TWI510601B - 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 exhibiting a positive value of dielectric anisotropy (??) which is useful as a liquid crystal display material, and a liquid crystal display element using the same.

The liquid crystal display element is used in various measuring apparatuses, such as watches and clocks, computers, instrument panels for automobiles, word processors, electronic notebooks, printers, computers, televisions, watches, advertisement boards, and the like. Typical 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), and an IPS (in-plane switching) type. The liquid crystal composition used for such liquid crystal display elements is required to be stable to external stimuli of moisture, air, heat, light, etc., and to display liquid crystal phases in a wide temperature range centered on room temperature as much as possible. Low viscosity and low driving voltage. Further, the liquid crystal composition is composed of several types to several tens of kinds of compounds in order to make dielectric constant anisotropy (Δε) and refractive index anisotropy (Δn) as optimum values for each display element. .

The vertical alignment (VA) type display uses a liquid crystal composition having a negative Δ ε, and a horizontal alignment such as a TN type, an STN type, or an IPS (in-plane switching) type. The type display uses a liquid crystal composition in which Δε is positive. Further, it has been reported that a liquid crystal composition in which Δε is positive when no voltage is applied is vertically aligned, and a transverse electric field is applied to perform display, so that the necessity of a liquid crystal composition having a positive Δ ε is more For improvement. On the other hand, low voltage driving, high-speed response, and a wide operating temperature range are required in all driving methods. That is, it is required that Δε is positive and the absolute value is large, the viscosity (η) is small, and the high nematic phase-isotropic liquid phase transition temperature (Tni). In addition, in order to set Δn×d which is a product of Δn and the cell gap (d) within a predetermined value, it is necessary to set Δn of the liquid crystal composition in a suitable range in accordance with the cell gap. Further, since high-speed responsiveness is considered to be important in the case where a liquid crystal display element is applied to a television or the like, a liquid crystal composition having a small rotational viscosity (γ1) is required.

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

On the other hand, the use of the liquid crystal display element has been expanded, and it has been observed that the method of use and the method of manufacture vary greatly. In order to cope with such changes, it is required to optimize characteristics other than the basic physical property values known in the past. In other words, a liquid crystal display element using a liquid crystal composition has been widely used in a VA type, an IPS type, or the like, and a display element of an ultra-large size capable of realizing 50 or more types has been used. With the increase in the size of the substrate, the method of injecting the substrate into the liquid crystal composition has also changed, and the conventional vacuum injection method has been replaced by the ODF (One Drop Fill) method. However, the problem that the drip marks when the liquid crystal composition is dropped onto the substrate causes the display level to be lowered is surfaced. Further, in the step of producing a liquid crystal display element by the ODF method, it is necessary to drip the optimum amount in accordance with the size of the liquid crystal display element. When the deviation of the amount of dripping is greatly different from the optimum value, the balance between the refractive index of the liquid crystal display element designed in advance and the driving electric field is disintegrated, and display defects such as spot occurrence and poor contrast may occur. In particular, small liquid crystal display elements, which are mostly used in recent popular smart phones, are difficult to deviate from the optimum value because the most appropriate liquid crystal drop amount is small. Control is within a certain range. Therefore, in order to improve the manufacturing yield of the liquid crystal display element, it is required that the liquid crystal composition, for example, has a small influence on the pressure change and the rushing force in the dripping device which is generated when the liquid crystal is dropped, and can continuously and stably drip over a long period of time.

In this way, the liquid crystal composition used for driving a liquid crystal display element by an active matrix driven by a TFT element or the like is required to be developed in order to maintain the characteristics and performance required for a liquid crystal display element such as high-speed response performance, and the like. In addition to the characteristics of the high specific resistance value, the high voltage holding ratio, and the stability against external stimuli such as light and heat, a method of manufacturing a liquid crystal display element is also considered.

[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 composition having a positive Δ ε which can produce a liquid crystal phase having a wide temperature range with good yield, low viscosity, good solubility at low temperatures, specific resistance and voltage holding ratio. A liquid crystal display element which is high in heat and light, has poor display defects such as afterimages and dripping marks, is excellent in display level, and a liquid crystal display element using the liquid crystal composition.

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

[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). And does not contain a compound having a chlorine atom as a substituent,

(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 - each independently may be -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, the hydrogen atom in the alkyl group may also be substituted by a fluorine atom, and n represents 1, 2 or 3, X ⁱ¹ , X ⁱ² , X ⁱ³ and X ⁱ⁴ each independently represent a hydrogen atom or a fluorine atom, A ⁱⁱ¹ represents a trans-1,4-cyclohexylene group, or a hydrogen atom may be substituted by a fluorine atom, and n represents a phenyl group. In the case of 2 or 3, A ⁱⁱ¹ may be the same or different, Z ⁱⁱ¹ represents a single bond, -CH=CH-, -C≡C-, -CH ₂ CH ₂ -, -CF ₂ O- or -OCF ₂ -, n means 2 or 3, Z ⁱⁱ¹ may be the same or different).

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

[3] The liquid crystal composition according to [1] or [2], wherein at least one of R ⁱ¹ and R ^{i2 in} the above formula (i) is a propyl group.

[4] The liquid crystal composition according to any one of [1] to [3] wherein n in the above formula (ii) is 2, and at least one of A ⁱⁱ¹ is a trans-1,4-stretch. Cyclohexyl.

[5] The liquid crystal composition according to any one of the above [1] to [4] wherein Z ⁱⁱ¹ in the above formula (ii) is a single bond.

[6] The liquid crystal composition according to any one of the above [1] to [5], which has two or more compounds represented by the above formula (ii).

[7] The liquid crystal composition according to any one of the above [1] to [6], 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 of -CH ₂ - which are not adjacent to each other may be independently -CH=CH- , -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently represented by the group below group selected in the group of: (a) 1,4- cyclohexylene (which is present in a group -CH ₂ - or not adjacent two or more of -CH ₂ - may be substituted with -O-) and (b) 1,4-phenylene (one -CH= or two or more adjacent -CH= which may be present in the group may also be substituted with -N=)

One or two or more hydrogen atoms in the above-mentioned group (a) and the group (b) may be independently substituted with a cyano group or a fluorine 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-, where OL is 2 or 3 and L ^{L2 is} present in plural, they may be the same or different, OL is 2 or 3 and B ^{L3 is} present in plural In the case of the same, they may be the same or different. However, the compound represented by the formula (i) is excluded).

[8] The liquid crystal composition according to any one of the above [1] to [7], which comprises a compound represented by the following formula (M).

(wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - groups may be independently -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of: (d) 1,4- cyclohexylene (which is present in a group -CH ₂ - or not adjacent two or more of -CH ₂ - may be substituted with -O- or -S-) and (e 1,4-phenylene (one -CH= or two or more adjacent -CH= which may be present in the group may also be substituted with -N=)

One or two or more hydrogen atoms in the above-mentioned group (d) and the group (e) may be independently substituted with a cyano group or a fluorine 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-, PM 2 ^Where 3, 4 or 4 and K ^{M1 are} plural, they may be the same or different, PM is 2, 3 or 4 and C ^{M2 is} present in plural, they may be the same or different, X ^M1 and X ^M3 each independently represents a hydrogen atom or a fluorine atom, and X ^M2 represents a hydrogen atom, a fluorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2, 2-Trifluoroethyl. However, except for the compound represented by the general formula (ii)

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

[10] A liquid crystal display device according to any one of the above [1] to [8], wherein the liquid crystal composition according to any one of the above [1] to [8] is used in the IPS mode, the OCB mode, the ECB mode, the VA mode, the VA-IPS mode, or the FFS mode. Made.

[11] A liquid crystal display comprising the liquid crystal display element according to the above [8] or [9].

The liquid crystal composition having the positive dielectric anisotropy of the present invention has a lower viscosity than the conventional one, and has a low solubility at a low temperature, and the specific resistance and voltage holding ratio are extremely small due to heat and light. . Therefore, the liquid crystal composition of the present invention has high practicability (applicability) in a liquid crystal product, and a high-speed response can be achieved by using a liquid crystal display element such as an IPS type or an FFS type using the liquid crystal composition. Also, since the liquid crystal composition of the present invention can be stably stabilized even after undergoing the manufacturing steps of the liquid crystal display element Since the performance is exhibited and the display failure due to the manufacturing step can be suppressed, and the liquid crystal display element can be manufactured with high yield, it is very useful.

100‧‧‧1st substrate

102‧‧‧TFT layer

103‧‧‧pixel electrode

104‧‧‧passivation film

105‧‧‧1st alignment film

200‧‧‧2nd substrate

201‧‧‧Flating film (protective 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‧‧‧protrusion (columnar spacer)

303‧‧‧Liquid layer

304‧‧‧protrusion (columnar spacer)

401‧‧‧ mask pattern

402‧‧‧ resin layer

L‧‧‧Light

Figure 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 "front panel".

2 is a view showing an exposure processing step 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 contains one or more compounds represented by the following formula (ii), and does not contain A compound having a chlorine atom as a substituent.

(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 of -CH ₂ - which are not adjacent to each other may be independently -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, the hydrogen atom in the alkyl group may also be substituted by a fluorine atom, and n represents 1, 2 or 3, X ⁱ¹ , X ⁱ² , X ⁱ³ and X ⁱ⁴ each independently represent a hydrogen atom or a fluorine atom, A ⁱⁱ¹ represents a trans-1,4-cyclohexylene group, or a hydrogen atom may be substituted by a fluorine atom, and n represents a phenyl group. In the case of 2 or 3, A ⁱⁱ¹ may be the same or different, Z ⁱⁱ¹ represents a single bond, -CH=CH-, -C≡C-, -CH ₂ CH ₂ -, -CF ₂ O- or -OCF ₂ -, n means 2 or 3, Z ⁱⁱ¹ can be the same or different)

<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 preferably a linear alkyl group having 1 to 8 carbon atoms or a linear alkenyl group having 2 to 8 carbon atoms, and having 2 to 5 carbon atoms. The linear alkyl group or the linear alkenyl group having 2 to 5 carbon atoms is preferred, and a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group or the following structure is preferred.

(where the ring structure is bonded at the right end)

In the case where the improvement of the response speed is emphasized, it is preferable that an alkenyl group is preferable, and in the case of reliability such as a voltage holding ratio at the time of becoming a liquid crystal composition, an alkyl group is preferable. ^Preferably , at least one of R ⁱ¹ and R ⁱ² is a propyl group, and the other is preferably an ethyl group or a propyl group.

The compound represented by the above formula (i) is 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 kind of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types.

The content of the compound represented by the above formula (i-1) is preferably from 1 to 40% by mass, preferably from 2 to 20% by mass, based on the total mass of the liquid crystal composition of the present invention, and from 4 to 15% by mass. It is especially good.

The compound represented by the formula (i-1) is preferably a compound represented by the formula (i-1-1.1) to the formula (i-1-1.9), because R ⁱ¹ and R in the above formula (i) ^It is preferred that at least one of ⁱ² is a propyl group, and therefore a compound represented by the formula (i-1-1.1) or the formula (i-1-1.3) is preferred.

The type of the compound which can be combined is not particularly limited, and one to three kinds of these compounds are preferably contained, and one type to two types are further preferable. In addition, since the molecular weight distribution of the selected compound is broad, it is effective for solubility. Therefore, for example, one type of compound derived from the formula (i-1-1.1) and (i-1-1.2) is selected from the formula ( 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 A compound of one of the compounds represented by (i-1-1.8) and (i-1-1.9) is preferably combined as appropriate, and a combination of (i-1-1.1) and (i-1-1.4) (i-1-1.1) alone, (i-1-1.3) alone is preferred.

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, and from 2 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 3 to 10% by mass is preferred, and 4 to 7% by mass is particularly preferred.

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, and from 2 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 4 to 15% by mass is preferred, and 6 to 12% by mass is particularly preferred.

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, and from 2 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 4 to 10% by mass is particularly preferred.

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

<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; and a linear alkyl group having 2 to 5 carbon atoms or A linear alkenyl group having 2 to 5 carbon atoms is preferred, and an ethyl group, a propyl group, a butyl group, a pentyl group or the following structures are preferred, and an ethyl group, a propyl group or a pentyl group is particularly preferred.

(where the ring structure is bonded at the right end)

In the case where the improvement of the response speed is emphasized, it is preferable that an alkenyl group is preferable, and in the case of reliability such as a voltage holding ratio at the time of becoming a liquid crystal composition, an alkyl group is preferable.

In the above formula (ii), n is preferably 1, 2 or 3, and 2 is preferred. Further, n is 2 and at least one of A ⁱⁱ¹ is preferably a trans-1,4-cyclohexylene group.

In the above formula (ii), Z ⁱⁱ¹ is preferably a single bond.

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

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

The content of the compound represented by the formula (ii-1) is preferably from 3 to 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. 5 to 25 mass% is preferred, and 7 to 20 mass% is particularly preferred.

The compound represented by the formula (ii-1) is specifically a compound represented by the formula (ii-1.1) to the formula (ii-1.4), and particularly preferably contains the formula (ii-1.2) and/or The compound represented by the formula (ii-1.4) is preferred.

The content of the compound represented by the formula (ii-1.2) is considered The solubility at low temperature, the transfer temperature, the electrical reliability, and the like are preferably from 1 to 20% by mass, preferably from 2 to 17% by mass, and from 3 to 15% by mass, based on the total mass of the liquid crystal composition of the present invention. Preferably, 5 to 12% by mass is particularly preferred.

The content of the compound represented by the formula (ii-1.4) 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 low-temperature solubility, transfer temperature, electrical reliability, and the like. 2 to 10% by mass is preferred, and 3 to 8% by mass is particularly preferred.

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

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

The content of the compound represented by the formula (ii-2) is 5% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The following is preferable, and 9 mass% or more and 27 mass% or less are preferable, and 12 mass% or more and 24 mass% or less are more preferable, and 12 mass% or more and 20 mass% or less are particularly preferable.

Further, the compound represented by the formula (ii-2) is specifically a compound represented by the formula (ii-2.1) to the formula (ii-2.4), and particularly preferably contains the formula (ii-2.2). And/or a compound represented by the formula (ii-2.4) is preferred.

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

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

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

Further, the compound represented by the formula (ii-3) is preferably a compound represented by the formula (ii-3.1) to the formula (ii-3.6), and the formula (ii-3.1) and/or the formula (ii-3.3). The compound represented is preferred.

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

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

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

The content of the compound represented by the formula (ii-4) is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 6% by mass or more based on the total mass of the liquid crystal composition of the present invention. good. Further, in consideration of low-temperature solubility, transfer temperature, electrical reliability, etc., the maximum ratio is preferably limited to 20% by mass or less, and 16% by mass or less is further. Preferably, 12% by mass or less is preferable, and 10% by mass or less is particularly preferable.

Further, the compound represented by the formula (ii-4) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (ii-4.1) to the formula (ii-4.4). Among them, a compound represented by the formula (ii-4.2) is particularly preferred.

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

(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)

The kind of the compound which can be combined is not particularly limited, and can be used in combination according to desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Compound used The type of the present invention is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Alternatively, in still another embodiment of the present invention, there are three or more types.

The content of the compound represented by the formula (ii-5) is preferably 2.5% by mass or more and 25% by mass or less, and 8 % by mass or more, in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The mass% or less is preferably 10 mass% or less and 20 mass% or less is more preferably 12 mass% or more and 15 mass% or less.

Further, the compound represented by the formula (ii-5) is preferably a compound represented by the formula (ii-5.1) to the formula (ii-5.4), and a compound represented by the formula (ii-5.2) is preferred.

Further, the compound represented by the above formula (ii) is preferably a compound represented by the following formula (ii-6).

(wherein R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

The compound which can be combined is not particularly limited, and may be appropriately combined according to the embodiment in consideration of low-temperature solubility, 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 combined, and in still another embodiment, three or more types are combined.

The content of the compound represented by the formula (ii-6) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The following is preferable, and 3 mass% or more and 20 mass% or less are preferable, and 4 mass% or more and 20 mass% or less are more preferable, and 6 mass% or more and 15 mass% or less are further more preferable, and 9 mass% or more and 12 mass% or less are more preferable. It is especially good.

Further, the compound represented by the formula (ii-6) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (ii-6.1) to the formula (ii-6.4). Among them, a compound represented by the formula (ii-6.2) to the formula (ii-6.4) is preferred, and a compound represented by the formula (ii-6.2) is preferred.

In the examples, as described later, since the liquid crystal composition of the present invention does not contain a compound having a chlorine atom as a substituent, Tni is high and reliable as compared with a liquid crystal composition containing a compound having a chlorine atom as a substituent. Improvements, as well as viscosity and other physical properties have also improved.

The combination of (i) and (ii) is preferably a compound represented by the combination formula (i-1-1.3), formula (ii-1.2) and formula (ii-1.4), and the combination formula (i-1-1.1) And a compound represented by the formula (ii-1.2) is preferred.

In the case of combining the compounds represented by formula (i-1-1.3), formula (ii-1.2) and formula (ii-1.4), the total content of such compounds is relative to the total mass of the liquid crystal composition of the present invention. The content is preferably 10% by mass or more and 30% by mass or less, preferably 15% by mass or more and 25% by mass or less, more preferably 17% by mass or more and 23% by mass or less, and particularly preferably 18% by mass or more and 22% by mass or less.

In the case of the compound of the formula (i-1-1.1) and the formula (ii-1.2), the total content of these compounds is 10% by mass or more based on the total mass of the liquid crystal composition of the present invention. 25 mass% or less is preferable, 11 mass% or more and 20 mass% or less are preferable, 13 mass% or more and 19 mass% or less are preferable, and 11 mass% or more and 20 mass% or less are preferable, and 10 mass% is preferable. The above 25 mass% or less is preferred.

The liquid crystal composition of the present invention may contain one or more 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 of -CH ₂ - which are not adjacent to each other may be independently -CH=CH- , -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently represented by the group below group selected in the group of: (a) 1,4- cyclohexylene (which is present in a group -CH ₂ - or not adjacent two or more of -CH ₂ - may be substituted with -O-) and (b) 1,4-phenylene (one -CH= or two or more adjacent -CH= which may be present in the group may also be substituted with -N=)

One or two or more hydrogen atoms in the above-mentioned group (a) and the group (b) may be independently substituted with a cyano group or a fluorine 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-, where OL is 2 or 3 and L ^{L2 is} present in plural, they may be the same or different, OL is 2 or 3 and B ^{L3 is} present in plural In the case of the same, they may be the same or different. However, except for the compound represented by the general formula (i)

The types of compounds that can be combined are not particularly limited, and The combination is suitably used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or 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, 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 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 low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like are appropriately 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. Or in another embodiment of the present invention, the content is from 10 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 40 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 50 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 55 to 95% by mass. Furthermore, in 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 the present invention In another embodiment, the content is 70 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 75 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 80 to 95% by mass.

Further, 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. Further, in another embodiment of the present invention, the content is 1 to 85%. Furthermore, in another embodiment of the present invention, the content is 1 to 75%. Furthermore, in 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 another embodiment of the present invention, the content is 1 to 35%. Furthermore, in another embodiment of the present invention, the content is 1 to 25%.

In the case where it is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, the above lower limit value is high and the upper limit value is preferably high. In addition, when it is necessary to improve the Tni of the liquid crystal composition of the present invention and the liquid crystal composition having good temperature stability, the above lower limit value is high and the upper limit value is preferably high. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to lower the above-described lower limit value and lower the upper limit value.

R ^L1 and R ^L2 have a linear alkyl group having 1 to 5 carbon atoms and a linear carbon number of 1 to 4 in the case where the ring structure of the bond is phenyl (aromatic) (or The above a) alkoxy group and an alkenyl group having 4 to 5 carbon atoms are preferred, and the ring structure of the bond is cyclohexane, pyran 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 used. The alkenyl group having 2 to 5 atoms is preferred.

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 A ¹¹ and A ¹² are each independently Represents 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4-phenylene)

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or 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, 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.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like are appropriately adjusted.

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. Or in another embodiment of the present invention, the content is 15 to 75 the amount%. Further, in another embodiment of the present invention, the content is from 18 to 75% by mass. Furthermore, in 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 another embodiment of the present invention, the content is 42 to 75% by mass. Furthermore, in 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 another embodiment of the present invention, the content is 60 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 65 to 75% by mass.

Furthermore, 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 another embodiment of the present invention, the content is from 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, 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 another embodiment of the present invention, the content is 3 to 30% by mass.

In the case where it is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, the above lower limit value is high and the upper limit value is preferably high. Further, it is necessary to improve the liquid crystal composition having a good Tni and good temperature stability in the liquid crystal composition of the present invention. The above lower limit value is moderately moderate and the upper limit value is preferably moderately moderate. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to lower the above-described lower limit value and lower the upper limit value.

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 kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or 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, there are four types. Furthermore, in another embodiment of this invention, they are 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 low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, The required properties such as the dielectric anisotropy are appropriately adjusted.

The content of the above compound is, for example, an embodiment of the present invention, and the content is 3 to 70% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 15 to 70% by mass. Moreover, in another embodiment of the present invention The content is 18 to 70% by mass. Furthermore, in 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 another embodiment of the present invention, the content is 35 to 70% by mass. Furthermore, in 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 another embodiment of the present invention, the content is 53 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 56 to 70% by mass.

The content of the above compound is, for example, in the form of the present invention, the content of the liquid crystal composition is from 3 to 70% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is from 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, 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 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 26% by mass.

In the case where it is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, the above lower limit value is high and the upper limit value is preferably high. Further, it is necessary to improve the liquid crystal composition having a good Tni and good temperature stability in the liquid crystal composition of the present invention. The above lower limit value is moderately moderate and the upper limit value is preferably moderately moderate. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to lower the above-described lower limit value and lower the upper limit value.

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

(wherein R ¹² 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 low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, and residue. The performance required for shadow, dielectric anisotropy, etc., is appropriately adjusted.

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. Or in another embodiment of the present invention, the content is 4 to 60% by mass. Further, in another embodiment of the present invention, the content is 7 to 60% by mass. Furthermore, in 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 another embodiment of the present invention, the content is 17 to 60% by mass. Furthermore, in 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 the present invention In another embodiment, the content is from 30 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 32 to 60% by mass. Furthermore, in 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 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 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 consisting of the compounds represented by the formulae (1.1) to (1.3), and the formula (1.2) or the formula (1.3) The compound represented is preferred, and especially the compound represented by the formula (1.3) is preferred.

In the case where the compounds represented by the formula (1.2) or the formula (1.3) are used singly, the effect of improving the response speed can be improved by increasing the content of the compound represented by the formula (1.2), and the compound represented by the formula (1.3) Compound The content is preferably within the range shown below because a liquid crystal composition having a fast response speed and high electrical and optical reliability can be obtained.

The compound represented by the formula (1.3) is preferably contained in an amount of 2 to 35% by mass based on the total mass of the liquid crystal composition of the present invention, preferably 2 to 25% by mass, more preferably 3 to 15% by mass or less. good. The content of the compound represented by the formula (1.3) is, for example, 3 to 7% by mass in one embodiment of the present invention. Further, in another embodiment of the present invention, the content is 8 to 12% by mass.

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

(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 kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Further, in 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 low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, and residue. The performance required for shadow, dielectric anisotropy, etc., is appropriately adjusted.

The content of the compound represented by the above formula (I-1-2) is preferably 2 to 60% by mass, more preferably 3 to 55% by mass, based on the total mass of the liquid crystal composition of the present invention, and 3 to 48% by weight. The mass % is particularly good. The content of the compound represented by the formula (I-1-2) is, for example, 3 to 7% by mass in one embodiment of the present invention. Furthermore, in another embodiment of the present invention, the content is 40 to 48% 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 formula (2.1) to the formula (2.4), and the formula (2.2) to the formula (2.4) The compound represented is preferred. In particular, the compound represented by the formula (2.2) is preferred because it particularly improves the response speed of the liquid crystal composition of the present invention. Further, when Tni is required to be higher than the response speed, 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 set to be 20% or more in order to improve the solubility at a low temperature, which is not preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.2) is preferably 5 to 55% by mass, more preferably 15 to 50% by mass, based on the total mass of the liquid crystal composition of the present invention. 25 to 48% by mass is preferred, 30 to 48% by mass is preferred, and 40 to 48% by mass is particularly preferred.

In the liquid crystal composition of the present invention, the formula represented by the formula (2.4) The content of the compound is preferably 1 to 20% by mass, more preferably 2 to 15% by mass, and particularly preferably 3 to 8% by mass based on the total mass of the liquid crystal composition of the present invention.

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

The content of the compound represented by the formula (2.5) is preferably adjusted according to the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and is contained with respect to the total mass of the liquid crystal composition of the present invention. The compound is preferably 11% by mass or more, more preferably 15% by mass, further preferably 23% by mass, more preferably 26% by mass or more, and particularly preferably 28% by mass or more.

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

(wherein R ¹³ and R ¹⁴ 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, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in this hair In another embodiment of the invention, there are two types. Further, in 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 low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, The required properties such as the dielectric anisotropy are appropriately 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. Or in another embodiment of the present invention, the content is 4 to 60% by mass. Further, in another embodiment of the present invention, the content is 15 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 another embodiment of the present invention, the content is 35 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 38 to 60% by mass. Furthermore, in 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 another embodiment of the present invention, the content is 47 to 60% by mass. Furthermore, in 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. Further, 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 another embodiment of the present invention, the foregoing The amount 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 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 formula (3.1) to the formula (3.4), and the formula (3.1), the formula (3.3) or the formula ( 3.4) The compound represented is preferred. In particular, the compound represented by the formula (3.2) is preferred because it particularly improves the response speed of the liquid crystal composition of the present invention. Further, when Tni which is higher than the response speed is required, a compound represented by the formula (3.3) or the formula (3.4) is preferably used. The content of the compound represented by the formula (3.3) and the formula (3.4) is set to be 20% or more in order to improve the solubility at a low temperature, which is not preferable.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (3.3) is preferably 2% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention. The preferred content can be listed For example, 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 and 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, 3% by mass or more and 26% by mass or less, and 3% by mass or more 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, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Further, in 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-3) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, The required properties such as the dielectric anisotropy are appropriately adjusted.

Relative to the total mass of the liquid crystal composition of the present invention, the foregoing The content of the compound is, for example, 3% by mass as an embodiment of the present invention. Or in another embodiment of the present invention, the content is 4 to 60% by mass. Further, in another embodiment of the present invention, the content is 15 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 another embodiment of the present invention, the content is 35 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 38 to 60% by mass. Furthermore, in 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 another embodiment of the present invention, the content is 47 to 60% by mass. Furthermore, in 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 the form 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. Further, 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 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 another embodiment of the present invention, the content is 3 to 5% by mass.

In the case of paying attention to the solubility of low temperature, if the content is set more, the effect is higher. Conversely, if the response speed is set, the setting is less. Some of these contents are more effective. Further, in the case of improving the characteristics of the drip mark and the afterimage, it is preferable to set the content in the middle.

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

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. % or more and 30% by mass or less are preferable, and 8 mass% or more and 30 mass% or less are preferable, and 10 mass% or more and 30 mass% or less are preferable, and 12 mass% or more and 30 mass% or less are preferable, and 14 mass% or more is preferable. 30% by mass or less is preferable, 16% by mass or more and 30% by mass or less is preferable, 18% by mass or more and 25% by mass or less is preferable, 20% by mass or more and 24% by mass or less is preferable, and 22% by mass or more and 23% by mass are preferable. % below is especially good.

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, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or 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 low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, The required properties such as the dielectric anisotropy are appropriately adjusted.

The content of the above compound is, for example, 3 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 5 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 6 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 50% by mass. Furthermore, in 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 from 12 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 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 another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 40 to 50% by mass.

Furthermore, the content of the above compound is, for example, in the form of one aspect of the present invention, relative to the total mass of the liquid crystal composition 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 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 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 another embodiment of the present invention, the content is 3 to 5% by mass.

In the case where a high birefringence is obtained, if the content is set more, the effect is higher. Conversely, if the content is set to a high Tni, the effect is high. Further, in the case of improving the characteristics of the drip mark and the afterimage, it is preferable to set the content in the middle.

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

The content of the compound represented by the formula (5.4) is preferably 1 to 30% by mass, more preferably 2 to 20% by mass, and most preferably 3 to 10% by mass based on the total mass of the liquid crystal composition of the present invention. .

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, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or 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-5) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, The required properties such as the dielectric anisotropy are appropriately adjusted.

The content of the above compound is, for example, 1 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 8 to 50% by mass. Furthermore, in 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 another implementation of the present invention The content in the form 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 another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, 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 another embodiment of the present invention, the content is 1 to 35%. Furthermore, in another embodiment of the present invention, the content is 1 to 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 another embodiment of the present invention, the content is 1 to 10%. Furthermore, in another embodiment of the present invention, the content is 1 to 5%.

In the case where the solubility in low temperature is emphasized, the effect is high if a certain amount is set. On the contrary, if the content is set to a small value, the effect is high. Further, in the case of improving the characteristics of the drip mark and the afterimage, it is preferable to set 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), and the formula (6.3), the formula (6.4) and the formula ( The compound represented by 6.6) is preferred.

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 based on the total mass of the liquid crystal composition of the present invention, and preferably 4% by mass or more and 30% by mass or less. 5 mass% or more and 30 mass% or less are preferable, and 6 mass% or more and 30 mass% or less are preferable, and 9% by mass or more and 30 mass% or less is preferable, and 10 mass% or more and 30 mass% or less are preferable.

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

The content of the compound represented by the formula (6.7) to the formula (6.8) is preferably adjusted according to the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., with respect to the liquid crystal composition of the present invention. The total mass is preferably 2% by mass or more, more preferably 3% by mass or more, further preferably 4% by mass or more, more preferably 5% by mass or more, and still more preferably 7% by mass or more. Very good.

Further, the compound represented by the formula (I) is derived from the formula (I-6) The compound selected from the group of compounds indicated is preferred.

(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 X ¹¹ and X ¹² are each independently Represents a fluorine atom or a hydrogen atom, and any of X ¹¹ or X ¹² is a fluorine atom)

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

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

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

(wherein R ¹¹ and R ¹² 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 represents a fluorine atom; Or hydrogen 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 based on the total mass of the liquid crystal composition of the present invention, and preferably 2% by mass or more and 30% by mass or less. 3 mass% or more and 30 mass% or less are preferable, and 4 mass% or more and 30 mass% or less are preferable, and 6 mass% or more and 30 mass% or less are preferable, and 8 mass% or more and 30 mass% or less are preferable, and 10 is preferable. The mass% or more is 30% by mass or less, preferably 12% by mass or more and 30% by mass or less, 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 most preferably 21% by mass or less. The above 22% by mass or less is particularly preferable.

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

Further, the compound represented by the formula (I) is preferably a compound selected from the group consisting of the 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 kind of the compound which can be combined is not particularly limited, and it is preferable to combine one to three kinds depending on the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (I-8) can be such as low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, and dielectric anisotropy. The required performance is preferably 5% by mass or more and 65% by mass or less based on the total mass of the liquid crystal composition of the present invention, preferably 10% by mass or more and 65% by mass or less, and preferably 15% by mass or more and 65% by mass or less. Preferably, it is preferably 20% by mass or more and 65% by 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, and more preferably 35% by mass or more and 65% by mass or less. 40% by mass or more and 65% by mass or less is preferable, and 45% by mass or more and 60% by mass or less is preferable, and 50% by mass or more and 58% by mass or less is preferable, and 55% by mass or more and 56% by mass or less are particularly preferable.

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

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

(R ²¹ and R ²² 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-cyclohexylene group. 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, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or 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 another embodiment of this invention, they are 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 low-temperature solubility, transfer temperature, and electrical properties. The performance required for reliability, birefringence, process suitability, drip marks, afterimage, and dielectric anisotropy are appropriately adjusted.

The content of the above compound is, for example, 3 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 7 to 50% by mass. Furthermore, in 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 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 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 another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in 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, 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. Further, in 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 from 3 to 35% 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 another embodiment of the present invention, the content is 3 to 10% by mass. Furthermore, in another aspect of the present invention In the embodiment, the content is 3 to 5% by mass.

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

(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 adjusted in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is 4% by mass or more and 24% by mass or less. Preferably, it is preferably 8 mass% or more and 18 mass% or less, and more preferably 12 mass% or more and 14 mass% or less.

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

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

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

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of this invention, they are 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 low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, The required properties such as the dielectric anisotropy are appropriately adjusted.

The content of the above compound is, for example, 3 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 7 to 50% by mass. Furthermore, in 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 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 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 another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, the content of the above compound is, for example, 3 to 50 in one embodiment of the present invention, relative to the total mass of the liquid crystal composition of the present invention. quality%. Further, in 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 from 3 to 35% 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 another embodiment of the present invention, the content is 3 to 10% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 5% by mass.

In addition, the compound represented by the formula (II-2) is preferably a compound represented by the formula (11.1) to the formula (11.3), and a compound represented by the formula (11.1) or the formula (11.2) is preferred. The compound represented by the formula (11.1) is particularly preferred.

The compound represented by the formula (11.1), the compound represented by the formula (11.2), or the formula (11.2) may be contained in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 11.1) Both the compound represented by the formula (11.2) and the compound represented by the formula (11.1) to the formula (11.3) may be contained. The content of the compound represented by the formula (11.1) or the formula (11.2) is preferably from 1 to 40% by mass, more preferably from 1 to 20% by mass, based on the total mass of the liquid crystal composition of the present invention, and from 1 to 15 The mass % is particularly good.

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

Further, the content of the compound represented by the formula (11.2) is preferably 1 to 10% by mass, more preferably 1 to 8% by mass, and 1 to 4% by mass based on the total mass of the liquid crystal composition of the present invention. Very good.

When both the compound represented by the formula (11.1) and the compound represented by the formula (11.2) are contained, the total mass of the compounds is 5% by mass or more and 45 mass based on the total mass of the liquid crystal composition of the present invention. % or less is preferable, and 5 mass% or more and 40 mass% or less are preferable, and 5 mass% or more and 35 mass% or less are more preferable, and 5 mass% or more and 30 mass% or less are especially preferable.

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

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

The type of the compound 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 properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (II-3) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Appropriate adjustments are made to the properties required for process suitability, drip marks, afterimage, and dielectric anisotropy. The content of the compound is, for example, 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention. A more preferable content is, for example, 5 to 45 mass%, 8 to 45 mass%, 11 to 45 mass%, 14 to 45 mass%, 17 to 45 mass%, 20 to 45 mass%, and 23 to 45 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 25 mass%, 2 to 20 masses %, 2 to 15% by mass, and 2 to 10% by mass.

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

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

The content of the compound represented by the formula (12.1) or the formula (12.2) is preferably 3% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 5% by mass or more and 40% by mass or less. Preferably, it is preferably 7 mass% or more and 40 mass% or less, more preferably 9 mass% or more and 40 mass% or less, and more preferably 11 mass% or more and 40 mass% or less. The mass% or more is 40% by mass or less, 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 based on the total mass of the liquid crystal composition of the present invention, and preferably 5% by mass or more and 40% by mass or less. 8% by mass or more and 40% by mass or less is more preferably 10% by mass or more and 40% by mass or less, more preferably 12% by mass or more and 40% by mass or less, and more preferably 15% by mass or more and 40% by mass or less, and 17 mass%. More than 30% by mass or less is more preferably, and 19% by mass or more and 25% by mass or less is particularly preferable. 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 two compounds is 15% by mass or more and 45 mass based on the total mass of the liquid crystal composition of the present invention. % or less is preferable, and 19% by mass or more and 45% by mass or less is preferable, and 24% by mass or more and 40% by mass or less is more preferable, and 30% by mass or more and 35% by mass or less is particularly preferable.

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

(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 properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. .

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

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

The content of the compound represented by the formula (13.3) is preferably from 1 to 10% by mass, more preferably from 2 to 8% by mass, and particularly preferably from 3 to 7% by mass based on the total mass of the liquid crystal composition of the present invention. .

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

(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)

It is preferable to contain only one of these compounds, or two or more of them, and it is preferable to mix them suitably according to the required performance. The type of the compound which can be combined is not particularly limited, and it is preferable to contain one or two kinds of such compounds from the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is especially good to contain one to three kinds.

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

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

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

(R ³¹ and R ³² 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 and the birefringence. It is preferably 6 mass% or more and 20 mass% or less, and more preferably 8 mass% or more and 15 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, and preferably 2 to 20, based on the total solubility of the liquid crystal composition of the present invention in consideration of the required solubility and birefringence. The mass % is preferable, and it is more preferably 3 to 15% by mass, and particularly preferably 4 to 12% 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 properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more and 23% by mass or less. It is more preferably 6 mass% or more and 18 mass% or less, and more preferably 10 mass% or more and 13 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 properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 1 to 25% by mass. It is preferably 2 to 20% by mass, more preferably 3 to 15% by mass, and particularly preferably 4 to 12% by mass.

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

The content of the compound represented by the formula (17.3) is preferably 1 to 25% by mass, and preferably 2 to 2% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of the required solubility and birefringence. 20% by mass is preferable, and 3 to 15% by mass is more preferable, and 4 to 12% by mass is particularly preferable.

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

(wherein R ⁵¹ and R ⁵² 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 A ⁵¹ and A ⁵² are each independently 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, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, there are three types. Furthermore, in 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 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 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 another embodiment of the present invention, the content is 17 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 18 to 40% by mass. Furthermore, in another embodiment of the present 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 an embodiment of the present invention, the content of the compound is the total mass of the liquid crystal composition of the present invention. 2 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 30% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 20% by mass. 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 from 2 to 5% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

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

(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 X ⁵¹ and X ⁵² are each 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 contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is more preferably 2% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass or less.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (20.2) is 1 mass in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or more is preferably 20% by mass or less, preferably 2% by mass or more and 15% by mass or less, more preferably 3% by mass or more and 10% by mass or less, and particularly preferably 3% by mass or more and 7% by mass or less.

Further, the compound represented by the formula (V-1) 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)

Including with respect to the total mass of the liquid crystal composition of the present invention The compound represented by the formula (V-1-2) 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, and more preferably 3% by mass or more and 10% by mass or less. .

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

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

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

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

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

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

(wherein R ⁵¹ and R ⁵² 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 ⁵¹ and X ⁵² are each independently Represents a fluorine atom or a hydrogen atom)

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of this invention, they are 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 from 4 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. Furthermore, in 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 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 an 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 another embodiment of the present invention, the content of the compound is 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 20% by mass. 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 from 2 to 5% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

In the case where the liquid crystal composition of the present invention is expected to have a high Tni embodiment, the content of the compound represented by the formula (V-2) is preferably more. In the case where the low viscosity embodiment is desired, the content is preferably less.

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

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

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

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

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

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

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

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

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in this hair In another embodiment of the invention, there are two types. Furthermore, in another embodiment of the present invention, it is three or more.

The compound represented by the formula (V-3) is preferably 2% by mass or more and 16% by mass or less, and 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 more preferably 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 may also contain 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 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 each independently represent a group selected from the group consisting of: (d) 1,4- cyclohexylene (which is present in a group -CH ₂ - or not adjacent two or more of -CH ₂ - may be substituted with -O- or -S-) and (e 1,4-phenylene (one -CH= or two or more adjacent -CH= which may be present in the group may also be substituted with -N=)

One or two or more hydrogen atoms in the above-mentioned group (d) and the group (e) may be independently substituted with a cyano group or a fluorine 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-, PM 2 ^Where 3, 4 or 4 and K ^{M1 are} plural, they may be the same or different, PM is 2, 3 or 4 and C ^{M2 is} present in plural, they may be the same or different, X ^M1 and X ^M3 each independently represents a hydrogen atom or a fluorine atom, and X ^M2 represents a hydrogen atom, a fluorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2, 2-Trifluoroethyl. However, except for the compound represented by the general formula (ii)

The kind of the compound which can be combined is not particularly limited, and can be used in combination according to desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in In another embodiment of the present invention, there are six types. Furthermore, in another embodiment of the present invention, it is seven or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (M) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like are appropriately 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 from 30 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 40 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 45 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 50 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 55 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 60 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 65 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is 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.

Further, with respect to the total mass of the liquid crystal composition of the present invention, The content of the above compound is, for example, 1 to 95% by mass in one embodiment of the present invention. Further, 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.

In the case where it is necessary to reduce the liquid crystal composition having a high viscosity and a fast response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. In addition, it is necessary to increase the Tni and the liquid crystal composition having good temperature stability in the liquid crystal composition of the present invention, and it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

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

In the case where the compound represented by the formula (M) is required to have chemical stability of the liquid crystal composition, it is preferred that the molecule does not contain a chlorine atom. Further, the compound containing a chlorine atom in the liquid crystal composition is preferably 5% or less, more preferably 3% or less, more preferably 1% or less, and most preferably 0.5% or less, and substantially no content is preferable. The fact that it does not substantially contain a system means that a compound containing only an undesired chlorine atom, such as a compound formed as an impurity at the time of production of a compound, is mixed into the liquid crystal composition.

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

(wherein R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ⁸¹ to X ⁸⁵ each independently represent a hydrogen atom or a fluorine atom; An atom, Y ⁸ represents a fluorine atom or -OCF ₃ . However, except for the compound represented by the general formula (ii)

The kind of the compound which can be combined is not particularly limited, and can be used in combination according to desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, it is three or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (VIII) must be in accordance with low-temperature solubility, transfer temperature, and electricity. The performance required for gas reliability, birefringence, process suitability, drip marks, afterimage, and dielectric anisotropy are appropriately adjusted.

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. Further, for example, in another embodiment of the present invention, the content of the compound is 4 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 5 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 14 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 21 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 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, as another embodiment of the present invention, the foregoing The content of the compound is 2 to 30% by mass. For example, in still another embodiment of the present invention, the content of the compound is 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. According to 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.

In the case where it is necessary to reduce the liquid crystal composition having a high viscosity and a fast response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. In addition, it is necessary to increase the Tni and the liquid crystal composition having good temperature stability in the liquid crystal composition of the present invention, and it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

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

(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)

The types of compounds that can be combined are not particularly limited, and can be based on low-temperature solubility, transfer temperature, electrical reliability, and double The desired properties such as the refractive index are used in combination. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of this invention, they are two or more types.

Further, the compound represented by the formula (VIII-1) is specifically a compound represented by the formula (26.1) to the formula (26.4), and the compound represented by the formula (26.1) or the formula (26.2) is preferably Preferably, the compound represented by the formula (26.1) or the formula (26.2) is further preferably, and the compound represented by the formula (26.2) is particularly preferred.

The content of the compound represented by the formula (26.1) is 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Preferably, 3 to 20% by mass is preferred, and 4 to 10% by mass is particularly preferred.

The content of the compound represented by the formula (26.2) is 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Preferably, 3 to 20% by mass is preferred, 4 to 10% by mass is preferred, and 4 to 7% by mass is particularly preferred.

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

(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)

The kind of the compound which can be combined is not particularly limited, and can be used in combination according to desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of this invention, they are two or more types.

Further, the compound represented by the formula (VIII-3) is specifically a compound represented by the formula (26.11) to the formula (26.14), and the compound represented by the formula (26.11) or the formula (26.12) is preferably Preferably, the compound represented by the formula (26.12) is further preferred.

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

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ⁹¹ and X ⁹² each independently represent a hydrogen atom or a fluorine atom. An atom, Y ⁹ represents a fluorine atom, or -OCF ₃ , and U ⁹ represents a single bond, -COO- or -CF ₂ O-. However, the compound represented by the formula (ii) is excluded)

The kind of the compound which can be combined is not particularly limited, and can be used in combination according to desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, there are three types. Further, in 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.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (IX) must be in accordance with low-temperature solubility, transfer temperature, and electrical properties. The performance required for reliability, birefringence, process suitability, drip marks, afterimage, and dielectric anisotropy are appropriately 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, in still another embodiment of the present invention, the content of the compound is from 17 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 70% by mass. For example, 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 from 45 to 70% by mass.

Further, with respect to the total mass of the liquid crystal composition of the present invention, The content of the above compound is, for example, 3 to 70% by mass as an embodiment of the present invention. Furthermore, in another embodiment of the present invention, the content of the compound is from 3 to 60% by mass. For example, 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. Still another embodiment of the present invention is 25% by mass. According to still another embodiment of the present invention, the content of the compound is from 3 to 20% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 15% by mass. According to still another embodiment of the present invention, the content of the compound is from 3 to 10% by mass.

In the case where it is necessary to reduce the liquid crystal composition having a high viscosity and a fast response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. In addition, in the case where it is necessary to increase the Tni of the liquid crystal composition of the present invention and the liquid crystal composition which is less likely to cause image sticking, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

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

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or -OCF ₃ . However, except for the compound represented by the formula (ii)

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

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

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

The kind of the compound which can be combined is not particularly limited, and can be used in combination according to desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Compound used The type of the present invention is, for example, one embodiment of the present invention. Or in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, it is three or more.

The content of the compound represented by the formula (IX-1-1) has an appropriate upper limit and lower limit in view of the low temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-1-1) is preferably from 1 to 40% by mass, more preferably from 2 to 20% by mass, based on the total mass of the liquid crystal composition of the present invention. ~15% by mass is particularly good.

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. In the embodiment, it is 1 to 30% by mass, and in still another embodiment, it is 1 to 25% by mass.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.3) is 1 to 1 in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 30% by mass is preferred, 2 to 20% by mass is preferred, 3 to 10% by mass is preferred, and 4 to 7% by mass is particularly preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.5) is 1 to 1 in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 30% by mass is preferred, 2 to 20% by mass is preferred, 3 to 10% by mass is preferred, and 4 to 7% by mass is particularly preferred.

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

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

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

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

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

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. An atom, Y ⁹ represents a fluorine atom or -OCF ₃ . However, except for the compound represented by the formula (ii)

The type of the compound which can be combined is not limited, and it can be appropriately combined and used in accordance with the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, one type is used, in another embodiment, two types, in still another embodiment, three types, and in still another embodiment, four types, and again In another embodiment, five types are combined, 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).

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

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

The content of the compound represented by the formula (IX-2-1) has a preferable upper limit value according to the embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. lower limit.

For example, in an embodiment of the present invention, relative to the present The total mass of the liquid crystal composition of the invention is such that the content of the above compound is from 1 to 40% by mass. 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, and 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 further In another embodiment, the content of the compound is from 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, and in another embodiment, the content of the compound is from 1 to 35 mass. In still another embodiment, the content of the compound is 1 to 30% by mass, and in still another embodiment, the content of the compound is 1 to 25% by mass, and still another embodiment. The content of the compound is from 1 to 22% by mass, and in still another embodiment, the content of the compound is from 1 to 20% by mass, and in still another embodiment, the content of the compound is In another embodiment, the content of the compound is 1 to 7 mass%, and in still another embodiment, the content of the compound is 1 to 5 mass%.

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

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

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

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

The content of the compound represented by the formula (IX-2-2) has upper limit and lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. value. 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. quality%,.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass, and in another embodiment, the content of the compound is from 1 to 35 mass. In still another embodiment, the content of the compound is 1 to 30% by mass, and in still another embodiment, the content of the compound is 1 to 25% by mass, and still another embodiment. Medium for the aforementioned compounds The content is 1 to 22% by mass, and 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 compound represented by the formula (31.1) to the formula (31.4), and a compound represented by the formula (31.2) to the formula (31.4) is preferred. The compound represented by the formula (31.2) is more preferably.

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

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

The type of the compound which can be combined is not limited, and it can be appropriately combined and used in accordance with the embodiment in consideration of low-temperature solubility, 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. In another embodiment, there are three types, and in still another embodiment, four or more types are used.

The content of the compound represented by the formula (IX-2-5) has upper limit and lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. value. For example, in one embodiment of the present invention, the content of the compound represented by the above formula (IX-2-5) is preferably from 5 to 45% by mass, based on the total mass of the liquid crystal composition of the present invention, 10~ 40% by mass is preferred, and 15 to 35% by mass is particularly preferred.

In the case where it is necessary to reduce the liquid crystal composition having a high viscosity and a fast response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. In addition, in the case where it is necessary to increase the Tni of the liquid crystal composition of the present invention and the liquid crystal composition which is less likely to cause image sticking, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

Further, the compound represented by the formula (IX-2-5) is preferably a compound represented by the formula (34.1) to the formula (34.7), and represented by the formula (34.2), the formula (34.3) and the formula (34.5). The compound is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (34.2) is 1 to 1 in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 30% by mass is preferred, 3 to 20% by mass is preferred, 5 to 15% by mass is preferred, and 8 to 12% by mass is particularly preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (34.3) is 1 to 1 in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 30% by mass is preferred, 3 to 20% by mass is preferred, 5 to 15% by mass is preferred, and 8 to 12% by mass is particularly preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (34.5) is considered in view of low-temperature solubility, transfer temperature, and electrical availability. The reactivity is preferably 1 to 30% by mass, 2 to 20% by mass, more preferably 3 to 10% by mass, and 4 to 7% by mass, based on the total mass of the liquid crystal composition of the present invention. Very good.

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; X ⁹¹ and X ⁹² each independently represent a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or -OCF ₃ )

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

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

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

The content of the compound represented by the formula (IX-3-1), in view of low-temperature solubility, transfer temperature, electrical reliability, etc., relative to the present invention The total mass of the liquid crystal composition is preferably 3% by mass or more and 30% by mass or less, preferably 7% by mass or more and 30% by mass or less, more preferably 13% by mass or more and 20% by mass or less, and further preferably 15% by mass or more. 18% by mass or less is particularly preferred.

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

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, -OCF ₃ , Q ¹⁰ represents a single bond or -CF ₂ O-, and R ¹⁰ represents a carbon atom number of 1 to 5; An alkyl group, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of A ¹⁰¹ and A ^{102 is} independently, 1,4-cyclohexylene, 1,4-phenylene, or As shown in the statement.

The hydrogen atom on the 1,4-phenylene group may also be substituted with a fluorine atom. However, except for the compound represented by the above formula (ii)

The compound which can be combined is not particularly limited, and may be appropriately combined according to the embodiment in consideration of low-temperature solubility, 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, there are five or more types.

The content of the compound represented by the formula (X) has an upper limit value and a lower limit value in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 yet another In the embodiment, the content of the compound is 8 to 45% by mass, and in still another embodiment, the content of the compound is 9 to 45% by mass, and in still another embodiment, the content of the compound is 11 In still another embodiment, the content of the compound is from 12 to 45% by mass. 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 from 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, and in another embodiment, the content of the compound is 2 to 35% by mass, In still another 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, and in still another embodiment, the compound is In 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. In still another embodiment, the content of the compound is 2 to 6% by mass, and in still another embodiment, the content of the compound is 2 to 3% by mass.

In the case where it is necessary to reduce the liquid crystal composition having a high viscosity and a fast response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in the case where a liquid crystal composition which is less likely to cause image sticking is necessary, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the driving voltage, the above lower limit value is slightly increased. A slight increase in the upper limit is better.

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 alkoxy group having 1 to 4 carbon atoms; Base, except for the compound represented by the formula (ii)

The compound which can be combined is not particularly limited, and may be appropriately combined according to the embodiment in consideration of low-temperature solubility, 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, there are five or more types.

The content of the compound represented by the formula (X-1) has an upper limit value and a lower limit value in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 another embodiment, the content of the compound is 7 to 40% by mass, and 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 It is 9 to 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, and in another embodiment, the content of the compound is 2 to 30% by mass, In still another 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, and in still another embodiment, the compound is 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 compound is from 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).

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

The compound which can be combined is not particularly limited, and may be appropriately combined according to the embodiment in consideration of low-temperature solubility, 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, it is four or more.

The content of the compound represented by the formula (X-1-1) has upper limit and lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. value. 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, and in still another embodiment, The content of the compound 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 3 to 30% by mass, and in another embodiment, the content of the compound is 3 to 20% by mass, In still another embodiment, the content of the compound is 3 to 13% by mass, and in still another embodiment, the content of the compound is 3 to 10%. In still another embodiment, the content of the compound is from 3 to 7% by mass.

In addition, the compound represented by the formula (X-1-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (36.1) to the formula (36.4), particularly It is preferred to contain a compound represented by the formula (36.1) and/or the formula (36.2).

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

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

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

In addition, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (37.1) to the formula (37.4), particularly It is preferred to contain a compound represented by 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 1 to 1 in terms of the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. 20% by mass is preferred, 2 to 15% by mass is preferred, and 3 to 10% by mass is preferred. 4~7 mass% is especially good.

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, -OCF ₃ , and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; Or an alkoxy group having 1 to 4 carbon atoms, except for the compound represented by the formula (ii)

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

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

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

The compound which can be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

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

In addition, the compound represented by the formula (X-2-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (39.1) to the formula (39.4), particularly It is preferred to contain a compound represented by the formula (39.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (39.2) is preferably 1% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 2% by mass and 25% by mass. Take The following is preferable, and 3 mass% or more and 20 mass% or less are preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3 mass% or more and 10 mass% or less are more preferable, and 4 mass% or more and 10 mass% or less are more preferable. Better.

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

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

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

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

In addition, the compound represented by the formula (X-2-2) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (40.1) to the formula (40.4), particularly It is preferred to contain a compound represented by the formula (40.2).

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

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

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

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 3% by mass or more based on the total mass of the liquid crystal composition of the present invention. Further preferred. also The maximum ratio is preferably 10% by mass or less, more preferably 8% by mass or less, more preferably 6% by mass or less, and 4% by mass or less, in view of low-temperature solubility, transfer temperature, electrical reliability, and the like. Very good.

In addition, the compound represented by the formula (X-3-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (41.1) to the formula (41.4), particularly It is preferred to contain a compound represented by the formula (41.2).

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

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

The compound which can be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

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

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

The compound which can be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

The content of the compound represented by the formula (X-4-1) is 2% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 5% by mass or more and 17% by mass or less, more preferably 10% by mass or more and 15% by mass or less, and further preferably 10% by mass or more and 13% by mass or less.

In addition, the compound represented by the formula (X-4-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (42.1) to the formula (42.4), particularly In terms of containing formula (42.2) The compounds shown are preferred.

In addition, 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).

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

The compound which can be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

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

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

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-4-3).

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

The compound which can be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

The content of the compound represented by the formula (X-4-3) is 2% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 5% by mass or more and 17% by mass or less, more preferably 10% by mass or more and 15% by mass or less, and further 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 a compound represented by the formula (42.21) to the formula (42.24), particularly A compound represented by the formula (42.22) is preferred.

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

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

The compound which can be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

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

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

The compound which can be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

Furthermore, the general formula used in the liquid crystal composition of the present invention The compound represented by the formula (43.1) to the formula (43.4) is preferably a compound represented by the formula (43.1), and particularly preferably a compound represented by the formula (43.2).

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

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

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

The content of the compound represented by the formula (X-6) has an upper limit value and a lower limit value in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 still another 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 compound is from 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and from 1 to 20% by mass in another embodiment. In still another embodiment, it is 1 to 13% by mass, and in still another embodiment, it is 1 to 10% by mass.

In addition, the compound represented by the formula (X-6) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (44.1) to the formula (44.4), and particularly preferably A compound represented by the formula (44.1) and/or the formula (44.2) is preferred.

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

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

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

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

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, and in still another embodiment, The content of the compound 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, and in another embodiment, the content of the compound is 4 to 20% 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 10% by mass, and in still another embodiment, the compound is The content is 4 to 7 mass%, and in still another embodiment, it is 3 mass%.

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

Further, 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, and at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, and 2 to 5 carbon atoms; Alkenyl or alkoxy having 1 to 4 carbon atoms, Y ¹¹ representing a fluorine atom or -OCF ₃ )

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

The content of the compound represented by the formula (XI) has an upper limit value and a lower limit value in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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, and in still another embodiment, The content of the compound is from 9 to 30% by mass, and in still another embodiment, the content of the compound is from 10 to 30% by mass, and in still another embodiment, the content of the compound is from 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 aforementioned compound The content is 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, and in another embodiment, the content of the compound is 2 to 25% by mass, In still another embodiment, the content of the compound is 2 to 20% by mass, and in still another embodiment, the content of the compound is 2 to 15% by mass, and in still another embodiment, the compound is The content of the compound is 2 to 10% by mass, and in still another embodiment, the content of the compound is 2 to 5% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small interstitial space gap, it is preferable to make the content of the compound represented by the general formula (XI) slightly larger. When it is used for a liquid crystal display element having a small driving voltage, it is preferable to make the content of the compound represented by the general formula (XI) slightly larger. Further, in the case of being used for a liquid crystal display element used in a low-temperature environment, it is preferable to make the content of the compound represented by the general formula (XI) slightly smaller. In the case of being used for a liquid crystal composition of a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the general formula (XI) slightly smaller.

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 may be appropriately combined according to the embodiment in consideration of low-temperature solubility, 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 combined, and in still another embodiment, three or more types are combined.

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

In addition, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (45.1) to the formula (45.4), and particularly preferably The compound represented by the formula (45.2) to the formula (45.4) is preferred, and the compound represented by the formula (45.2) or the formula (45.4) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.2) is 1 to 1 in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 25 mass% is preferable, 2-20 mass% is preferable, 3-15 mass% is further preferable, 4-10 mass% is preferable, and 4-7 mass% is especially preferable.

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 alkoxy group having 1 to 4 carbon atoms; a group, Y ¹² represents a fluorine atom or -OCF ₃ . However, except for the compound represented by the formula (ii)

The compound which can be combined is not particularly limited, and it is preferably one to three or more kinds in combination of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and it is preferred to combine one to four or more.

In addition, 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 in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

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

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

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

(wherein R 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 in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one or two or more kinds, and preferably one to three or more. .

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

In addition, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (47.1) to the formula (47.4), and particularly preferably Formula (47.2) to The compound represented by (47.4) is preferred.

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

(wherein, X ¹³¹ to X ¹³⁵ 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 alkoxy group having 1 to 4 carbon atoms; a group, Y ¹³ represents a fluorine atom or -OCF ₃ . However, except for the compound represented by the formula (ii)

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

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

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, and in still another embodiment, The content of the compound 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 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, and in another embodiment, the content of the compound is 2 to 25% by mass, In still another embodiment, the content of the compound is 2 to 20% by mass, and in still another embodiment, the content of the compound is 2 to 15% by mass, and in still another embodiment, the compound is The content of the compound is 2 to 10% by mass, and in still another embodiment, the content of the compound is 2 to 5% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small interstitial space gap, the compound represented by the general formula (XIII) is used. The content of the substance is slightly more suitable. When it is used for a liquid crystal display element having a small driving voltage, it is preferable to make the content of the compound represented by the general formula (XIII) slightly larger. Further, in the case of being used for a liquid crystal display element used in a low-temperature environment, it is preferable to make the content of the compound represented by the general formula (XIII) slightly smaller. In the case of being used for a liquid crystal composition of a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the general formula (XIII) slightly smaller.

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

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

The compound represented by the formula (XIII-1) is preferably 1 to 25% by mass, more preferably 3 to 25% by mass, even more preferably 5 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. Further preferably, it is particularly preferably contained in an amount of 10 to 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), and a compound represented by the formula (48.2) is preferred.

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

(wherein R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

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

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

Furthermore, the compound represented by the formula (XIII-2) is a formula The compound represented by the formula (49.1) to the formula (49.4) is preferred, and the compound represented by the formula (49.1) and/or the formula (49.2) is preferred.

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

(wherein 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 kinds of these compounds.

The compound represented by the formula (XIII-3) is preferably 2 to 20% by mass, more preferably 4 to 20% by mass, even more preferably 9 to 17% by mass, based on the total mass of the liquid crystal composition of the present invention. More preferably, it is particularly good in containing 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), and a compound represented by the formula (50.1) or the formula (50.2) is preferred.

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

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ¹⁴¹ to X ¹⁴⁴ each independently represent a fluorine atom or hydrogen. Atom, Y ¹⁴ represents a fluorine atom, or -OCF ₃ , Q ¹⁴ represents a single bond, -COO- or -CF ₂ O-, and m ¹⁴ is 0 or 1. Except for the compound represented by the formula (ii))

There are no restrictions on the types of compounds that can be combined. Consider The solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, and the like can be appropriately combined in the 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, there are five types. Alternatively, in still another embodiment of the present invention, it is six or more.

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

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, and in still another embodiment, The content of the compound is from 12 to 40% by mass, and in still another embodiment, 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, and in another embodiment, the content of the compound is from 3 to 35% by mass, In still another 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, and in still another embodiment, the compound is The content of the compound is from 3 to 20% by mass, and 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, it is preferable to make the content of the compound represented by the general formula (XIV) slightly larger. Further, in the case of being used for a liquid crystal composition of a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the general formula (XIV) slightly smaller.

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 or -OCF ₃ )

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

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

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms)

The content of the compound represented by the formula (XIV-1-2) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 3% by mass or more and 13% by mass or less, more 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-1-2) is specifically a compound represented by the formula (52.1) to the formula (52.4), and particularly preferably a compound represented by the formula (52.4). It is better.

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 hydrogen. An atom, Y ¹⁴ represents a fluorine atom, or -OCF ₃ . However, except for the compound represented by the general formula (ii)

The type of the compound which can be combined is not limited, and may be appropriately combined according to the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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, there are five or more types.

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

For example, in an embodiment of the present invention, the content of the compound is 3 to 40 with respect to the total mass of the liquid crystal composition of the present invention. In another embodiment, the content of the compound is 7 to 40% by mass, and in still another embodiment, the content of the compound is 8 to 40% by mass, and in still another embodiment, the content is The content of the compound is 10 to 40% by mass, and in still another embodiment, the content of the compound is 11 to 40% by mass, and in still another embodiment, the content of the compound is 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, and in another embodiment, the content of the compound is from 3 to 35% by mass, 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% by mass, and in still another embodiment, the compound is The content of the compound is 3 to 15% by mass, and in still another embodiment, the content of the compound is 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, it is preferable to make the content of the compound represented by the general formula (XIV-2) slightly larger. Further, in the case of being used for a liquid crystal composition of a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the general formula (XIV-2) slightly smaller.

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

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

The content of the compound represented by the formula (XIV-2-1) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 3% by mass or more and 13% by mass or less, more 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 a compound represented by the formula (53.1) to the formula (53.4), and particularly preferably a compound represented by the formula (53.4) It is better.

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

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

The type of the compound which can be combined is not limited, and may be appropriately combined according to the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 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 or more types.

The content of the compound represented by the formula (XIV-2-4) has upper limit and lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. value.

For example, in one embodiment of the present invention, the content of the compound is 2 to 35 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, The content of the compound is 10 to 35% by mass, and in still another embodiment, the content of the compound is 18 to 35% by mass, and in still another embodiment, the content of the compound is 21 to 35% by mass. . In still another embodiment, the content of the compound is 22 to 35 mass%. In still another embodiment, 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 mass%, and in another embodiment, the content of the compound is 2 to 30 mass%, 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 to 20% by mass, and in still another embodiment, the content of the compound is 2 to 15% by mass, and in still another embodiment, The content of the aforementioned 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, it is preferable to make the content of the compound represented by the general formula (XIV-2-4) slightly larger. Further, in the case of being used for a liquid crystal composition of a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the general formula (XIV-2-4) slightly smaller.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (56.2) is 1 to 1 in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 30% by mass is preferred, 4 to 20% by mass is preferred, and 8 to 16% by mass is particularly preferred.

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

(wherein R ¹⁴ 0 represents an alkyl group having 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 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 10% by mass or more and 22% by mass or less, more preferably 13% by mass or more and 18% by mass or less, and particularly preferably 13% by mass or more and 15% by mass or less.

In addition, 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 particularly preferred.

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

(wherein 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 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 10% by mass or more and 22% by mass or less, more preferably 15% by mass or more and 20% by mass or less, and 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 a compound represented by the formula (58.1) to the formula (58.4), and particularly preferably a compound represented by the formula (58.2). It is better.

The liquid crystal composition of the present invention preferably does not contain a compound having a structure in which oxygen atoms such as a peracid (-CO-OO-) structure are bonded to each other in the molecule.

When the reliability and long-term stability of the liquid crystal composition are important, the content of the compound having a carbonyl group is preferably 5% by mass or less, and preferably 3% by mass or less, based on the total mass of the composition. The mass % or less is more preferable, and substantially no content is optimal.

When the stability of the UV irradiation is emphasized, the content of the chlorine atom-substituted compound is preferably 15% by mass or less, preferably 10% by mass or less, and 5% by mass or less based on the total mass of the composition. More preferably, it is not optimally contained.

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

In order to suppress deterioration due to oxidation of the liquid crystal composition, it is preferable to reduce the content of the compound having a cyclohexylene group as a ring structure, and the content of the compound having a cyclohexylene group is 10% by mass or less based on the total mass of the composition. Preferably, it is preferably 5 mass% or less, and substantially no content is more preferable.

In the case where the improvement of viscosity and the improvement of Tni are emphasized, the hydrogen atom may be substituted with a halogen and the content of the compound having a 2-methylbenzene-1,4-diyl group in the molecule is preferably reduced. The content of the methylbenzene-1,4-diyl compound is preferably 10% by mass or less, more preferably 5% by mass or less, and most preferably not contained, based on the total mass of the composition.

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

In the liquid crystal composition 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 includes, for example, a biphenyl derivative, a biphenyl derivative, or the like, which has a six-membered ring. A polymerizable compound of a liquid crystal skeleton or the like. More specifically, the general formula (XX)

(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 bond, M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and any hydrogen atom of all 1,4-phenylene groups in the formula may be a fluorine atom substituted) Functional monomers are preferred.

It is preferable that either of X ²⁰¹ and X ²⁰² represents a diacrylate derivative of a hydrogen atom and a dimethacrylate derivative each having a methyl group, and one of them may represent a hydrogen atom and the other one. The compound represents a methyl group. The polymerization rate of these compounds is the fastest among the diacrylate derivatives, the slower of the dimethacrylate derivative, and the asymmetric compound among them, and a 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 alkyl group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -, and at least one of the PSA display elements is preferably a single bond, and represents a single bond. It is preferred that the compound or one of them represents a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or -O-(CH2) _s -. In this case, an alkyl group of 1 to 4 is preferred, and s is preferably 1 to 4.

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

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

From such a viewpoint, in the general formula (XX), the ring structure between Sp ²⁰¹ and Sp ²⁰² is specifically a structure described below.

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

(where the two ends are linked to Sp ²⁰¹ or Sp ²⁰² )

Since the alignment control ability after polymerization of the polymerizable compound containing these skeletons is most suitable for a PSA type liquid crystal display element, and a good alignment state can be obtained, display unevenness can be suppressed or all of them can be prevented from occurring.

According to the above, the polymerizable single system is particularly preferred from the formula (XX-1) to the formula (XX-4), and among them, the formula (XX-2) is particularly preferable.

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

Adding a monomer to the case of the liquid crystal composition of the present invention Although polymerization may be carried out in the absence of a polymerization initiator, a polymerization initiator may be contained in order to promote polymerization. Examples of the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzyl ketals, and mercaptophosphine oxides.

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

(wherein R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and 1 or 2 or more CH ₂ groups in the alkyl group may be such that the oxygen atoms are not directly adjacent to each other. -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -substituted, M ^Q represents trans-1,4-extension Cyclohexyl, 1,4-phenyl or 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 -Substitution, linear alkyl group having 1 to 10 carbon atoms, linear Alkoxy, 1 CH ₂ group substituted with -OCO- or -COO- linear alkyl, branched alkyl, branched alkoxy, 1 CH ₂ group substituted with -OCO- or -COO a branched alkyl group, 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, a branched alkyl group More preferably, an oxy group and a branched alkyl group in which one CH ₂ group is substituted with -OCO- or -COO- is preferred. M ^Q represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, and a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferred.

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

Wherein 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; R ^Q3 is preferably a linear alkyl group having 1 to 8 carbon atoms, a branched alkyl group, a linear alkoxy group or a branched alkoxy group, and the L ^Q is a straight 1 to 8 carbon atom. Chain alkyl or branched chain alkyl is preferred. 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 preferable.

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

<Liquid crystal display element>

The liquid crystal composition containing the polymerizable compound of the present invention can be polymerized by irradiating ultraviolet rays with the polymerizable compound contained therein to impart liquid crystal alignment energy, and can be used for controlling light penetration by utilizing birefringence of the liquid crystal composition. A light-transmitting liquid crystal display element. The liquid crystal display element is an AM-LCD (active matrix liquid crystal display element), a TN (nematic liquid crystal display element), an STN-LCD (super twisted nematic liquid crystal display element), an OCB-LCD, and an IPS-LCD (in-plane) It is useful to switch liquid crystal display elements, and is particularly useful for AM-LCDs, and can be used for transmissive or reflective liquid crystal display elements.

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

The color filter can be produced by, for example, a pigment dispersion method, a printing method, an electroplating method, or a dyeing method. When a method of producing a color filter by a pigment dispersion method is described as an example, a curable coloring composition for a color filter is applied onto the transparent substrate, patterned, and then heated. Or it is hardened by light irradiation. By performing this step for each of 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 or a thin film diode may be provided on the substrate.

The substrate is relatively opposed to the inner side of the transparent electrode layer to. At this time, the interval between the substrates may be adjusted via the spacer. In this case, it is preferable to adjust the thickness of the obtained light control layer to be 1 to 100 μm. It is more preferable that 1.5 to 10 μm is used, and in the case of using a polarizing plate, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the cell thickness d in such a manner that the contrast becomes maximum. Further, in the case of two polarizing plates, the polarization axes of the respective polarizing plates may be adjusted so that the viewing angle or the contrast becomes good. Further, a retardation film for expanding the viewing angle can also be used. The spacer may, for example, be a columnar spacer made of glass particles, plastic particles, alumina particles, or a photoresist material. Then, a sealant such as an epoxy thermosetting composition is screen-printed on the substrate in such a manner that a liquid crystal injection port is provided, and the substrates are bonded to each other, heated, and the sealant is thermally cured.

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 no dripping marks are generated, there is a problem that the injection marks remain. In the invention of the present invention, it can be more suitably used for a display element manufactured by the ODF method. In the manufacturing process of the liquid crystal display element of the ODF method, the epoxy-based photothermal heat is formed on the substrate of any one of the back sheet or the front panel by a sealant such as hardenability, and is formed into a closed loop earth bank shape, wherein After dropping a predetermined amount of the liquid crystal composition under degassing, the front panel and the back sheet were bonded to each other to manufacture a liquid crystal display element. The liquid crystal composition of the present invention can be suitably used because it can stably carry out the dropping of the liquid crystal composition in the ODF step.

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

The temperature at the time of irradiation is preferably within a temperature range capable of maintaining the liquid crystal state of the liquid crystal composition of the present invention. It is preferred to carry out the polymerization at a temperature close to room temperature, that is, at a temperature of typically 15 to 35 °C. A metal halide lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like can be used as the lamp for generating ultraviolet rays. Further, the wavelength of the ultraviolet ray to be irradiated is preferably an ultraviolet ray which is irradiated in a wavelength region of the absorption wavelength region of the non-liquid crystal composition, and it is preferably used by blocking 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 , and more} preferably from 2 mW/cm ² to 50 W/cm ² . The energy of the ultraviolet ray to be irradiated can be appropriately adjusted, preferably from 10 mJ/cm ² to 500 J/cm ^{2 , and} preferably from 100 mJ/cm ² to 200 J/cm ² . The intensity can also be changed when ultraviolet rays are irradiated. The time for irradiating the ultraviolet rays can be appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, preferably from 10 seconds to 3600 seconds, and preferably from 10 seconds to 600 seconds.

The liquid crystal display element using the liquid crystal composition of the present invention is useful for both high-speed response and suppression of display failure, and is particularly useful for active matrix driving liquid crystal display elements, and is applicable to VA mode, PSVA mode, and PSA mode. , IPS (in-plane switching) mode, VA-IPS mode, FFS (edge electric field switching) mode or liquid crystal display element for ECB mode.

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

Fig. 1 is a cross-sectional view showing a liquid crystal display element including a two-piece substrate facing each other, a sealing material provided between the substrates, and a liquid crystal sealed in a sealing region surrounding the sealing material.

Specifically, a specific example of a liquid crystal display device is provided in which the TFT layer 102 and the pixel electrode 103 are provided on the first substrate 100, and the passivation film 104 and the first alignment film are provided from above. a backing plate of 105; a black matrix 202, a color filter 203, a planarizing film (protective layer) 201, and a transparent electrode 204 are provided on the second substrate 200, and a second alignment film 205 is provided from above, and the foregoing a front plate facing the back plate; a sealing member 301 disposed between the substrates; and a liquid crystal layer 303 sealed in a sealing region surrounding the sealing member, and a protrusion (column) is provided on a surface of the substrate where the sealing member 301 is in contact Spacers 302, 304.

When the first substrate or the second substrate is substantially transparent, the material is not particularly limited, and glass, ceramics, plastic, or the like can be used. The plastic substrate can be a cellulose derivative such as cellulose, triacetyl cellulose or diethyl fluorene cellulose, a polycycloolefin derivative, polyethylene terephthalate or polyethylene naphthalate. Polyesters such as esters, polypropylenes, and polyethylenes, polycarbonates, polyvinyl alcohols, polyvinyl chlorides, polyvinylidene chlorides, polyamines, polyimines, polyamidiamines, polystyrenes, Polyacrylate, polymethyl methacrylate, polyether oxime, polyarylate, and inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, and the like.

In addition, when a plastic substrate is used, a barrier film is preferably provided. The function of the barrier film is to reduce the moisture permeability of the plastic substrate and to improve the reliability of the electrical characteristics of the liquid crystal display element. Each of the barrier films is not particularly limited as long as it has high transparency and low water vapor permeability, and is generally used by using an inorganic material such as cerium oxide and using vapor deposition and sputtering, and chemical vapor deposition (CVD). The film formed by the method).

In the present invention, the first substrate or the second substrate may be made of the same material or different materials, and is not particularly limited. When a glass substrate is used, it is preferable to produce a liquid crystal display element having excellent heat resistance and dimensional stability. Further, in the case of a plastic substrate, it is preferably a production method using a roll forming method and is suitable for weight reduction or flexibility. Further, in order to impart flatness and heat resistance, good results can be obtained when a plastic substrate and a glass substrate are combined.

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

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

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

Further, the first alignment film 105 has a function of aligning the liquid crystal, and a polymer material such as a polyimide is usually used. As the coating liquid, an alignment agent solution composed of a polymer material and a solvent can be used. Since the alignment film has a possibility of hindering the adhesion to the sealing material, pattern coating is performed in the sealing field. For the coating, a printing method such as a flexographic printing method, a droplet discharge method such as an inkjet method can be used. The applied alignment agent solution is cured by crosslinking by baking after drying the solvent by temporary drying. Then, in order to visualize the alignment function, alignment processing is performed.

The alignment treatment is usually performed by a rubbing method. By using a rubbing cloth composed of fibers such as ruthenium, the polymer film formed as described above is rubbed in one direction to generate liquid crystal alignment energy.

Also, there is a method of using the optical alignment. The photo-alignment method generates a aligning energy by irradiating a polarized light onto an alignment film containing a photoreceptive organic material, and does not cause scratches and dust on the substrate due to the rubbing method. An example of the organic material in the photo-alignment method is a material containing a dichroic dye. The dichroic dye can be used to have a molecular alignment induction or isomerization reaction (eg, azophenyl group) caused by the Weiger effect of photodichromaticity, and a dimerization reaction (eg, cassia ), photocrosslinking reaction (eg benzophenone), or photolysis reaction (eg polyimine) A group of photoreactive groups (hereinafter, simply referred to as photo-alignment groups) capable of generating the origin of liquid crystal alignment energy. 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 energy in an arbitrary direction can be obtained.

The front substrate of one of the second substrates 200 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.

The black matrix 202 is produced by, for example, a pigment dispersion method. Specifically, on the second substrate 200 provided with the barrier film 201, a colored resin liquid obtained by uniformly dispersing a black colorant for forming a black matrix is applied to form a colored layer. Then, the colored layer is baked to harden it. The photoresist is coated thereon and pre-baked. After the photoresist is exposed through the mask pattern, development is performed to pattern the colored layer. Then, the photoresist layer and the baked colored layer are peeled off to complete the black matrix 202.

Alternatively, a photoresist type pigment dispersion liquid can also be used. In this case, after the photoresist type pigment dispersion liquid is applied and prebaked, after exposure through a mask pattern, development is performed to pattern the colored layer. Then, the photoresist layer and the baked colored layer are peeled off to complete the black matrix 202.

The color filter 203 is formed by a pigment dispersion method, a plating method, a printing method, a dyeing method, or the like. In the case of the pigment dispersion method, a color resin liquid in which a pigment (for example, red) is uniformly dispersed is applied onto the second substrate 200, and after baking hardening, a photoresist is applied thereon and pre-baked. After exposure through the mask pattern, the photoresist is developed and patterned. Then completed by peeling off the photoresist layer and baking it (red) Color filter 203 (203a). The color order of the composition is not particularly limited. The green color filter 203 (203b) and the blue color filter 203 (203c) are formed in the same manner.

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

Further, in order to protect the transparent electrode 204, a passivation film is provided on the transparent electrode 204.

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

Although the above description of the back sheet and the front panel used in the present invention has been described above, the present invention is not limited to this specific aspect, and can be freely changed in accordance with the desired aspect of the liquid crystal display element. .

The shape of the columnar spacer is not particularly limited, and the horizontal cross section may be various shapes such as a circular shape such as a circular shape or a quadrangular shape. However, considering the misalignment margin at the step, the horizontal cross section is formed. It is especially good for round or regular polygons. Further, the shape of the protrusion is preferably a truncated cone or a truncated cone.

The material of the columnar spacer is not particularly limited as long as it is an organic solvent or a liquid crystal which is not dissolved in the sealing material or the sealing material, and is made of a synthetic resin (curing property) from the viewpoint of processing and weight reduction. Resin) is preferred. On the other hand, the aforementioned protrusions can be photolithographically The method and the droplet discharge method are provided on a surface where the sealing material on the first substrate meets. For this reason, it is preferred to use a photocurable resin suitable for the photolithography method and the droplet discharge method.

The case where the above-mentioned columnar spacer is obtained by photolithography will be described as an example. Fig. 2 is a view showing an exposure processing procedure using a pattern of columnar spacers formed on a black matrix as a mask pattern.

On the transparent electrode 204 of the front panel, a resin liquid for forming a columnar spacer (without a colorant) is applied. Then, the resin layer 402 is baked to be hardened. The photoresist is coated thereon and pre-baked. After exposure through the mask pattern 401, the photoresist is developed to pattern the resin layer. Then, the photoresist layer and the baked resin layer are peeled off to complete the columnar spacers (302, 304 of Fig. 1).

The position at which the column spacers are formed can be determined by the mask pattern to determine the desired position. Therefore, both the inside of the sealing area of the liquid crystal display element and the outside of the sealing area (the sealing material coating part) are simultaneously produced. Further, the columnar spacers are preferably formed in such a manner as to be on the black matrix without lowering the quality of the sealing field. The columnar spacers thus produced by photolithography are referred to as column spacers or light spacers.

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

In this manner, after the columnar spacer is provided on the surface of the sealing field on the front panel, a sealing material (301 in FIG. 1) is applied to the surface where the sealing material of the backing plate meets.

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

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

The method of applying the sealing material includes a printing method and a dispersion method, but it is preferably a dispersion method in which the amount of the sealing material used is small. The coating position of the sealing material is usually above the black matrix so as not to adversely affect the sealing field. In order to form the liquid crystal dropping field of the following steps (so that the liquid crystal does not leak), the sealing material coating shape is formed into a closed loop shape.

The liquid crystal was dropped in a closed loop shape (sealed area) of the panel before the application of the aforementioned sealing material. Usually a dispenser is used. In order to let the drop The amount of liquid crystal is the same as the volume of the liquid crystal cell, and is basically the same amount as the volume by which the height of the columnar spacer is multiplied by the sealed coated area. However, when the liquid crystal leakage amount is appropriately adjusted in order to optimize the liquid crystal leakage and the display characteristics in the cell bonding step, the liquid crystal dropping position can be dispersed.

Next, the back sheet was attached to the front panel on which the sealing material was applied and the liquid crystal was dropped. Specifically, the front panel and the back sheet are adsorbed to a platform having a mechanism capable of adsorbing a substrate such as an electrostatic chuck, and the second alignment film of the front panel faces the first alignment film of the back sheet, and It is disposed at a position (distance) where the sealing material does not contact the other substrate. In this state, the inside of the system is depressurized. After the decompression is completed, confirm the bonding position of the front panel and the back panel and adjust the position of the two substrates at the same time (alignment operation). If the adjustment of the bonding position is completed, the substrate is brought close to the position where the sealing material on the front panel is in contact with the backing plate. In this state, an inert gas is filled into the inside of the system, and the decompression is gradually opened while returning to normal pressure. At this time, the front panel and the backing plate are bonded together by atmospheric pressure, and a cell gap is formed at the height position of the columnar spacer. In this state, the sealing material is irradiated with ultraviolet rays to harden the sealing material to form a liquid crystal cell. Then, depending on the situation, the heating step is increased to promote the hardening of the sealing material. In order to improve the adhesion enhancement and electrical property reliability of the sealing material, the heating step is often increased.

[Examples]

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

In the examples, the measured characteristics are as follows.

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

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

Δε: 295K dielectric anisotropy

η: viscosity of 293K (mPa.s)

Γ1: 295K rotational viscosity (mPa.s)

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

<Evaluation of afterimage>

The image sticking evaluation of the liquid crystal display device was performed by displaying the predetermined fixed pattern in the display area for six weeks, and then using the following four-stage evaluation in a visual manner to evaluate the image level of the fixed pattern when the full-screen uniform display was performed.

◎: no afterimage

○: Although it is slightly residual, it is an acceptable level.

△: There is an afterimage and it is an unacceptable level

×: There is an afterimage, quite crude

<Evaluation of Volatile (Contamination of Manufacturing Equipment)>

0.15kg of liquid crystal composition was added in a stirred vessel dedicated vacuum degassing mixer 0.33L in capacity, while the revolution speed at 20S ^-1, rotation rate 10.0S ^-1 stirred operated vacuum degassing mixer, while deaerated to 15kPa To visually observe the foaming of the liquid crystal material. The volatility is classified into the following four grades by 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 by the device due to volatilization is low.

○: It takes 1 minute or more and less than 3 minutes until foaming. Worried that there will be slight device contamination due to volatilization.

△: It takes 30 seconds or more and less than 1 minute until foaming. Contamination of the device due to volatilization.

×: Within 30 seconds until foaming. Worried that there will be significant equipment contamination due to volatilization.

<Evaluation of process suitability>

In the ODF process, the fixed-capacity measurement pump was used to drop 50 pL of liquid crystal at a time, and the above-mentioned 100,000 times were performed, and the following four stages were used to evaluate the following "0 to 100 times, 101 to 200 times, 201 to 300". The change in the amount of liquid crystal at the time of 100 times per drop of .9991 to 100000 times.

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

○: Although it is slightly changed, it is still acceptable.

△: There is a change and it is an unacceptable level (the yield is deteriorated due to the generation of spots)

×: There is a change and it is quite crude (liquid crystal leakage and vacuum bubbles occur)

<Evaluation of solubility at low temperature>

The low-temperature solubility evaluation was carried out by modulating a liquid crystal composition, and weighing 0.5 g of a liquid crystal composition in a 1 mL sample bottle. Here, in the temperature-controlled test tank, the following "-25 ° C (hold for 1 hour) → Heating (0.2 ° C / min) → 0 ° C (for 1 hour) → temperature (0.2 ° C / min) → 20 ° C (for 1 hour) → cooling (-0.2 ° C / min) → 0 ° C (for 1 hour) )→cooling (-0.2 ° C / min) -25 ° C" The temperature change was continuously administered as one cycle, and the occurrence of precipitates derived from the liquid crystal composition was visually observed, and evaluated by the following four-stage evaluation.

◎: 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)

Modulation is shown in the following composition. The physical property values of the composition of Example 1 are shown in Table 1.

(Comparative Example 1)

A composition shown below which contains a compound having a chlorine atom as a substituent is prepared. The physical property values of the composition of Comparative Example 1 are shown in Table 2.

The composition of Comparative Example 1 containing a compound having a chlorine atom as a substituent showed a larger decrease in Tni than the composition of Example 1 which did not contain a compound having a chlorine atom as a substituent.

(Comparative Example 2)

The preparation does not contain the compound represented by the above formula (ii) and is represented by the following composition. The physical property values of the composition of Comparative Example 2 are shown in Table 3.

The composition of Comparative Example 2 which does not contain the compound represented by the above formula (ii), and the implementation of the compound represented by the above formula (ii) Compared with the composition of Example 1, Tni showed a significant decrease.

(Example 2)

Modulation is shown in the following composition. The physical property values of the composition of Example 2 are shown in Table 4.

(Example 3)

Modulation is shown in the following composition. The physical property values of the composition of Example 3 are shown in Table 5.

(Example 4)

Modulation is shown in the following composition. The physical property values of the composition of Example 4 are shown in Table 6.

(Example 5)

Modulation is shown in the following composition. The physical properties of the composition of Example 5 The values are shown in Table 7.

(Example 6)

Modulation is shown in the following composition. The physical property values of the composition of Example 6 are shown in Table 8.

(Example 7)

Modulation is shown in the following composition. The physical property values of the composition of Example 7 are shown in Table 9.

(Example 8)

Modulation is shown in the following composition. The physical property values of the composition of Example 8 are shown in Table 10.

(Example 9)

Modulation is shown in the following composition. The physical property values of the composition of Example 9 are shown in Table 11.

The various configurations and combinations of the above-described embodiments are merely examples, and the addition, omission, substitution, and other changes of the structure are possible without departing from the scope of the invention. . Further, the present invention is not limited to the respective embodiments, and is limited only by the scope of the patent application scope (the scope of patent application).

The initial VHR of the liquid crystal composition described in each example, the VHR after heating (150 ° C, 1 hour), the image retention evaluation, the evaluation of the volatility, the evaluation of the process suitability, and the evaluation of the solubility at low temperature are described in the table. 12~ Table 13.

[Industrial availability]

The present invention provides a liquid crystal composition having positive Δ ε, which can produce a liquid crystal phase having a wide temperature range with good yield, low viscosity, good solubility at low temperatures, high specific resistance and voltage retention, and heat and A liquid crystal display element in which light is stable, image defects such as image sticking and dripping marks are less likely to occur, and display level is excellent, and a liquid crystal display element using the liquid crystal composition is provided.

Claims (9)

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-1), and containing 2 to 35 mass% or less of the compound represented by the following formula (1.3), which contains a compound represented by the following formula (37.2), and does not contain a compound having a chlorine atom as a substituent. In the formula, R ⁱ¹ and R ⁱ² 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 - may independently be -CH=CH-, - C≡C-, -O-, -CO-, -COO- or -OCO-, the hydrogen atom in the alkyl group may also be substituted by a fluorine atom, and X ⁱ¹ , X ⁱ² , X ⁱ³ and X ⁱ⁴ each independently represent hydrogen The atom or the fluorine atom, 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 liquid crystal composition of claim 1, wherein X ⁱ² in the above formula (i) is a fluorine atom. The liquid crystal composition of claim 1, wherein at least one of R ⁱ¹ and R ^{i2 in} the above formula (i) is a propyl group. The liquid crystal composition of the first aspect of the invention, which has two or more compounds represented by the above formula (ii-1). A liquid crystal composition according to 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 - may independently be -CH=CH-, - C≡C-, -O-, -CO-, -COO- or -OCO-substitution, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently represented by the following group selected group of: (a) 1,4- cyclohexylene, the group present in a -CH ₂ - or -CH not adjacent two or more of ₂ - may be replaced by -O-; and (b 1,4-phenylene, wherein one -CH= or two or more adjacent -CH= which may be present in the group may be substituted with -N=; the above-mentioned group (a), group (b) One or two or more hydrogen atoms may be independently substituted with a cyano group or a fluorine 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-, where OL is 2 or 3 and L ^{L2 is} plural, they may be the same or different, OL is 2 or 3 and B ^{L3 is} plural, they may be the same or Different; however, the compounds represented by the general formula (i) and the formula (1.3) are excluded. A liquid crystal composition according to claim 1 which contains a compound represented by the following formula (M), Wherein, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and the alkyl group of 1 or more non-adjacent two of -CH ₂ - may each independently -CH = CH -, - C≡C-, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of: (d 1,4-cyclohexylene, one -CH ₂ - or two or more -CH ₂ - which are not present in the group may be substituted with -O- or -S-; and (e)1 , 4-phenylene, one -CH= or two or more adjacent -CH= which may be present in the group may be substituted with -N=; in the above-mentioned group (d), group (e) One or more hydrogen atoms may each independently be substituted with a cyano group or a fluorine 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-, PM is 2, 3 or 4 and K ^{M1 is} present in plural, The same may or may not be the same, PM is 2, 3 or 4 and C ^{M2 is} present in plural, they may be the same or different, X ^M1 and X ^M3 each independently represent a hydrogen atom or a fluorine atom, X ^M2 Represents a hydrogen atom, a fluorine atom, a cyano group, Fluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; however, the compound represented by the formula (ii-1) and the formula (37.2 Except for the compounds indicated. A liquid crystal display element using the liquid crystal composition of 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 a liquid crystal composition as in the first aspect of the patent application. A liquid crystal display using a liquid crystal display element as claimed in claim 7 or 8.