TW202111096A - Liquid crystal composition and liquid crystal display element meeting the various properties required for an n-type liquid crystal composition having a negative delta epsilon - Google Patents

Abstract

The present invention aims to provide a liquid crystal composition that meets the various properties required for an n-type liquid crystal composition having a negative delta epsilon and can achieve a high-speed response, a low drive voltage, a good low-temperature storage stability, a wide viewing angle, and a high transmittance when incorporated in a liquid crystal device such as a liquid crystal TV, and a liquid crystal display element using the same. The present invention provides a liquid crystal composition containing one or more compounds represented by formula (i) and one or more compounds represented by formula (ii). (In the formulas, Ri1 represents an alkyl group having 1 to 8 carbon atoms, Ri2 represents an alkoxy group having 1 to 8 carbon atoms, Rii1 represents an alkenyl group having 2 to 8 carbon atoms, Rii2 represents an alkyl group having 1 to 8 carbon atoms, Aii1 and Aii2 are groups selected from a group consisting of 1,4-cyclohexylene group, 1,4-phenylene group and 1,4-cyclohexenylene group, Zii1 and Zii2 are independently a single bond or a linking group, and nii1 and nii2 are independently an integer of 0 to 3.

Description

Liquid crystal composition and liquid crystal display element

The present invention relates to a liquid crystal composition and a liquid crystal display element using it. More specifically, the present invention relates to a so-called n-type liquid crystal composition exhibiting a negative value of dielectric anisotropy (Δε).

Liquid crystal display elements are used in various household electrical appliances such as watches and calculators, industrial measuring equipment, automotive panels, mobile phones, smartphones, notebook computers, tablet computers, and televisions. As a liquid crystal display method, representative ones include: TN (twisted nematic) type, STN (super twisted nematic) type, GH (guest-host) type, IPS (lateral electric field effect) type, FFS (fringe field switching) type , OCB (optical compensation birefringence) type, ECB (electrically controlled birefringence) type, VA (vertical alignment) type, CSH (color super vertical alignment) type, FLC (ferroelectric liquid crystal), etc. In addition, as the driving method, static driving, multiplex driving, simple matrix method, and active matrix (AM) method driven by TFT (thin film transistor) or TFD (thin film diode) can also be cited. Among these display methods, it is known that IPS type, FFS type, ECB type, VA type, CSH type, etc., if a liquid crystal composition (n-type liquid crystal composition) showing a negative value of dielectric anisotropy is used, the display is advantageous. characteristic.

Among the display methods using n-type liquid crystal composition, there are VA type, "PSA (Polymer Sustained Alignment) type that further polymerizes the polymerizable compound in the liquid crystal phase and controls the alignment", or PSVA (Polymer Stabili zed Vertival Alignment). ) Type is represented by the vertical alignment method, and the IPS type or FFS type is represented by the horizontal alignment method. The vertical alignment method has the characteristics of wide viewing angle, high transmittance, high contrast, and fast response speed, and is mainly used in large display elements such as TVs or monitors. On the other hand, if the horizontal alignment method is used in mobile devices such as smartphones and tablet PCs, from the viewpoint of wide viewing angle, high transmittance, low power consumption, and the best suitability for touch panels, Furthermore, it has also been developed and used in LCD TVs. The PSA type or PSVA type liquid crystal display device is a device that forms a polymer structure in the cell in order to control the pretilt angle of the liquid crystal molecules. Among the characteristics of the vertical alignment method, high-speed response or high contrast is particularly known. [Prior Technical Literature] [Patent Literature]

Patent Document 1: International Publication No. 2010/084823 Patent Document 2: Japanese Patent Application Publication No. 2016-216747 Patent Document 3: Japanese Patent Application Publication No. 2017-14486 Patent Document 4: Japanese Patent No. 6403038

[The problem to be solved by the invention]

In recent years, with the progress of high-resolution and high-frequency driving of liquid crystal TVs, the demand for liquid crystal compositions suitable for high-performance liquid crystal devices and capable of satisfying various characteristics has gradually increased. However, the liquid crystal compositions described in the aforementioned Patent Documents 1 to 4 still have room for improvement.

The problem to be solved by the present invention is to provide a negative Δε, satisfy various characteristics required by n-type liquid crystal compositions, and achieve high-speed response, low driving voltage, and good low-temperature storage performance when used in liquid crystal devices such as liquid crystal TVs. A liquid crystal composition with a wide viewing angle and high transmittance, and a liquid crystal display element using the liquid crystal composition. [Means to solve the problem]

The inventors of the present invention conducted studies on various liquid crystal compounds, etc., and found that the above-mentioned problems can be solved by adjusting the selection of the compounds, and completed the present invention.

That is, the present invention relates to a liquid crystal composition containing one or more compounds represented by general formula (i) and one or more compounds represented by general formula (ii).

(Wherein, R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms of, R ⁱ² carbon atoms of an alkoxy group having 1 to 8, R ⁱⁱ¹ carbon atoms of the alkenyl group having 2 to 8, R ⁱⁱ² carbon atoms An alkyl group of 1-8, one of the alkyl groups or two or more unadjacent -CH ₂ -s may be independently -CH=CH-, -C≡C-, -O-, -CO －, －COO－ or －OCO－ substitution, A ⁱⁱ¹ and A ⁱⁱ² are independent respectively, which means that the radical (a)～the radical (c) is selected from the group, (a) 1,4-cyclohexylene ( _{One -CH 2} -existing in the group or two or more non-adjacent -CH ₂ -may be substituted by -O-), (b) 1,4-phenylene (1 in the group -CH= or 2 or more non-adjacent -CH= may be substituted by -N=), and (c) 1,4-cyclohexenylene; the above-mentioned groups (a), (b) and groups ( c) It can also be independently substituted by a cyano group, a fluorine atom or a chlorine atom. Z ⁱⁱ¹ and Z ⁱⁱ² are independently each, representing a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡ C-, when there are a plurality of A ⁱⁱ¹ , A ⁱⁱ² , Z ⁱⁱ¹ and/or Z ⁱⁱ² , they may be the same or different, n ⁱⁱ¹ and n ⁱⁱ² are independent and represent an integer from 0 to 3, n ⁱⁱ¹ +n ⁱⁱ² is 1, 2 or 3). [Effects of Invention]

The liquid crystal composition system of the present invention is negative Δε, satisfies various characteristics required by n-type liquid crystal compositions, and can achieve high-speed response, low driving voltage, good low-temperature storage, and wide viewing angle when used in liquid crystal devices such as liquid crystal TV , And high transmittance, the liquid crystal display element of the present invention using the liquid crystal composition is useful for display elements such as liquid crystal TVs and displays.

As described above, the present invention relates to a liquid crystal composition and a liquid crystal display element using the liquid crystal composition. Hereinafter, first, the embodiment of the liquid crystal composition of the present invention will be described. ＜Liquid crystal composition＞ The liquid crystal composition of the present invention contains one or more compounds represented by the general formula (i) and one or more compounds represented by the general formula (ii). Hereinafter, the compound represented by formula (i) may be referred to as "compound (i)". In addition, the same applies to compounds represented by other chemical formulas. (Compound (i)) The compound represented by the following formula (i) corresponds to a dielectrically neutral compound (a compound with Δε of -2 to 2).

In formula (i), R ⁱ¹ is an alkyl group with 1 to 8 carbon atoms, preferably an alkyl group with 1 to 5 carbon atoms, more preferably ethyl, propyl or pentyl, and still more preferably ethyl Or propyl, especially propyl.

In formula (i), R ⁱ² is an alkoxy group having 1 to 8 carbon atoms, preferably an alkoxy group having 1 to 5 carbon atoms, more preferably a methoxy group, an ethoxy group or a propoxy group, and It is more preferably a methoxy group or an ethoxy group, and particularly preferably a methoxy group.

The compound represented by the formula (i) is preferably the compound represented by the following formula (i-1) to (i-4), and more preferably the compound represented by the following formula (i-3) or (i-4) The compound represented is particularly preferably a compound represented by formula (i-3).

The compound represented by the formula (i) may be used singly or in combination of two or more types. From the viewpoint of ease of acquisition, it is preferable to use only one type.

Relative to the total amount of the liquid crystal composition of the present invention, the preferred lower limit of the content of the compound represented by formula (i) is 3%, 5%, 7%, 10%, 12%, 15%, 18%, 20 %,twenty two%. The upper limit of the preferred content is 40%, 35%, 30%, 25%, 20%, 18%, 16%, 15%, 12%, 10%. (Compound (ii)) The compound represented by the following formula (ii) corresponds to a compound that is negative in terms of dielectric (the sign of Δε is negative, and its absolute value is greater than 2).

In the formula (ii), R ⁱⁱ¹ is an alkenyl group having 2 to 8 carbon atoms, preferably an alkenyl group having 2 to 5 carbon atoms, and more preferably an alkenyl group having 2 to 3 carbon atoms.

The alkenyl group is preferably a group represented by any one of formula (R1) to formula (R5) (black dots in ^each formula indicate the presence of A ii1 or 2,3-difluoro- in the formula) 1,4-The carbon atom in the phenylene group).

R ⁱⁱ² is 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, A ⁱⁱ¹ and A ⁱⁱ² are each independently selected from the group consisting of radicals (a) to (c), (a) 1, 4-Cyclohexylene (1 -CH ₂ -or 2 or more non-adjacent -CH ₂ -in the group can be substituted by -O-), (b) 1,4-phenylene (the One -CH= or two or more unadjacent ones -CH= can be substituted by -N=), and (c) 1,4-cyclohexenylene; each group is independent, or It is substituted by a cyano group, a fluorine atom or a chlorine atom. When it is required to increase Δn, A ⁱⁱ¹ and A ^{ii2 are} preferably independently aromatic. In order to improve the response speed, they are preferably aliphatic, preferably representing trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, 2,3 －Difluoro-1,4-phenylene, 1,4-cyclohexenylene, 1,4-bicyclo[2.2.2]octylene, piperidine-1,4-diyl, naphthalene-2, 6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably represents the following structure.

，

,

More preferably, it represents trans-1,4-cyclohexylene, 1,4-cyclohexenylene, or 1,4-phenylene.

Z ⁱⁱ¹ and Z ⁱⁱ² are independent, and are single bonds, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF _2- , -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-, preferably a single bond, -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -or -CF ₂ CF ₂ -, more preferably -CH ₂ O-, -CH ₂ CH ₂ -or a single bond, particularly _{preferably -CH 2} O- or a single bond.

As a combination of Z ⁱⁱ¹ and Z ⁱⁱ² , it is preferable that at least one Z ⁱⁱ¹ is a linking group other than a single bond and at least one of Z ii2 is a single bond, or at least one ^{Z ii2 exists} Z ⁱⁱ¹ is a linking group other than a single bond and n ⁱⁱ² is 0 and there is no combination of ^{Z ii2.}

Among them, Z ⁱⁱ¹ is preferably a combination of -CH ₂ O- and Z ⁱⁱ² is -CH ₂ O- or a single bond, and more preferably Z ⁱⁱ¹ is a combination of -CH ₂ O- and Z ⁱⁱ² is a single bond.

n ⁱⁱ¹ and n ⁱⁱ² are independent of each other and are an integer of 0 to 3, and n ⁱⁱ¹ +n ⁱⁱ² is 1, 2 or 3. n ⁱⁱ¹ +n ^{ii2 is more} preferably 1 or 2. Specifically, it is preferably a combination of n ⁱⁱ¹ being 1 and n ⁱⁱ² being 0, a combination of n ⁱⁱ¹ being 2 and n ⁱⁱ² being 0, a combination of n ⁱⁱ¹ being 1 and n ⁱⁱ² being 1, and n ⁱⁱ¹ being 2 and n ⁱⁱ² It is a combination of 1, more preferably a combination of n ⁱⁱ¹ being 1 and n ⁱⁱ² being 0, or a combination of n ⁱⁱ¹ being 2 and n ⁱⁱ² being 0.

As a compound represented by formula (ii), the compound represented by following formula (ii-1)-(ii-4) is mentioned.

(In the formula, R ⁱⁱ¹¹ to R ⁱⁱ¹⁴ and R ⁱⁱ²¹ to R ⁱⁱ²⁴ respectively represent the same meanings as ^{R ii1} and R ⁱⁱ² in formula (ii), ^{and n ii11} , n ⁱⁱ²² , and n ⁱⁱ¹³ are independent and represent 1 or 2). Among them, the compound represented by formula (ii-1) or (ii-2) is preferred, and the compound represented by formula (ii-1) is particularly preferred.

As the compounds represented by formulas (ii-1) to (ii-4), more specifically, compounds represented by the following formulas can be cited.

The compound represented by the formula (ii) may be used singly or in combination of two or more types. From the viewpoint of ease of acquisition, it is preferable to use only one type.

Relative to the total amount of the liquid crystal composition of the present invention, the preferred lower limit of the content of the compound represented by formula (ii) is 2%, 3%, 4%, 5%, 6%, 8%, 10%, 15 %. The upper limit of the preferred content is 40%, 35%, 30%, 25%, 20%, 18%, 15%, 13%, 12%, 10%, 8%. (Other compounds) ･Compound (N-1) The liquid crystal composition of the present invention preferably further contains one or more compounds represented by the general formula (N-1).

(In the formula, R ^N11 and R ^N12 are independent of each other and represent an alkyl group with 1 to 8 carbon atoms. One of the alkyl groups or two or more non-adjacent -CH ₂ -may be each independently by -C ≡C-, -O-, -CO-, -COO- or -OCO- substituted, A ^N11 and A ^N12 are independent respectively, which means to select the radical (a) ~ radical (d) in the group consisting of, ( a) 1,4-cyclohexylene (1 -CH ₂ -or 2 or more unadjacent -CH ₂ -can be substituted by -O- in the group), (b) 1,4-extension Phenyl (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted by -N=), (c) naphthalene-2,6-diyl, 1,2,3 ,4-Tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6- One -CH= or two or more non-adjacent ones -CH= which can be substituted by -N=), and (d) 1,4-cyclohexenylene; the above group (a), Group (b), group (c), and group (d) may be independently substituted by cyano, fluorine atom or chlorine atom. Z ^N11 and Z ^N12 are each independently, representing a single bond, -CH ₂ CH ₂ -,- (CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH= CH-, -CF=CF- or -C≡C-, n ^N11 and n ^N12 are independent of each other and represent an integer from 0 to 3, n ^N11 +n ^N12 is 1, 2 or 3, where there are plural A ^N11 ～A ^{In the case of N32} and Z ^N11 to Z ^N32 , they may be the same or different). The compound represented by formula (N-1) is preferably a compound in which Δε is negative and its absolute value is greater than 3.

In the formula (N-1), R ^N11 and R ^N12 are independent of each other, preferably an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms, and more preferably one having 1 to 5 carbon atoms An alkyl group or an alkoxy group with 1 to 5 carbon atoms, more preferably an alkyl group with 1 to 5 carbon atoms or an alkoxy group with 1 to 5 carbon atoms, particularly preferably an alkane with 1 to 4 carbon atoms A group or an alkoxy group having 1 to 4 carbon atoms.

In addition, when the ring structure to which it is bonded is phenyl (aromatic), it is preferably a linear alkyl group with 1 to 5 carbon atoms or a linear alkoxy group with 1 to 4 carbon atoms. , When the bonded ring structure is a saturated ring structure such as cyclohexane, piperan and dioxane, it is preferably a straight-chain alkyl group with 1 to 5 carbon atoms or a straight-chain carbon number 1～4 alkoxy group. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms when present is preferably 5 or less, preferably linear.

A ^N11 and A ^N12 are independent. When it is required to increase Δn, it is preferably aromatic. In order to improve the response speed, it is preferably aliphatic, preferably representing trans-1,4-cyclohexylene, 1 ,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, 2,3- Difluoro-1,4-phenylene, 1,4-cyclohexenylene, 1,4-bicyclo[2.2.2]octyl, piperidine-1,4-diyl, naphthalene-2,6 -Diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably represents the following structure.

More preferably, it represents trans-1,4-cyclohexylene, 1,4-cyclohexenylene, or 1,4-phenylene.

Z ^N11 and Z ^N12 are independent, and preferably represent -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -or a single bond, and more preferably represent -CH ₂ O- , -CH ₂ CH ₂ -or a single bond, particularly preferably -CH ₂ O- or a single bond.

n ^N11 +n ^{N12 is} preferably 1 or 2, preferably a combination where n ^N11 is 1 and n ^N12 is 0, n ^N11 is 2 and n ^N12 is 0, and n ^N11 is 1 and n ^N12 is 1 , N ^N11 is 2 and n ^N12 is a combination of 1.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (N-1) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20%.

When the viscosity of the liquid crystal composition is kept low and a composition with a fast response speed is required, it is preferable that the above-mentioned lower limit value is low and the upper limit value is low. Furthermore, when the Tni of the composition of the present invention is kept high and a composition with excellent temperature stability is required, it is preferable that the above-mentioned lower limit is low and the upper limit is low. In addition, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to increase the above-mentioned lower limit and the upper limit to be high.

Examples of the compound represented by the formula (N-1) include the group of compounds represented by the following general formulas (N-1a) to (N-1g), preferably (N-1c) and/or (N-1d) ).

(In the formula, R ^N11 and R ^N12 represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1) ^{, n Na11} represents 0 or 1, n ^Nb11 represents 1 or 2, n ^Nc11 represents 0 or 1, n ^Nd11 represents 1 or 2, n ^Ne11 represents 1 or 2, n ^Nf12 represents 1 or 2, n ^Ng11 represents 1 or 2, A ^Ne11 represents trans-1,4-cyclohexylene or 1,4-phenylene, A ^Ng11 represents trans-1,4-cyclohexenylene, 1,4-cyclohexenylene or 1,4-phenylene, but at least one represents 1,4-cyclohexenylene, Z ^Ne11 represents a single bond Or ethylidene, but at least one Z ^Ne11 present in the molecule represents an ethylidene group, and a plurality of A ^Ne11 , Z ^Ne11 , and/or A ^{Ng11 in the molecule} may be the same or different). More specifically, the compound represented by general formula (N-1) is preferably a compound selected from the group of compounds represented by general formula (N-1-1) to (N-1-21).

The compound represented by general formula (N-1-1) is the following compound.

(In the formula, R ^N111 and R ^N112 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N111 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably propyl or pentyl. R ^{N112 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group or a butoxy group.

The compound represented by the general formula (N-1-1) can be used alone, but can also be used in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and are used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on improving Δε, it is better to set the content higher. When focusing on low-temperature solubility, setting the content to a higher effect is higher, and when focusing on Tni, setting the content to a lower effect is higher. Furthermore, when improving drip marks or residual image characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (N-1-1) is 5%, 10%, 13%, 15%, 17%, 20%, 23 %, 25%, 27%, 30%, 33%, 35%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18% , 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

Furthermore, the compound represented by the general formula (N-1-1) is preferably a compound selected from the group of compounds represented by the formula (N-1-1.1) to the formula (N-1-1.14), and is preferably The compounds represented by the formulas (N-1-1.1) to (N-1-1.4) are preferably the compounds represented by the formula (N-1-1.1) and the formula (N-1-1.3).

The compounds represented by formulas (N-1-1.1) to (N-1-1.14) can be used alone or in combination. Relative to the total amount of the composition of the present invention, the compounds alone or the preferred content of these compounds The lower limit is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18% , 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

The compound represented by general formula (N-1-2) is the following compound.

(In the formula, R ^N121 and R ^N122 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N121 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably ethyl, propyl, butyl or pentyl. R ^{N122 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably methyl, propyl, methoxy, ethoxy or propoxy.

The compound represented by the general formula (N-1-2) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on improving Δε, it is better to set the content higher. When focusing on low-temperature solubility, if the content is set lower, the effect is high. When focusing on Tni, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (N-1-2) is 5%, 7%, 10%, 13%, 15%, 17%, 20 %, 23%, 25%, 27%, 30%, 33%, 35%, 37%, 40%, 42%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 50%, 48%, 45%, 43%, 40%, 38%, 35%, 33%, 30%, 28%, 25% , 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%.

Furthermore, the compound represented by the general formula (N-1-2) is preferably a compound selected from the group of compounds represented by the formula (N-1-2.1) to the formula (N-1-2.13), preferably (N-1-2.3) to the compounds represented by formula (N-1-2.7), formula (N-1-2.10), formula (N-1-2.11) and formula (N-1-2.13), pay attention to When improving Δε, the compounds represented by formula (N-1-2.3) to formula (N-1-2.7) are preferred. When improving Tni is important, formula (N-1-2.10) and formula (N -1-2.11) and the compound represented by the formula (N-1-2.13).

The compounds represented by formula (N-1-2.1) to formula (N-1-2.13) can be used alone or in combination, relative to the total amount of the composition of the present invention, alone or the preferred content of these compounds The lower limit values are 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18% , 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

The compound represented by general formula (N-1-3) is the following compound.

(In the formula, R ^N131 and R ^N132 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N131 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ^{N132 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy.

The compound represented by the general formula (N-1-3) may be used alone or in combination of two or more kinds of compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the preferred lower limit values of the content of the compound represented by formula (N-1-3) are 5%, 10%, 13%, 15%, 17%, and 20%. The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% relative to the total amount of the composition of the present invention.

Further, the compound represented by the general formula (N-1-3) is preferably a compound selected from the group of compounds represented by the formula (N-1-3.1) to the formula (N-1-3.11), preferably The compounds represented by (N-1-3.1) to (N-1-3.7) are preferably formula (N-1-3.1), formula (N-1-3.2), formula (N-1-3.3), Compounds represented by formula (N-1-3.4) and formula (N-1-3.6).

The compounds represented by formula (N-1-3.1) ~ formula (N-1-3.4) and formula (N-1-3.6) can be used alone or in combination, preferably formula (N-1-3.1) And the combination of formula (N-1-3.2), a combination of 2 or 3 selected from formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6). Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound alone or these compounds is 5%, 8%, 10%, 13%, 15%, 17%, 20%. The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% relative to the total amount of the composition of the present invention.

The compound represented by general formula (N-1-4) is the following compound.

(In the formula, R ^N141 and R ^N142 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^N141 and R ^N142 are independent of each other, and are preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably a methyl group, a propyl group or an ethoxy group.

The compound represented by the general formula (N-1-4) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on improving Δε, it is better to set the content higher. When focusing on low-temperature solubility, if the content is set higher, the effect is high. When focusing on Tni, if the content is set lower, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (N-1-4) is 3%, 5%, 7%, 10%, 13%, 15%, 17 %, 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 11%, 10% ,8%.

Further, the compound represented by the general formula (N-1-4) is preferably a compound selected from the group of compounds represented by the formula (N-1-4.1) to the formula (N-1-4.14), preferably The compounds represented by (N-1-4.1) ~ (N-1-4.4) are preferably those represented by formula (N-1-4.1), formula (N-1-4.2) and formula (N-1-4.4) Represents the compound.

The compounds represented by formulas (N-1-4.1) to (N-1-4.14) can be used alone or in combination. Relative to the total amount of the composition of the present invention, the compounds alone or the preferred content of these compounds The lower limit values are 3%, 5%, 7%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 11%, 10% ,8%.

The compound represented by general formula (N-1-5) is the following compound.

(In the formula, R ^N151 and R ^N152 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^N151 and R ^N152 are independent of each other, and are preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.

The compound represented by the general formula (N-1-5) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on improving Δε, it is better to set the content higher. When focusing on low-temperature solubility, if the content is set lower, the effect is high. When focusing on Tni, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (N-1-5) is 5%, 8%, 10%, 13%, 15%, 17%, 20 %. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

Further, the compound represented by the general formula (N-1-5) is preferably a compound selected from the group of compounds represented by the formula (N-1-5.1) to the formula (N-1-5.6), and is preferably the compound (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) represented by the compound.

The compounds represented by formula (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) can be used alone or in combination. Relative to the total amount of the composition of the present invention, The preferred lower limit values of the individual or these compounds are 5%, 8%, 10%, 13%, 15%, 17%, 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-10) is the following compound.

(In the formula, R ^N1101 and R ^N1102 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N1101 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ^{N1102 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-10) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on improving Δε, it is better to set the content higher. When focusing on low-temperature solubility, if the content is set higher, the effect is high. When focusing on Tni, if the content is set lower, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by formula (N-1-10) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

Furthermore, the compound represented by the general formula (N-1-10) is preferably a compound selected from the group of compounds represented by the formula (N-1-10.1) to the formula (N-1-10.5), and particularly preferably the compound (N-1-10.1) and a compound represented by formula (N-1-10.2).

The compounds represented by formula (N-1-10.1) and formula (N-1-10.2) can be used alone or in combination, relative to the total amount of the composition of the present invention, alone or in the preferred content of these compounds The lower limit values are 5%, 10%, 13%, 15%, 17%, 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-11) is the following compound.

(In the formula, R ^N1111 and R ^N1112 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N1111 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably a methyl group, an ethyl group, a propyl group or a butyl group. R ^{N1112 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy.

The compound represented by the general formula (N-1-11) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on improving Δε, it is better to set the content higher. When focusing on low-temperature solubility, if the content is set lower, the effect is high. When focusing on Tni, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by formula (N-1-11) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

Further, the compound represented by the general formula (N-1-11) is preferably a compound selected from the group of compounds represented by the formula (N-1-11.1) to the formula (N-1-11.6), preferably The compounds represented by (N-1-11.1) to (N-1-11.4) are preferably compounds represented by formula (N-1-11.2) and formula (N-1-11.4).

The compounds represented by formula (N-1-11.2) and formula (N-1-11.4) can be used alone or in combination, relative to the total amount of the composition of the present invention, alone or the preferred content of these compounds The lower limit values are 5%, 10%, 13%, 15%, 17%, 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-12) is the following compound.

(In the formula, R ^N1121 and R ^N1122 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N1121 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group or a propyl group. R ^{N1122 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy.

The compound represented by the general formula (N-1-12) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on improving Δε, it is better to set the content higher. When focusing on low-temperature solubility, if the content is set higher, the effect is high. When focusing on Tni, if the content is set lower, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the preferred lower limit values of the content of the compound represented by formula (N-1-12) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-13) is the following compound.

(In the formula, R ^N1131 and R ^N1132 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N1131 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group, a propyl group, or a butyl group. R ^{N1132 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and is preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-13) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by formula (N-1-13) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-14) is the following compound.

(In the formula, R ^N1141 and R ^{N1142 are} independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N1141 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ^{N1142 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy.

The compound represented by the general formula (N-1-14) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on improving Δε, it is better to set the content higher. When focusing on low-temperature solubility, if the content is set higher, the effect is high. When focusing on Tni, if the content is set lower, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by formula (N-1-14) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-15) is the following compound.

(In the formula, R ^N1151 and R ^N1152 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^{N1151 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ^{N1152 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy.

The compound represented by the general formula (N-1-15) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by formula (N-1-15) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-16) is the following compound.

^(Wherein, R N1161 ^R N1162, and each independently represents general formula (N-1), and R ^N11 are of the same meaning as R ^N12). R ^{N1161 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ^{N1162 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy.

The compound represented by the general formula (N-1-16) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the preferred lower limit values of the compound represented by formula (N-1-16) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-17) is the following compound.

^(Wherein, R N1171 ^R N1172, and each independently represents general formula (N-1), and R ^N11 are of the same meaning as R ^N12). R ^{N1171 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group, a propyl group, or a butyl group. R ^{N1172 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy.

The compound represented by the general formula (N-1-17) may be used alone or in combination of two or more kinds of compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the preferred lower limit values of the content of the compound represented by formula (N-1-17) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-18) is the following compound.

^(Wherein, R N1181 ^R N1182, and each independently represents general formula (N-1), and R ^N11 are of the same meaning as R ^N12). R ^{N1181 is} preferably an alkyl group having 1 to 5 carbon atoms, preferably a methyl group, an ethyl group, a propyl group or a butyl group. R ^{N1182 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-18) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the preferred lower limit values of the compound represented by formula (N-1-18) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

Furthermore, the compound represented by the general formula (N-1-18) is preferably a compound selected from the group of compounds represented by the formula (N-1-18.1) to the formula (N-1-18.5), and is preferably the compound The compounds represented by (N-1-18.1) to (N-1-18.3) are preferably compounds represented by formula (N-1-18.2) and formula (N-1-18.3).

The compound represented by general formula (N-1-20) is the following compound.

(Wherein, R ^N1201 R ^N1202, and each independently represents general formula (N-1), and R ^N11 are of the same meaning as R ^N12). R ^N1201 and R ^N1202 are independent of each other, and are preferably an alkyl group having 1 to 5 carbon atoms, preferably ethyl, propyl or butyl.

The compound represented by the general formula (N-1-20) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the preferred lower limit values of the compound represented by formula (N-1-20) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-21) is the following compound.

(In the formula, R ^N1211 and R ^N1212 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^N1211 and R ^N1212 are independent of each other, and are preferably an alkyl group having 1 to 5 carbon atoms, preferably ethyl, propyl or butyl.

The compound represented by the general formula (N-1-21) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the preferred lower limit values of the compound represented by formula (N-1-21) are 5%, 10%, 13%, 15%, 17%, and 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (N-1-22) is the following compound.

(In the formula, R ^N1221 and R ^N1222 are independent and have the same meaning as ^{R N11} and R ^N12 in the general formula (N-1)). R ^N1221 and R ^N1222 are independent of each other, preferably an alkyl group having 1 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compound represented by the general formula (N-1-22) may be used alone or in combination of two or more kinds of compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When the improvement of Δε is important, it is better to set the content higher. When the low temperature solubility is important, if the content is set higher, the effect is high. When the Tni is important, if the content is set higher, The effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (N-1-21) is 1%, 5%, 10%, 13%, 15%, 17%, 20 %. Relative to the total amount of the composition of the present invention, the preferred upper limit of the content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 5% .

Furthermore, the compound represented by the general formula (N-1-22) is preferably a compound selected from the group of compounds represented by the formula (N-1-22.1) to the formula (N-1-22.6), and is preferably the compound The compounds represented by (N-1-22.1) to (N-1-22.5) are preferably compounds represented by formulas (N-1-22.1) to (N-1-22.4).

Among them, the compound (N-1) is preferably any one or more of compounds (N-1-1) to (N-1-5), compound (N-1-10), and compound (N-1- 11) The combination, more preferably any one or more of compounds (N-1-1)～(N-1－4), (N-1-10), and the combination of compound (N-1-11), more It is preferably any one or more of compounds (N-1－1)～(N-1－4), compound (N-1-10), and a combination of compound (N-1-11), especially compound (N -1-3), compound (N-1-10), and compound (N-1-11) combination. ･Compound (L) The liquid crystal composition of the present invention preferably further contains one or more compounds represented by the general formula (L).

(In the formula, R ^L1 and R ^L2 are independent of each other and represent an alkyl group with 1 to 8 carbon atoms. One of the alkyl groups or two or more non-adjacent -CH ₂ -s may be independently -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^L1 means 0, 1, 2 or 3, A ^L1 , A ^L2 and A ^L3 are independent respectively, which means Select radicals (a) ~ radicals (c) in the group consisting of, (a) 1,4-cyclohexylene (one -CH ₂ -or more than two unadjacent ones in the radical) -CH ₂ -can be substituted by -O-), (b) 1,4-phenylene (1 -CH= or 2 or more non-adjacent ones in the group -CH= can be -N= Substitution), and (c) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decalin-2,6-diyl (naphthalene-2, One of 6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl -CH= or 2 or more unadjacent -CH= can be substituted by -N=) ; The above-mentioned groups (a), group (b) and group (c) may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, ^{respectively, Z L1} and Z ^L2 are each independent, and represent a single bond, -CH ₂ CH _2- ,-(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-,- CH=CH-, -CF=CF- or -C≡C-, when n ^L1 is 2 or 3 and there are multiple A ^L2s , they can be the same or different, and n ^L1 is 2 or 3 and exists When there are plural Z ^L2s , they may be the same or different, but do not include the compounds represented by the general formulas (i), (ii) and (N-1)). The compound represented by the formula (L) corresponds to a compound that is almost neutral in terms of dielectric (Δε value is -2 to 2). Therefore, it is preferable to set the number of polar groups such as halogen in the molecule to 2 or less, more preferably to 1 or less, and it is preferable to not have polar groups such as halogen.

The compound represented by formula (L) can be used alone or in combination. The types of compounds that can be combined are not particularly limited, and are used in appropriate combinations according to desired properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of compound used is, for example, one type as an embodiment of the present invention. Or, in another embodiment of the present invention, they are 2, 3, 4, 5, 6, 7, 8, 9, 10 or more.

In the composition of the present invention, the content of the compound represented by the general formula (L) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drip marks, residual image, media The required performance such as electrical conductivity can be adjusted appropriately.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60% , 65%, 70%, 75%, 80%. The upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%.

When the viscosity of the liquid crystal composition is kept low and a composition with a fast response speed is required, it is preferable that the above-mentioned lower limit value is high and the upper limit value is high. Furthermore, when the Tni of the composition of the present invention is kept high and a composition with excellent temperature stability is required, it is preferable that the above-mentioned lower limit is high and the upper limit is high. In addition, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value low and the upper limit value low.

When reliability is important, it is preferable that both R ^L1 and R ^L2 are alkyl groups. When the volatility reduction of the compound is important, alkoxy groups are preferable. When viscosity reduction is important, at least one of them is preferably an alkene. base.

The number of halogen atoms present in the molecule is preferably 0, 1, 2, or 3, preferably 0 or 1, and preferably 1 when the compatibility with other liquid crystal molecules is important.

Regarding R ^L1 and R ^L2 , when the ring structure to which they are bonded is a phenyl group (aromatic), it is preferably a linear alkyl group with 1 to 5 carbon atoms, and a linear chain with 1 to 5 carbon atoms. The alkoxy group of 4 and the alkenyl group with 4 to 5 carbon atoms are preferably linear carbon when the ring structure to which they are bonded is a saturated ring structure such as cyclohexane, piperan and dioxane. An alkyl group having 1 to 5 atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms when present is preferably 5 or less, preferably linear.

The alkenyl group is preferably a group represented by any one of formula (R1) to formula (R5) (black dots in each formula represent carbon atoms in the ring structure).

Regarding n ^L1 , when the response speed is important, it is preferably 0, in order to improve the upper limit temperature of the nematic phase, it is preferably 2 or 3, and in order to balance these, it is preferably 1. In addition, in order to satisfy the required characteristics, it is preferable to combine compounds of different values as the composition.

Regarding A ^L1 , A ^L2 and A ^L3 , when it is required to increase Δn, they are preferably aromatic. In order to improve the response speed, they are preferably aliphatic, and each independently represents trans-1,4- Cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene , 1,4-cyclohexenyl, 1,4-bicyclo[2.2.2]octyl, piperidine-1,4-diyl, naphthalene-2,6-diyl, decalin-2, The 6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group preferably represents the following structure.

，

,

More preferably, it represents trans-1,4-cyclohexylene or 1,4-phenylene.

When the response speed is important, Z ^L1 and Z ^{L2 are} preferably single bonds.

The compound represented by the general formula (L) preferably has 0 or 1 halogen atoms in the molecule.

The compound represented by general formula (L) is preferably a compound selected from the group of compounds represented by general formulas (L-1) to (L-7).

The compound represented by general formula (L-1) is the following compound.

(In the formula, R ^L11 and R ^L12 are independent and have the same meaning as ^{R L1} and R ^L2 in the general formula (L)). R ^L11 and R ^{L12 are} preferably linear alkyl groups having 1 to 5 carbon atoms, linear alkoxy groups having 1 to 4 carbon atoms, and linear alkenyl groups having 2 to 5 carbon atoms. .

The compound represented by the general formula (L-1) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

Relative to the total amount of the composition of the present invention, the preferred lower limit value of the content is 1%, 2%, 3%, 5%, 7%, 10%, 15%, 20%, 25%, 30%, 35% , 40%, 45%, 50%, 55%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, 45% , 40%, 35%, 30%, 25%.

When the viscosity of the liquid crystal composition is kept low and a composition with a fast response speed is required, it is preferable that the above-mentioned lower limit value is high and the upper limit value is high. Furthermore, when the Tni of the composition of the present invention is kept high and a composition with excellent temperature stability is required, it is preferable that the above-mentioned lower limit value is an intermediate value, and the upper limit value is an intermediate value. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the above-mentioned lower limit value is low and the upper limit value is low.

The compound represented by general formula (L-1) is preferably a compound selected from the group of compounds represented by general formula (L-1-1).

(In the formula, R ^L12 represents the same meaning as in the general formula (L-1)). The compound represented by the general formula (L-1-1) is preferably a compound selected from the group of compounds represented by the formula (L-1-1.1) to the formula (L-1-1.3), and is preferably a compound represented by the formula (L -1-1.2) or the compound represented by the formula (L-1-1.3), particularly preferably the compound represented by the formula (L-1-1.3).

With respect to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by the formula (L-1-1.3) are 1%, 2%, 3%, 5%, 7%, and 10%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

The compound represented by general formula (L-1) is preferably a compound selected from the group of compounds represented by general formula (L-1-2).

(In the formula, R ^L12 represents the same meaning as in the general formula (L-1)). Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L-1-2) is 1%, 5%, 10%, 15%, 17%, 20%, 23 %, 25%, 27%, 30%, 35%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, 33%, 30%.

Furthermore, the compound represented by the general formula (L-1-2) is preferably a compound selected from the group of compounds represented by the formula (L-1-2.1) to the formula (L-1-2.4), preferably (L-1-2.2) to the compound represented by the formula (L-1-2.4). In particular, the compound represented by the formula (L-1-2.2) is particularly preferable because it can improve the response speed of the composition of the present invention. In addition, when a higher Tni is required than the response speed, it is preferable to use the compound represented by the formula (L-1-2.3) or the formula (L-1-2.4). Regarding the content of the compound represented by the formula (L-1-2.3) and the formula (L-1-2.4), in order to improve the solubility at low temperatures, it is not preferable to set it to 30% or more.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L-1-2.2) is 10%, 15%, 18%, 20%, 23%, 25%, 27 %, 30%, 33%, 35%, 38%, 40%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, 32%, 30%, 27% , 25%, 22%.

With respect to the total amount of the composition of the present invention, the preferred lower limit of the total content of the compound represented by the formula (L-1-1.3) and the compound represented by the formula (L-1-2.2) is 10%, 15 %, 20%, 25%, 27%, 30%, 35%, 40%. The upper limit of the preferred content is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, 32%, 30%, 27% relative to the total amount of the composition of the present invention. %, 25%, 22%.

The compound represented by general formula (L-1) is preferably a compound selected from the group of compounds represented by general formula (L-1-3).

(In the formula, R ^L13 and R ^L14 are independent of each other and represent an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms). R ^L13 and R ^{L14 are} preferably linear alkyl groups having 1 to 5 carbon atoms, linear alkoxy groups having 1 to 4 carbon atoms, and linear alkenyl groups having 2 to 5 carbon atoms. .

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L-1-3) is 1%, 5%, 10%, 13%, 15%, 17%, 20 %, 23%, 25%, 30%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 27%, 25% , 23%, 20%, 17%, 15%, 13%, 10%. Furthermore, the compound represented by the general formula (L-1-3) is preferably a compound selected from the group of compounds represented by the formula (L-1-3.1) to the formula (L-1-3.13), and is preferably the compound (L-1-3.1), the compound represented by the formula (L-1-3.3) or the formula (L-1-3.4). In particular, the compound represented by the formula (L-1-3.1) is particularly preferable because it can improve the response speed of the composition of the present invention. In addition, when a higher Tni is required than the response speed, it is better to use the formula (L-1－3.3), formula (L-1－3.4), formula (L-1－3.11) and formula (L-1 －3.12) The compound indicated. Regarding the total content of the compounds represented by formula (L-1－3.3), formula (L-1－3.4), formula (L-1－3.11) and formula (L-1－3.13), in order to make the solubility at low temperature It is good, but 20% or more is not preferable.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L-1-3.1) is 1%, 2%, 3%, 5%, 7%, 10%, 13 %, 15%, 18%, 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 20%, 17%, 15%, 13%, 10%, 8%, 7%, 6%.

The compound represented by general formula (L-1) is preferably a compound selected from the group of compounds represented by general formula (L1-4) and/or (L-1-5).

(In the formula, R ^L15 and R ^L16 are independent of each other and represent an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms). R ^L15 and R ^{L16 are} preferably linear alkyl groups having 1 to 5 carbon atoms, linear alkoxy groups having 1 to 4 carbon atoms, and linear alkenyl groups having 2 to 5 carbon atoms. .

Relative to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by formula (L1-4) are 1%, 5%, 10%, 13%, 15%, 17%, 20 %. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 25%, 23%, 20%, 17%, 15%, 13%, 10%.

With respect to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L-1-5) is 1%, 5%, 10%, 13%, 15%, 17%, 20 %. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 25%, 23%, 20%, 17%, 15%, 13%, 10%.

Furthermore, the compounds represented by general formulas (L-1-4) and (L-1-5) are preferably selected from the group of compounds represented by formula (L-1-4.1) to formula (L-1-5.3) The compound in is preferably a compound represented by formula (L-1-4.2) or formula (L-1-5.2).

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L-1-4.2) is 1%, 2%, 3%, 5%, 7%, 10%, 13 %, 15%, 18%, 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 20%, 17%, 15%, 13%, 10%, 8%, 7%, 6%.

Preferably, the combination is selected from formula (L-1-1.3), formula (L-1-2.2), formula (L-1-3.1), formula (L-1-3.3), formula (L-1-3.4) , Two or more compounds of the compounds represented by formula (L-1－3.11) and formula (L-1－3.12), preferably a combination selected from formula (L-1－1.3), formula (L-1) -2.2), a compound of two or more of the compounds represented by the formula (L-1-3.1), the formula (L-1-3.3), the formula (L-1-3.4) and the formula (L-1-4.2) , The preferable lower limit of the total content of these compounds is 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15% relative to the total content of the composition of the present invention %, 18%, 20%, 23%, 25%, 27%, 30%, 33%, 35%; relative to the total amount of the composition of the present invention, the upper limit value is 80%, 70%, 60%, 50 %, 45%, 40%, 37%, 35%, 33%, 30%, 28%, 25%, 23%, 20%. When attaching importance to the reliability of the composition, it is preferable to combine two kinds of compounds selected from the compounds represented by the formula (L-1-3.1), the formula (L-1-3.3) and the formula (L-1-3.4)) The above compound is preferably a combination of two or more compounds selected from the compounds represented by the formula (L-1-1.3) and the formula (L-1-2.2) when the response speed of the composition is important. The compound represented by general formula (L-1) is preferably a compound selected from the group of compounds represented by general formula (L-1-6).

(In the formula, R ^L17 and R ^L18 are independent of each other and represent a methyl group or a hydrogen atom). Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (L-1-6) is 1%, 5%, 10%, 15%, 17%, 20%, 23 %, 25%, 27%, 30%, 35%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, 33%, 30%.

Furthermore, the compound represented by general formula (L-1-6) is preferably a compound selected from the group of compounds represented by formula (L-1-6.1) to formula (L-1-6.3).

The compound represented by general formula (L-2) is the following compound.

(In the formula, R ^L21 and R ^L22 are independent of each other and have the ^{same meaning as R L1} and R ^L2 in the general formula (L), but do not include the compound represented by the above formula (i)). R ^{L21 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^{L22 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms.

The compound represented by the general formula (L-2) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

When focusing on the solubility at low temperature, if the content is set high, the effect is high. Conversely, when focusing on the response speed, if the content is set low, the effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

With respect to the total amount of the composition of the present invention, the preferred lower limit values of the compound represented by formula (L-2) are 1%, 2%, 3%, 5%, 7%, and 10%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

Furthermore, the compound represented by general formula (L-2) is preferably a compound selected from the group of compounds represented by formula (L-2.1) to formula (L-2.2).

The compound represented by general formula (L-3) is the following compound.

(In the formula, R ^L31 and R ^L32 are independent and have the same meaning as ^{R L1} and R ^L2 in the general formula (L)). R ^L31 and R ^L32 are independent of each other, and are preferably 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 compound represented by the general formula (L-3) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

With respect to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by formula (L-3) are 1%, 2%, 3%, 5%, 7%, and 10%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

When a high birefringence is obtained, if the content is set high, the effect is high. Conversely, when high Tni is emphasized, if the content is set low, the effect is high. Furthermore, when improving dripping or afterimage characteristics, it is preferable to set the content range in the middle.

Furthermore, the compound represented by the general formula (L-3) is preferably a compound selected from the group of compounds represented by the formula (L-3.1) to the formula (L-3.7), and is preferably a compound from the formula (L-3.2) to The compound represented by formula (L-3.5).

The compound represented by general formula (L-4) is the following compound.

(In the formula, R ^L41 and R ^L42 are independent of each other and have the same meaning as ^{R L1} and R ^{L2 in the general formula (L)).} R ^{L41 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^{L42 is} preferably 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 compound represented by the general formula (L-4) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

In the composition of the present invention, the content of the compound represented by the general formula (L-4) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drip marks, and residual image , Dielectric conductivity and other required performance should be adjusted appropriately.

Relative to the total amount of the composition of the present invention, the preferred lower limit values of the compound represented by formula (L-4) are 1%, 2%, 3%, 5%, 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content of the compound represented by formula (L-4) is 50%, 40%, 35%, 30%, 20%, 15%, 10%, 5%.

The compound represented by general formula (L-4) is preferably a compound represented by formula (L-4.1) to formula (L-4.3), for example.

According to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., it can also contain the compound represented by formula (L-4.1) or the compound represented by formula (L-4.2) , May contain both the compound represented by the formula (L-4.1) and the compound represented by the formula (L-4.2), and may also contain all the compounds represented by the formula (L-4.1) to the formula (L-4.3) . Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L-4.1) or formula (L-4.2) is 3%, 5%, 7%, 9%, 11% , 12%, 13%, 18%, 21%, the preferred upper limit is 45, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%.

When both the compound represented by the formula (L-4.1) and the compound represented by the formula (L-4.2) are contained, the lower limit of the preferable content of the two compounds is 15 relative to the total amount of the composition of the present invention %, 19%, 24%, 30%, preferably upper limit values are 45, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (L-4) is preferably a compound represented by formula (L-4.4) to formula (L-4.6), and preferably a compound represented by formula (L-4.4), for example.

According to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., it can also contain the compound represented by the formula (L-4.4) or the compound represented by the formula (L-4.5) , May contain both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5).

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of the compound represented by formula (L-4.4) or formula (L-4.5) is 3%, 5%, 7%, 9%, 11% , 12%, 13%, 18%, 21%. The preferred upper limit is 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%.

When both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5) are contained, the lower limit of the preferable content of the two compounds is 15 relative to the total amount of the composition of the present invention %, 19%, 24%, 30%, preferably upper limit values are 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by the general formula (L-4) is preferably the compound represented by the formula (L-4.7) to the formula (L-4.10), and is particularly preferably the compound represented by the formula (L-4.9).

The compound represented by general formula (L-5) is the following compound. Since the compound represented by the general formula (L-5) has a skeleton similar to that of the compound (i), it can achieve the same effect and is excellent in compatibility. Therefore, it is preferably used in combination with the compound (i).

(In the formula, R ^L51 and R ^L52 are independent, and have the same meaning as ^{R L1} and R ^L2 in the general formula (L)). R ^{L51 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and R ^{L52 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or An alkoxy group having 1 to 4 carbon atoms.

The compound represented by the general formula (L-5) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

In the composition of the present invention, the content of the compound represented by the general formula (L-5) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drip marks, and residual image , Dielectric conductivity and other required performance should be adjusted appropriately.

Relative to the total amount of the composition of the present invention, the lower limit values of the preferred content of the compound represented by formula (L-5) are 1%, 2%, 3%, 5%, 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content of the compound represented by formula (L-5) is 50%, 40%, 35%, 30%, 20%, 15%, 10%, 5%. The compound represented by general formula (L-5) is preferably a compound represented by formula (L-5.1) to formula (L-5.3), and is particularly preferably represented by formula (L-5.1) or formula (L-5.2) The compound.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of these compounds is 1%, 2%, 3%, 5%, 7%. The upper limit of the preferred content of these compounds is 20%, 15%, 13%, 10%, 9%.

The compound represented by general formula (L-5) is preferably a compound represented by formula (L-5.4) or formula (L-5.5).

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of these compounds is 1%, 2%, 3%, 5%, 7%. The upper limit of the preferred content of these compounds is 20%, 15%, 13%, 10%, 9%.

The compound represented by the general formula (L-5) is preferably a compound selected from the group of compounds represented by the formula (L-5.6) to the formula (L-5.8), and particularly preferably the compound represented by the formula (L-5.6) Compound.

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of these compounds is 1%, 2%, 3%, 5%, 7%. The upper limit of the preferred content of these compounds is 20%, 15%, 13%, 10%, 9%, 6%.

The compound represented by general formula (L-6) is the following compound.

(In the formula, R ^L61 and R ^L62 are independent of each other and represent the same meaning as ^{R L1} and R ^{L2 in the general formula (L), and X L61} and X ^L62 are independent of each other and represent a hydrogen atom or a fluorine atom). R ^L61 and R ^L62 are independent, preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably one of X ^L61 and X ^L62 is a fluorine atom and the other Is a hydrogen atom.

The compound represented by formula (L-6) may be used alone or in combination of two or more kinds of compounds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of the compound used is, for example, as one embodiment of the present invention, one, two, three, four, or five or more types.

Relative to the total amount of the composition of the present invention, the preferred lower limit values of the compound represented by formula (L-6) are 1%, 2%, 3%, 5%, 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content of the compound represented by formula (L-6) is 50%, 40%, 35%, 30%, 20%, 15%, 10%, 5%. When the focus is on increasing Δn, it is better to make the content more, and when the focus is on precipitation at low temperature, the content is less to be better.

The compound represented by general formula (L-6) is preferably a compound represented by formula (L-6.1) to formula (L-6.9).

The type of the compound that can be combined is not particularly limited, and preferably contains one to three of these compounds, and more preferably contains one to four. In addition, since the selected compound has a wide molecular weight distribution and is effective for solubility, it is preferable to select one compound from the compound represented by formula (L-6.1) or (L-6.2), and formula (L-6.4) Or select 1 compound from the compound represented by (L-6.5), select 1 compound from the compound represented by formula (L-6.6) or formula (L-6.7), from formula (L-6.8) or (L-6.9) One compound is selected from the compound represented by ), and these are appropriately combined. Among them, it is preferable to contain compounds represented by formula (L-6.1), formula (L-6.3), formula (L-6.4), formula (L-6.6), and formula (L-6.9).

Furthermore, the compound represented by general formula (L-6) is preferably, for example, a compound represented by formula (L-6.10) to formula (L-6.17), and among them, a compound represented by formula (L-6.11) is preferable .

Relative to the total amount of the composition of the present invention, the preferred lower limit of the content of these compounds is 1%, 2%, 3%, 5%, 7%. The upper limit of the preferred content of these compounds is 20%, 15%, 13%, 10%, 9%.

The compound represented by general formula (L-7) is the following compound.

(In the formula, R ^L71 and R ^{L72 are independent of each other, meaning the same meaning as R L1} and R ^L2 in general formula (L), ^{and A L71} and A ^L72 are independent of each other, meaning that they are the same as those ^{of A L2} and A in general formula (L). ^{L3 has the} same meaning, ^{the hydrogen atoms on A L71} and A ^L72 can also be independently replaced by fluorine atoms, Z ^L71 represents the same meaning as ^{Z L2} in the general formula (L) ^{, X L71} and X ^L72 are independent, respectively, representing a fluorine atom Or hydrogen atoms). In the formula, R ^L71 and R ^L72 are independent of each other, preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, A ^L71 and A ^L72 Each independently, preferably 1,4-cyclohexylene or 1,4-phenylene ^{. The hydrogen atoms on A L71} and A ^L72 can also be independently substituted by fluorine atoms. Z ^{L71 is} preferably a single bond or COO -, preferably a single bond, and X ^L71 and X ^{L72 are} preferably hydrogen atoms.

The types of compounds that can be combined are not particularly limited, and they are combined according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, and four types as an embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-7) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drip marks, and residual image , Dielectric conductivity and other required performance should be adjusted appropriately.

Relative to the total amount of the composition of the present invention, the preferred lower limit values of the content of the compound represented by formula (L-7) are 1%, 2%, 3%, 5%, 7%, 10%, 14%, 16%, 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content of the compound represented by formula (L-7) is 30%, 25%, 23%, 20%, 18%, 15%, 10%, 5%.

When the composition of the present invention has a high Tni embodiment, it is better to make the content of the compound represented by formula (L-7) larger, and when the low viscosity embodiment is ideal, it is better to make the content smaller .

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.1) to formula (L-7.4), and is preferably a compound represented by formula (L-7.2).

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.11) to formula (L-7.13), and is preferably a compound represented by formula (L-7.11).

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.21) to formula (L-7.23). Preferably, it is a compound represented by formula (L-7.21).

Further, the compound represented by the general formula (L-7) is preferably the compound represented by the formula (L-7.31) to the formula (L-7.34), preferably the formula (L-7.31) or/and the formula (L- 7.32) The compound represented.

Furthermore, the compound represented by the general formula (L-7) is preferably the compound represented by the formula (L-7.41) to the formula (L-7.44), preferably the formula (L-7.41) or/and the formula (L- 7.42) The compound represented.

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.51) to formula (L-7.53).

With respect to the total amount of the composition of the present invention, the preferred lower limit of the total content of the compounds represented by general formula (i), general formula (ii), general formula (N-1) and general formula (L) is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. The upper limit of the preferred content is 100%, 99%, 98%, 95%, 93%, 90%.

The upper limit of the total preferable content of the compound having an alkenyl group relative to the total amount of the composition of the present invention is 30%, 25%, 20%, 15%, 13%, and 10%. If it contains a compound having an alkenyl group, it is effective in improving the response speed, but it also has an adverse effect from the viewpoint of reliability and wavelength dispersion of Δn. Therefore, the compound represented by the formula (L) and the compound represented by the formula (N-1) are preferably compounds having no alkenyl group, and more preferably, in addition to the compound represented by the formula (ii), substantially no Alkenyl compounds.

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

When attaching importance to the reliability and long-term stability of the composition, relative to the total mass of the above composition, it is preferable to set the content of the compound having a carbonyl group to 5% or less, more preferably to 3% or less, and even more preferably It is 1% or less, and it is most preferable that it contains substantially no compound having a carbonyl group.

When attaching importance to stability by UV irradiation, relative to the total mass of the above composition, it is preferable to set the content of compounds substituted by chlorine atoms to 15% or less, more preferably 10% or less, and more preferably 8 % Or less, more preferably 5% or less, more preferably 3% or less, and still more preferably substantially no compound substituted with a chlorine atom.

The content of the compound in which the ring structure in the molecule is all six-membered ring is better. Relative to the total mass of the above composition, it is better to set the content of the compound in which the ring structure in the molecule is all six-membered ring to 80% The above is more preferably set to 90% or more, still more preferably set to 95% or more, and it is most preferable that the composition is substantially composed of compounds whose intramolecular ring structures are all six members.

In order to improve the dispersion and stability of the composition, the content of the compound whose side chain is an alkyl group and an alkoxy group is better. Relative to the total mass of the above composition, it is preferable that the side chain be an alkyl group and alkoxy group The content of the compound is set to 85% or more, preferably 87% or more, preferably 90% or more, preferably 93% or more, preferably 95% or more, preferably 98% or more, More preferably, it is set to substantially 100%. Substantially 100% refers to 100% after removing polymerizable compounds, stabilizers and additional impurities mixed in.

In order to suppress the deterioration caused by the oxidation of the composition, the content of the compound having a cyclohexenylene group as a ring structure is preferably small, and relative to the total mass of the above composition, it is preferable that the compound having a cyclohexenylene group The content of the compound is 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and still more preferably substantially no compound having a cyclohexenylene group.

When focusing on the improvement of viscosity and the improvement of Tni, it is better that the content of the compound having "2-methylbenzene-1,4-diyl whose hydrogen atom can be substituted with halogen" in the molecule is less, compared to the above The total mass of the composition is preferably such that the content of the compound having 2-methylbenzene-1,4-diyl group in the molecule is 10% or less, preferably 8% or less, more preferably 5 % Or less, preferably 3% or less, and still more preferably substantially no compound having 2-methylbenzene-1,4-diyl group in the molecule.

In this case, the so-called "substantially not contained" means that it does not contain unless it is intentionally contained.

_{The average elastic constant (K AVG} ) of the liquid crystal composition used in the present invention is preferably 10 to 25, and as the lower limit value thereof, it is preferably 10, preferably 10.5, preferably 11, preferably 11.5, which is more Preferably it is 12, preferably 12.3, preferably 12.5, preferably 12.8, preferably 13, preferably 13.3, preferably 13.5, preferably 13.8, preferably 14, preferably 14.3, more Preferably it is 14.5, preferably 14.8, preferably 15, preferably 15.3, preferably 15.5, preferably 15.8, preferably 16, preferably 16.3, preferably 16.5, preferably 16.8, more Preferably it is 17, more preferably 17.3, more preferably 17.5, more preferably 17.8, more preferably 18, as its upper limit, preferably 25, more preferably 24.5, more preferably 24, more preferably 23.5, more Preferably it is 23, preferably 22.8, preferably 22.5, preferably 22.3, preferably 22, preferably 21.8, preferably 21.5, preferably 21.3, preferably 21, preferably 20.8, more Preferably it is 20.5, preferably 20.3, preferably 20, preferably 19.8, preferably 19.5, preferably 19.3, preferably 19, preferably 18.8, preferably 18.5, preferably 18.3, more Preferably it is 18, preferably 17.8, preferably 17.5, preferably 17.3, preferably 17. When emphasis is placed on reducing power consumption, it is effective to suppress the amount of backlight (backlight) light, and the liquid crystal display element is preferably to increase the light transmittance. Therefore, it is preferable to set the value of _{K AVG to be low.} When it is important to improve the response speed, it is preferable to set the value of _{K AVG to be higher.} ･Polymerizable compound The liquid crystal composition of the present invention may contain a polymerizable compound in order to produce a liquid crystal display element such as a PS mode, a lateral electric field type PSA mode, or a lateral electric field type PSVA mode. Examples of polymerizable compounds that can be used include photopolymerizable monomers that are polymerized by energy rays such as light. Examples of the structure include biphenyl derivatives, triphenyl derivatives, etc., which have multiple six-member bonds. The polymerizable compound of the liquid crystal skeleton of the ring.

More specifically, a polymerizable compound (polymerizable monomer) represented by the general formula (P) can be cited as a preferable one.

(In the above general formula (P), R ^p1 represents a hydrogen atom, a fluorine atom, a cyano group, an alkyl group with 1 to 15 carbon atoms, or -Sp ^p2 -P ^p2 , one of the alkyl groups or the non-adjacent 2 More than one -CH ₂ -can also be independently substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, one of the alkyl groups or Two or more hydrogen atoms may be independently substituted by cyano, fluorine or chlorine atoms. P ^p1 and P ^p2 are independent of each other and represent any of the general formulas (P ^p1 -1) to (P ^p1 -9) One.

(In the formula, R ^p11 and R ^p12 are independent of each other and represent a hydrogen atom, an alkyl group with 1 to 5 carbon atoms, or a halogenated alkyl group with 1 to 5 carbon atoms, and W ^p11 represents a single bond, -O-, -COO- Or methylene group, t ^p11 represents 0, 1, or 2, and when there are multiple R ^p11 , R ^p12 , W ^p11 and/or t ^p11 in the molecule, they may be the same or different), Sp ^p1 and Sp ^p2 Respectively independent, representing a single bond or spacer, Z ^p1 and Z ^p2 are respectively independent, representing a single bond, -O-, -S-, -CH ₂ -, -OCH ₂ -, -CH ₂ O-, -CO-, -C ₂ H ₄ -, -COO-, -OCO-, -OCOOCH ₂ -, -CH ₂ OCOO-, -OCH ₂ CH ₂ O-, -CO-NR ^ZP1 -, -NR ^ZP1 -CO-, -SCH ₂ －, －CH ₂ S－, －CH＝CR ^ZP1 －COO－, －CH＝CR ^ZP1 －OCO－, －COO－CR ^ZP1 ＝CH－, ^{－OCO－CR ZP1} ＝CH－, －COO－CR ^ZP1 =CH-COO-, -COO-CR ^ZP1 =CH-OCO-, -OCO-CR ^ZP1 =CH-COO-, -OCO-CR ^ZP1 =CH-OCO-, -(CH ₂ ) ₂ -COO-,- (CH ₂ ) ₂ -OCO-, -OCO- (CH ₂ ) ₂ -,-(C=O) -O- (CH ₂ ) ₂ -, -CH=CH-, -CF=CF-, -CF= CH-, -CH=CF-, -CF ₂ -, -CF ₂ O-, -OCF ₂ -, -CF ₂ CH ₂ -, -CH ₂ CF ₂ -, -CF ₂ CF ₂ -or -C≡C －(In the formula, R ^{ZP1 is} independent and represents a hydrogen atom or an alkyl group with 1 to 4 carbon atoms. When there are more than one R ^ZP1 in the molecule, they may be the same or different), A ^p1 , A ^p2 and A ^{p3 is} independent, and represents a group in the group consisting of ^{radicals (a p} ) ~ group (c ^{p ), (a p} ) 1,4-cyclohexylene (one -CH _{2 present in this group)} -Or two or more non-adjacent -CH ₂ -can be substituted by -O-), (b ^p ) 1,4-phenylene (1 in this group-CH = or 2 non-adjacent The above -CH= can be substituted by -N=), and (c ^p ) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl, decalin- 2,6-diyl, phenanthrene-2,7-diyl or anthracene-2,6-diyl (one of these groups-CH = or two or more non-adjacent-CH = can be －N=Substitute); the above-mentioned base (a ^p ), base (b ^p ) and base (c ^p ) One or two or more hydrogen atoms present in each of them may be independently substituted by halogen atoms, cyano groups, alkyl groups with 1 to 8 carbon atoms, or -Sp ^p2 -P ^p2 . One of the alkyl groups One or more than two non-adjacent -CH ₂ -can be independently replaced by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, m ^p1 Represents 0, 1, 2 or 3, and when there are plural Z ^p1 , A ^p2 , Sp ^p2 and/or P ^p2 in the molecule, they can be the same or different. A ^p3 is 0 in m ^{p1 and A p1} is In the case of phenanthrene-2,7-diyl or anthracene-2,6-diyl, it means a single bond). In the formula (P), R ^{p1 is} preferably -Sp ^p2 -P ^p2 .

It is ^{preferable that P p1} and P ^p2 each independently represent any one of formula (P ^p1-1 ) to formula (P ^p1-3 ), preferably (P ^p1-1 ).

R ^p11 and R ^p12 are independent of each other and are preferably a hydrogen atom or a methyl group.

t ^{p11 is} preferably 0 or 1.

W ^{p11 is} preferably a single bond, methylene group or ethylene group.

m ^{p1 is} preferably 0, 1, or 2, preferably 0 or 1.

Z ^p1 and Z ^p2 are independent of each other, preferably a single bond, -OCH ₂ -, -CH ₂ O-, -CO-, -C ₂ H ₄ -, -COO-, -OCO-, -COOC ₂ H _4- , -OCOC ₂ H ₄ -, -C ₂ H ₄ OCO-, -C ₂ H ₄ COO-, -CH=CH-, -CF ₂ -, -CF ₂ O-,-(CH ₂ ) ₂ -COO- ,-(CH ₂ ) _2- OCO -,-OCO-(CH ₂ ) ₂ -,-CH = CH-COO -,-COO-CH = CH -,-OCOCH = CH -,-COO-(CH ₂ ) ₂ -, -OCF ₂ -or -C≡C-, preferably a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-, -COOC ₂ H ₄ -, -OCOC ₂ H ₄ -, -C ₂ H ₄ OCO-, -C ₂ H ₄ COO-, -CH=CH-, -(CH ₂ ) ₂ -COO-, -(CH ₂ ) ₂ -OCO -, -OCO- (CH ₂ ) ₂ -, -CH=CH-COO-, -COO-CH=CH-, -OCOCH=CH-, -COO- (CH ₂ ) ₂ -or -C≡C-, Preferably, only one of the molecules present in the molecule is -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-, -COOC ₂ H ₄ -, -OCOC ₂ H _4- , -C ₂ H ₄ OCO-, -C ₂ H ₄ COO-, -CH=CH-, -(CH ₂ ) ₂ -COO-, -(CH ₂ ) ₂ -OCO-, -OCO- (CH ₂ ) ₂ -, -CH=CH-COO-, -COO-CH=CH-, -OCOCH=CH-, -COO- (CH ₂ ) ₂ -or -C≡C-, all others are single bonds, more Preferably, only one in the molecule is -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO- or -OCO-, and all others are single bonds, preferably all are single bond.

Furthermore, it is preferable that only one of Z ^p1 and Z ^p2 existing in the molecule is selected from -CH=CH-COO-, -COO-CH=CH-, -(CH ₂ ) ₂ -COO-,- (CH ₂ ) ₂ -OCO-, -O-CO- (CH ₂ ) ₂ -, -COO- (CH ₂ ) ₂ -The linking group in the group consisting of, the others are single bonds.

Sp ^p1 and Sp ^p2 are independent of each other and represent a single bond or a spacer. The spacer is preferably an alkylene group with 1 to 30 carbon atoms. The -CH ₂ -in the alkylene group is not directly bonded to each other as long as the oxygen atoms are not directly bonded to each other. It can also be substituted by -O-, -CO-, -COO-, -OCO-, -CH=CH- or -C≡C-, and the hydrogen atom in the alkylene group can also be substituted by a halogen atom, preferably It is a straight chain alkylene group with 1 to 10 carbon atoms or a single bond. A ^p1 , A ^p2 and A ^p3 are independent of each other, and are preferably 1,4-phenylene or 1,4-cyclohexylene, and preferably 1,4-phenylene. In order to improve the compatibility with the liquid crystal compound, the 1,4-phenylene group is preferably substituted with one fluorine atom, one methyl group or one methoxy group.

Regarding the total content of the compound represented by the formula (P), relative to the composition containing the compound represented by the formula (P) in the present case, it preferably contains 0.05-10%, preferably 0.1-8%, and preferably 0.1 ~5%, preferably 0.1-3%, preferably 0.2-2%, preferably 0.2-1.3%, preferably 0.2-1%, preferably 0.2-0.56%.

The preferable lower limit value of the total content of the compound represented by the formula (P) is 0.01%, 0.03%, 0.05%, 0.08%, 0.1% relative to the composition containing the compound represented by the formula (P) in this case , 0.15%, 0.2%, 0.25%, 0.3%.

The preferable upper limit of the total content of the compound represented by formula (P) is 10%, 8%, 5%, 3%, 1.5 relative to the composition containing the compound represented by formula (P) in this case %, 1.2%, 1%, 0.8%, 0.5%.

If the content is small, the effect of adding the compound represented by formula (P) is difficult to show, and the alignment control power of the liquid crystal composition is weak, or the alignment control power becomes weak with the passage of time. If it is too large, it will cause After curing, the remaining amount increases, curing takes time, and the reliability of the liquid crystal is reduced. Therefore, the content is set in consideration of the balance of these.

As a preferable example of the compound represented by formula (P), the polymerizable compound represented by following formula (P-1-1)-formula (P-1-46) is mentioned.

(In the formula, P ^p11 , P ^p12 , Sp ^p11 and Sp ^p12 represent the same meaning as ^{P p1} , P ^p2 , Sp ^p1 and Sp ^p2 in the general formula (P)). As a preferable example of the compound represented by general formula (P) of this invention, the polymerizable compound represented by following formula (P-2-1)-formula (P-2-29) is mentioned.

(In the formula, P ^p21 , P ^p22 , Sp ^p21 and Sp ^p22 represent the same meaning as ^{P p1} , P ^p2 , Sp ^p1 and Sp ^p2 in the general formula (P)). As a preferable example of the compound represented by general formula (P) of this invention, the polymerizable compound represented by following formula (P-3-1)-formula (P-3-15) is mentioned.

(In the formula, P ^p31 , P ^p32 , Sp ^p31 and Sp ^p32 represent the same meaning as ^{P p1} , P ^p2 , Sp ^p1 and Sp ^p2 in the general formula (P)). As a preferable example of the compound represented by general formula (P) of this invention, the polymerizable compound represented by following formula (P-4-1)-formula (P-4-19) is mentioned.

(In the formula, P ^p41 , P ^p42 , Sp ^p41 and Sp ^{p42 represent the same meanings as P p1} , P ^p2 , Sp ^p1 and Sp ^p2 in the general formula (P), and a plurality of P ^p42 and Sp ^p42 may be the same respectively, also Can be different). When a polymerizable monomer is used in the present invention, one type of polymerizable monomer may be used alone, or two or more types of polymerizable monomer may be used in combination. Among them, by using two or more types of polymerizable monomers with different polymerization reaction rates in combination, the polymerization reaction rate can be appropriately suppressed, the amount of residual monomers can be reduced, and an appropriate pretilt angle can be imparted, which is preferable. In addition, from the viewpoint of the balance between storage stability and polymerization reaction rate, it is preferable to use two or more kinds of polymerizable monomers in combination. When using two or more types of polymerizable monomers, it is preferable to use two or more types of compounds represented by the above formula (P) in combination.

Regarding the total content of the compounds represented by the formula (P), relative to the composition containing these compounds, the content is preferably 0.05-10%, more preferably 0.1-8%, more preferably 0.1-5%, Preferably, it contains 0.1-3%, preferably 0.2-2%, preferably 0.2-1.3%, preferably 0.2-1%, preferably 0.2-0.56%.

The preferable lower limit values of the total content of the compounds represented by formula (P) are 0.01%, 0.03%, 0.05%, 0.08%, 0.1%, 0.15%, 0.2%, relative to the composition containing these compounds, 0.25%, 0.3%.

The preferable upper limit of the total content of the compounds represented by formula (P) is 10%, 8%, 5%, 3%, 1.5%, 1.2%, 1% relative to the composition containing these compounds , 0.8%, 0.5%.

If the content is small, it is difficult to show the effect of adding the compound represented by formula (P), and problems such as weak alignment control of the liquid crystal composition or weakening with time may occur. If the content is too large, the residual amount after curing may change. Many problems, such as time-consuming curing and reduced reliability of liquid crystal. Therefore, the content is set in consideration of the balance of these. ･Other additives The composition in the present invention may further contain a compound represented by general formula (Q).

(In the formula, R ^Q represents a linear or branched alkyl group with 1 to 22 carbon atoms. One or more CH ₂ groups in the alkyl group can be- O－, －CH＝CH－, －CO－, －OCO－, －COO－, －C≡C－, －CF ₂ O－, －OCF ₂ － substituted, the hydrogen atom in ^{R Q can also be 4－} Hydroxy-3,5-di-tertiary butylphenyl substituted, M ^Q represents trans-1,4-cyclohexylene, 1,4-phenylene or single bond, trans-1,4-cyclohexylene One or two non-adjacent ones -CH ₂ -can also be replaced by -O-). R ^Q represents a straight-chain or branched-chain alkyl group having 1 to 22 carbon atoms. One or more of the CH ₂ groups in the alkyl group can be -O-,-in a way that oxygen atoms are not directly adjacent to each other. CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -substituted, preferably a linear alkyl group having 1 to 10 carbon atoms, straight-chain alkyl group, a linear alkyl group is CH ₂ -OCO- or -COO- the substituted, branched alkyl, branched alkoxy group, a CH ₂ group is -OCO- or -COO- Substituted branched chain alkyl, more preferably straight chain alkyl with 1 to 20 carbon atoms, straight chain alkyl with one CH ₂ group substituted by -OCO- or -COO-, branched chain alkyl, branched alkyl An oxy group, a _{branched alkyl group in which a CH 2} group is substituted by -OCO- or -COO-. M ^Q represents trans-1,4-cyclohexylene, 1,4-phenylene or a single bond, preferably trans-1,4-cyclohexylene or 1,4-phenylene.

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

In the formula, R ^{Q1 is} preferably a linear or branched alkyl group with 1 to 10 carbon atoms, R ^{Q2 is} preferably a linear or branched alkyl group with 1 to 20 carbon atoms, and R ^Q3 is more Preferably, it is a linear alkyl group with 1 to 8 carbon atoms, a branched chain alkyl group, a linear alkoxy group or a branched alkoxy group, and L ^{Q is} preferably a linear alkyl group with 1 to 8 carbon atoms or a branched chain. Alkylene. Among the compounds represented by general formula (Q-a) to general formula (Q-d), compounds represented by general formula (Q-c) and general formula (Q-d) are more preferable.

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

In addition, as the antioxidant or light stabilizer that can be used in the present invention, more specifically, the compounds represented by the following (III-1) to (III-40) are preferred.

(In the formula, n represents an integer from 0 to 20). The liquid crystal composition of the present invention preferably contains one or more compounds represented by general formula (Q) or compounds selected from general formulas (III-1) to (III-40), more preferably It contains 1 to 5 types, and the content is preferably 0.001 to 1%, more preferably 0.001 to 0.1%, and particularly preferably 0.001 to 0.05%.

Generally, various parameters calculated from the physical properties of the liquid crystal composition are used as methods to express the characteristics of the liquid crystal display element. Among them, there are the parameter γ ₁ /K _{33 that governs the response speed, the parameter K 11} /K ₃₃ that governs the urgency of the electro-optical effect, and the parameter |K ₃₃ /Δε| that governs the driving voltage. The liquid crystal composition of the present invention has high-speed response, low driving voltage, good low-temperature storage properties, wide viewing angle, and high transmittance.

Therefore, the parameter γ ₁ /K ₃₃ governing the response speed is preferably 10.0 mPa･s･pN ^-1 or less, preferably 9.8 mPa･s･pN ^-1 or less, and preferably 9.5 mPa･s･pN ^-1 or less , Preferably 9.2 mPa･s･pN ^-1 or less, particularly preferably 9.0 mPa･s･pN ^-1 or less.

_{The parameter K 11} /K ₃₃ governing the severity of the electro-optical effect is preferably 1.20 or less, preferably 1.15 or less, preferably 1.10 or less, preferably 1.07 or less, preferably 1.05 or less, preferably 1.03 or less, It is more preferably 1.00 or less, particularly preferably 0.98 or less, and most preferably 0.96 or less. By using the compound (i) and the compound (ii) of the present invention in combination, a liquid crystal composition _{having a K 11} /K _{33 value within the above range can be obtained.}

The parameter governing the driving voltage |K ₃₃ /Δε| is preferably 6.0 pN or less, preferably 5.7 pN or less, preferably 5.5 pN or less, preferably 5.3 pN or less, and particularly preferably 5.1 pN or less.

The liquid crystal composition of the present invention is endowed with liquid crystal alignment ability by "polymerizing the polymerizable compound contained in ultraviolet radiation", and is used in a liquid crystal display element that uses the birefringence of the composition to control the amount of light transmission . ＜Liquid crystal display element＞ The liquid crystal display element using the composition of the present invention is useful for both high-speed response and suppression of display defects, especially useful for liquid crystal display elements for active matrix driving, and can be applied to VA mode, PSVA mode, PSA mode, and IPS mode , Or ECB mode liquid crystal display element. Among them, the liquid crystal composition of the present invention is more suitable for PSVA mode or PSA mode liquid crystal display devices.

The liquid crystal display element of the present invention preferably has "a first substrate and a second substrate arranged facing each other", "a common electrode provided on the first substrate or the second substrate", and "a common electrode provided on the first substrate or the second substrate". The second substrate has a pixel electrode with a thin film transistor" and a "liquid crystal layer provided between the first substrate and the second substrate and containing a liquid crystal composition". Optionally, an alignment film for controlling the alignment direction of liquid crystal molecules may be provided on the opposite surface side of at least one of the first substrate and/or the second substrate by abutting against the above-mentioned liquid crystal layer. As the alignment film, a vertical alignment film or a horizontal alignment film can be appropriately selected according to the driving mode of the liquid crystal display element, and a rubbing alignment film (for example, polyimide) or a photo-alignment film (decomposable polyimide, etc.) can be used ) And other well-known alignment films. In addition, the color filter may be appropriately provided on the first substrate or the second substrate, and the color filter may be provided on the above-mentioned pixel electrode or the common electrode.

The various members and manufacturing methods of the liquid crystal display element of the present invention are not particularly limited, and ordinary members or manufacturing methods can be used to construct and manufacture the liquid crystal display element.

When the liquid crystal composition of the present invention contains a polymerizable compound, the method of polymerizing the polymerizable compound is not particularly limited. Among them, the following method is preferred: in order to obtain good alignment properties of liquid crystals, it is more desirable to perform polymerization at an appropriate polymerization rate. Therefore, by singly or combined use or sequentially irradiating active energy rays such as ultraviolet rays or electron rays, Make it converge. When using ultraviolet light, either a polarized light source or a non-polarized light source can be used. In addition, when the liquid crystal composition is polymerized in a state in which the liquid crystal composition is sandwiched between two substrates, at least the substrate on the side of the irradiation surface must have appropriate transparency with respect to the active energy rays. In addition, the following method can also be used: use a mask to polymerize only a specific part when illuminating, change the conditions such as electric field, magnetic field, or temperature to change the alignment state of the unpolymerized part, and further irradiate active energy rays to polymerize it. . In particular, when performing ultraviolet exposure, it is preferable to apply a direct current electric field or an alternating current electric field to the liquid crystal composition and simultaneously perform ultraviolet exposure. Furthermore, the applied AC electric field is preferably an AC with a frequency of 1 Hz to 10 kHz, more preferably a frequency of 60 Hz to 10 kHz, and the voltage is selected depending on the desired pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the PSV type or PSVA type liquid crystal display element, from the viewpoint of alignment stability and contrast, it is preferable to control the pretilt angle to 80 degrees to 89.9 degrees.

In PSA-type or PSVA-type liquid crystal display devices, after the device is manufactured, the polymerizable compound does not polymerize but remains directly, and IS will occur. The amount of the remaining polymerizable compound is preferably 20 ppm or less, more preferably 15 ppm or less, particularly preferably 10 ppm or less, and particularly preferably less than the lower detection limit or 0.

The temperature during the irradiation of active energy rays such as ultraviolet rays or electron rays used when polymerizing the polymerizable compound contained in the liquid crystal composition of the present invention is not particularly limited. For example, when the liquid crystal composition of the present invention is applied to a liquid crystal display element having a "substrate with an alignment film", it is preferably within a temperature range in which the liquid crystal composition maintains a liquid crystal state. That is, it is preferable to polymerize it at 15-50 degreeC.

As the ultraviolet-generating lamp, metal halide lamps, high-pressure mercury lamps, ultra-high-pressure mercury lamps, etc. can be used, and the ultra-high-pressure UV lamps of USHIO Corporation and the fluorescent ultraviolet lamps of TOSHIBA Corporation are preferred. In addition, as the wavelength of the ultraviolet rays to be irradiated, it is preferable to irradiate ultraviolet rays in a wavelength range other than the absorption wavelength range of the liquid crystal composition, and if necessary, it is preferable to filter out the ultraviolet rays of a shorter wavelength for use. The intensity of the irradiated ultraviolet rays is preferably 0.1 mW/cm ² to 100 W/cm ² , more preferably 2 mW/cm ² to 50 W/cm ² . The energy of the irradiated ultraviolet rays can be adjusted appropriately, preferably 10 mJ/cm ² to 500 J/cm ² , more preferably 100 mJ/cm ² to 200 J/cm ² . [Example]

The following examples will further describe the present invention, but the present invention is not limited to these examples. In addition, "%" in the composition of the following examples and comparative examples means "mass %". For the description of the compounds in the examples, the following codes are used.

Unless otherwise stated, the physical properties are measured according to the method described in the "Electronic Information Technology Industry Association Standard JEITA ED-2521B (revised in March 2009, issued by the Electronic Information Technology Industry Association)".

＜Side chain structure＞

[Table 1] Codename Chemical structure -N －C _n H _2n+1 n－ C _n H _2n+1 － －On －OC _n H _2n+1 nO- C _n H _2n+1 O－ -V －CH＝CH ₂ V－ CH ₂ ＝CH－ －V1 －CH＝CH－CH ₃ 1V－ CH ₃ －CH＝CH－ －2V －CH ₂ －CH ₂ －CH＝CH ₂ V2- CH ₂ ＝CH－CH ₂ －CH ₂ － －2V1 －CH ₂ －CH ₂ －CH＝CH－CH ₃ 1V2- CH ₃ －CH＝CH－CH ₂ －CH ₂ －

(Among them, n in the table is a natural number)

<Link structure>

[Table 2] Codename Chemical structure －N－ －C _n H _2n － －NO－ －C _n H _2n O－ －On－ －OC _n H _2n － －COO－ －C(=O)－O－ －OCO－ －O－C(=O)－ －V－ －CH＝CH－ －NV－ －C _n H _2n －CH＝CH－ －Vn－ －CH＝CH－C _n H _2n － －T－ －C≡C－ －CF2O－ －CF ₂ －O－ －OCF2－ －O－CF ₂ －

(Among them, n in the table is a natural number) (Ring structure)

In the examples, the measured characteristics are as follows.

Tni: nematic-isotropic liquid phase transition temperature (°C) Δn: refractive index anisotropy at 20°C Δε: dielectric anisotropy at 20°C γ ₁ : rotational viscosity at 20°C (mPa ･S) K ₁₁ : Elastic constant of diffusion at 20°C (pN) K ₃₃ : Elastic constant of bending at 20°C (pN)

<Examples 1 to 9, Comparative Examples 1 to 3> The liquid crystal compositions (LC-1) to (LC-9) and (LC-A) to (LC-C) were prepared, and their physical properties were measured. The structure and physical properties of the liquid crystal composition are shown in the table below.

[table 3] Example No. 1 2 3 4 5 6 Liquid crystal composition LC-1 LC-2 LC-3 LC-4 LC-5 LC-6 3-Cy-Ph-O1 twenty four 25 twenty four twenty four twenty four twenty three 1V－Cy－Cy－1O－Ph5－O2 6.5 6 6 8 6 8 V－Cy－1O－Ph5－O1－Cy－Cy－2 5 3－Cy－1O－Ph5－O1 8.5 8 8.5 3 7.5 3－Cy－1O－Ph5－O2 4 9.5 2－Cy－Cy－1O－Ph5－O2 2.5 3－Cy－Cy－1O－Ph5－O2 15 18.5 10.5 21.5 12 14.5 2－Cy－Ph－Ph5－O2 3 3-Cy-Ph-Ph5-O2 11.5 12.5 12.5 5 12.5 8 2－Ph－2－Ph－Ph5－O2 5 5 3－Ph－2－Ph－Ph5－O2 5 5 3-Cy-Cy-2 16 15.5 21.5 15.5 twenty one 15 5-Ph-Ph-1 6 5.5 7 6 3-Cy-Ph-Ph-1 5 4 2 5 2 3-Cy-Ph-Ph-2 2 5 9 2 9 3-Cy-Ph-Ph-O2 3 5 Total (%) 100 100 100 100 100 100 Tni [℃] 74 74 74 74 74 75 Δn 0.107 0.107 0.106 0.104 0.106 0.105 Δε -3.1 -3.1 -3.1 -3.2 -3.1 -3.3 γ ₁ [mPa･s] 117 120 118 118 116 121 K ₁₁ [pN] 13.4 13.7 13.3 13.5 13.6 14.3 K ₃₃ [pN] 15.3 15.1 15.0 14.8 15.0 15.1 γ ₁ ／K ₃₃ [mPa･s･pN ^-1 ] 7.6 7.9 7.9 8.0 7.7 8.0 K ₁₁ ／K ₃₃ 0.88 0.91 0.89 0.91 0.91 0.95 |K ₃₃ ／Δε| [pN] 5.0 4.9 4.9 4.7 4.9 4.6

[Table 4] Example No. 7 8 9 Liquid crystal composition LC-7 LC-8 LC-9 3-Cy-Ph-O1 10 20 18 1V－Cy－Cy－1O－Ph5－O2 7 V－Cy－1O－Ph5－O1－Cy－Cy－2 3 3-Cy-Cy-V 30 10 3-Cy-Cy-V-1 6 9.5 3－Cy－1O－Ph5－O2 10 3－Cy－Cy－1O－Ph5－O2 12 3－Ph－Ph5－O2 13 3-Cy-Ph5-O2 8 V－Cy－Ph5－O2 5 3－Cy－Cy－Ph5－O2 13 15 V－Cy－Cy－Ph5－O2 7 1V－Cy－Cy－2－Ph5－O2 5 2－Cy－Ph－Ph5－O2 3 8 3-Cy-Ph-Ph5-O2 10 10 2－Ph－2－Ph－Ph5－O2 6.5 6 3－Ph－2－Ph－Ph5－O2 6.5 5 3-Cy-Cy-2 twenty three 5-Ph-Ph-1 2 2 3-Cy-Cy-Ph-1 7.5 3-Cy-Ph-Ph-1 5 3-Cy-Ph-Ph-2 4 Total (%) 100 100 100 Tni [℃] 78 74 75 Δn 0.100 0.108 0.106 Δε -3.1 -3.2 -3.1 γ ₁ [mPa･s] 105 120 117 K ₁₁ [pN] 15.0 14.1 13.9 K ₃₃ [pN] 17.2 15.0 15.2 γ ₁ ／ K ₃₃ [mPa･s･pN ^{- 1} ] 6.1 8.0 7.7 K ₁₁ / K ₃₃ 0.87 0.94 0.91 |K ₃₃ ／ Δε| [pN] 5.5 4.7 4.9

[table 5] Comparative example No. 1 2 3 Liquid crystal composition LC－A LC－B LC－C 3-Cy-Ph-O1 7 V－2－Cy－Ph－1 5 1V－Cy－Cy－1O－Ph5－O2 8 V－Cy－1O－Ph5－O1－Cy－Cy－2 3-Cy-Cy-V-1 10 3－Cy－1O－Ph5－O1 6 3－Cy－1O－Ph5－O2 6.5 12.5 2－Cy－Cy－1O－Ph5－O2 15 3－Cy－Cy－1O－Ph5－O2 1.8 15.5 3－Ph－Ph5－O2 18 3-Cy-Ph5-O2 12 3－Cy－Cy－Ph5－O2 10 2－Cy－Ph－Ph5－O2 6 4 3-Cy-Ph-Ph5-O2 8 3 3-Cy-Ph-Ph5-O3 7 3－Ph－2－Ph－Ph5－O2 9 3-Ph-Ph5-Ph-2 4 3-Cy-Cy-2 18 twenty two 3-Cy-Cy-4 7.5 4 8 3-Cy-Cy-5 5 7 5-Ph-Ph-1 12.7 14 3-Cy-Cy-Ph-1 8 3-Cy-Ph-Ph-1 5 3-Cy-Ph-Ph-2 6 2 8 5-Cy-Ph-Ph-2 4.5 Total (%) 100 100 100 Tni [℃] 75 75 74 Δn 0.112 0.106 0.108 Δε -3.2 -3.2 -3.0 γ ₁ [mPa･s] 121 116 110 K ₁₁ [pN] 14.9 16.6 15.7 K ₃₃ [pN] 12.3 15.0 14.8 γ ₁ ／K ₃₃ [mPa･s･pN ^{- 1} ] 9.8 7.7 7.4 K ₁₁ ／K ₃₃ 1.21 1.11 1.06 |K ₃₃ ／Δε| [pN] 3.9 4.7 4.9

It can be seen that, compared with the liquid crystal compositions (LC-A) to (LC-C) of Comparative Examples 1 to 3, the liquid crystal compositions (LC-1) to (LC-9) of Examples 1 to 7 dominate the response speed The parameter γ ₁ /K _{33 is small enough, the parameter K 11} /K ₃₃ that governs the urgency of the electro-optical effect is small enough, and the parameter |K ₃₃ /Δε| that governs the driving voltage is low enough for the liquid crystal composition. In addition, it can be seen that the wavelength dispersion of Δn is also small enough.

In addition, it can be seen that, compared with the examples, LC-A (Comparative Example 1), LC-B (Comparative Example 2), and LC-C (Comparative Example 3) have parameters γ ₁ /K ₃₃ , which govern the response speed, and control electrical _{The parameter K 11} /K _{33 of the} severity of the optical effect _{, the parameter |K 33} /Δε|, or the wavelength dispersion of Δn, which governs the driving voltage, are all bad, or some of them are bad.

Then, by vacuum injection method, the liquid crystal compositions shown in the following table were respectively injected into the cell gap 3.0μm and coated with a polyimide alignment film that induces vertical alignment with ITO cells, thereby obtaining vertical alignment ( VA) Liquid crystal display element. The various evaluation results are shown below.

[Table 6] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 LC-1 LC-2 LC-3 LC-4 LC-5 LC-6 Evaluation results Response speed 〇 〇 〇 〇 〇 〇 Drive voltage ◎ ◎ ◎ ◎ ◎ ◎ Low-temperature storage ◎ ◎ ◎ ◎ ◎ ◎ Viewing angle 〇 〇 〇 〇 〇 〇 Penetration rate ◎ ◎ ◎ ◎ ◎ ◎

[Table 7] Example 7 Example 8 Example 9 LC-7 LC-8 LC-9 Evaluation results Response speed 〇 〇 〇 Drive voltage 〇 ◎ ◎ Low-temperature storage ◎ ◎ 〇 Viewing angle 〇 〇 〇 Penetration rate 〇 〇 ◎

[Table 8] Comparative example 1 Comparative example 2 Comparative example 3 LC－A LC－B LC－C Evaluation results Response speed X 〇 〇 Drive voltage X 〇 〇 Low-temperature storage 〇 X 〇 Viewing angle X X X Penetration rate X X X

It was confirmed that the VA liquid crystal display element using the polymerizable liquid crystal composition of the example exhibited high-speed response, low drive voltage, good low-temperature storage properties, wide viewing angle, and high transmittance. ○ means those showing sufficient performance for the required characteristics, and ◎ means those showing particularly excellent performance. In the comparative example, ○ in the table indicates that the liquid crystal display element obtained in the example is confirmed to show the same level of sufficient performance, and × indicates that it is confirmed that the liquid crystal display element obtained in the example is significantly better than the liquid crystal display element obtained in the example Bad ones.

From the foregoing, it can be seen that the liquid crystal composition of the present invention can be a liquid crystal composition that has high-speed response, low driving voltage, good low-temperature storage properties, wide viewing angle, and high transmittance. <Example 10 to Example 45> Add polymerizable compounds represented by RM-1, RM-2, RM-3, RM-4, RM-5, RM-6, and RM-7 to the prepared liquid crystal compositions LC-1 to LC-9 As the polymerizable compound, liquid crystal compositions MLC-1 to MLC-36 (Examples 10 to 45) containing polymerizable compounds were prepared.

The structure of the obtained polymerizable compound-containing liquid crystal composition is shown below.

[Table 9] Example 10 Example 11 Example 12 Example 13 MLC-1 MLC-2 MLC-3 MLC-4 Liquid crystal composition LC-1 99.7% LC-2 99.7% LC-3 99.7% LC-4 99.7% Polymeric compound RM-1 0.3% 0.3% 0.3% 0.3% total 100.0% 100.0% 100.0% 100.0%

[Table 10] Example 14 Example 15 Example 16 Example 17 Example 18 MLC-5 MLC-6 MLC-7 MLC-8 MLC-9 Liquid crystal composition LC-5 99.7% LC-6 99.7% LC-7 99.7% LC-8 99.7% LC-9 99.7% Polymeric compound RM-1 0.3% 0.3% 0.3% 0.3% 0.3% total 100.0% 100.0% 100.0% 100.0% 100.0%

[Table 11] Example 19 Example 20 Example 21 Example 22 MLC-10 MLC-11 MLC-12 MLC-13 Liquid crystal composition LC-1 99.7% LC-2 99.7% LC-3 99.7% LC-4 99.7% Polymeric compound RM-2 0.3% 0.3% 0.3% 0.3% total 100.0% 100.0% 100.0% 100.0%

[Table 12] Example 23 Example 24 Example 25 Example 26 Example 27 MLC-14 MLC-15 MLC-16 MLC-17 MLC-18 Liquid crystal composition LC-5 99.7% LC-6 99.7% LC-7 99.7% LC-8 99.7% LC-9 99.7% Polymeric compound RM-2 0.3% 0.3% 0.3% 0.3% 0.3% total 100.0% 100.0% 100.0% 100.0% 100.0%

[Table 13] Example 28 Example 29 Example 30 Example 31 MLC-19 MLC-20 MLC-21 MLC-22 Liquid crystal composition LC-1 99.7% LC-2 99.7% LC-3 99.7% LC-4 99.7% Polymeric compound RM-3 0.3% 0.3% 0.3% 0.3% total 100.0% 100.0% 100.0% 100.0%

[Table 14] Example 32 Example 33 Example 34 Example 35 Example 36 MLC-23 MLC-24 MLC-25 MLC－26 MLC-27 Liquid crystal composition LC-5 99.7% LC-6 99.7% LC-7 99.7% LC-8 99.7% LC-9 99.7% Polymeric compound RM-3 0.3% 0.3% 0.3% 0.3% 0.3% total 100.0% 100.0% 100.0% 100.0% 100.0%

[Table 15] Example 37 Example 38 Example 39 Example 40 MLC-28 MLC-29 MLC-30 MLC－31 Liquid crystal composition LC-1 99.7% LC-2 99.7% LC-3 99.7% LC-4 99.7% Polymeric compound RM-4 0.3% 0.3% 0.3% 0.3% total 100.0% 100.0% 100.0% 100.0%

[Table 16] Example 41 Example 42 Example 43 Example 44 Example 45 MLC－32 MLC-33 MLC-34 MLC-35 MLC-36 Liquid crystal composition LC-5 99.7% LC-6 99.7% LC-7 99.7% LC-8 99.7% LC-9 99.7% Polymeric compound RM-4 0.3% 0.3% 0.3% 0.3% 0.3% total 100.0% 100.0% 100.0% 100.0% 100.0%

Using the vacuum injection method, the liquid crystal composition containing the polymerizable compound was injected into the cell gap 3.0μm and coated with the polyimide alignment film that induces the vertical alignment. The ITO-bearing cell, thereby obtaining the vertical alignment (VA ) Liquid crystal display element. The obtained VA liquid crystal display element was exposed to 10J with a high-pressure mercury lamp with an intensity of ^{100mW/cm -2} (365nm) while applying a rectangular wave of 10V and 100Hz. Furthermore, 100J exposure is performed in the state of the voltage being cut off, thereby obtaining a polymer stabilized vertical alignment (PSVA) liquid crystal display device. It was confirmed that these PSVA liquid crystal display elements showed the same or more characteristics as those of the VA liquid crystal display elements produced in Examples 1-9.

<Example 46 to Example 59> To the obtained liquid crystal compositions LC-1 to LC-9, 2 or 3 compounds represented by RM-1 to RM-7 are added as polymerizable compounds at the contents shown in the table, and adjusted to a total of 100.0%, Thus, liquid crystal compositions MLC-37 to MLC-50 (Examples 46 to 59) containing polymerizable compounds were produced.

聚合性化合物 RM－7 0.03％ [Table 17] Example 46 Example 47 Example 48 Example 49 Example 50 Liquid crystal composition LC-1 MLC-37 MLC-38 MLC－39 MLC-40 MLC-41 Polymeric compound RM-1 0.2% Polymeric compound RM-2 0.25% 0.3% 0.25% 0.27% Polymeric compound RM-3 0.05% Polymeric compound RM-4 0.1% Polymeric compound RM-5 0.1% Polymeric compound RM-6 0.05%

Polymeric compound RM-7 0.03%

[Table 18] Example 51 Example 52 Example 53 Example 54 MLC-42 MLC-43 MLC-44 MLC-45 Liquid crystal composition LC-1 LC-2 LC-3 LC-4 Polymeric compound RM-1 Polymeric compound RM-2 0.27% Polymeric compound RM-3 0.3% 0.20% 0.25% Polymeric compound RM-4 Polymeric compound RM-5 0.1% 0.03% Polymeric compound RM-6 0.10% Polymeric compound RM-7 0.05%

[Table 19] Example 55 Example 56 Example 57 Example 58 Example 59 MLC-46 MLC-47 MLC-48 MLC－49 MLC-50 Liquid crystal composition LC-5 LC-6 LC-7 LC-8 LC-9 Polymeric compound RM-1 0.30% 0.20% Polymeric compound RM-2 0.20% 0.20% 0.20% Polymeric compound RM-3 0.10% Polymeric compound RM-4 0.10% Polymeric compound RM-5 0.05% 0.50% Polymeric compound RM-6 0.05% Polymeric compound RM-7 0.05% 0.50%

Using the vacuum injection method, the liquid crystal composition containing the polymerizable compound was respectively injected into the cell gap 3.0μm and coated with a polyimide alignment film that induces vertical alignment to have an ITO cell, thereby obtaining a VA liquid crystal display element . The obtained VA liquid crystal display element was exposed to 10J with a high-pressure mercury lamp with an intensity of ^{100mW/cm -2} (365nm) while applying a rectangular wave of 10V and 100Hz. Furthermore, 100J exposure is performed in the state where the voltage is cut off, thereby obtaining a PSVA liquid crystal display element. It was confirmed that these PSVA liquid crystal display elements showed the same or more characteristics as those of the VA liquid crystal display elements produced in Examples 1-9.

no

no

Claims (10)

A liquid crystal composition containing one or more compounds represented by general formula (i) and one or more compounds represented by general formula (ii),

(Wherein, R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms of, R ⁱ² carbon atoms of an alkoxy group having 1 to 8, R ⁱⁱ¹ carbon atoms of the alkenyl group having 2 to 8, R ⁱⁱ² carbon atoms An alkyl group of 1-8, one of the alkyl groups or two or more unadjacent -CH ₂ -s may be independently -CH=CH-, -C≡C-, -O-, -CO －, －COO－ or －OCO－ substitution, A ⁱⁱ¹ and A ⁱⁱ² are independent respectively, which means that the radical (a)～the radical (c) is selected from the group, (a) 1,4-cyclohexylene ( _{One -CH 2} -existing in the group or two or more non-adjacent -CH ₂ -may be substituted by -O-), (b) 1,4-phenylene (1 in the group -CH= or 2 or more non-adjacent -CH= may be substituted by -N=), and (c) 1,4-cyclohexenylene; the above-mentioned groups (a), (b) and groups ( c) It can also be independently substituted by a cyano group, a fluorine atom or a chlorine atom. Z ⁱⁱ¹ and Z ⁱⁱ² are independently each, representing a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡ C-, when there are a plurality of A ⁱⁱ¹ , A ⁱⁱ² , Z ⁱⁱ¹ and/or Z ⁱⁱ² , they may be the same or different, n ⁱⁱ¹ and n ⁱⁱ² are independent and represent an integer from 0 to 3, n ⁱⁱ¹ +n ⁱⁱ² is 1, 2 or 3). For example, the liquid crystal composition of claim 1, which contains one or more types. n ⁱⁱ¹ is an integer of 1 to 3, and at least one of ^{Z ii1} _{is -CH 2} CH ₂ -,-(CH ₂ ) ₄ -,- OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- Or a compound of -C≡C- is used as the compound represented by the above general formula (ii). The liquid crystal composition of claim 2, which contains one or more compounds represented by the general formula (ii-1) as the compound represented by the general formula (ii),

(In the formula, R ⁱⁱ¹¹ and R ⁱⁱ²¹ respectively represent the same meanings as ^{R ii1} and R ⁱⁱ² in formula (ii), ^{and n ii11} represents 1 or 2). The liquid crystal composition of any one of claims 1 to 3, which further contains one or more compounds represented by the general formula (N-1),

(In the formula, R ^N11 and R ^N12 are independent of each other and represent an alkyl group with 1 to 8 carbon atoms. One of the alkyl groups or two or more non-adjacent -CH ₂ -may be each independently by -C ≡C-, -O-, -CO-, -COO- or -OCO- substituted, A ^N11 and A ^N12 are independent respectively, which means to select the radical (a) ~ radical (d) in the group consisting of, ( a) 1,4-cyclohexylene (1 -CH ₂ -or 2 or more unadjacent -CH ₂ -can be substituted by -O- in the group), (b) 1,4-extension Phenyl (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted by -N=), (c) naphthalene-2,6-diyl, 1,2,3 ,4-Tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6- One -CH= or two or more non-adjacent ones -CH= which can be substituted by -N=), and (d) 1,4-cyclohexenylene; the above group (a), Group (b), group (c), and group (d) may be independently substituted by cyano, fluorine atom or chlorine atom. Z ^N11 and Z ^N12 are each independently, representing a single bond, -CH ₂ CH ₂ -,- (CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH= CH-, -CF=CF- or -C≡C-, n ^N11 and n ^N12 are independent of each other and represent an integer from 0 to 3, n ^N11 +n ^N12 is 1, 2 or 3, where there are plural A ^N11 ～A ^{In the case of N32} and Z ^N11 to Z ^N32 , they may be the same or different). Such as the liquid crystal composition of claim 4, which further contains one or more compounds represented by the general formula (L),

(In the formula, R ^L1 and R ^L2 are independent of each other and represent an alkyl group with 1 to 8 carbon atoms. One of the alkyl groups or two or more non-adjacent -CH ₂ -s may be independently -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^L1 means 0, 1, 2 or 3, A ^L1 , A ^L2 and A ^L3 are independent respectively, which means Select radicals (a) ~ radicals (c) in the group consisting of, (a) 1,4-cyclohexylene (one -CH ₂ -or more than two unadjacent ones in the radical) -CH ₂ -can be substituted by -O-), (b) 1,4-phenylene (1 -CH= or 2 or more non-adjacent ones in the group -CH= can be -N= Substitution), and (c) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decalin-2,6-diyl (naphthalene-2, One of 6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl -CH= or 2 or more unadjacent -CH= can be substituted by -N=) ; The above-mentioned groups (a), group (b) and group (c) may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, ^{respectively, Z L1} and Z ^L2 are each independent, and represent a single bond, -CH ₂ CH _2- ,-(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-,- CH=CH-, -CF=CF- or -C≡C-, when n ^L1 is 2 or 3 and there are multiple A ^L2s , they can be the same or different, and n ^L1 is 2 or 3 and exists When there are plural Z ^L2s , they may be the same or different, but do not include the compounds represented by the general formulas (i), (ii) and (N-1)). The liquid crystal composition of claim 5, which contains one or more compounds represented by general formula (L-5) as the compound represented by general formula (L),

(In the formula, R ^L51 and R ^L52 are independent, and have the same meaning as ^{R L1} and R ^L2 in the general formula (L)). The liquid crystal composition according to any one of claims 1 to 6, which contains 15 to 30% by mass of the compound represented by the general formula (i) in total. The liquid crystal composition according to any one of claims 1 to 7, which further contains a polymerizable compound represented by the general formula (P),

(In the above general formula (P), R ^p1 represents a hydrogen atom, a fluorine atom, a cyano group, an alkyl group with 1 to 15 carbon atoms, or -Sp ^p2 -P ^p2 , one of the alkyl groups or the non-adjacent 2 More than one -CH ₂ -can also be independently substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, one of the alkyl groups or Two or more hydrogen atoms may be independently substituted by cyano, fluorine or chlorine atoms. P ^p1 and P ^p2 are independent of each other and represent any of the general formulas (P ^p1 -1) to (P ^p1 -9) One,

(In the formula, R ^p11 and R ^p12 are independent of each other and represent a hydrogen atom, an alkyl group with 1 to 5 carbon atoms, or a halogenated alkyl group with 1 to 5 carbon atoms, and W ^p11 represents a single bond, -O-, -COO- Or methylene group, t ^p11 represents 0, 1, or 2, and when there are multiple R ^p11 , R ^p12 , W ^p11 and/or t ^p11 in the molecule, they may be the same or different), Sp ^p1 and Sp ^p2 Respectively independent, representing a single bond or spacer, Z ^p1 and Z ^p2 are respectively independent, representing a single bond, -O-, -S-, -CH ₂ -, -OCH ₂ -, -CH ₂ O-, -CO-, -C ₂ H ₄ -, -COO-, -OCO-, -OCOOCH ₂ -, -CH ₂ OCOO-, -OCH ₂ CH ₂ O-, -CO-NR ^ZP1 -, -NR ^ZP1 -CO-, -SCH ₂ －, －CH ₂ S－, －CH＝CR ^ZP1 －COO－, －CH＝CR ^ZP1 －OCO－, －COO－CR ^ZP1 ＝CH－, ^{－OCO－CR ZP1} ＝CH－, －COO－CR ^ZP1 =CH-COO-, -COO-CR ^ZP1 =CH-OCO-, -OCO-CR ^ZP1 =CH-COO-, -OCO-CR ^ZP1 =CH-OCO-, -(CH ₂ ) ₂ -COO-,- (CH ₂ ) ₂ -OCO-, -OCO- (CH ₂ ) ₂ -,-(C=O) -O- (CH ₂ ) ₂ -, -CH=CH-, -CF=CF-, -CF= CH-, -CH=CF-, -CF ₂ -, -CF ₂ O-, -OCF ₂ -, -CF ₂ CH ₂ -, -CH ₂ CF ₂ -, -CF ₂ CF ₂ -or -C≡C －(In the formula, R ^{ZP1 is} independent and represents a hydrogen atom or an alkyl group with 1 to 4 carbon atoms. When there are more than one R ^ZP1 in the molecule, they may be the same or different), A ^p1 , A ^p2 and A ^{p3 is} independent, and represents a group in the group consisting of ^{radicals (a p} ) ~ group (c ^{p ), (a p} ) 1,4-cyclohexylene (one -CH _{2 present in this group)} -Or two or more non-adjacent -CH ₂ -can be substituted by -O-), (b ^p ) 1,4-phenylene (1 in this group-CH = or 2 non-adjacent The above -CH= can be substituted by -N=), and (c ^p ) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl, decalin- 2,6-diyl, phenanthrene-2,7-diyl or anthracene-2,6-diyl (one of these groups-CH = or two or more non-adjacent-CH = can be －N=Substitute); the above-mentioned base (a ^p ), base (b ^p ) and base (c ^p ) One or two or more hydrogen atoms present in each of them may be independently substituted by halogen atoms, cyano groups, alkyl groups with 1 to 8 carbon atoms, or -Sp ^p2 -P ^p2 . One of the alkyl groups One or more than two non-adjacent -CH ₂ -can be independently replaced by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, m ^p1 Represents 0, 1, 2 or 3, and when there are plural Z ^p1 , A ^p2 , Sp ^p2 and/or P ^p2 in the molecule, they can be the same or different. A ^p3 is 0 in m ^{p1 and A p1} is In the case of phenanthrene-2,7-diyl or anthracene-2,6-diyl, it means a single bond). A liquid crystal display element using the liquid crystal composition of any one of claims 1 to 8. A PSA type or PSVA type liquid crystal display element which uses the liquid crystal composition of any one of claims 1 to 8.