is preferably 3% 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 required solubility or birefringence. It is preferably 6% by mass or more and 20% by mass or less, and particularly preferably 8% by mass or more and 15% by mass or less.

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

The content of the compound represented by the formula (15.1) is preferably 1 to 25% by mass, more preferably 2%, based on the total solubility of the liquid crystal composition of the present invention in consideration of the required solubility or birefringence. 15% by mass, particularly preferably 3 to 10% by mass, particularly preferably 4 to 8% by mass.

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

(R ³³ represents an alkenyl group having 2 to 5 carbon atoms, and R ³² each independently 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 formula (III-1) is preferably adjusted in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more. The mass% or less is more preferably 6% by mass or more and 18% by mass or less, and particularly preferably 10% by mass or more and 13% by mass or less.

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

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

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

The content of the compound represented by the formula (III-2) is preferably adjusted according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more. The mass% or less is more preferably 6% by mass or more and 18% by mass or less, and particularly preferably 10% by mass or more and 13% by mass or less.

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

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

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

The kind of the compound which can be combined is not particularly limited, but is combined according to the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Furthermore, in still another embodiment of the present invention, there are four types.

The content of the above compound is, for example, 2 to 40% 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 4 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 7 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 10 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 17 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 18 to 40% by mass. More, in this In another embodiment of the invention, the content is 20 to 40% by mass. Furthermore, 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 from 2 to 40% 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 of the compound is from 2 to 30% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is 2 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is 2 to 20% by mass. Furthermore, 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 2 to 5% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is 2 to 4% by mass.

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

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and each of X ⁵¹ and X ⁵² Independently represents a fluorine atom or a hydrogen atom).

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

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

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

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (20.2) is preferably in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably based on the total mass of the liquid crystal composition of the present invention. It is 1 to 20% by mass, more preferably 2 to 10% by mass, and particularly preferably 3 to 6% by mass.

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

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

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

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

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

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

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

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

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

(wherein R ⁵¹ and R ⁵² 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; and each of X ⁵¹ and X ⁵² Independently represents a fluorine atom or a hydrogen atom).

The types of compounds that can be combined are not particularly limited, but The combination is performed in accordance with the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, it is two or more types.

The content of the above compound is, for example, 2 to 40% 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 of the compound is 4 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 15 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 17 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 18 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 20 to 40% by mass. Furthermore, 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 is from 2 to 40% 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 of the compound is from 2 to 30% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is 2 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is 2 to 20% by mass. Furthermore, in another embodiment of the present invention, the aforementioned compound The content is 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 2 to 5% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is 2 to 4% by mass.

When it is desired that the liquid crystal composition of the present invention is in the form of a high Tni, it is preferred that the content of the compound represented by the formula (V-2) is slightly larger, and in the case of a low viscosity embodiment, it is preferred to Become a little less.

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

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

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

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

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

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

Furthermore, the compound represented by the formula (V) is preferably of the formula (V-3). The compound shown.

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

The kind of the compound which can be combined is not particularly limited, but is combined according to the required 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, it is three or more types.

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

Further, the compound represented by the formula (V-3) is preferably a compound represented by the formula (25.1) to the formula (25.3).

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

(wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - groups may independently be -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 selected from (d) 1, 4 - a cyclohexyl group (one -CH ₂ - or two or more -CH ₂ - which are not adjacent in this group may be substituted by -O- or -S-) and (e) 1,4-phenylene a group in the group consisting of one -CH= or two or more non-contiguous -CH=substitutable -N=, in the above group (d), base (e) One or more hydrogen atoms may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent 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-, when PM is 2, 3 or 4 and K ^M1 When plural is present, they may be the same or different. When PM is 2, 3 or 4 and the C ^M2 complex is present, they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom or a chlorine atom. Or a fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyanogen a group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group; except for the compound represented by the formula (ii).

The kind of the compound which can be combined is not particularly limited, but is 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Further, in still another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, there are six types. Furthermore, in another embodiment of the present invention, it is 7 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (M) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The required performance such as dielectric anisotropy is suitably adjusted.

The content of the above compound is, for example, 1 to 95% 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 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 30 to 95 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 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 is, for example, 1 to 95% 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 of the compound is from 1 to 85% by mass. 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.

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 preferred to set the above lower limit to To be slightly lower, the upper limit is made slightly lower. When the Tni of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the lower limit is made slightly lower and the upper limit is made slightly lower. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the lower limit slightly higher and the upper limit to be slightly higher.

R ^M1 is preferably a linear alkyl group having 1 to 5 carbon atoms and a linear alkoxy group having 1 to 4 carbon atoms when the ring structure to which the bond is bonded is a phenyl group (aromatic). And an alkenyl group having 4 to 5 carbon atoms, wherein the ring structure to which the bond is bonded is cyclohexane, meme, and When a saturated ring structure such as an alkane is used, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear carbon number of 2 to 5 are preferable. Alkenyl.

When the compound represented by the formula (M) is required to have chemical stability of the liquid crystal composition, it is preferred that the compound has no chlorine atom in its molecule. Further, the compound having a chlorine atom in the liquid crystal composition is preferably 5% or less, more preferably 3% or less, still more preferably 1% or less, still more preferably 0.5% or less, and particularly preferably substantially not contained. The term "substantially not contained" means a compound which is not formed as an impurity in the production of a compound, and means that a compound containing only a chlorine atom is mixed into a liquid crystal composition.

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

(wherein R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ⁸¹ to X ⁸⁵ each independently represent a hydrogen atom or A fluorine atom, Y ⁸ represents a fluorine atom or -OCF ₃ ).

The kind of the compound which can be combined is not particularly limited, but is 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, it is three or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (VIII) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The required performance such as dielectric anisotropy is suitably adjusted.

The content of the above compound 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 foregoing 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.

In addition, the content of the compound 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. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 30% by mass. 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.

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 to make the above lower limit value slightly lower and the upper limit value to be slightly lower. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the lower limit value is slightly lower and the upper limit value is made slightly lower. Also, in order to maintain a low driving voltage, it is desirable to increase the dielectric constant. In the case of the opposite sex, it is preferable to make the above lower limit value slightly higher and the upper limit value to be slightly higher.

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

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

The kind of the compound which can be combined is not particularly limited, but is 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, it is two or more types.

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

The content of the compound represented by the formula (26.1) is considered to be solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and is preferably 2 to 30 by mass based on the total mass of the liquid crystal composition of the present invention. %, more preferably 3 to 20% by mass, particularly preferably 3 to 10% by mass, and particularly preferably 3 to 7% by mass.

The content of the compound represented by the formula (26.2) is considered to be solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and is preferably 1 to 30 by mass based on the total mass of the liquid crystal composition of the present invention. %, more preferably 2 to 20 mass, especially preferably 2 to 10% by mass, and particularly preferably 2 to 6 mass%.

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

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

The kind of the compound which can be combined is not particularly limited, but is 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Alternatively, in still another embodiment of the present invention, it is three or more types.

The content of the compound represented by the formula (VIII-2) is considered to be solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and is preferably 2.5% by mass or more and 25% by mass or less, more preferably 8 or less. The mass% or more is 25% by mass or less, and particularly preferably 10% by mass or more and 20% by mass or less, and more preferably 12% by mass or more and 15% by mass or less.

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

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

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

The kind of the compound which can be combined is not particularly limited, but is 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types.

Further, the compound represented by the formula (VIII-3) is specifically preferably a compound represented by the formula (26.11) to the formula (26.14), more preferably a compound represented by the formula (26.11) or the formula (26.12). More preferably, it is a compound represented by the formula (26.12).

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

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ⁹¹ and X ⁹² each independently represent 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, but is 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Further, in still another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, it is six or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (IX) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, The required performance such as dielectric anisotropy is suitably adjusted.

The content of the above compound 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, more in the present invention In another embodiment, 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, in still another embodiment of the present invention, 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.

In addition, the content of the compound 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. Furthermore, in another embodiment of the present invention, the content of the compound is from 3 to 60% by mass. 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. Still another implementation of the present invention In the form, 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.

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 to make the above lower limit value slightly lower and the upper limit value to be slightly lower. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and a liquid crystal composition which is less likely to cause image sticking is required, it is preferable that the lower limit value is slightly lower and the upper limit value is made slightly lower. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the lower limit slightly higher and the upper limit to be slightly higher.

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

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents Fluorine atom or -OCF ₃ ).

The kind of the compound which can be combined is not particularly limited, but is 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 in one embodiment of the present invention. Or, in this In another embodiment of the invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, it is four or more types.

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

(In the formula, 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 kind of the compound which can be combined is not particularly limited, but is 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 in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, it is three or more types.

The content of the compound represented by the formula (IX-1-1) is considered to be solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and according to the embodiment, there are preferred upper and lower limits. .

For example, the content of the compound is from 1 to 40% by mass in one embodiment, and from 2 to 40% by mass in another embodiment, with respect to the total mass of the liquid crystal composition of the present invention, in still another embodiment. In the other embodiment, it is 4 to 40% by mass, and in another embodiment, it is 10 to 40% by mass, and in still another embodiment, it is 14 to 40% by mass. The state is 16 to 40% by mass.

Further, for example, the content of the compound is from 1 to 40% by mass in one embodiment, and from 1 to 35% by mass in another embodiment, with respect to the total mass of the liquid crystal composition of the present invention. The form is 1 to 30% by mass in the form, and is 1 to 25% by mass in still another embodiment.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.3) is preferably in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably based on the total mass of the liquid crystal composition of the present invention. It is 1% by mass or more and 30% by mass or less. More preferably, the content is 2% by mass or more and 20% by mass or less, 2% by mass or more and 15% by mass or less, 2% by mass or more and 12% by mass or less, 2% by mass or more and 9% by mass or less, or 4% by mass. % or more and 20% by mass or less, 6 mass% or more and 20 mass% or less, and 8 mass% or more and 20 mass% or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.5) is preferably in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably based on the total mass of the liquid crystal composition of the present invention. It is 3% by mass or more and 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 3% by mass or more and 15% by mass or less, particularly preferably 3% by mass or more and 10% by mass or less.

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

(In the formula, 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 preferably one to three types of combinations, more preferably one to four types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (IX-1-2) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. 30% by mass or less, more preferably 5% by mass or more and 30% by mass or less, and particularly preferably 8% by mass or less The amount is preferably 30% by mass or less, more preferably 10% by mass or more and 25% by mass or less, still more preferably 14% by mass or more and 22% by mass or less, and particularly preferably 16% by mass or more and 20% by mass or less.

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

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

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ⁹¹ and X ⁹² each independently represent 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 considered to be suitable for use in combination in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, there are one type, and in another embodiment, two types, in another embodiment, three types, and in still another embodiment, four types, and in another embodiment, In the embodiment, there are five types, and in still another embodiment, six or more types are combined.

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

(In the formula, 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 preferably one to three types of combinations in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like.

The content of the compound represented by the formula (IX-2-1) is based on properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has a preferred upper limit value per embodiment. lower limit.

For example, in one embodiment of the present invention, the content of the compound 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 2 to 40% by mass, and in still another embodiment, the content of the compound is 4 to 40% by mass. In still another embodiment, the content of the compound is In another embodiment, the content of the compound is 14 to 40% by mass, and in still another embodiment, the content of the compound is 16 to 40% by mass, and in still another embodiment The content of the aforementioned compound is 21 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass based on the total mass, and in another embodiment, the content of the compound is from 1 to 35% by mass. In one embodiment, the content of the compound is from 1 to 30% by mass, and in still another embodiment, the content of the compound is from 1 to 25% by mass. In still another embodiment, the content of the compound is 1~ 22% by mass, in still another embodiment, the content of the compound is 1 to 20% by mass, and in still another embodiment, the content of the compound is 1 to 10% by mass, and in still another embodiment, The content of the above compound is 1 to 7% by mass, and in still another embodiment, the content of the compound is 1 to 5% by mass.

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

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

(In the formula, 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 preferably one to three types of combinations, more preferably one to four types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (IX-2-2) is based on properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has upper and lower limits for each embodiment. . For example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is from 2 to 40% by mass. %.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass based on the total mass, and in another embodiment, the content of the compound is from 1 to 35% by mass. In one embodiment, the content of the compound is from 1 to 30% by mass, and in still another embodiment, the content of the compound is from 1 to 25% by mass. In still another embodiment, the content of the compound is 1~ 22% by mass, in still another embodiment, the content of the compound is 1 to 15% by mass, and in still another embodiment, the content of the compound is 1 to 12% by mass.

Further, the compound represented by the formula (IX-2-2) is preferably a formula The compound represented by the formula (31.1) to the formula (31.4) is more preferably a compound represented by the formula (31.2) to the formula (31.4), and particularly preferably a compound represented by the formula (31.2).

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

(In the formula, 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 preferably one type to two types of combination in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like.

The content of the compound represented by the formula (IX-2-3) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 30% by mass or less, more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 6% by mass or more and 15% by mass or less, particularly preferably 8% by mass or more and 10% by mass or less.

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

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

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

The content of the compound represented by the formula (IX-2-4) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 30% by mass or less, more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 6% by mass or more and 15% by mass or less, particularly preferably 8% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (IX-2-4) is preferably a compound represented by the formula (33.1) to the formula (33.6), more preferably a formula (33.1) and/or a formula (33.3). Compound.

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

(In the formula, 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 considered to be suitable for use in combination in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, there are one type, and in another embodiment, two types, in another embodiment, three types, and in still another embodiment, four types or more.

The content of the compound represented by the formula (IX-2-5) is considered to be low The characteristics of solubility, temperature, electrical reliability, and birefringence under temperature have an upper limit and a lower limit in each embodiment. For example, in one embodiment of the present invention, the content of the compound is 4 to 45% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 8 to 45 mass. In still another embodiment, the content of the compound is 12 to 45% by mass, and in still another embodiment, the content of the compound is 21 to 45% by mass. In still another embodiment, the compound The content is 30 to 45% by mass. In still another embodiment, the content of the compound is 31 to 45% by mass. In still another embodiment, the content of the compound is 34 to 45% by mass. Further, for example, in one embodiment of the present invention, the content of the compound is 4 to 45% by mass based on the total mass, and in another embodiment, the content of the compound is 4 to 40% by mass. In one embodiment, the content of the compound is 4 to 35% by mass, and in still another embodiment, the content of the compound is 4 to 32% by mass. In still another embodiment, the content of the compound is 4~ 22% by mass, in still another embodiment, the content of the compound is 4 to 13% by mass, and in still another embodiment, the content of the compound is 4 to 9% by mass. In still another embodiment, The content of the above compound is 4 to 8% by mass, and in still another embodiment, the content of the compound is 4 to 5% by mass.

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 to make the above lower limit value slightly lower and the upper limit value to be slightly lower. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and a liquid crystal composition which is less likely to cause image sticking is required, it is preferable that the lower limit value is slightly lower and the upper limit value is made slightly lower. . Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the lower limit slightly higher and the upper limit to be slightly higher.

Further, the compound represented by the formula (IX-2-5) is preferably a compound represented by the formula (34.1) to the formula (34.7), more preferably a formula (34.1), a formula (34.2) or a formula (34.3). And / or a compound represented by the formula (34.5).

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

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁹¹ and X ⁹² each independently represent a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or 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 formula, 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 preferably one type to two types of combination in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like.

The content of the compound represented by the formula (IX-3-1) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 3% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 30% by mass or less, more preferably 7% by mass or more and 30% by mass or less, and particularly preferably 13% by mass or more and 20% by mass or less, and particularly preferably 15% by mass or more and 18% by mass or less.

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

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

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

The compound which can be combined is not particularly limited, and is considered to be suitable for each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, it is one type. Further, in another embodiment of the present invention, there are two types. In still another embodiment, there are three types. In still another embodiment, there are four types. In still another embodiment, it is 5 or more types.

The content of the compound represented by the formula (X) is based on properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has an upper limit and a lower limit in each embodiment. For example, in one embodiment of the present invention, the content of the compound is 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 3 to 45 mass. In still another embodiment, the content of the compound is 6 to 45% by mass, and in still another embodiment, the content of the compound is 8 to 45% by mass. In still another embodiment, the compound is The content is 9 to 45% by mass. In still another embodiment, the content of the compound is 11 to 45% by mass. In still another embodiment, the content of the compound is 12 to 45% by mass. Furthermore, In still another embodiment, the content of the compound is from 18 to 45% by mass. In still another embodiment, the content of the compound is from 19 to 45% by mass. In still another embodiment, the content of the compound is 23 to 45% by mass. In still another embodiment, the content of the compound is from 25 to 45% by mass. Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 45% by mass based on the total mass, and in another embodiment, the content of the compound is 2 to 35% by mass. In one embodiment, the content of the compound is 2 to 30% by mass, and in still another embodiment, the content of the compound is 2 to 25% by mass. In still another embodiment, the content of the compound is 2~ 20% by mass, in still another embodiment, the content of the compound is 2 to 13% by mass, and in still another embodiment, the content of the compound is 2 to 9% by mass, and in still another embodiment, The content of the above compound is 2 to 6% by mass, and in still another embodiment, the content of the compound is 2 to 3% by mass.

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 to make the above lower limit value slightly lower and the upper limit value to be slightly lower. Further, in the case of a liquid crystal composition which is less likely to cause image sticking, it is preferable to make the above lower limit value slightly lower and the upper limit value to be slightly lower. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the lower limit slightly higher and the upper limit to be slightly higher.

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

(wherein, X ¹⁰¹ to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms; Oxy).

The compound which can be combined is not particularly limited, and is considered to be suitable for each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, it is one type. Further, in another embodiment of the present invention, there are two types. In still another embodiment, there are three types. In still another embodiment, there are four types. In still another embodiment, it is 5 or more types.

The content of the compound represented by the formula (X-1) is in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has an upper limit and a lower limit in each embodiment. For example, in one embodiment of the present invention, the content of the compound is 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 3 to 40% by mass. In still another embodiment, the content of the compound is 5 to 40% by mass, and in still another embodiment, the content of the compound is 6 to 40% by mass. In still another embodiment, the compound is The content is 7-40% by mass, and in still another embodiment, the content of the compound is 8-40% by mass, and in still another embodiment, the content of the compound is 9-40% by mass. In still another embodiment, the content of the compound is from 13 to 40% by mass. In still another embodiment, the content of the compound is from 18 to 40% by mass. In still another embodiment, the content of the compound is from 23 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 40% by mass based on the total mass, and in another embodiment, the content of the compound is 2 to 30% by mass. In one embodiment, the content of the compound is 2 to 25% by mass, and in still another embodiment, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 2%. In 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 6% by mass. In still another embodiment, The content of the aforementioned compound is 2 to 4% by mass.

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

(In the formula, 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 considered to be suitable for each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, it is one type. Further, in another embodiment of the present invention, there are two types. In still another embodiment, there are three types. In yet another embodiment, there are four Above class.

The content of the compound represented by the formula (X-1-1) is based on properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has upper and lower limits per embodiment. . For example, in one embodiment of the present invention, the content of the compound is 3 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 4 to 30% by mass. In still another embodiment, the content of the compound is 6 to 30% by mass, and in still another embodiment, the content of the compound is 9 to 30% by mass. In still another embodiment, the compound is The content is 12 to 30% by mass, and in still another embodiment, the content of the compound is 15 to 30% by mass, and in still another embodiment, the content of the compound is 18 to 30% by mass. In still another embodiment, the content of the compound is 21 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 3 to 30% by mass based on the total mass, and in another embodiment, the content of the compound is from 3 to 20% by mass. In one embodiment, the content of the compound is from 3 to 13% by mass, and in still another embodiment, the content of the compound is from 3 to 10% by mass. In still another embodiment, the content of the compound is 3~ 7% by mass.

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

Furthermore, 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 formula, 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 formula (X-1-2) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 20% by mass or less, more preferably 2% by mass or more and 16% by mass or less, and particularly preferably 6% by mass or more and 12% by mass or less, and more preferably 6% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention is specifically preferably a formula (37.1) to a formula (37.4). The compound shown preferably contains a compound of the formula (37.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (37.2) is preferably in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably based on the total mass of the liquid crystal composition of the present invention. It is 1 to 20% by mass, more preferably 2 to 10% by mass, particularly preferably 2 to 8% by mass, and particularly preferably 2 to 5% by mass.

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

(In the formula, 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc. are considered. It is preferably one to two or more types.

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

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

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

(wherein, X ¹⁰² to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, and 2 to 2 carbon atoms; 5 alkenyl or alkoxy having 1 to 4 carbon atoms).

The compound which can be combined is not particularly limited, and it is preferably one type to two or more types in combination in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

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

(wherein, X ¹⁰² to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms; Oxy).

The compound which can be combined is not particularly limited, and it is preferably one type to two or more types in combination in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

In addition, the compound represented by the 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 formula, 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 preferably one type to two or more types in combination in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (X-3-1) is preferably 1% by mass or more, more preferably 2% by mass or more, and particularly preferably 3% by mass based on the total mass of the liquid crystal composition of the present invention. the above. In addition, the maximum ratio is preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 6% by mass or less, and particularly preferably 4% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. .

Further, the compound represented by the formula (X-3-1) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (41.1) to the formula (41.4), of which a preferred formula is preferred. The compound shown in (41.2).

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

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

The compound which can be combined is not particularly limited, and it is preferably one type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

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

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

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

The content of the compound represented by the formula (X-4-1) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 2% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less, and particularly preferably 10% by mass or more and 15% by mass or less, and particularly preferably 10% by mass or more and 13% by mass or less.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (42.3) is considered to be solubility at low temperature, transfer temperature, electrical The reliability and the like are preferably from 1 to 20% by mass, more preferably from 2 to 10% by mass, particularly preferably from 2 to 8% by mass, based on the total mass of the liquid crystal composition of the present invention.

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

(In the formula, 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 preferably one type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (X-4-2) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 2% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less, and particularly preferably 10% by mass or more and 15% by mass or less, and particularly preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (X-4-2) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (42.11) to the formula (42.14), of which a preferred formula is preferred. (42.13) or a compound of the formula (42.14).

Furthermore, the compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-3).

(In the formula, 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 preferably one type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (X-4-3) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 2% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less, and particularly preferably 10% by mass or more and 15% by mass or less, and particularly preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (X-4-3) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (42.21) to the formula (42.24), of which a preferred formula is preferred. The compound shown in (42.22).

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

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

The compound which can be combined is not particularly limited, and solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc. are considered. It is preferably one to two or more types, more preferably one to three or more types.

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

(In the formula, 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 preferably one type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

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

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

(In the formula, 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 preferably one type to two or more types in combination in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (X-6) is in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has an upper limit and a lower limit in each embodiment. For example, in one embodiment of the present invention, the content of the compound is 4 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and 5 to 30% by mass in another embodiment. In one embodiment, it is 6 to 30% by mass, and in still another embodiment, it is 8 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the aforementioned compound is based on the total mass of the liquid crystal composition of the present invention. 1 to 30% by mass in another embodiment is 1 to 20% by mass, and in another embodiment, 1 to 13% by mass, and in still another embodiment, 1 to 10% by mass.

Further, the compound represented by the formula (X-6) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (44.1) to the formula (44.4), and preferably contains the formula (44.1). And / or a compound of the formula (44.2).

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

(In the formula, 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 preferably one type to two or more types in combination in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (X-7) is in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has an upper limit and a lower limit in each embodiment.

For example, in one embodiment of the present invention, the content of the compound is 4 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 5 to 30% by mass. In still another embodiment, the content of the compound is 6 to 30% by mass, and in still another embodiment, the content of the compound is 8 to 30% by mass. In still another embodiment, the compound is The content is 9 to 30% by mass, and in still another embodiment, the content of the compound is 11 to 30% by mass, and in still another embodiment, the content of the compound is 14 to 30% by mass. In still another embodiment, the content of the compound is from 18 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 4 to 30% by mass based on the total mass, and in another embodiment, the content of the compound is 4 to 20% by mass. In one embodiment, the content of the compound is 4 to 13% by mass, and in still another embodiment, the content of the compound is 4 to 10% by mass. In still another embodiment, the content of the compound is 4~ 7 mass%, and in still another embodiment, it is 3% by mass.

Further, the compound represented by the formula (X-7) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (44.11) to the formula (44.14), and preferably contains the formula (44.13). ) the compound shown.

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

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

The compound which can be combined is not particularly limited, and solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc. are considered. It is preferably one to three or more types.

The content of the compound represented by the formula (XI) is in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has an upper limit and a lower limit in each embodiment. 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, and in another embodiment, the content of the compound is 4 to 30% by mass. In still another embodiment, the content of the compound is 5 to 30% by mass, and in still another embodiment, the content of the compound is 7 to 30% by mass. In still another embodiment, the compound is The content is 9 to 30% by mass, and in still another embodiment, the content of the compound is 10 to 30% by mass, and in still another embodiment, the content of the compound is 12 to 30% by mass. In still another embodiment, the content of the compound is from 13 to 30% by mass. In still another embodiment, the content of the compound is 15 to 30% by mass. In still another embodiment, the content of the compound is from 18 to 30% 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, and in another embodiment, the content of the compound is 2 to 25% by mass. 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~ 10% by mass, 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 cell gap, the content of the compound represented by the formula (XI) is preferably slightly increased. When used for liquid crystal display elements with low driving voltage, The content of the compound represented by the formula (XI) is slightly increased. Further, when it is used for a liquid crystal display element used in a low-temperature environment, the content of the compound represented by the formula (XI) is preferably slightly less. When it is used for a liquid crystal composition of a liquid crystal display element having a high reaction rate, the content of the compound represented by the general formula (XI) is preferably slightly less.

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

(wherein R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

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

The content of the compound represented by the formula (XI-1) is preferably 1% 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. The mass% or less is more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 4% by mass or more and 20% by mass or less, more preferably 6% by mass or more and 15% by mass or less, particularly preferably 9% by mass or more and 12% by mass. %the following.

Further, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention is specifically preferably a formula (45.1) to a formula (45.4). The compound shown preferably contains a compound represented by the formula (45.2) to the formula (45.4), more preferably a compound represented by the formula (45.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.2) is preferably in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably based on the total mass of the liquid crystal composition of the present invention. It is 1 to 25% by mass, more preferably 2 to 15% by mass, particularly preferably 3 to 10% by mass, and particularly preferably 4 to 8% by mass.

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-2).

(In the formula, 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 that can be combined is not particularly limited, and the low temperature is considered. The solubility, transfer temperature, electrical reliability, birefringence, and the like in the following are appropriately combined for each embodiment. For example, in one embodiment of the present invention, one type is used, and in another embodiment, two types are used, and in still another embodiment, three types or more are combined.

The content of the compound represented by the formula (XI-2) is preferably a solubility at a low temperature, a transfer temperature, an electrical reliability, etc., and is preferably 1% by mass or more based on the total mass of the liquid crystal composition of the present invention. The mass% or less is more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 4% by mass or more and 20% by mass or less, more preferably 6% by mass or more and 15% by mass or less, particularly preferably 9% by mass or more and 12% by mass. %the following.

Further, the compound represented by the formula (XI-2) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (45.11) to the formula (45.14), and preferably contains the formula (45.12). The compound represented by the formula (45.14) preferably contains the compound represented by the formula (45.12).

The compound represented by the formula (X) is preferably a compound selected from the group represented by the formula (XII).

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

The compound which can be combined is not particularly limited, and it is preferably one to three or more types, more preferably one to four or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

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

(wherein R 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 type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (XII-1) is considered to be low temperature. The solubility, the transfer temperature, the electrical reliability, and the like of the liquid crystal composition of the present invention are preferably 1% by mass or more and 15% by mass or less, more preferably 2% by mass or more and 10% by mass or less. It is preferably 3% by mass or more and 8% by mass or less, and particularly preferably 4% by mass or more and 6% by mass or less.

Further, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (46.1) to the formula (46.4), and preferably contains the formula (46.2). ) to a compound represented by the formula (46.4).

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

(wherein 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 type to two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (XII-2) is preferably 1% 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. The mass% or less is more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 4% by mass or more and 17% by mass or less, more preferably 6% by mass or more and 15% by mass or less, particularly preferably 9% by mass or more and 13% by mass. %the following.

Further, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention is specifically preferably a compound represented by the formula (47.1) to the formula (47.4), and preferably contains the formula (47.2). ) to a compound represented by the formula (47.4).

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

(wherein, X ¹³¹ to X ¹³⁵ each independently represent a fluorine atom or a hydrogen atom, and R ¹³ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms; Oxy group, Y ¹³ represents a fluorine atom or -OCF ₃ ; except for the compound represented by the formula (i)).

The type of the compound which can be combined is not particularly limited, and among these compounds, it is preferable to contain one type to two types, more preferably one type to three types, and more preferably one type to four types.

The content of the compound represented by the formula (XIII) is in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has an upper limit and a lower limit in each embodiment.

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, and in another embodiment, the content of the compound is 4 to 30% by mass. In still another embodiment, the content of the compound is 5 to 30% by mass, and in still another embodiment, the content of the compound is 7 to 30% by mass. In still another embodiment, the compound is The content is 9 to 30% by mass, and in still another embodiment, the content of the aforementioned compound is 11 to 30% by mass, in still another embodiment, the content of the compound is 13 to 30% by mass. In still another embodiment, the content of the compound is from 14 to 30% by mass. In still another embodiment, the content of the compound is from 16 to 30% by mass. In still another embodiment, the content of the compound is from 20 to 30% 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, and in another embodiment, the content of the compound is 2 to 25% by mass. 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~ 10% by mass, 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 cell gap, the content of the compound represented by the formula (XIII) is preferably slightly increased. When it is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the formula (XIII) is preferably slightly increased. Further, when it is used for a liquid crystal display element used in a low-temperature environment, the content of the compound represented by the formula (XIII) is preferably slightly less. When it is used for a liquid crystal composition of a liquid crystal display element having a high reaction rate, the content of the compound represented by the formula (XIII) is preferably slightly less.

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

(In the formula, R ¹³ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound represented by the formula (XIII-1) is preferably contained in an amount of from 1 to 25% by mass, more preferably from 3 to 25% by mass, particularly preferably from 5 to 20% by mass, based on the total mass of the liquid crystal composition of the present invention. , especially good contains 10~15% by mass.

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

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

(In the formula, 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 to two or more kinds of these compounds.

The compound represented by the formula (XIII-2) is preferably contained in an amount of 5 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, more preferably 6 to 25% by mass, particularly preferably 8 to 20% by mass. , especially good contains 10~15% by mass.

Further, the compound represented by the formula (XIII-2) is preferably a compound represented by the formula (49.1) to the formula (49.4), more preferably a compound represented by the formula (49.1) and/or the formula (49.2).

In the liquid crystal composition of the present invention, the formula represented by the formula (49.1) The content of the compound is preferably from 1 to 20% by mass, more preferably from 2 to 10% 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. , especially good for 3 to 8 mass%.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (49.2) is preferably in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably based on the total mass of the liquid crystal composition of the present invention. It is 1 to 20% by mass, more preferably 2 to 10% by mass, and particularly preferably 3 to 8% by mass.

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

(In the formula, 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 one to two kinds of these compounds.

The compound represented by the formula (XIII-3) is preferably contained in an amount of 2 to 20% by mass, more preferably 4 to 20% by mass, particularly preferably 9 to 17% by mass, based on the total mass of the liquid crystal composition of the present invention. , especially good contains 11 to 14% by mass.

Further, the compound represented by the formula (XIII-3) is preferably a compound represented by the formula (50.1) to the formula (50.4), more preferably a compound represented by the formula (50.1) or the formula (50.2).

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

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ¹⁴¹ to X ¹⁴⁴ each independently represent 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 the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, and the like are considered, and are appropriately combined for each embodiment. For example, in one embodiment of the present invention, it is one type. Furthermore, in another embodiment of the present invention, there are two types. Alternatively, in still another embodiment of the present invention, there are three types. Further, in still another embodiment of the present invention, there are four types. Or, in the invention In another embodiment, there are five types. Alternatively, in still another embodiment of the present invention, it is six or more types.

The content of the compound represented by the formula (XIV) is in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has an upper limit and a lower limit in each embodiment.

For example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is from 7 to 40% by mass. In still another embodiment, the content of the compound is 8 to 40% by mass, and in still another embodiment, the content of the compound is 11 to 40% by mass. In still another embodiment, the compound is The content of the compound is from 16 to 40% by mass, and in still another embodiment, the content of the compound is from 18 to 40% by mass. In still another embodiment, the content of the compound is from 19 to 40% by mass. In still another embodiment, the content of the compound is from 22 to 40% by mass. In still another embodiment, the content of the compound is from 25 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass, and in another embodiment, the content of the compound is from 3 to 35% by mass. In one embodiment, the content of the compound is 3 to 30% by mass, and in still another embodiment, the content of the compound is 3 to 25% by mass. In still another embodiment, the content of the compound is 3~ 20% by mass, in still another embodiment, the content of the compound is from 3 to 15% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the formula (XIV) is preferably slightly increased. Further, in the case of a liquid crystal composition used for a liquid crystal display element having a high reaction rate, the content of the compound represented by the formula (XIV) is preferably slightly less.

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

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms; and Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ ).

The type of the compound which can be combined is not limited, and it is preferably one to three types of combinations in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like.

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

(In the formula, R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms).

The content of the compound represented by the formula (XIV-1) is preferably 2% by mass or more, more preferably 4% by mass or more, and particularly preferably 7% by mass or more, based on the total mass of the liquid crystal composition of the present invention. More preferably 10% by mass The upper part is preferably 18% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., the maximum ratio is preferably 30% by mass or less, more preferably 27% by mass or less, still more preferably 24% by mass or less, and particularly preferably less than 21% by mass. %.

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

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

(In the formula, R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms).

The content of the compound represented by the formula (XIV-1-2) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. 15% by mass or less, more preferably 3% by mass or more and 13% by mass or less, and particularly preferably 5% by mass or less 11% by mass or less, particularly preferably 7% by mass or more and 9% by mass or less

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

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

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ¹⁴¹ to X ¹⁴⁴ each independently represent a fluorine atom or A hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ ; except for the compound represented by the formula (i)).

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

The content of the compound represented by the formula (XIV-2) is in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and has an upper limit and a lower limit in each embodiment.

For example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is from 7 to 40% by mass. In still another embodiment, the content of the compound is 8 to 40% by mass, and in still another embodiment, the content of the compound is 10 to 40% by mass. In still another embodiment, the compound is The content of the compound is from 11 to 40% by mass, and in still another embodiment, the content of the compound is from 12 to 40% by mass. In still another embodiment, the content of the compound is from 18 to 40% by mass. In still another embodiment, the content of the compound is from 19 to 40% by mass. In still another embodiment, the content of the compound is from 21 to 40% by mass. In still another embodiment, 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 is from 3 to 40% by mass, based on the total mass. In another embodiment, the content of the compound is 3 to 35% by mass, and in still another embodiment, the content of the compound is 3 to 25% by mass, and in still another embodiment, the content of the compound is 3 to 20%. In another embodiment, the content of the compound is from 3 to 15% by mass, and in still another embodiment, the content of the compound is from 3 to 10% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the formula (XIV-2) is preferably slightly increased. Further, in the case of a liquid crystal composition used for a liquid crystal display element having a high reaction rate, the content of the compound represented by the formula (XIV-2) is preferably slightly less.

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

(In the formula, R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-1) is considered to be solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 15% by mass or less, more preferably 3% by mass or more and 13% by mass or less, and particularly preferably 5% by mass or more and 11% by mass or less, and particularly preferably 7% by mass or more and 9% by mass or less.

Further, the compound represented by the formula (XIV-2-1) is specifically preferably a compound represented by the formula (53.1) to the formula (53.4), of which a preferred formula is preferred. (53.4) The compound shown.

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

(In the formula, R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-2) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 3% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 20% by mass or less, more preferably 6% by mass or more and 17% by mass or less, and particularly preferably 9% by mass or more and 15% by mass or less, and particularly preferably 12% by mass or more and 14% by mass or less.

The compound represented by the formula (XIV-2-2) is specifically preferably a compound represented by the formula (54.1) to the formula (54.4), preferably containing the formula (54.2) and/or the formula (54.4). Compound.

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

(In the formula, R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-3) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 5% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 30% by mass or less, more preferably 9% by mass or more and 27% by mass or less, and particularly preferably 12% by mass or more and 24% by mass or less, and particularly preferably 12% by mass or more and 20% by mass or less.

Further, the compound represented by the formula (XIV-2-3) is specifically preferably a compound represented by the formula (55.1) to the formula (55.4), and preferably contains the formula (55.2) and/or the formula (55.4). The compound shown.

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

(In the formula, R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

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

The content of the compound represented by the formula (XIV-2-4) is based on solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. The characteristics have an upper limit value and a lower limit value in each embodiment.

For example, in one embodiment of the present invention, the content of the compound is 2 to 35% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, the content of the compound is 5 to 35 mass. In still another embodiment, the content of the compound is 8 to 35% by mass, and in still another embodiment, the content of the compound is 9 to 35% by mass, and in still another embodiment of the present invention The content of the compound is from 10 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 18 to 35% by mass. In still another embodiment of the present invention, the content of the compound is 21~35 mass%. In still another embodiment of the present invention, the content of the compound is from 22 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 24 to 35% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 35% by mass based on the total mass, and in another embodiment, the content of the compound is 2 to 30% by mass. In one embodiment, the content of the compound is 2 to 25% by mass, and in still another embodiment, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 2%. In another embodiment, the content of the compound is 2 to 10% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the formula (XIV-2-4) is preferably slightly increased. Further, in the case of a liquid crystal composition used for a liquid crystal display element having a high reaction rate, the content of the compound represented by the formula (XIV-2-4) is preferably used. Become a little less.

Further, the compound represented by the formula (XIV-2-4) is specifically preferably a compound represented by the formula (56.1) to the formula (56.4), and preferably contains the formula (56.1), the formula (56.2) or the formula. (56.4) The compound shown.

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

(In the formula, 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 formula (XIV-2-5) is based on solubility at low temperature, transfer temperature, electrical reliability, etc., relative to the present invention. The total mass of the liquid crystal composition of the present 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, particularly preferably 13% by mass or more and 18% by mass or less, particularly preferably 13% by mass or less. % or more and 15% by mass or less.

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

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

(In the formula, 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 formula (XIV-2-6) is considered to be low The solubility in the temperature, the transfer temperature, the electrical reliability, and the like are preferably 5% by mass or more and 25% by mass or less, and more preferably 10% by mass or more and 22% by mass or less based on the total mass of the liquid crystal composition of the present invention. It is particularly preferably 15% by mass or more and 20% by mass or less, and particularly preferably 15% by mass or more and 17% by mass or less.

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

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 molecule.

When the reliability and long-term stability of the liquid crystal composition are emphasized, the content of the compound having a carbonyl group is preferably 5% by mass or less, more preferably 3% by mass or less, and particularly preferably 1 mass, based on the total mass of the composition. Below %, the best is not substantially contained.

When the stability of the UV irradiation is emphasized, the content of the chlorine atom-substituted compound is preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 5% by mass or less, based on the total mass of the composition. Jia is not actually included.

Preferably, the content of the compound having a ring structure of 6 members is increased in the molecule, and the content of the compound having a ring structure of 6 members is preferably 80% by mass or more, more preferably the total mass of the composition. It is 90% by mass or more, and particularly preferably 95% by mass or more. It is preferable to form a liquid crystal composition only by a compound having a ring structure of substantially 6 in the molecule.

In order to suppress deterioration of the liquid crystal composition due to oxidation, 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 is preferably relative to the total mass of the above composition. 10% by mass or less, more preferably 5% by mass or less, and particularly preferably substantially not contained.

When attention is paid to the improvement of viscosity and the improvement of Tni, it is preferred to reduce the content of a compound having a 2-methylbenzene-1,4-diyl group in which a hydrogen atom can be substituted into a halogen, and the above has 2 in the molecule. The content of the -methylbenzene-1,4-diyl compound is preferably 10% by mass or less, more preferably 5% by mass or less, and particularly preferably substantially not contained, based on the total mass of the above-mentioned composition.

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

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

(wherein, X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group, and Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - (wherein s represents an integer from 2 to 7, the oxygen atom is bonded to the 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 each independently represent a fluorine atom or a hydrogen atom), -C≡C- or a single a bond, M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and all of the 1,4-phenylene groups in the formula may be substituted by a fluorine atom. .

Preferably, 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 preferably one of them represents a hydrogen atom, and the other One represents a compound of a methyl group. The polymerization rate of these compounds is the fastest in the diacrylate derivative, the dimethacrylate derivative is slow, and the asymmetric compound is in the middle thereof, and the preferred aspect can be used according to the use thereof. Among the PSA display elements, dimethacrylate derivatives are particularly preferred.

Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -, but in the PSA display element, at least one is preferably a single bond. Preferred are all compounds which represent a single bond, or one of which is a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -. In this case, an alkyl group of 1 to 4 is preferable, and s is preferably 1 to 4.

Z ^{201 is} preferably -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ - or The key is more preferably -COO-, -OCO- or a single bond, and particularly preferably a single bond.

M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which an arbitrary hydrogen atom may be substituted by a fluorine atom, and is preferably a 1,4-phenylene group or a single bond. When M ²⁰¹ represents a ring structure other than a single bond, Z ^{201 is} preferably a linking group other than a single bond, and when M ²⁰¹ is a single bond, Z ^{201 is} preferably a single bond.

Based on these points, in the general formula (XX), the ring structure between Sp ²⁰¹ and Sp ²⁰² is specifically preferably the structure described below.

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

(wherein both ends are bonded to Sp ²⁰¹ or Sp ²⁰² ).

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

From the above, as the polymerizable monomer, the formula (XX-1) to the formula (XX-4) are particularly preferable, and among them, the formula (XX-2) is most preferable.

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

When a monomer is added to the liquid crystal composition of the present invention, polymerization is carried out even when the polymerization initiator is not present, but a polymerization initiator may be contained in order to promote polymerization. Examples of the polymerization initiator include benzoin ethers, diphenylketones, acetophenones, benzyl ketals, and mercaptophosphine oxides.

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

(wherein R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or two or more CH ₂ groups in the alkyl group are not directly adjacent to each other in the oxygen atom; Substituted by -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, M ^Q represents trans-1,4 - 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 two or more CH ₂ groups in the alkyl group may 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 -, preferably a linear alkane having from 1 to 10 carbon atoms a linear alkyl group, a linear alkoxy group, a linear CH ₂ group substituted with -OCO- or -COO-, a branched alkyl group, a branched alkoxy group, and a CH ₂ group substituted with -OCO a branched alkyl group of -OR-COO-, more preferably a linear alkyl group having 1 to 20 carbon atoms, a linear alkyl group in which 1 CH ₂ group is substituted with -OCO- or -COO-, a branched alkyl group The base, branched alkoxy group, and one CH ₂ group are substituted with a branched alkyl group of -OCO- or -COO-. M ^Q represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, preferably a trans-1,4-cyclohexylene group or a 1,4-phenylene group.

More specifically, the compound represented by the formula (Q) is preferably a compound represented by the following formula (Q-a) to formula (Q-d).

In the formula, R ^{Q1 is} preferably a linear alkyl group or a branched alkyl group having 1 to 10 carbon atoms, and R ^{Q2 is} preferably a linear alkyl group or a branched alkyl group having 1 to 20 carbon atoms, and R ^Q3 is more preferred. Preferred 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 L ^{Q is} preferably a linear alkyl group or a branch having 1 to 8 carbon atoms. Chain alkyl. Among the compounds represented by the formula (Qa) to the formula (Qd), a compound represented by the formula (Qc) and the formula (Qd) is more preferred.

The liquid crystal composition of the present invention preferably contains one or two kinds of compounds represented by the formula (Q), more preferably one to five, and the content thereof is preferably from 0.001 to 1% by mass, more preferably It is 0.001 to 0.1% by mass, particularly preferably 0.001 to 0.05% by mass.

<Liquid crystal display element>

The liquid crystal composition containing a polymerizable compound of the present invention is capable of polymerizing a polymerizable compound contained therein by ultraviolet irradiation to impart a liquid crystal alignment ability, and is used for liquid crystal which controls the amount of light transmitted by the birefringence of the liquid crystal composition. Display component. For liquid crystal display elements, suitable for AM-LCD (active matrix liquid crystal display elements), TN (nematic liquid crystal display elements), STN-LCD (super twisted nematic liquid crystal display elements), OCB-LCD and IPS-LCD (surface) The internal switching liquid crystal display element) is particularly suitable for an AM-LCD, and can be used for a transmissive or reflective type liquid crystal display element.

The two substrates of the liquid crystal cell used in the liquid crystal display element can be made of a transparent material such as glass or plastic, and one of them can also be made of an opaque material such as tantalum. The transparent substrate having a transparent electrode layer can be obtained, for example, by sputtering indium tin oxide (ITO) on a transparent substrate such as a glass plate.

The color filter can be produced, for example, by a pigment dispersion method, a printing method, an electrodeposition method, a dyeing method, or the like. Demonstrate by pigment In the method of producing a color filter of the method, a curable coloring composition for a color filter is applied onto the transparent substrate, subjected to a patterning treatment, and then cured by heating or light irradiation. By performing this step for each of the three colors of red, green, and blue, a pixel portion for a color filter can be formed. Further, a pixel electrode provided with an active element such as a TFT, a thin film diode, or a metal insulator metal specific resistance element may be provided on the substrate.

The substrates are opposed to each other such that the transparent electrode layer is inside. In this case, the interval between the substrates can also be adjusted via the spacer. In this case, it is preferred to adjust so that the thickness of the obtained light control layer is 1 to 100 μm. It is more preferably 1.5 to 10 μm. When a polarizing plate is used, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the cell thickness d in such a manner that the contrast is maximized. Further, when there are two polarizing plates, the polarizing axes of the respective polarizing plates can be adjusted, and the viewing angle or contrast can be adjusted in a good manner. Further, in order to increase the viewing angle, a retardation film can also be used. Examples of the spacer include a columnar spacer formed of glass particles, plastic particles, alumina particles, a photoresist material, or the like. Then, a sealant such as an epoxy thermosetting composition is screen-printed on the substrate in the form of a liquid crystal injection port, and the substrates are bonded to each other and heated to thermally 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, ODF method or the like. However, in the vacuum injection method, although the dropping trace does not occur, the problem of residual trace of the injection is more suitable for the display element manufactured by the ODF method in the invention of the present invention. In the manufacturing process of the liquid crystal display element of the ODF method, by using a dispenser on any of the backplane or the front panel, The epoxy-based photothermal heat is formed into a closed-loop embankment shape by using a sealant such as hardenability, and a predetermined amount of the liquid crystal composition is dropped under degassing, and then the front plate and the back plate are bonded to each other to manufacture a liquid crystal display element. The liquid crystal composition of the present invention can be suitably used because the dropping of the liquid crystal composition is carried out in the ODF step.

As a method of polymerizing the polymerizable compound, in order to obtain a good alignment property of the liquid crystal, it is preferred to have a moderate polymerization rate. Therefore, it is preferred to polymerize by direct or alternately or alternately irradiating active energy rays such as ultraviolet rays or electron beams. The method. When using ultraviolet light, a polarized light source or a non-polarized light source can be used. In addition, when the liquid crystal composition containing the polymerizable compound is sandwiched between the two substrates, the substrate on the irradiation surface side must have appropriate transparency to the active energy ray. Further, it is also possible to use a mask to modulate only a specific portion after light irradiation, and to change the alignment state of the unpolymerized portion by changing conditions such as an electric field, a magnetic field, or a temperature, and then irradiate the active energy ray so that the active energy ray is irradiated. The means of aggregation. In particular, in the case of ultraviolet light exposure, it is preferred to perform ultraviolet exposure while applying an alternating electric field to the liquid crystal composition containing the polymerizable compound. The applied alternating electric field is preferably an alternating current having a frequency of 10 Hz to 10 kHz, more preferably a frequency of 60 Hz to 10 kHz, and the voltage is selected depending on the desired pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display device of the transverse electric field type MVA mode, it is preferable to control the pretilt angle from 80 to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably within a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. Preferably, the polymerization is carried out at a temperature close to room temperature, i.e., typically at a temperature of from 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, as the wavelength of the ultraviolet ray to be irradiated, it is preferred to irradiate the ultraviolet ray which is not in the wavelength range of the absorption wavelength range of the liquid crystal composition, and it is preferred to use the ultraviolet ray to block the ultraviolet ray as needed. The intensity of the ultraviolet ray to be irradiated is preferably from 0.1 mW/cm ² to 100 W/cm ² , more preferably from 2 mW/cm ² to 50 W/cm ² . The energy of the ultraviolet ray to be irradiated can be suitably adjusted, and is preferably from 10 mJ/cm ² to 500 J/cm ² , more preferably from 100 mJ/cm ² to 200 J/cm ² . When the ultraviolet ray is irradiated, the intensity can also be changed. The time for irradiating the ultraviolet rays is appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, and is preferably from 10 seconds to 3600 seconds, more preferably from 10 seconds to 600 seconds.

The liquid crystal display element using the liquid crystal composition of the present invention can be used for suppressing high-speed reaction and display failure, and is particularly useful for a liquid crystal display element for active matrix driving, and is applicable to VA mode, PSVA mode, PSA mode, IPS ( In-plane switching mode, VA-IPS mode, FFS (Fringe Field Switching) mode or ECB mode liquid crystal display element.

Hereinafter, a preferred embodiment of the liquid crystal display 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 device including two substrates facing each other, a sealing material provided between the substrates, and a liquid crystal sealed in a closed region surrounded by the sealing material.

Specifically, a specific aspect of the liquid crystal display device is provided, and the TFT substrate 102 and the pixel electrode 103 are provided on the first substrate 100, and a back sheet of the passivation film 104 and the first alignment film 105 is provided thereon; On the second substrate 200, a black matrix 202, a color filter 203, and a planarizing film (covering surface) are provided. The layer 201 and the transparent electrode 204 are provided with a second alignment film 205 from above, a front plate facing the back plate, a sealing material 301 disposed between the substrates, and a closed area surrounded by the sealing material. The liquid crystal layer 303 is provided therein; and protrusions (columnar spacers) 302 and 304 are provided on the surface of the substrate on which the sealing material 301 is in contact.

The material of the first substrate or the second substrate is not particularly limited as long as it is substantially transparent, and glass, ceramics, plastic, or the like can be used. As the plastic substrate, cellulose derivatives such as cellulose, triacetyl cellulose, and diethyl phthalocyanine, polycycloolefin derivatives, polyethylene terephthalate, polyethylene naphthalate, and the like can be used. Polyester, polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyamidamine, polyphenylene Ethylene, polyacrylate, polymethyl methacrylate, polyether oxime, polyarylate, and inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, and the like.

Further, when a plastic substrate is used, it is preferable to provide a barrier film. The function of the barrier film is to lower the moisture permeability of the plastic substrate and 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, and vapor deposition or sputtering or chemical vapor deposition (CVD) is used. The film formed.

In the present invention, the first substrate or the second substrate may be the same material or different materials, 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. Also, if it is a plastic substrate, it is suitable It is preferably produced by a roll-to-roll method and is suitable for weight reduction or flexibility. In addition, in order to provide flatness and heat resistance, good results can be obtained by combining a plastic substrate and a glass substrate.

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

In the back sheet, the TFT layer 102 and the pixel electrode 103 are provided on the first substrate 100. These can be manufactured by the usual array steps. The passivation film 104 and the 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 a TFT, 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 has a function of aligning the liquid crystal, and a polymer material such as polyimine is usually used. An alignment agent solution made of a polymer material and a solvent is used in the coating liquid. Since the alignment film has the possibility of hindering the adhesion to the sealing material, the pattern is applied in the closed region. A printing method such as an offset printing method, a droplet discharge method such as inkjet is used for coating. The coated alignment agent solution is cured by crosslinking after evaporation of the solvent by temporary drying. Then, in order to exhibit the alignment function, alignment processing is performed.

The alignment process is usually performed by a rubbing method. The liquid crystal alignment ability is produced by unidirectional rubbing on a polymer film formed as described above by using a rubbing cloth made of fibers such as ruthenium.

Also, there is also the use of the optical alignment method. The photo-alignment method generates a aligning ability by irradiating a polarized light on an alignment film containing a photoreceptive organic material, and does not cause damage or dust of the substrate due to the rubbing method. Ai. As an example of the organic material of the photo-alignment method, there is a material containing a dichroic dye. As the dichroic dye, an alignment induction or isomerization reaction (for example, azobenzene) or a dimerization reaction of a molecule caused by a Weigert effect due to photochromism can be used (example: Cassia ruthenium), photocrosslinking reaction (eg diphenyl ketone group) or photodecomposition reaction (eg poly(fluorene imino group)) is the basis of photoreaction of the origin of liquid crystal alignment ability (hereinafter referred to as photo-alignment) Base). The applied alignment agent solution is obtained by evaporating a solvent by temporary drying, and by irradiating light having any deviation (polarization), an alignment film having an alignment ability in an arbitrary direction can be obtained.

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

The black matrix 202 is produced, for example, by a pigment dispersion method. Specifically, on the second substrate 200 provided with the barrier film 201, a colored resin liquid in which a black colorant for forming a black matrix is uniformly dispersed is applied to form a colored layer. Next, the colored layer is baked to be hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed by the mask pattern, development is performed to pattern the colored layer. Then, 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. At this time, a photoresist type pigment dispersion liquid is applied, and after prebaking, after exposure by a mask pattern, development is performed, and the colored layer is patterned. Then, 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. If the pigment dispersion method is taken as an example, A color resin liquid in which a pigment (for example, red) is uniformly dispersed is applied onto the second substrate 200, and after baking curing, a photoresist is applied thereon to perform prebaking. After the photoresist is exposed by the mask pattern, development is performed and patterned. The photoresist layer is then stripped and the (red) color filter 203 (203a) is completed by baking. The order of coloring is not particularly limited. Similarly, a green color filter 203 (203b) and a blue color filter 203 (203c) are formed.

The transparent electrode 204 is provided on the color filter 203 (the overcoat layer (201) for surface flattening is provided on the color filter 203 as needed). The transparent electrode 204 preferably has a high transmittance, and preferably has a small resistance. The transparent electrode 204 is formed of an oxide film of ITO or the like by a sputtering method or the like.

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

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

In the above, the above-mentioned back sheet and the front sheet used in the present invention are described in a specific aspect, but are not limited to the specific aspect in the present case, and the liquid crystal display element according to the desired aspect is freely available. change.

The shape of the columnar spacer is not particularly limited, and the horizontal cross section may have various shapes such as a circular shape, a polygonal shape such as a square shape, and the like, but it is preferable to consider a misalign margin during the process. To make the horizontal section a circular or regular polygon. Further, the shape of the protrusion is preferably a truncated cone or a truncated cone.

The material of the columnar spacer is as long as it is a sealing material or a seal The material in which the organic solvent or the liquid crystal used in the material is not dissolved is not particularly limited, and a synthetic resin (curable resin) is preferred from the viewpoint of processing and weight reduction. On the other hand, the protrusions may be provided on the sealing material interface on the first substrate by a method of lithography or a droplet discharge method. For such reasons, it is preferred to use a photocurable resin suitable for lithography or a droplet discharge method.

As an example, the case where the columnar spacer is obtained by the lithography method will be described. Fig. 2 is a view showing a step of exposing a pattern using a columnar spacer formed on a black matrix as a mask pattern.

A resin liquid for forming a columnar spacer (excluding 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 by the mask pattern 401, development is performed to pattern the resin layer. Then, the photoresist layer is peeled off, and the resin layer is baked to complete the columnar spacer (302, 0304 in Fig. 1).

The position at which the column spacers are formed can be positioned at a desired position by a mask pattern. Therefore, both the closed region of the liquid crystal display element and the outside of the closed region (the sealing material coating portion) can be simultaneously formed. Moreover, it is preferable to form a columnar spacer so that the quality of the closed region does not decrease, and it can be positioned above the black matrix. The columnar spacers thus produced by the lithography method are referred to as cylindrical spacers or photo spacers.

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

In this manner, after the columnar spacer is provided on the surface of the front plate which is the closed region, a sealing material (301 in FIG. 1) is applied to the sealing material contact surface of the back plate.

The material of the sealing material is not particularly limited, and a curable resin composition in which a polymerization initiator is added to an epoxy-based or acrylic-based photocurable, thermosetting, or photocurable 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 slit material having a monodisperse diameter is mixed, or 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 sealing coating width.

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

As a method of applying the sealing material, there is a printing method or a dispensing method, but it is preferable to use a dispensing method in which the amount of the sealing material used is small. The coating position of the sealing material is usually on a black matrix in order not to adversely affect the enclosed 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 a closed loop shape.

Closed-loop shape of the front plate coated with the aforementioned sealing material (closed Area), drop the liquid crystal. A dispenser is usually used. The amount of the dropped liquid crystal is substantially the same as the volume obtained by multiplying the height of the columnar spacer and the sealed coated 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 cell bonding step, the amount of liquid crystal dropped may be appropriately adjusted, and the liquid crystal dropping position may be dispersed.

Next, the sealing material is applied, and the back sheet is bonded to the front plate on which the liquid crystal has been dropped. Specifically, the front plate and the back plate are adsorbed by 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, and is disposed between the sealing material and the other. The position (distance) at which the side substrates do not meet. In this state, the internal pressure is reduced. After the completion of the pressure reduction, the position of the two substrates (alignment operation) was adjusted while confirming the bonding position of the front plate and the back plate. If the adjustment of the bonding position is completed, the substrate is brought close to the position where the sealing material on the front plate is in contact with the backing plate. In this state, the inert gas is filled in the system, and the pressure is returned to the normal pressure while gradually opening the pressure. At this time, the front plate and the back plate are bonded together by atmospheric pressure, and a cell gap is formed at the height position of the column spacer. In this state, the sealing material is irradiated with ultraviolet rays to cure the sealing material to form a liquid crystal cell. Then, depending on the case, a heating step is applied to promote hardening of the sealing material. In order to enhance the adhesion of the sealing material or to improve the reliability of the electrical characteristics, a heating step is applied.

[Examples]

The invention is illustrated in more detail below by the examples, but the invention is not limited by the examples. In addition, "%" in the composition of the following examples and comparative examples means "% by mass".

In the examples, the measured characteristics are as follows.

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

Δn: refractive index anisotropy at 298 K (alias: birefringence)

Δε: dielectric anisotropy at 295K

η: viscosity at 293K (mPa‧s)

Γ1: Rotational viscosity at 295K (mPa‧s)

VHR: Voltage holding ratio (%) at 333K at a frequency of 60 Hz and an applied voltage of 4V

<Evaluation of afterimage>

The image sticking evaluation of the liquid crystal display element is performed by displaying the predetermined fixed pattern for six weeks in the display area, and when the full-screen uniform display is performed, the degree of the residual image of the fixed pattern is visually recognized by the following four levels.

◎: no afterimage

○: There are very few afterimages, but they are also tolerable.

△: There is an afterimage, which is unacceptable

×: There is an afterimage, quite bad

<Evaluation of Volatile (Contamination of Manufacturing Equipment)>

0.15 kg of liquid crystal composition was added to a special container of a vacuum stirring defoaming mixer having a capacity of 0.33 L, and the vacuum stirring defoaming mixer was operated while rotating at a revolution speed of 20 S ^{-1 and} a rotation speed of 10.0 s ^-1 while degassing to The foaming of the liquid crystal material was visually observed up to 15 kPa. The volatility is classified into the following four degrees in accordance with the time from the start of the operation of the mixer to the start of foaming.

◎: It takes 3 minutes or more until foaming. The possibility of contamination of the device due to volatilization is low.

○: It is 1 minute or more and less than 3 minutes until foaming. There are concerns about slight device contamination caused by volatilization.

△: 30 seconds or more and less than 1 minute until foaming. Device contamination due to volatilization.

×: It is within 30 seconds until foaming. There are concerns about major equipment contamination caused by volatilization.

<Evaluation of process suitability>

In the ODF process, a fixed-volume metering pump is used, and the liquid crystal is dropped at 50 pL every time for 100,000 times. The following four levels are used to evaluate "0 to 100 times, 101 to 200 times, 201 to 300 times, ‧ ‧ ‧ The change in the amount of liquid crystal at the time of dropping 100 times from 99901 to 100000 times.

◎: The change is extremely small (the liquid crystal display element can be stably manufactured)

○: There is a slight change, but it is also tolerable.

△: There is a change, which is unacceptable (the yield is deteriorated due to unevenness)

×: There is a change, it is quite bad (liquid crystal leakage or vacuum bubble occurs)

<Evaluation of Solubility at Low Temperature>

The solubility evaluation at low temperature was carried out by modulating the liquid crystal composition, and weighing 0.5 g of the liquid crystal composition in a 1 mL sample vial. In the temperature-controlled test tank, the following "-25 ° C (1 hour hold) → Temperature rise (0.2 ° C / min) → 0 ° C (1 hour hold) → temperature rise (0.2 ° C / min) → 25 ° C (1 hour hold) → temperature drop (-0.2 ° C / min) → 0 ° C (1 hour hold )→cooling (-0.2 ° C / min) -25 ° C" As a single cycle, the temperature change was continuously applied, and the occurrence of precipitates from the liquid crystal composition was visually observed, and the following four grades were evaluated.

◎: No precipitate was observed for 480 hours or longer.

○: No precipitate was observed for 240 hours or longer.

△: Precipitates were observed within 120 hours.

×: Precipitates were observed within 60 hours.

(Example 1)

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

(Comparative Example 1)

The composition shown below which does not contain the compound represented by the above formula (ii) was prepared. The physical property values of the composition of Comparative Example 1 are shown in Table 2.

The composition of Comparative Example 1 which does not contain the compound represented by the above formula (ii) has a low Tni and a small Δε as compared with the composition of Example 1 containing the compound represented by the above formula (ii).

(Example 2)

The composition shown below was prepared. The physical property values of the composition of Example 2 are shown in Table 3.

(Example 3)

The composition shown below was prepared. The composition of Example 3 is shown in Table 4. The physical value of the object.

(Example 4)

The composition shown below was prepared. The physical property values of the composition of Example 4 are shown in Table 5.

(Example 5)

The composition shown below was prepared. The physical property values of the composition of Example 5 are shown in Table 6.

(Example 6)

The composition shown below was prepared. The composition of Example 6 is shown in Table 7. The physical value of the object.

(Example 7)

The composition shown below was prepared. The physical property values of the composition of Example 7 are shown in Table 8.

(Example 8)

The composition shown below was prepared. The physical property values of the composition of Example 8 are shown in Table 9.

(Example 9)

The composition shown below was prepared. The physical property values of the composition of Example 9 are shown in Table 10.

(Embodiment 10)

The composition shown below was prepared. The group of Example 10 is shown in Table 11. The physical property value of the adult.

(Example 11)

The composition shown below was prepared. The physical property values of the composition of Example 11 are shown in Table 12.

(Embodiment 12)

The composition shown below was prepared. The physical property values of the composition of Example 12 are shown in Table 13.

(Example 13)

The composition shown below was prepared. The physical property values of the composition of Example 13 are shown in Table 14.

It is possible to add, omit, replace, or otherwise change the configuration of the present invention in the above-described embodiments, and combinations thereof, and the like, without departing from the spirit and scope of the invention. Further, the present invention is not limited by the embodiments, and is only limited by the scope of the claims.

Tables V to 17 show the initial VHR of the liquid crystal composition described in each example, VHR after heating (150 ° C, 1 hour), image retention, evaluation of volatility, evaluation of process suitability, and dissolution at low temperature. Evaluation of sex.

[Industrial availability]

It can provide a liquid crystal phase with a wide temperature range, low viscosity, good solubility at low temperature, high specific resistance or voltage retention, stability to heat or light, and poor display of residual images or dripping marks. A liquid crystal composition having a positive Δ ε of a liquid crystal display element excellent in display quality and a liquid crystal display element using the liquid crystal composition is produced.

Claims (7)

A liquid crystal composition containing one or more compounds represented by the following formula (i), containing one or more compounds represented by the following formula (ii), and containing one or A compound represented by any one of the following formula (ii-1) to (ii-4), which is a compound represented by the formula (ii), contains the following formula (XI-1), The following formula (2.2) and the following formula (1.3) contain at least one compound selected from the group consisting of the following formula (10.1), the following formula (11.1), and the following formula (15.1), and the formula (i) And the total content of the compound represented by any one of the formula (ii) is 13% by mass or more and 28% by mass or less based on the total amount of the composition. In the formula, R ⁱ¹ , R ⁱ² and R ⁱⁱ¹ each independently represent an alkyl group having 1 to 8 carbon atoms, but ^one of the alkyl groups of R ⁱⁱ¹ or two or more non-adjacent-CH ₂ - systems Each of them may be independently substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, and the hydrogen atom in the alkyl group of R ⁱⁱ¹ may be a fluorine atom or Substituting a chlorine atom, X ⁱ¹ , X ⁱ² , X ⁱ³ , X ⁱ⁴ , X ⁱⁱ¹ and X ⁱⁱ² each independently represent a hydrogen atom or a fluorine atom, and A ⁱⁱ¹ , A ⁱⁱ² and A ⁱⁱ³ each independently represent trans-1,4- a 1,4-phenyl group in which a cyclohexyl group or a hydrogen atom may be substituted by a fluorine atom or a chlorine atom; in the formula (ii-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms and 2 to 5 carbon atoms; An alkenyl group or an alkoxy group having 1 to 4 carbon atoms; in the formula (ii-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or 1 carbon atom; In the formula (ii-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; In (ii-4), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; Wherein R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; The liquid crystal composition of claim 1, wherein X ⁱ² of the formula (i) is a fluorine atom. The liquid crystal composition of claim 1, which contains a compound represented by the following formula (L), In the formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups may independently be -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 each independently represent : (a) 1,4-cyclohexylene, one -CH ₂ - or two or more -CH ₂ - which are not adjacent in this group may be substituted by -O-; and (b) 1,4- a phenyl group, one of -CH= or two or more contiguous in the group -CH= group in the group consisting of -N=substitution, the above-mentioned group (a), group (b) At least one hydrogen atom in each of them may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent 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 is plural, they may be the same or different, and when OL is 2 or 3 and B ^L3 is plural, they may be the same or different; Compounds of the formula (i), (1.3), (2.2), (10.1), (11.1) and (15.1) Outside. A liquid crystal composition according to claim 1 which contains a compound represented by the following formula (M), In the formula, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-contiguous -CH ₂ - groups of the alkyl group may 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 selected from: (d) 1, 4 - a cyclohexyl group, one -CH ₂ - or two or more -CH ₂ - which are not adjacent in this group may be substituted by -O- or -S-; and (e) 1,4-phenylene , one of -CH= or two or more non-contiguous in the group -CH= group in the group consisting of -N=substitution, in the above group (d), base (e) At least one hydrogen atom may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent 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-, when PM is 2, 3 or 4 and K ^M1 is present in plural, The same or different, when PM is 2, 3 or 4 and the C ^M2 is plural, they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano , trifluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; except, formula (ii) and formula (XI-1) Except for the compounds shown. A liquid crystal display element using the liquid crystal composition as in the first aspect of the patent application. A liquid crystal display element for IPS mode, OCB mode, ECB mode, VA mode, VA-IPS mode or FFS mode, which uses the liquid crystal composition as in the first aspect of the patent application. A liquid crystal display using a liquid crystal display element as in claim 5 or 6.