TWI721763B - Liquid crystal composition and liquid crystal display element - Google Patents

Abstract

The invention provides a liquid crystal composition and a liquid crystal display element. The problem to be solved by the present invention is to provide a liquid crystal composition containing a polymerizable compound and a liquid crystal display element using the same. The polymerizable compound has a sufficiently fast polymerization rate and is most suitable for those with no or little pretilt angle. PSA-type or PSVA-type liquid crystal display elements with poor display such as afterimages caused by changes, high VHR, and excellent reliability. Provided is a liquid crystal composition which contains one or more compounds represented by the general formula (i) as the first component, contains one or more compounds represented by the general formula (L) as the second component, and contains One or two or more compounds in the compound group represented by the general formula (N-1d) and/or (N-1) are used as the third component, and the polymerizable compound represented by the general formula (II) is contained as the fourth component ingredient. In addition, liquid crystal display elements using these are provided.

Description

Liquid crystal composition and liquid crystal display element

The present invention relates to a liquid crystal composition containing a polymerizable compound and a liquid crystal display element using the liquid crystal composition.

Liquid crystal display elements are used in various household electrical equipment such as clocks 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 (in-plane switching) type, FFS (fringe field switching) type, OCB (Optical Compensation Birefringence) type, ECB (Voltage 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 using TFT (thin film transistor) or TFD (thin film diode) for driving can also be cited. It is known that among these display methods, IPS type, FFS type, ECB type, VA type, CSH type, etc. are used when a liquid crystal composition (n-type liquid crystal composition) exhibiting a negative dielectric anisotropy (Δε) is used. Shows favorable characteristics.

Among the display methods using n-type liquid crystal composition, there are VA type, PSA (polymer continuous alignment) type or PSVA (polymer stable vertical alignment) type in which a polymerizable compound is further polymerized in the liquid crystal phase and the alignment is controlled. The vertical alignment method represented by the IPS type and the horizontal alignment method represented by the IPS type and the FFS type. 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 and monitors. On the other hand, from the viewpoint of wide viewing angle, high penetration rate, low power consumption, and optimum compatibility with touch panels, for example, the horizontal alignment method is adopted in mobile devices such as smartphones and tablets, which are also advancing Use in LCD TVs.

Regarding PSA-type or PSVA-type liquid crystal display devices, in order to control the pretilt angle of liquid crystal molecules, a polymer structure is formed in the cell. Among the characteristics of the vertical alignment method, high-speed response and high contrast are particularly well known.

The production of PSA-type or PSVA-type liquid crystal display elements is carried out by injecting a liquid crystal composition containing a polymerizable compound between the substrates, and irradiating ultraviolet rays while applying a voltage to align the liquid crystal molecules, thereby making the polymerizable compound Polymerize and fix the alignment of liquid crystal molecules. Therefore, in the step of polymerizing the polymerizable compound in the liquid crystal composition, the polymerization rate of the above-mentioned polymerizable compound is very important. If the polymerization rate is high, the residual amount of the polymerizable compound is reduced in a short ultraviolet irradiation time, and therefore, deterioration of the liquid crystal composition caused by ultraviolet rays is less likely to occur. In addition, it also has the advantage of being able to produce such high productivity with less energy.

On the other hand, when the polymerization rate of the polymerizable compound is slow, in order to reduce the residual amount of the polymerizable compound, a longer UV irradiation time is required. In this way, when strong ultraviolet rays are irradiated for a long period of time in the polymerization step, the size of the manufacturing apparatus will be increased, the manufacturing efficiency will decrease, and degradation of the liquid crystal composition due to ultraviolet rays will occur. However, if the irradiation time of ultraviolet rays is shortened, the residual amount of the polymerizable compound will increase, and the remaining polymerizable compound will cause display failure called residual image to occur.

In summary, a liquid crystal composition having an improved polymerization rate of a polymerizable compound is desired.

As a solution for improving the polymerization rate of a polymerizable compound, as shown in the examples of Patent Document 1, it is proposed to use a compound such as formula (A) to extend the absorption wavelength of the liquid crystal material used to the long wavelength side. The method of improving the polymerization rate of the polymerizable compound, however, is not sufficient regarding the reliability represented by the change in the pretilt angle and the voltage retention rate.

先前技術文獻 專利文獻

Prior Art Document Patent Document

Patent Document 1: Japanese Special Form No. 2013-503952

The problem to be solved by the invention

The problem to be solved by the present invention is to provide a liquid crystal composition containing a polymerizable compound whose polymerization rate of the polymerizable compound is sufficiently fast, and which is most suitable for having no or very little residual image due to the change of the pretilt angle (IS: Image Sticking) and other PSA-type or PSVA-type liquid crystal display elements with poor display, high VHR, and excellent reliability; and provide a liquid crystal display element using the same. Technical means to solve the problem

The inventors of the present invention conducted diligent studies, and as a result, discovered that the above-mentioned problems can be solved by using a liquid crystal composition containing a compound having a specific chemical structure and a polymerizable compound, thereby completing the present invention. The effect of the invention

The liquid crystal composition of the present invention has negative dielectric anisotropy (Δε), large refractive index anisotropy (Δn), high nematic-isotropic liquid phase transition temperature (T _ni ), and low A liquid crystal composition with high rotational viscosity (γ ₁ ) and a sufficiently fast polymerization rate of the polymerizable compound. Since the liquid crystal display element using the liquid crystal composition of the present invention has a small residual amount of polymerizable compounds, the change in pretilt angle before and after driving is small, exhibits a high voltage holding ratio (VHR), and does not exist or suppresses image sticking, etc. Poor display, showing excellent display quality.

(式中，R ⁱ¹及R ⁱ²分別獨立地表示碳原子數1至8的烷基，該烷基中的1個或不相鄰的2個以上的-CH ₂-可分別獨立地被-CH＝CH-、-C≡C-、-O-、-CO-、-COO-或-OCO-取代，A ⁱ¹表示1,4-伸環己基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)，n ⁱ¹表示0、1或2)；含有一種或兩種以上通式(L)所示的化合物作為第二成分，

(式中，R ^L1及R ^L2分別獨立地表示碳原子數1至8的烷基，該烷基中的1個或不相鄰的2個以上的-CH ₂-可分別獨立地被-CH＝CH-、-C≡C-、-O-、-CO-、-COO-或-OCO-取代， A ^L1、A ^L2及A ^L3分別獨立地表示選自由以下基團(a)～(c)組成的群中的基團， (a)1,4-伸環己基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、 (b)1,4-伸苯基(存在於該基團中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)、及 (c)萘-2,6-二基、1,2,3,4-四氫萘-2,6-二基或十氫萘-2,6-二基(存在於萘-2,6-二基或1,2,3,4-四氫萘-2,6-二基中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)， 上述基團(a)、基團(b)及基團(c)可分別獨立地被烷基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、烯基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、氰基、氟原子或氯原子取代， Z ^L1及Z ^L2分別獨立地表示單鍵、-CH ₂CH ₂-、-(CH ₂) ₄-、-OCH ₂-、-CH ₂O-、-COO-、-OCO-、-OCF ₂-、-CF ₂O-、-CH＝N-N＝CH-、-CH＝CH-、-CF＝CF-或-C≡C-， n ^L1表示0、1、2或3， 當A ^L2存在複數個時，該等可相同亦可不同，當Z ^L2存在複數個時，該等可相同亦可不同，但上述通式(i)、及通式(N-1d)或(N-1)所示的化合物除外)；含有選自通式(N-1d)及/或通式(N-1)所示的化合物群中的一種或兩種以上的化合物作為第三成分，

(式中，R ^Nd11及R ^Nd12分別獨立地表示碳原子數1至8的烷基，該烷基中的1個或不相鄰的2個以上的-CH ₂-可分別獨立地被-CH＝CH-、-C≡C-、-O-、-CO-、-COO-或-OCO-取代，n ^Nd11表示1、2或3)，

(式中，R ^N11及R ^N12分別獨立地表示碳原子數1至8的烷基，該烷基中的1個或不相鄰的2個以上的-CH ₂-可分別獨立地被-CH＝CH-、-C≡C-、-O-、-CO-、-COO-或-OCO-取代，n ^N11及n ^N12分別獨立地表示0、1、2或3，n ^N11+n ^N12表示1、2或3，A ^N11及A ^N12分別獨立地表示選自由以下基團(a)～(c)組成的群中的基團， (a)1,4-伸環己基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、 (b)1,4-伸苯基(存在於該基團中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)、及 (c)萘-2,6-二基、1,2,3,4-四氫萘-2,6-二基或十氫萘-2,6-二基(存在於萘-2,6-二基或1,2,3,4-四氫萘-2,6-二基中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)， 上述基團(a)、基團(b)及基團(c)可分別獨立地被烷基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、烯基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、氰基、氟原子或氯原子取代，Z ^N11及Z ^N12分別獨立地表示單鍵、-CH ₂CH ₂-、-(CH ₂) ₄-、-OCH ₂-、-CH ₂O-、-COO-、-OCO-、-OCF ₂-、-CF ₂O-、-CH＝N-N＝CH-、-CH＝CH-、-CF＝CF-或-C≡C-，當A ^N11及/或A ^N12存在複數個時，該等可相同亦可不同，當Z ^N11及/或Z ^N12存在複數個時，該等可相同亦可不同，但通式(N-1d)所示的化合物除外)；且含有通式(II)所示的聚合性化合物作為第四成分，

(式中，R ²⁰¹、R ²⁰²、R ²⁰³、R ²⁰⁴、R ²⁰⁵、R ²⁰⁶、R ²⁰⁷、R ²⁰⁸、R ²⁰⁹及R ²¹⁰分別獨立地表示P ²¹-S ²¹-、可被氟原子取代的碳原子數1至18的烷基、可被氟原子取代的碳原子數1至18的烷氧基、氟原子或氫原子中的任一者，P ²¹分別獨立地表示選自式(R-1)至式(R-7)中的聚合性基團，

(式中，R ¹¹、R ¹²、R ¹³、R ¹⁴及R ¹⁵分別獨立地表示碳原子數1至5的烷基、氟原子或氫原子中的任一者，m ^r5、m ^r7、n ^r5及n ^r7分別獨立地表示0、1、或2)，S ²¹表示單鍵或碳數1至15的伸烷基，該伸烷基中的1個或2個以上的-CH ₂-能夠以氧原子不直接相鄰的方式被-O-、-OCO-或-COO-取代，n ²¹表示0、1或2，A ²¹表示選自由以下基團(a)～(c)組成的群中的基團， (a)1,4-伸環己基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、 (b)1,4-伸苯基(存在於該基團中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)、及 (c)萘-2,6-二基、1,2,3,4-四氫萘-2,6-二基或十氫萘-2,6-二基(存在於萘-2,6-二基或1,2,3,4-四氫萘-2,6-二基中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)， 上述基團(a)、基團(b)及基團(c)可分別獨立地被碳原子數1至12的烷基、碳原子數1至12的烷氧基、鹵素、氰基、硝基或P ²¹-S ²¹-取代，在上述通式(II)的1分子中具有至少1個以上的P ²¹-S ²¹-，L ²¹表示單鍵、-OCH ₂-、-CH ₂O-、-C ₂H ₄-、-OC ₂H ₄O-、-COO-、-OCO-、-CH＝CR ^a-COO-、-CH＝CR ^a-OCO-、-COO-CR ^a＝CH-、-OCO-CR ^a＝CH-、-(CH ₂) _z-COO-、-(CH ₂) _z-OCO-、-OCO-(CH ₂) _z-、-COO-(CH ₂) _z-、-CH＝CH-、-CF ₂O-、-OCF ₂-或-C≡C-(式中，R ^a分別獨立地表示氫原子或碳原子數1至3的烷基，上述式中，z分別獨立地表示1至4的整數)，當P ²¹、S ²¹及A ²¹存在複數個時，分別可相同亦可不同)。 The liquid crystal composition of the present invention contains one or two or more compounds represented by the general formula (i) as the first component,

(In the formula, R ⁱ¹ and R ⁱ² each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substituted, A ⁱ¹ represents 1,4-cyclohexylene (one -CH _{2 in the group} -Or two or more non-adjacent -CH ₂ -can be substituted with -O-), n ⁱ¹ represents 0, 1 or 2); containing one or more compounds represented by the general formula (L) as the first Two components,

(In the formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substituted, A ^L1 , A ^L2 and A ^L3 each independently represent selected from the following groups (a) to (c ) Groups in the group consisting of (a) 1,4-cyclohexylene (1 -CH ₂ -or 2 or more non-adjacent -CH ₂ -in the group can be substituted with -O-), (b) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted with -N=), and (c) Naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6-diyl) One -CH= in diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl or two or more non-adjacent -CH= can be substituted with -N=), the above Group (a), group (b) and group (c) can each be independently substituted by an alkyl group (one -CH ₂ -existing in the group-or two or more non-adjacent -CH ₂ - may be substituted with -O-), an alkenyl group (present in the group in which one -CH ₂ - or non-adjacent two or more -CH ₂ - may be substituted with -O-), a cyano group , Fluorine atom or chlorine atom substitution, Z ^L1 and Z ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-, n ^L1 means 0, 1, 2 or 3. When ^{there are plural A L2} , they may be the same or different. When Z ^L2 exists, they may be the same or different, but the above general formula (i) and general formula (N-1d) Or the compound represented by (N-1)); containing one or two or more compounds selected from the group of compounds represented by general formula (N-1d) and/or general formula (N-1) as the third ingredient,

(In the formula, R ^Nd11 and R ^Nd12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^Nd11 represents 1, 2 or 3),

(In the formula, R ^N11 and R ^N12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^N11 and n ^N12 respectively independently represent 0, 1, 2 or 3, n ^N11 + n ^N12 represents 1, 2 or 3, A ^N11 and A ^N12 each independently represent a group selected from the group consisting of the following groups (a) to (c): (a) 1,4-cyclohexylene (present in this group) One -CH ₂ -or two or more non-adjacent -CH ₂ -in the group can be substituted with -O-), (b) 1,4-phenylene (the 1 in the group One -CH= or two or more non-adjacent -CH= can be substituted with -N=), and (c) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene- 2,6-diyl or decahydronaphthalene-2,6-diyl (1 in naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl One -CH= or two or more non-adjacent -CH= can be substituted with -N=), the above group (a), group (b) and group (c) can be each independently by an alkyl group (1 -CH ₂ -or 2 or more non-adjacent -CH ₂ -in the group can be substituted with -O-), alkenyl (1 -CH in the group ₂ -or two or more non-adjacent -CH ₂ -may be substituted with -O-), cyano, fluorine atom or chlorine atom, Z ^N11 and Z ^N12 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-,- CH=CH-, -CF=CF- or -C≡C-, when ^{there are plural A N11} and/or A ^N12 , these may be the same or different, when Z ^N11 and/or Z ^N12 exist plural , These may be the same or different, except for the compound represented by the general formula (N-1d)); and containing the polymerizable compound represented by the general formula (II) as the fourth component,

(In the formula, R ²⁰¹ , R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , R ²⁰⁹ and R ²¹⁰ each independently represent P ²¹ -S ²¹ -, which may be substituted by a fluorine atom Any one of an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 18 carbon atoms that may be substituted with a fluorine atom, a fluorine atom, or a hydrogen atom, and P ²¹ each independently represents selected from the formula (R- 1) to the polymerizable group in formula (R-7),

(In the formula, R ¹¹ , R ¹² , R ¹³ , R ¹⁴ and R ¹⁵ each independently represent any of an alkyl group having 1 to 5 carbon atoms, a fluorine atom, or a hydrogen atom, m ^r5 , m ^r7 , n ^r5 and n ^r7 each independently represent 0, 1, or 2), S ²¹ represents a single bond or an alkylene having 1 to 15 carbon atoms, and one or more of -CH ₂ -in the alkylene can be It is substituted by -O-, -OCO- or -COO- in such a way that the oxygen atom is not directly adjacent, n ²¹ represents 0, 1 or 2, and A ²¹ represents the group selected from the following groups (a) to (c) the group, (a) 1,4- cyclohexylene (present in the group in which one -CH ₂ - or non-adjacent two or more -CH ₂ - may be substituted with -O-) , (B) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted with -N=), and (c) naphthalene -2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6-diyl or 1 ,2,3,4-Tetrahydronaphthalene-2,6-diyl, one -CH= or two or more non-adjacent -CH= can be substituted with -N=), the above group (a ), group (b) and group (c) can be each independently covered by an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, halogen, cyano, nitro or P ^21- S ^{21 -substituted, having at least one P 21} -S ²¹ -in one molecule of the general formula (II), and L ²¹ represents a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -OC ₂ H ₄ O-, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ ) _z -OCO-, -OCO-(CH ₂ ) _z -, -COO-(CH ₂ ) _z -, -CH=CH- , -CF ₂ O-, -OCF ₂ -or -C≡C- (wherein R ^a independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and in the above formula, z each independently represents 1 To 4), when ^{there are plural P 21} , S ²¹ and A ²¹ , they may be the same or different respectively).

In the general formula (i), R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkylene oxide having 2 to 8 carbon atoms. The group is preferably an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyloxy group having 2 to 5 carbon atoms, and more preferably It is an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms. R ^{i2 is} preferably an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more It is preferably an alkyl group having 1 to 3 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and particularly preferably an alkyl group having 1 carbon atom. A ⁱ¹ represents 1,4-cyclohexylene group (in the presence of a group -CH ₂ - or non-adjacent two or more -CH ₂ - may be substituted with -O-), a non-preferred Substituted 1,4-cyclohexylene. n ⁱ¹ represents 0, 1, or 2, preferably 1 or 2, and particularly preferably 1.

The compound represented by general formula (i) is preferably selected from formula (i-0.1) to formula (i-0.7), formula (i-1.1) to formula (i-1.7) and formula (i-2.1) to formula Compounds in the compound group shown in (i-2.7).

Among the group of compounds represented by formula (i-0.1) to formula (i-0.7), formula (i-0.3), formula (i-0.5), and formula (i-0.7) are more preferred, and formula (i-0.7) is particularly preferred (i-0.7).

Among the group of compounds represented by formula (i-1.1) to formula (i-1.7), compounds represented by formula (i-1.3), formula (i-1.6), and formula (i-1.7) are more preferred, Particularly preferred is a compound represented by formula (i-1.3).

Among the group of compounds represented by formula (i-2.1) to formula (i-2.7), compounds represented by formula (i-2.3), formula (i-2.6), and formula (i-2.7) are more preferred, Particularly preferred is a compound represented by formula (i-2.3).

The lower limit of the preferable content of the compound represented by formula (i) is 1%, 2%, 3%, 5%, 7% relative to the total amount of the composition of the present invention. The upper limit of the preferred content is 20%, 15%, 13%, 10%, 9%. Hereinafter, as long as there is no special description,% means mass %.

The compound represented by formula (i) may be used singly or in combination of two or more kinds. By combining two or more compounds represented by formula (i), the effects of the present invention can be remarkably obtained. When two or more compounds represented by formula (i) are used, the compounds represented by formulas (i-0.1) to (i-0.7) and those represented by formulas (i-1.1) to (i-1.7) are preferred The combination of the compounds of is also preferably a combination of two of the compounds represented by formulas (i-1.1) to (i-1.7).

The liquid crystal composition of the present invention preferably contains one or two or more compounds represented by the general formula (L). The compound represented by the general formula (L) is a compound that is substantially neutral in terms of dielectric properties (the value of Δε is -2 to 2). Among them, the compound represented by the general formula (i) is excluded.

The compound represented by the general formula (L) may be used alone or in combination. There are no particular restrictions on the types of compounds that can be combined, and they are used in appropriate combinations according to desired properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. For example, as one embodiment of the present invention, there is one kind of compound used. Or, in other embodiments of the present invention, they are 2, 3, 4, 5, 6, 7, 8, 9, or 10 or more types.

The compound represented by the general formula (L) is a so-called non-polar compound in which Δε is about zero. Therefore, the number of polar groups such as halogen atoms in the molecule is preferably 2 or less, preferably 1 or less. In order to improve the solubility with other liquid crystal compounds, it is preferably one. Preferably, no substitution has occurred.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general 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%.

Relative to the total amount of the composition of the present invention, the comparison of compounds represented by general formula (i), general formula (L), general formula (N-1d), general formula (N-1) and general formula (II) The lower limit of the optimum content is 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 99%, 100%. The upper limit of the preferred content is 100%, 95%, 85%, 75%, 65%.

In order to solve the problem of the present invention, it is preferable that the above-mentioned lower limit value is high and the upper limit value is high.

When reliability is important, both R ^L1 and R ^L2 are preferably alkyl groups, and when viscosity reduction is important, at least one of them is preferably an alkenyl group.

The halogen atoms present in the molecule are preferably fluorine atoms, and the number thereof is preferably 0, 1, 2, or 3, preferably 0 or 1.

When the ring structure to which R ^L1 and R ^L2 are bonded is a phenyl group (aromatic), it is preferably a linear alkyl group having 1 to 5 carbon atoms, or a linear alkyl group having 1 to 4 carbon atoms. When the alkoxy group and the alkenyl group having 4 to 5 carbon atoms are bonded to a saturated ring structure such as cyclohexane, piperan, or dioxane, the number of carbon atoms is preferably linear An alkyl group of 1 to 5, 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 in the presence of oxygen atoms is preferably 5 or less, and is preferably linear.

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

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

Regarding A ^L1 , A ^L2 and A ^L3 , when it is necessary 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, decahydronaphthalene-2,6-diyl Or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably the following structure,

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

Regarding Z ^L1 and Z ^L2 , when the response speed is important, a single key is preferable.

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

(式中，R ^L11及R ^L12分別獨立地表示與通式(L)中的R ^L1及R ^L2相同意義)。

(In the formula, R ^L11 and R ^L12 each independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L)).

R ^L11 and R ^{L12 are} preferably linear alkyl having 1 to 5 carbon atoms, linear alkoxy having 1 to 4 carbon atoms, and linear alkenyl having 2 to 5 carbon atoms .

The compound represented by the general formula (L-1) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

The lower limit of the preferable content is 1%, 2%, 3%, 5%, 7%, 10% relative to the total amount of the composition of the present invention. The upper limit of the preferable content is 40%, 35%, 33%, 30%, 25% relative to the total amount of the composition of the present invention.

When it is necessary to keep the viscosity of the composition of the present invention low and a composition with a fast response speed is required, it is preferable that the above-mentioned lower limit is high and the upper limit is high. Furthermore, when it is necessary to keep the Tni of the composition of the present invention high and a composition with good temperature stability is required, it is preferable that the above-mentioned lower limit is medium and the upper limit is medium. Moreover, when it is desired to increase the dielectric constant 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. In terms of improving the viewing angle characteristics, it is not preferable to increase the upper limit value.

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).

(式中，R ^L12表示與通式(L-1)中的R ^L2相同意義)。

(In the formula, R ^L12 has the same meaning ^{as R L2} in the general formula (L-1)).

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

The lower limit of the preferable content of the compound represented by formula (L-1-1.3) is 1%, 2%, 3%, 5%, 7%, 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% relative to the total amount of the composition of the present invention.

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).

(式中，R ^L12表示與通式(L-1)中的R ^L2相同意義)。

(In the formula, R ^L12 has the same meaning ^{as R L2} in the general formula (L-1)).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound represented by formula (L-1-2) is 1%, 5%, 10%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 35%. The upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, 33%, 30% relative to the total amount of the composition of the present invention.

Furthermore, the compound represented by general formula (L-1-2) is preferably a compound selected from the group of compounds represented by formula (L-1-2.1) to formula (L-1-2.4), preferably (L-1-2.2) to the compound represented by formula (L-1-2.4). In particular, the compound represented by the formula (L-1-2.2) is preferable because it particularly improves the response speed of the composition of the present invention. In addition, when Tni is required to be higher than the response speed, it is preferable to use a compound represented by formula (L-1-2.3) or 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 less preferable to be 30% or more.

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-1-2.2) is 10%, 15%, 18%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 38%, 40%. The upper limit of the preferred content relative to the total amount of the composition of the present invention is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, 32%, 30%, 27% , 25%, 22%.

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

(式中，R ^L13及R ^L14分別獨立地表示碳原子數1至8的烷基或碳原子數1至8的烷氧基)。

(In the formula, R ^L13 and R ^L14 each independently 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 having 1 to 5 carbon atoms, linear alkoxy having 1 to 4 carbon atoms, and linear alkenyl having 2 to 5 carbon atoms .

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound represented by formula (L-1-3) is 1%, 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 30%. The upper limit of the preferred content relative to the total amount of the composition of the present invention is 60%, 55%, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 27%, 25% , 23%, 20%, 17%, 15%, 13%, 10%.

Furthermore, the compound represented by general formula (L-1-3) is preferably a compound selected from the group of compounds represented by formula (L-1-3.1) to formula (L-1-3.12), preferably (L-1-3.1), a compound represented by formula (L-1-3.3) or formula (L-1-3.4). In particular, the compound represented by the formula (L-1-3.1) is preferable because it particularly improves 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 shown in. 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-1-3.12), in order to make the solubility at low temperature It is good, and less preferable is set to 20% or more.

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

In order to solve the problem of the present invention, it is preferable to select from formula (L-1-3.1), formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula A combination of two or more compounds in the compound group shown in (L-1-3.12). When attaching importance to response speed, it is also preferable to use the compound represented by formula (L-1-1.3).

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

(式中，R ^L21及R ^L22分別獨立地表示與通式(L)中的R ^L1及R ^L2相同意義)。

(In the formula, R ^L21 and R ^L22 each independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L)).

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, 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-2) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When focusing on the solubility at low temperatures, setting the content to a larger amount will result in a higher effect, whereas when focusing on the response speed, setting the content to a lower amount will result in a higher effect. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

With respect to the total amount of the liquid crystal composition (or liquid crystal mixture) obtained by the production method of the present invention, the lower limit of the preferable content of the compound represented by formula (L-2) is 1%, 2%, 3%, 5%, 7%, 10%. The upper limit of the preferred content is 20%, 18%, 15%, 13%, 10%, 8%, 7%, relative to the total amount of the liquid crystal composition (or liquid crystal mixture) obtained by the manufacturing method of the present invention. 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-2.6), preferably formula (L-2.1), Compounds represented by formula (L-2.3), formula (L-2.4) and formula (L-2.6).

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

(式中，R ^L31及R ^L32分別獨立地表示與通式(L)中的R ^L1及R ^L2相同意義，但R ^L32不表示烷氧基或烯氧基。其中，R ^L31及R ^L32分別獨立地較佳為碳原子數1至5的烷基或碳原子數4至5的烯基)。

(In the formula, R ^L31 and R ^L32 each independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L) ^{, but R L32} does not represent an alkoxy group or an alkenyloxy group. Wherein, R ^L31 and R ^L32 respectively It is independently 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-3) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

With respect to the total amount of the liquid crystal composition (or liquid crystal mixture) obtained by the production method of the present invention, the lower limit of the preferable content of the compound represented by formula (L-3) is 1%, 2%, 3%, 5%, 7%, 10%. The upper limit of the preferred content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, relative to the total amount of the liquid crystal composition (or liquid crystal mixture) obtained by the manufacturing method of the present invention. 5%, 3%.

In the case of obtaining a high birefringence, the effect is high if the content is set larger, while the effect is relatively high if the content is set smaller if the high Tni is emphasized. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

Furthermore, the compound represented by general formula (L-3) is preferably a compound selected from the group of compounds represented by formula (L-3.1) to formula (L-3.4), and more preferably formula (L-3.1) Or the compound represented by formula (L-3.4).

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

(式中，R ^L41及R ^L42分別獨立地表示與通式(L)中的R ^L1及R ^L2相同意義)。

(In the formula, R ^L41 and R ^L42 each independently represent 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 Alkoxy having 1 to 4 carbon atoms).

The compound represented by the general formula (L-4) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

In the composition of the present invention, the content of the compound represented by the general formula (L-4) needs to be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process adaptability, drip marks, residual image, The required performance such as dielectric anisotropy can be adjusted appropriately.

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

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

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

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

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

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

In the case of containing both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5), the lower limit of the preferable content of the two compounds relative to the total amount of the composition of the present invention It is 15%, 19%, 24%, 30%, and the preferable upper limit value is 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-4.7) to formula (L-4.10), and is particularly preferably a compound represented by formula (L-4.9).

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

(式中，R ^L51及R ^L52分別獨立地表示與通式(L)中的R ^L1及R ^L2相同意義，但R ^L52不表示烷氧基或烯氧基。其中，R ^L51及R ^L52分別獨立地較佳為碳原子數1至5的烷基或碳原子數2至5的烯基。

(In the formula, R ^L51 and R ^L52 each independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L) ^{, but R L52} does not represent an alkoxy group or an alkenyloxy group. Wherein, R ^L51 and R ^L52 respectively It is independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms.

The compound represented by the general formula (L-5) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

In the composition of the present invention, the content of the compound represented by the general formula (L-5) needs to be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process adaptability, drip marks, residual image, The required performance such as dielectric anisotropy is adjusted appropriately.

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-5) is 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 the general formula (L-5) is preferably the compound represented by the formula (L-5.1), the formula (L-5.2) or the formula (L-5.3), and particularly preferably the formula (L-5.1) or the formula The compound shown in (L-5.2).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable 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 lower limit of the preferable 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-6) is the following compound.

(式中，R ^L61及R ^L62分別獨立地表示與通式(L)中的R ^L1及R ^L2相同意義，X ^L61、X ^L62、X ^L63及X ^L64分別獨立地表示氫原子或氟原子，但X ^L61～X ^L64中的2個以上不同時表示氟原子)。

(In the formula, R ^L61 and R ^L62 each independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L), ^{and X L61} , X ^L62 , X ^L63 and X ^L64 each independently represent a hydrogen atom or a fluorine atom, However ^{, two or more of X L61} to X ^L64 do not simultaneously represent a fluorine atom).

The compound represented by the general formula (L-6) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

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-6) is 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 emphasis is on increasing Δn, it is preferable to set the content to be larger, and when the emphasis is on precipitation at low temperature, it is preferable to set the content to be small.

The compound represented by general formula (L-6) is preferably a compound represented by formula (L-6.1) to formula (L-6.6).

There are no particular restrictions on the types of compounds that can be combined, but it is preferable to contain one to three of these compounds, and it is more preferable to contain one to four.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable 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.

(式中，R ^L71及R ^L72分別獨立地表示與通式(L)中的R ^L1及R ^L2相同意義，A ^L71及A ^L72分別獨立地表示與通式(L)中的A ^L2及A ^L3相同意義，A ^L71及A ^L72上的氫原子可分別獨立地被氟原子取代，Z ^L71表示與通式(L)中的Z ^L2相同意義，X ^L71及X ^L72分別獨立地表示氟原子或氫原子，但不同時表示氟原子)。

(In the formula, R ^L71 and R ^L72 independently represent the same meaning as ^{R L1} and R ^L2 in general formula (L), ^{and A L71} and A ^{L72 independently represent the same meaning as A L2} and A in general formula (L). ^{L3 has the} same meaning, ^{the hydrogen atoms on A L71} and A ^L72 can be independently replaced by fluorine atoms, Z ^L71 has the same meaning ^{as Z L2} in the general formula (L), ^{and X L71} and X ^L72 each independently represent a fluorine atom or Hydrogen atom, but does not mean fluorine atom at the same time).

In the formula, R ^L71 and R ^L72 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, A ^L71 and A ^L72 Each independently is preferably 1,4-cyclohexylene or 1,4-phenylene ^{. The hydrogen atoms on A L71} and A ^L72 may 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, and four kinds.

In the composition of the present invention, the content of the compound represented by the general formula (L-7) needs to be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process adaptability, drip marks, residual image, The required performance such as dielectric anisotropy is adjusted appropriately.

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-7) is 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%.

With regard to the composition of the present invention, when a high T _ni embodiment is desired, it is preferable to set the content of the compound represented by formula (L-7) to be larger, and when a low viscosity embodiment is desired , It is better to set the content less.

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 a compound represented by formula (L-7.21) to formula (L-7.23). Preferably, it is a compound represented by formula (L-7.21).

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

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

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

The liquid crystal composition of the present invention contains one or two or more compounds selected from the group of compounds represented by the general formula (N-1d) and/or the general formula (N-1) described later as the third component.

The compound represented by the general formula (N-1d) is a compound that is negative in terms of dielectric properties (the sign of Δε is negative and its absolute value is greater than 2). Only one kind of the compound represented by general formula (N-1d) may be used, or two or more kinds may be used.

(式中，R ^Nd11及R ^Nd12分別獨立地表示碳原子數1至8的烷基，該烷基中的1個或不相鄰的2個以上的-CH ₂-可分別獨立地被-CH＝CH-、-C≡C-、-O-、-CO-、-COO-或-OCO-取代，n ^Nd11表示1、2或3)。

(In the formula, R ^Nd11 and R ^Nd12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^Nd11 represents 1, 2 or 3).

In the general formula (N-1d), R ^{Nd11 is} preferably an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms. The alkenyloxy group of 8 is preferably an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyloxy group having 2 to 5 carbon atoms , More preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and still more preferably an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms, especially Preferably, it is an alkenyl group having 3 carbon atoms (propenyl group). Preferably, it is a linear alkyl group having 1 to 5 carbon 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 in the presence of oxygen atoms is preferably 5 or less, and is preferably linear. Especially preferred is propyl. R ^{Nd12 is} preferably an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms, preferably An alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyloxy group having 2 to 5 carbon atoms, and more preferably a carbon atom number of 1 Alkyl group having to 5 or alkenyl group having 2 to 5 carbon atoms, more preferably alkyl group having 2 to 5 carbon atoms or alkenyl group having 2 to 3 carbon atoms, particularly preferably alkenyl group having 3 carbon atoms (Allyl). Preferably, it is a linear alkyl group having 1 to 5 carbon 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 in the presence of oxygen atoms is preferably 5 or less, and is preferably linear. Particularly preferred are methoxy and ethoxy.

In the general formula (N-1d), n ^{Nd11 is} preferably 1 or 2, and preferably contains both a ^{compound in which n Nd11} is 1 and a compound in which n ^Nd11 is 2, and also preferably contains only n ^Nd11 in 2. Compound.

The compound represented by general formula (N-1d) is preferably a compound represented by general formula (N-1-10) and a compound represented by general formula (N-1-11).

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

(式中，R ^N1101及R ^N1102分別獨立地表示與通式(N-1d)中的R ^Nd11及R ^Nd12相同意義)。

(In the formula, R ^N1101 and R ^N1102 each independently represent the same meaning as ^{R Nd11} and R ^Nd12 in the general formula (N-1d)).

R ^{N1101 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl, propyl, butyl, vinyl, or 1-propenyl group. R ^{N1102 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, preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-10) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When the improvement of Δε is important, it is better to set the content higher. When the solubility at low temperature is important, the effect is higher if the content is higher, and when T _NI is important, the content is higher if the content is set higher. high. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

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

Furthermore, the compound represented by general formula (N-1-10) is preferably a compound selected from the group of compounds represented by formula (N-1-10.1) to formula (N-1-10.14), more preferably Compounds represented by formula (N-1-10.1) to (N-1-10.5) are more preferably compounds represented by formula (N-1-10.1) or formula (N-1-10.2), especially It is a compound represented by formula (N-1-10.2).

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

(式中，R ^N1111及R ^N1112分別獨立地表示與通式(N-1d)中的R ^Nd11及R ^Nd12相同意義)。

(In the formula, R ^N1111 and R ^N1112 each independently represent the same meaning as ^{R Nd11} and R ^Nd12 in the general formula (N-1d)).

R ^{N1111 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl, propyl, butyl, vinyl, or 1-propenyl group. R ^{N1112 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, preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-11) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When the improvement of Δε is important, it is better to set the content higher. When the solubility at low temperature is important, the effect is higher if the content is set lower, and when the T _NI is important, the content is set higher for the effect. high. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

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

Furthermore, the compound represented by general formula (N-1-11) is preferably a compound selected from the group of compounds represented by formula (N-1-11.1) to formula (N-1-11.14), more preferably The compounds represented by (N-1-11.1) to (N-1-11.4) are more preferably compounds represented by formula (N-1-11.2) and formula (N-1-11.4).

As the compound represented by formula (N-1d), it is preferable to use one or two or more selected from formula (N-1-10.1), formula (N-1-10.2), and formula (N-1-11.2) , A compound in the group of compounds represented by formula (N-1-11.4) and formula (N-1-11.14).

The compound represented by the general formula (N-1) is a compound that is negative in terms of dielectric properties (the sign of Δε is negative and its absolute value is greater than 2). The compound represented by the general formula (N-1) is preferably a compound in which Δε is negative and its absolute value is greater than 3. Moreover, the compound represented by general formula (N-1) may use only 1 type, and may use 2 or more types.

(式中，R ^N11及R ^N12分別獨立地表示碳原子數1至8的烷基，該烷基中的1個或不相鄰的2個以上的-CH ₂-可分別獨立地被-CH＝CH-、-C≡C-、-O-、-CO-、-COO-或-OCO-取代，n ^N11及n ^N12分別獨立地表示0、1、2或3，n ^N11+n ^N12表示1、2或3，A ^N11及A ^N12分別獨立地表示選自由以下基團(a)～(c)組成的群中的基團， (a)1,4-伸環己基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、 (b)1,4-伸苯基(存在於該基團中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)、及 (c)萘-2,6-二基、1,2,3,4-四氫萘-2,6-二基或十氫萘-2,6-二基(存在於萘-2,6-二基或1,2,3,4-四氫萘-2,6-二基中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)， 上述基團(a)、基團(b)及基團(c)可分別獨立地被烷基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、烯基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、氰基、氟原子或氯原子取代，Z ^N11及Z ^N12分別獨立地表示單鍵、-CH ₂CH ₂-、-(CH ₂) ₄-、-OCH ₂-、-CH ₂O-、-COO-、-OCO-、-OCF ₂-、-CF ₂O-、-CH＝N-N＝CH-、-CH＝CH-、-CF＝CF-或-C≡C-，當A ^N11及/或A ^N12存在複數個時，該等可相同亦可不同，當Z ^N11及/或Z ^N12存在複數個時，該等可相同亦可不同，但通式(N-1d)所示的化合物除外)。

(In the formula, R ^N11 and R ^N12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^N11 and n ^N12 respectively independently represent 0, 1, 2 or 3, n ^N11 + n ^N12 represents 1, 2 or 3, A ^N11 and A ^N12 each independently represent a group selected from the group consisting of the following groups (a) to (c): (a) 1,4-cyclohexylene (present in this group) One -CH ₂ -or two or more non-adjacent -CH ₂ -in the group can be substituted with -O-), (b) 1,4-phenylene (the 1 in the group One -CH= or two or more non-adjacent -CH= can be substituted with -N=), and (c) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene- 2,6-diyl or decahydronaphthalene-2,6-diyl (1 in naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl One -CH= or two or more non-adjacent -CH= can be substituted with -N=), the above group (a), group (b) and group (c) can be each independently by an alkyl group (1 -CH ₂ -or 2 or more non-adjacent -CH ₂ -in the group can be substituted with -O-), alkenyl (1 -CH in the group ₂ -or two or more non-adjacent -CH ₂ -may be substituted with -O-), cyano, fluorine atom or chlorine atom, Z ^N11 and Z ^N12 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-,- CH=CH-, -CF=CF- or -C≡C-, when ^{there are plural A N11} and/or A ^N12 , these may be the same or different, when Z ^N11 and/or Z ^N12 exist plural , These may be the same or different, except for the compound represented by the general formula (N-1d)).

In the general formula (N-1), R ^N11 and R ^N12 are each independently preferably an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, and an alkenyl group having 2 to 8 carbon atoms. Or an alkenyloxy group having 2 to 8 carbon atoms, preferably an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or 2 Alkenyloxy group up to 5 is more preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and still more preferably an alkyl group having 2 to 5 carbon atoms or an alkyl group having 2 to 5 carbon atoms. The alkenyl group of 3 is particularly preferably an alkyl group having 3 carbon atoms or a propenyl group.

Moreover, when the ring structure to which it is bonded is a phenyl group (aromatic), it is preferably a linear alkyl group having 1 to 5 carbon atoms, or a linear alkoxy group having 1 to 4 carbon atoms. And an alkenyl group having 4 to 5 carbon atoms, when the ring structure to which it is bonded is a saturated ring structure such as cyclohexane, piperan, or dioxane, it is preferably a linear chain having 1 to 5 carbon atoms Alkyl group, linear alkoxy group having 1 to 4 carbon atoms, and linear alkenyl group having 2 to 5 carbon atoms. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms in the presence of oxygen atoms is preferably 5 or less, and is preferably linear.

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

Preferred are alkyl groups having 1 to 5 carbon atoms and alkoxy groups having 1 to 5 carbon atoms, and preferred are methyl, ethyl, propyl, methoxy, ethoxy and propoxy.

較佳為反-1,4-伸環己基、1,4-伸環己烯基或1,4-伸苯基，更佳為反-1,4-伸環己基或1,4-伸苯基。 Regarding A ^N11 and A ^N12 , when it is necessary to increase Δn, they are each independently preferably aromatic, and in order to improve the response speed, they are each independently 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,

Preferably it is trans-1,4-cyclohexylene, 1,4-cyclohexenylene or 1,4-phenylene, and more preferably is trans-1,4-cyclohexenylene or 1,4-phenylene base.

Z ^N11 and Z ^N12 each independently preferably represent -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -or a single bond, and more preferably -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. Among them, the compound represented by the general formula (N-1d) is excluded. In addition, liquid crystal compounds having a terphenyl skeleton with negative dielectric anisotropy are excluded.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound represented by the general 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%.

The lower limit of the preferable total content of the compound represented by the general formula (N-1d) and the compound represented by the general formula (N-1) is 1% and 10% relative to the total amount of the composition of the present invention , 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%.

Specifically, the compound represented by general formula (N-1) is a compound selected from the group of compounds represented by general formulas (N-1-1) to (N-1-18).

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

(式中，R ^N111表示碳原子數1至5的烷基或碳原子數2至5的烯基，R ^N112表示碳原子數1至5的烷基或碳原子數1至4的烷氧基)。

(In the formula, R ^N111 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N112} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ).

R ^{N111 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a propyl group, a pentyl group or a vinyl group. R ^{N112 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, and is preferably an ethoxy group or a butoxy group.

The compound represented by the general formula (N-1-1) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When the improvement of Δε is important, it is better to set the content higher. When the solubility at low temperature is important, the effect will be higher if the content is set higher. When the T _NI is important, the content will be set lower to achieve the effect. high. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound represented by formula (N-1-1) is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. The upper limit of the preferred content relative to the total amount of the composition of the present invention 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 general formula (N-1-1) is preferably a compound selected from the group of compounds represented by formula (N-1-1.1) to formula (N-1-1.23), preferably The compounds represented by (N-1-1.1) to (N-1-1.4) are preferably compounds represented by formula (N-1-1.1) and formula (N-1-1.3).

The compounds represented by formulas (N-1-1.1) to (N-1-1.22) can be used alone or in combination, relative to the total amount of the composition of the present invention, alone or in a preferred content of these compounds The lower limit is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. The upper limit of the preferred content relative to the total amount of the composition of the present invention 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.

(式中，R ^N121表示碳原子數1至5的烷基或碳原子數2至5的烯基，R ^N122表示碳原子數1至5的烷基或碳原子數1至4的烷氧基)。

(In the formula, R ^N121 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N122} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ).

R ^{N121 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl, propyl, butyl or pentyl group. R ^{N122 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, preferably methyl, propyl, methoxy, ethyl Oxy or propoxy.

The compound represented by the general formula (N-1-2) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When the improvement of Δε is important, it is better to set the content higher. When the solubility at low temperature is important, the effect is higher if the content is set less, and when T _NI is important, the content is set higher if the effect is higher. high. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

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 (N-1-2) is 5%, 7%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37%, 40%, 42%. The upper limit of the preferred content relative to the total amount of the composition of the present invention 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 general formula (N-1-2) is preferably a compound selected from the group of compounds represented by formula (N-1-2.1) to formula (N-1-2.22), preferably (N-1-2.3) to formula (N-1-2.7), formula (N-1-2.10), formula (N-1-2.11), formula (N-1-2.13) and formula (N-1- The compound shown in 2.20) is preferably the compound represented by formula (N-1-2.3) to formula (N-1-2.7) when the improvement of Δε is important, and when the improvement of T _NI is important, it is preferably The compound represented by formula (N-1-2.10), formula (N-1-2.11) and formula (N-1-2.13), when the improvement of response speed is important, the formula (N-1-2.20) is preferred The compound shown.

The compounds represented by formula (N-1-2.1) to formula (N-1-2.22) 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 is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. The upper limit of the preferred content relative to the total amount of the composition of the present invention 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.

(式中，R ^N131表示碳原子數1至5的烷基或碳原子數2至5的烯基，R ^N132表示碳原子數1至5的烷基或碳原子數1至4的烷氧基)。

(In the formula, R ^N131 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N132} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ).

R ^{N131 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably ethyl, propyl or butyl. R ^{N132 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 3 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, preferably 1-propenyl, ethoxy, or propoxy基 or butoxy.

The compound represented by the general formula (N-1-3) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When the improvement of Δε is important, it is better to set the content higher. When the solubility at low temperature is important, the effect is higher if the content is set higher, and when T _NI is important, the content is set higher if the effect is higher. high. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

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

Furthermore, the compound represented by general formula (N-1-3) is preferably a compound selected from the group of compounds represented by formula (N-1-3.1) to formula (N-1-3.21), preferably The compounds represented by (N-1-3.1) to (N-1-3.7) and formula (N-1-3.21) are preferably formula (N-1-3.1), formula (N-1-3.2), Compounds represented by formula (N-1-3.3), formula (N-1-3.4), and formula (N-1-3.6).

The compounds represented by formula (N-1-3.1) to formula (N-1-3.4), formula (N-1-3.6) and formula (N-1-3.21) can be used alone or in combination, but more It is preferably a combination of formula (N-1-3.1) and formula (N-1-3.2); selected from formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6) A combination of 2 or 3 in. Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound alone or in the compound is 5%, 10%, 13%, 15%, 17%, 20%. The upper limit of the preferable 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.

(式中，R ^N141表示碳原子數1至5的烷基或碳原子數2至5的烯基，R ^N142表示碳原子數1至5的烷基或碳原子數1至4的烷氧基)。

(In the formula, R ^N141 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N142} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ).

R ^N141 and R ^N142 are each independently 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, preferably methyl or propyl. , Ethoxy or butoxy.

The compound represented by the general formula (N-1-4) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When the improvement of Δε is important, it is better to set the content higher. When the solubility at low temperature is important, the effect will be higher if the content is set higher. When the T _NI is important, the content will be set lower to achieve the effect. high. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

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

Furthermore, the compound represented by general formula (N-1-4) is preferably a compound selected from the group of compounds represented by formula (N-1-4.1) to formula (N-1-4.14), preferably The compounds represented by (N-1-4.1) to (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) The compound shown.

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

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

(式中，R ^N1161表示碳原子數1至5的烷基或碳原子數2至5的烯基，R ^N1162表示碳原子數1至5的烷基或碳原子數1至4的烷氧基)。

(In the formula, R ^N1161 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N1162} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ).

R ^{N1161 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and is preferably an ethyl group, a propyl group, or a butyl group. R ^{N1162 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, preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-16) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When the improvement of Δε is important, it is better to set the content higher. When the solubility at low temperature is important, the effect is higher if the content is set higher, and when T _NI is important, the content is set higher if the effect is higher. high. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

The lower limit of the preferable content of the compound represented by formula (N-1-16) is 5%, 10%, 13%, 15%, 17%, 20% relative to the total amount of the composition of the present invention. The upper limit of the preferable 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-1-18) is the following compound.

(式中，R ^N1181表示碳原子數1至5的烷基或碳原子數2至5的烯基，R ^N1182表示碳原子數1至5的烷基或碳原子數1至4的烷氧基)。

(In the formula, R ^N1181 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N1182} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ).

R ^{N1181 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 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, an alkenyl group having 4 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-1-18) may be used alone, or two or more compounds may be used in combination. 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 temperatures, transition temperature, electrical reliability, and birefringence. Regarding the kind of compound used, for example, as an embodiment of the present invention, there are one kind, two kinds, three kinds, four kinds, and five or more kinds.

When the improvement of Δε is important, it is better to set the content higher. When the solubility at low temperature is important, the effect is higher if the content is set higher, and when T _NI is important, the content is set higher if the effect is higher. high. Furthermore, in the case of improving drip marks and residual image characteristics, it is preferable to set the range of the content to a medium level.

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

Furthermore, the compound represented by general formula (N-1-18) is preferably a compound selected from the group of compounds represented by formula (N-1-18.1) to formula (N-1-18.5), preferably 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 liquid crystal composition of the present invention contains a polymerizable compound represented by the general formula (II) as the fourth component.

(式中，R ²⁰¹、R ²⁰²、R ²⁰³、R ²⁰⁴、R ²⁰⁵、R ²⁰⁶、R ²⁰⁷、R ²⁰⁸、R ²⁰⁹及R ²¹⁰分別獨立地表示P ²¹-S ²¹-、可被氟原子取代的碳原子數1至18的烷基、可被氟原子取代的碳原子數1至18的烷氧基、氟原子或氫原子中的任一者，P ²¹分別獨立地表示選自式(R-1)至式(R-7)中的聚合性基團，

(式中，R ¹¹、R ¹²、R ¹³、R ¹⁴及R ¹⁵分別獨立地表示碳原子數1至5的烷基、氟原子或氫原子中的任一者，m ^r5、m ^r7、n ^r5及n ^r7分別獨立地表示0、1、或2，但氧原子不直接相鄰)，S ²¹表示單鍵或碳數1至15的伸烷基，該伸烷基中的1個或2個以上的-CH ₂-能夠以氧原子不直接相鄰的方式被-O-、-OCO-或-COO-取代，n ²¹表示0、1或2，A ²¹表示選自由以下(a)～(c)基團組成的群中的基團， (a)1,4-伸環己基(存在於該基團中的1個-CH ₂-或不相鄰的2個以上的-CH ₂-可被取代為-O-)、 (b)1,4-伸苯基(存在於該基團中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)、及 (c)萘-2,6-二基、1,2,3,4-四氫萘-2,6-二基或十氫萘-2,6-二基(存在於萘-2,6-二基或1,2,3,4-四氫萘-2,6-二基中的1個-CH＝或不相鄰的2個以上的-CH＝可被取代為-N＝)， 上述基團(a)、基團(b)及基團(c)可分別獨立地被碳原子數1至12的烷基、碳原子數1至12的烷氧基、鹵素、氰基、硝基或P ²¹-S ²¹-取代，在上述通式(II)的1分子中具有至少1個以上的P ²¹-S ²¹-，L ²¹表示單鍵、-OCH ₂-、-CH ₂O-、-C ₂H ₄-、-OC ₂H ₄O-、-COO-、-OCO-、-CH＝CR ^a-COO-、-CH＝CR ^a-OCO-、-COO-CR ^a＝CH-、-OCO-CR ^a＝CH-、-(CH ₂) _z-COO-、-(CH ₂) _z-OCO-、-OCO-(CH ₂) _z-、-COO-(CH ₂) _z-、-CH＝CH-、-CF ₂O-、-OCF ₂-或-C≡C-(式中，R ^a分別獨立地表示氫原子或碳原子數1至3的烷基，上述式中，z分別獨立地表示1至4的整數)，當P ²¹、S ²¹、及A ²¹存在複數個時，分別可相同亦可不同)。

(In the formula, R ²⁰¹ , R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , R ²⁰⁹ and R ²¹⁰ each independently represent P ²¹ -S ²¹ -, which may be substituted by a fluorine atom Any one of an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 18 carbon atoms that may be substituted with a fluorine atom, a fluorine atom, or a hydrogen atom, and P ²¹ each independently represents selected from the formula (R- 1) to the polymerizable group in formula (R-7),

(In the formula, R ¹¹ , R ¹² , R ¹³ , R ¹⁴ and R ¹⁵ each independently represent any of an alkyl group having 1 to 5 carbon atoms, a fluorine atom, or a hydrogen atom, m ^r5 , m ^r7 , n ^r5 and n ^r7 each independently represent 0, 1, or 2, but the oxygen atom is not directly adjacent), S ²¹ represents a single bond or an alkylene group having 1 to 15 carbon atoms, and 1 or 2 of the alkylene group More than one -CH ₂ -can be substituted by -O-, -OCO- or -COO- in such a way that the oxygen atom is not directly adjacent, n ²¹ represents 0, 1 or 2, and A ²¹ represents selected from the following (a)~ (c) Groups in the group consisting of groups, (a) 1,4-cyclohexylene (1 -CH ₂ -existing in the group or 2 or more non-adjacent -CH _2- Can be substituted with -O-), (b) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted with -N =), and (c) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene- One -CH= in 2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl or two or more non-adjacent -CH= can be substituted with -N =), the above-mentioned groups (a), group (b) and group (c) may be independently substituted by an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, a halogen, or a cyanide group. Group, nitro group or P ²¹ -S ^{21 -substitution, having at least one P 21} -S ²¹ -in one molecule of the general formula (II), L ²¹ represents a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -OC ₂ H ₄ O-, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, ^{-OCO-CR a} =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ ) _z -OCO-, -OCO-(CH ₂ ) _z -, -COO-(CH ₂ ) _z -, -CH=CH-, -CF ₂ O-, -OCF ₂ -or -C≡C- (wherein R ^a independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, the above formula Where z independently represents an integer from 1 to 4), and when ^{there are plural P 21} , S ²¹ , and A ²¹ , they may be the same or different).

In the general formula (II), the compound represented by the general formula (II) preferably has 1 or 2 or more P ²¹ -S ²¹ -in one molecule, and preferably has 4 or less P ²¹ -S ^{21 -, the number of P 21} -S ²¹ -present in 1 molecule of the above general formula (II) is preferably 1 or more and 4 or less, more preferably 1 or more and 3 or less, as represented by the above general formula (II) ^{The number of P 21} -S ²¹ -in the molecule of the compound is particularly preferably 2 or 3. That is, the compound represented by the general formula (II) has a structure in which at least two benzene rings and ring A ^{21 are} connected as necessary, and the plural benzene rings and ring A ²¹ have at least one P ²¹ -S ^21- Therefore, the compound represented by the general formula (II) exerts functions and effects as a polymerizable compound.

In the above general formula (II), one or two or more selected from the group consisting of ^{R 201} , R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , R ²⁰⁹ and R ²¹⁰ When it is P ²¹ -S ²¹ -, preferably any one or more of ^{R 201} , R ²⁰² , R ²⁰⁴ , R ²⁰⁷ , R ²⁰⁹ or R ^{210 is P 21} -S ²¹ -, more preferably R ²⁰¹ And R ²¹⁰ is P ²¹ -S ²¹ -.

In the above general formula (II), R ²⁰¹ and R ²¹⁰ are each independently preferably P ²¹ -S ²¹ -, in this case, R ²⁰¹ and R ²¹⁰ may be the same P ²¹ -S ²¹ -, also Can be different P ²¹ -S ²¹ -.

In the above general formula (II), R ²⁰¹ , R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , R ²⁰⁹ and R ²¹⁰ each independently represent P ²¹ -S ²¹ -, Any one of an alkyl group having 1 to 18 carbon atoms substituted by a fluorine atom, an alkoxy group having 1 to 18 carbon atoms that may be substituted by a fluorine atom, a fluorine atom or a hydrogen atom, in this case, the above The preferable number of carbon atoms of the alkyl group and the alkoxy group is 1 to 16, more preferably 1 to 10, still more preferably 1 to 8, still more preferably 1 to 6, and still more preferably 1 to 4. Especially preferably, it is 1 to 3. In addition, the above-mentioned alkyl group and alkoxy group may be linear or branched, and are particularly preferably linear.

In the above general formula (II), R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ and R ²⁰⁹ are each independently preferably P ²¹ -S ²¹ -, and the number of carbon atoms is 1 to The alkyl group of 3, the alkoxy group having 1 to 3 carbon atoms, a fluorine atom or a hydrogen atom, more preferably P ²¹ -S ²¹ -, a methyl group, a methoxy group, a fluorine atom or a hydrogen atom, and still more preferably a methyl group Group, methoxy group, fluorine atom or hydrogen atom.

P ^{21 is} preferably the formula (R-1), more preferably an acryloyl group or a methacryloyl group, and still more preferably a methacryloyl group.

S ^{21 is} preferably a single bond or an alkylene group having 1 to 3 carbon atoms, and more preferably a single bond.

In the above general formula (II), n ^{21 is} preferably 0 or 1.

In the above general formula (II), A ^{21 is} preferably 1,4-phenylene or naphthalene-2,6-diyl, and more preferably 1,4-phenylene.

In the above general formula (II), L ^{21 is} preferably a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-, -CH=CH-COO- , -CH=CH-OCO-, -COO-CH=CH-, _{-OCO-CH=CH-, -C 2} H ₄ -COO-, -C ₂ H ₄ -OCO-, -OCO-C ₂ H ₄ -, -COO-C ₂ H ₄ -, -CH=CH-, -CF ₂ O-, -OCF ₂ -or -C≡C-.

Regarding the total content of the polymerizable compound represented by the general formula (II), it contains 0.01 to 5% by mass, and the lower limit of the content is preferably 0.02% by mass, more preferably 0.03% by mass, more preferably 0.04% by mass, more preferably 0.05% by mass, preferably 0.06% by mass, preferably 0.07% by mass, preferably 0.08% by mass, preferably 0.09% by mass, preferably 0.1% by mass, preferably 0.15% by mass, preferably 0.2 % By mass, preferably 0.25% by mass, preferably 0.3% by mass, preferably 0.35% by mass, preferably 0.4% by mass, preferably 0.5% by mass, preferably 0.55% by mass; and the upper limit of the content is lower Preferably it is 4.5% by mass, preferably 4% by mass, more preferably 3.5% by mass, preferably 3% by mass, preferably 2.5% by mass, preferably 2% by mass, preferably 1.5% by mass, more preferably 1% by mass, preferably 0.95% by mass, preferably 0.9% by mass, preferably 0.85% by mass, preferably 0.8% by mass, preferably 0.75% by mass, preferably 0.7% by mass, preferably 0.65 mass%, preferably 0.6 mass%, more preferably 0.55 mass%.

The compound represented by general formula (II) of the present invention is preferably a polymerizable compound represented by general formula (IV).

In the above general formula (IV), R ⁷ and R ⁸ each independently represent any one of the above formula (R-1) to formula (R-7), and X ¹ to X ⁸ each independently represent a fluorine atom , A hydrogen atom, a trifluoromethyl group, a trifluoromethoxy group, an alkyl group having 1 to 3 carbon atoms, or an alkoxy group having 1 to 3 carbon atoms. In the above general formula (IV), R ⁷ and R ⁸ each independently represent a methacryl group or an acryl group.

The compound represented by the above general formula (IV) is more preferably one or two or more selected from the group consisting of the general formula (IV-11) to the general formula (IV-19), and particularly preferably the general formula (IV- 11) General formula (IV-12), general formula (IV-16), general formula (IV-17).

The hydrogen atom in the 1,4-phenylene group in the above general formula may be further substituted by -F, -CF ₃ , -CH ₃ or any of formula (R-1) to formula (R-7).

Regarding the total content of the polymerizable compound represented by the general formula (IV), it contains 0.01 to 5% by mass, and the lower limit of the content is preferably 0.02% by mass, more preferably 0.03% by mass, more preferably 0.04% by mass, more preferably 0.05% by mass, preferably 0.06% by mass, preferably 0.07% by mass, preferably 0.08% by mass, preferably 0.09% by mass, preferably 0.1% by mass, preferably 0.15% by mass, preferably 0.2 % By mass, preferably 0.25% by mass, preferably 0.3% by mass, preferably 0.35% by mass, preferably 0.4% by mass, preferably 0.5% by mass, preferably 0.55% by mass; and the upper limit of the content is lower Preferably it is 4.5% by mass, preferably 4% by mass, more preferably 3.5% by mass, preferably 3% by mass, preferably 2.5% by mass, preferably 2% by mass, preferably 1.5% by mass, more preferably 1% by mass, preferably 0.95% by mass, preferably 0.9% by mass, preferably 0.85% by mass, preferably 0.8% by mass, preferably 0.75% by mass, preferably 0.7% by mass, preferably 0.65 mass%, preferably 0.6 mass%, more preferably 0.55 mass%.

The dielectric anisotropy (Δε) of the liquid crystal composition of the present invention at 20°C is -2.0 to -8.0, preferably -2.0 to -6.0, more preferably -2.0 to -5.0, and particularly preferably -2.5 to -5.0.

The refractive index anisotropy (Δn) of the liquid crystal composition of the present invention at 20°C is 0.08 to 0.14, more preferably 0.09 to 0.13, and particularly preferably 0.09 to 0.12. In further detail, it is preferably 0.10 to 0.13 when corresponding to a thin cell gap, and preferably 0.08 to 0.10 when corresponding to a thick cell gap.

The viscosity (η) of the liquid crystal composition of the present invention at 20°C is 10 to 50 mPa·s, preferably 10 to 45 mPa·s, preferably 10 to 40 mPa·s, preferably 10 to 35 mPa·s, more preferably It is 10 to 30 mPa·s, more preferably 10 to 25 mPa·s, and particularly preferably 10 to 22 mPa·s.

_{The rotational viscosity (γ 1} ) of the liquid crystal composition of the present invention at 20°C is 50 to 160 mPa·s, preferably 55 to 160 mPa·s, preferably 60 to 160 mPa·s, preferably 60 to 150 mPa·s , Preferably 60 to 140mPa·s, preferably 60 to 130mPa·s, preferably 60 to 125mPa·s, more preferably 60 to 120mPa·s, more preferably 60 to 115mPa·s, more preferably 60 To 110mPa·s, particularly preferably 60 to 100mPa·s.

The nematic-isotropic liquid phase transition temperature (T _ni ) of the liquid crystal composition of the present invention is 60°C to 120°C, more preferably 70°C to 100°C, and particularly preferably 70°C to 85°C.

The total of the compounds represented by general formula (i), general formula (L), general formula (N-1d), general formula (N-1), and general formula (II) relative to the total amount of the composition of the present invention The lower limit of the preferred content 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%.

The lower limit of the total preferable content of the compound represented by the general formula (i) in the neutral compound (the compound represented by the general formula (i) and the compound represented by the general formula (L)) is 0.5%, 1%, 3%, 5%, 7%, 9%, 12%, 15%. The preferred upper limit value is 20%, 15%, 12%, 10%, 8%, 6%, 5%.

With respect to the total amount of the liquid crystal composition of the present invention, the lower limits of the total preferable content of the compounds represented by general formula (i) and general formula (L) are 5%, 10%, 15%, 20%, 25%, 30%. The upper limit of the preferred content is 70%, 60%, 55%, 50%, 45%, 40%.

In the liquid crystal composition of the present invention, as a combination of neutral compounds, it is preferable to combine compounds represented by general formulas (i), (L-1), (L-4) and/or (L-5) combination.

In the liquid crystal composition of the present invention, as a combination of neutral compounds, it is preferable to combine compounds represented by general formulas (i), (L-1-3), and (L-2).

In the liquid crystal composition of the present invention, as a combination of neutral compounds, it is preferable to combine compounds represented by general formulas (i), (L-1-3) and (L-3).

In the liquid crystal composition of the present invention, in order to increase the polymerization rate of the polymerizable compound, it is preferable to combine the compounds represented by the general formula (i) and (L-3.6) or (L-3.7).

When attaching importance to response speed, it is preferable to contain a compound having an alkenyl group. With respect to the total amount of the composition of the present invention, the upper limit of the total preferable content of the compounds having alkenyl groups is 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60% , 55%, 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, 5%.

When reliability is important, it is preferable to reduce compounds having alkenyl groups. The upper limit value of the total preferable content of the alkenyl group-containing compound relative to the total amount of the composition of the present invention is 30%, 25%, 20%, 15%, 13%, 10%, 8%, 5% , 3%, 2%, 1%, preferably substantially free.

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

In the liquid crystal composition of the present invention, when reliability and long-term stability are important, the content of the compound having a carbonyl group relative to the total mass of the composition is preferably 5% or less, more preferably 3 % Or less, more preferably 1% or less, and most preferably substantially no content.

When attaching importance to stability based on UV irradiation, it is preferable to set the content of the compound substituted with chlorine atoms to 15% or less, preferably 10% or less, and more preferably to the total mass of the above-mentioned composition. 8% or less, more preferably 5% or less, more preferably 3% or less, and still more preferably substantially free.

It is preferable to set the content of compounds whose intramolecular ring structures are all 6-membered rings to be large, and it is preferable to set the content of compounds whose intra-molecular ring structures are all 6-membered rings relative to the total mass of the above-mentioned composition. It is 80% or more, more preferably 90% or more, still more preferably 95% or more, and most preferably, the composition is substantially composed of compounds whose intramolecular ring structures are all 6-membered rings.

In order to improve the tilt stability of the composition, it is preferable to increase the content of the compound whose side chain is an alkyl group and alkoxy group, and it is preferable to set the content of the compound whose side chain is an alkyl group and alkoxy group with respect to The total mass of the above composition is set to 85% or more, preferably 87% or more, preferably 90% or more, preferably 93% or more, preferably 95% or more, preferably It is set to 98% or more, and more preferably set to be substantially 100%. Substantially 100% means 100% except for the polymerizable compound, stabilizer, and incidental impurities.

In order to suppress deterioration due to oxidation of the composition, it is preferable to set the content of the compound having a cyclohexenylene group as a ring structure to be small, and it is preferable to set the content of the compound having a cyclohexenylene group to The total mass of the above composition is 10% or less, preferably 8% or less, more preferably 5% or less, more preferably 3% or less, and more preferably substantially free.

When focusing on improving the viscosity and improving the Tni, it is preferable to set the content of the compound having a 2-methylbenzene-1,4-diyl group capable of substituting a hydrogen atom with a halogen in the molecule to be small, and it is more preferable In order to set the content of the compound having 2-methylbenzene-1,4-diyl group in the molecule relative to the total mass of the composition to be 10% or less, preferably 8% or less, more preferably It is 5% or less, preferably 3% or less, and more preferably substantially not contained.

In order to solve the problem of the present invention, it is necessary to combine the compound represented by the general formula (i) as the first component, the compound represented by the general formula (L) as the second component, and the general formula (N-1d) as the third component. ) And/or a combination of a compound represented by general formula (N-1) and a polymerizable compound represented by general formula (II) as the fourth component.

In the present invention, "substantially free" means not containing other than inadvertently contained substances.

When a monomer is added to the composition of the present invention, even if a polymerization initiator is not present, the polymerization proceeds, but in order to promote polymerization, a polymerization initiator may be contained. Examples of the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzal ketals, and phosphine oxides.

In addition to the above-mentioned compounds, the liquid crystal composition of the present invention may also contain commonly used nematic liquid crystals, smectic liquid crystals, cholesteric liquid crystals, polymerizable compounds other than the above, antioxidants, ultraviolet absorbers, light stabilizers, or infrared absorbers.剂 etc.

Examples of antioxidants include hindered phenols represented by general formula (Q-1) to general formula (Q-4).

In the above formula, R ^Q1 each independently represents an alkyl group having 1 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, or an alkylene oxide having 2 to 30 carbon atoms. The group, one -CH ₂ -existing in the group or two or more non-adjacent -CH ₂ -can be independently substituted by -O-, -COO-, -OCO- or -S-, and, One or two or more hydrogen atoms present in the group may be substituted with a fluorine atom or a chlorine atom, respectively.

M ^Q1 represents an alkylene group having 1 to 15 carbon atoms (one or more -CH ₂ -in the alkylene group can also be -O-, -CO- in such a way that oxygen atoms are not directly adjacent to each other). , -COO-, -OCO- substituted), -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CF ₂ CF ₂ -, -CH =CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -CH=CH-, -C≡C-, single bond, 1,4-extension A phenyl group (any hydrogen atom in the 1,4-phenylene group may be substituted by a fluorine atom) or a trans-1,4-cyclohexylene group, preferably an alkylene group having 1 to 14 carbon atoms.

In general formula (Q-1) to general formula (Q-4), one or two or more non-adjacent -CH= in the 1,4-phenylene group may be substituted with -N=. In addition, the hydrogen atoms in the 1,4-phenylene group may each independently be substituted with a fluorine atom or a chlorine atom.

In general formula (Q-2) and general formula (Q-4), one or more non-adjacent two or more -CH ₂ -in 1,4-cyclohexylene may be -O- or -S -replace. In addition, the hydrogen atoms in the 1,4-cyclohexylene group may each independently be substituted with a fluorine atom or a chlorine atom.

As the antioxidant, more preferably, compounds represented by the following formulas (Q-11) to (Q-41) can be cited.

In the above formula, R ^Q11 to R ^Q13 each independently represent an alkyl group having 1 to 20 carbon atoms, and M ^Q11 and M ^Q12 each independently represent an alkylene group having 1 to 10 carbon atoms.

The liquid crystal composition of the present invention may contain at least one compound represented by the general formula (I-2) as a light stabilizer (HALS).

(式中，R ^H1及R ^H2分別獨立地表示氫原子或碳原子數1至10的烷基，M表示碳原子數1至15的伸烷基，存在於M中的1個以上的-CH ₂-可被-O-、-CH＝CH-、-C≡C-、-CO-、-OCO-、-COO-、反-1,4-伸環己基、1,4-伸苯基、萘-2,6-二基取代)。

(In the formula, R ^H1 and R ^H2 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, M represents an alkylene group having 1 to 15 carbon atoms, and one or more -CH in M ₂ -Can be -O-, -CH=CH-, -C≡C-, -CO-, -OCO-, -COO-, trans-1,4-cyclohexylene, 1,4-phenylene, Naphthalene-2,6-diyl substituted).

In the general formula (I-2), R ^H1 and R ^{H2 are} particularly preferably hydrogen atoms. In the case of an alkyl group, the number of carbon atoms is preferably 1 to 8, more preferably the number of carbon atoms is 1 to 5, still more preferably the number of carbon atoms is 1 to 3, and particularly preferably the number of carbon atoms is 1. .

In the general formula (I-2), M represents an alkylene having 1 to 15 carbon atoms, and considering the viscosity imparted to the liquid crystal composition and its own volatility, M is preferably an alkylene having 2 to 10 carbon atoms The group is more preferably an alkylene group having 4 to 8 carbon atoms, and still more preferably an alkylene group having 6 or 8 carbon atoms.

Specifically, compounds represented by general formula (I-24), general formula (I-26), and general formula (I-28) can be cited. ^{R H1} and R ^H2 in the equation are as described above.

In further detail, the compounds represented by general formula (I-24H), general formula (I-26H) and general formula (I-28H) can be cited, and the best is the double (I-28H) represented by general formula (I-28H). 2,2,6,6,-Tetramethyl-4-piperidinyl) sebacate.

Moreover, the compound represented by general formula (I-3) is also preferable. Since the compound represented by the general formula (I-3) has a high effective amine concentration, it is a compound that acts more effectively. In addition, light stabilizers with a small molecular weight adsorb the alignment film in the liquid crystal display element to induce display unevenness in many cases, but the compound represented by the general formula (I-3) has a large molecular weight, so it can prevent the induction of display unevenness .

(式中，R ^H3、R ^H4及R ^H5分別獨立地表示氫原子或碳原子數1至10的烷基。n ^H1及n ^H2分別獨立地表示0至2。n ^H3表示1或2。當R ^H5存在複數個時，該等可相同亦可不同)。

(In the formula, R ^H3 , R ^H4 and R ^H5 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. n ^H1 and n ^H2 each independently represent 0 to ^{2. n H3} represents 1 or 2. When When ^{there are plural R H5} , these may be the same or different).

In the general formula (I-3), R ^H3 , R ^H4 and R ^{H5 are} particularly preferably hydrogen atoms. In the case of an alkyl group, the number of carbon atoms is preferably 1 to 8, more preferably the number of carbon atoms is 1 to 5, still more preferably the number of carbon atoms is 1 to 3, and still more preferably the number of carbon atoms is 1.

Specifically, compounds represented by general formula (I-31), general formula (I-32) and general formula (I-33) are preferred. ^{R H3} , R ^H4 and R ^H5 in the equation are as described above.

More specifically, compounds represented by formula (I-31H), formula (I-31C), formula (I-32H), and formula (I-33H) are preferred.

The liquid crystal composition of the present invention preferably contains a light stabilizer (HALS) in the composition below 0.01% or more, preferably 0.02% or more, preferably 0.03% or more, preferably 0.05% Above, preferably 0.07% or more, preferably 0.1% or more, preferably 0.15% or more, preferably 0.2% or more, preferably 0.25% or more, preferably 0.3% or more, Preferably it contains 0.5% or more, and more preferably contains 1% or more. In addition, the above limit is preferably 5% or less, preferably 3% or less, preferably 1% or less, preferably 0.5% or less, preferably 0.45% or less, and preferably 0.4 % Or less, preferably 0.35% or less, preferably 0.3% or less, preferably 0.25% or less, preferably 0.2% or less, preferably 0.15% or less, preferably 0.1% or less , The content is preferably 0.07% or less, preferably 0.05% or less, and more preferably 0.03% or less.

More specifically, the content is preferably 0.01 to 5% by mass, more preferably 0.01 to 0.3% by mass, more preferably 0.02 to 0.3% by mass, and particularly preferably 0.05 to 0.25% by mass. In further detail, when emphasis is placed on suppressing precipitation at low temperatures, the content is preferably 0.01 to 0.1% by mass.

Regarding the polymerizable compound-containing composition of the present invention, the polymerizable compound contained therein is polymerized by ultraviolet irradiation, thereby being endowed with liquid crystal alignment ability, and is used for a liquid crystal that uses the birefringence of the composition to control the amount of light transmitted Display components.

The liquid crystal display element using the composition of the present invention does not have or has very little display failure such as image sticking (IS: Image Sticking), high VHR, and excellent reliability. It is especially suitable for the PSVA mode or PSA of liquid crystal display elements for active matrix driving. mode. In addition, it can also be applied to a liquid crystal display element characterized by not having an alignment film.

Furthermore, in the manufacturing process of the liquid crystal display element based on the ODF method, it is necessary to drop the most appropriate liquid crystal injection amount according to the size of the liquid crystal display element. The impact of sudden pressure changes and shocks in the application device is small, and liquid crystal can be continuously dropped for a long time and stably, so the yield of the liquid crystal display element can also be kept high. Especially for small liquid crystal display elements commonly used in smartphones that are popular recently, it is difficult to control the deviation from the optimal value within a certain range because the most appropriate liquid crystal injection amount is small, but by using the liquid crystal composition of the present invention , Even in a small liquid crystal display element, a stable discharge amount of liquid crystal material can be realized.

According to the liquid crystal composition of the present invention, the polymerization rate of the polymerizable compound is sufficiently fast and it is possible to obtain a liquid crystal display element with no or very few display defects such as IS due to changes in the pretilt angle, high VHR, and excellent reliability. In summary, the liquid crystal composition of the present invention can significantly improve the production efficiency of PSA-type or PSVA-type liquid crystal display elements, and its industrial use value is very high.

The liquid crystal composition of the present invention is suitable for the production of PSA type or PSVA type liquid crystal display elements, and is also suitable for the production of NPS type liquid crystal display elements. In addition, it is also suitable for the production of PI-less liquid crystal display elements characterized by not having an alignment film.

The liquid crystal composition of the present invention is also suitable for liquid crystal display elements that do not have an alignment film, that is, a mode commonly referred to as PI-less. For example, it is preferable to record in Japanese Patent Application 2013-552125, Japanese Patent Application 2014-517515, Japanese Patent 06081361, Japanese Patent Application 2015-546888, Japanese Patent Application 2017-12710, WO2017041893A, Japanese Patent 06070973, WO17/047177, etc. The compound with spontaneous alignment is used in combination with the liquid crystal composition of the present invention.

The liquid crystal composition of the present invention is useful in liquid crystal display elements for active matrix driving, and can be used in liquid crystal display elements such as PSA, PSVA, PS-IPS, PS-FFS, and NPS.

The liquid crystal display element of the present invention preferably has: a first substrate and a second substrate arranged oppositely; a common electrode provided on the first substrate or the second substrate; And there is a pixel electrode of a thin film transistor; and a liquid crystal layer containing a liquid crystal composition provided between the first substrate and the second substrate. According to needs, an alignment film that controls the alignment direction of liquid crystal molecules may be provided on the opposite side of at least one of the first substrate and/or the second substrate in a manner in contact with the above-mentioned liquid crystal layer. As the alignment film, a vertical alignment film, a horizontal alignment film, etc. 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) can be used. Etc.) and other well-known alignment films. Furthermore, the color filter can be appropriately provided on the first substrate or the second substrate, and the color filter can also be provided on the above-mentioned pixel electrode and the common electrode.

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

The color filter can be produced by, for example, a pigment dispersion method, a printing method, an electrodeposition method, or a dyeing method. Taking a method of manufacturing a color filter by the pigment dispersion method as an example, a curable coloring composition for a color filter is coated on the transparent substrate, patterning is performed, and then the color filter is cured by heating or light irradiation. By performing this step for each of the three colors of red, green, and blue, it is possible to produce a pixel portion for a color filter. In addition, pixel electrodes provided with active elements such as TFTs, thin-film diodes, metal insulators and metal resistivity elements may also be provided on the substrate.

Preferably, the first substrate and the second substrate are opposed to each other such that the common electrode and the pixel electrode layer are inside.

The interval between the first substrate and the second substrate can be adjusted by spacers. At this time, it is preferable to adjust so that the thickness of the obtained light control layer may become 1-100 micrometers. It is more preferably 1.5 to 10 μm. When a polarizing plate is used, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the cell thickness d so as to maximize the contrast. In addition, when there are two polarizing plates, the polarization axis of each polarizing plate may be adjusted and the viewing angle and contrast may be adjusted so that the viewing angle and contrast become good. Furthermore, a retardation film for expanding the viewing angle can also be used. As the spacer, for example, glass particles, plastic particles, alumina particles, photoresist materials, etc. can be cited. After that, if necessary, a sealant such as an epoxy-based thermosetting composition is screen-printed on the substrate in a form provided with a liquid crystal injection port, the substrates are bonded to each other, and the sealant is thermally cured by heating.

Regarding the method of sandwiching the liquid crystal composition between two substrates, a general vacuum injection method, ODF method, or the like can be used.

As a method of polymerizing the polymerizable compound contained in the liquid crystal composition of the present invention, in order to obtain good alignment performance of the liquid crystal, it is desirable to perform the polymerization at a moderate polymerization rate. Therefore, it is preferable to use it alone or in combination or sequentially irradiating ultraviolet rays. Or electron beam and other active energy rays polymerization method. In the case of 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 irradiation surface side must be provided with appropriate transparency with respect to active energy rays. In addition, the following method can also be used: after light irradiation uses a mask to polymerize only a specific part, change the alignment state of the unpolymerized part by changing conditions such as electric field, magnetic field, or temperature, and further irradiate active energy rays Make it aggregate. 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 while performing 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 according to 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 PSA 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 a PSA-type or PSVA-type liquid crystal display element, when the polymerizable compound remains as it is without being polymerized after the element is manufactured, IS may 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, particularly preferably less than the lower detection limit or 0.

There is no particular limitation on the temperature during irradiation of active energy rays such as ultraviolet rays or electron beams used when polymerizing the polymerizable compound contained in the liquid crystal composition of the present invention. For example, when the liquid crystal composition of the present invention is applied to a liquid crystal display element provided with a substrate having an alignment film, it is preferably a temperature range in which the liquid crystal state of the liquid crystal composition can be maintained. That is, it is preferable to polymerize at 15 to 50°C.

As a lamp that generates ultraviolet rays, metal halide lamps, high-pressure mercury lamps, ultra-high-pressure mercury lamps, and the like can be used. Preferably, it is an ultra-high pressure UV lamp of USHIO company, and a fluorescent type ultraviolet lamp of TOSHIBA company. In addition, as the wavelength of the ultraviolet rays to be irradiated, it is preferable to irradiate ultraviolet rays whose wavelength range is not in the absorption wavelength range of the liquid crystal composition, and it is preferable to cut off the ultraviolet rays as necessary and use. The intensity of the irradiated ultraviolet rays is preferably 0.1 mW/cm ² to 100 W/cm ² , and more preferably 2 mW/cm ² to 50 W/cm ² . The energy amount of the irradiated ultraviolet rays can be appropriately adjusted, and is preferably 10 mJ/cm ² to 500 J/cm ² , and more preferably 100 mJ/cm ² to 200 J/cm ² . Example

Hereinafter, examples are listed to further describe the present invention, but the present invention is not limited by these examples. In addition, "%" in the composition of the following Examples and Comparative Examples means "mass %".

In addition, in the examples, the following abbreviations are used for the description of the compounds. (Ring structure)

[Table 1] (Side chain structure) Abbreviation 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).

[Table 2] (Connection structure) Abbreviation Chemical structure -n- -C _n H _2n- -nO- -C _n H _2n O- -On- -OC _n H _2n- -COO- -C(=O)-O- -OCO- -OC(=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). In the examples, the measured characteristics are as follows. Δn: Refractive index anisotropy at 293K Δε: Dielectric constant anisotropy at 293K T _ni : Nematic-isotropic liquid phase transition temperature (℃) γ ₁ : Rotational viscosity at 293K (mPa·s ) (Manufacturing method and evaluation method of liquid crystal display element)

First, after coating a polyimide alignment film that initiates vertical alignment on a substrate with ITO, rubbing treatment is performed on the polyimide alignment film to obtain a liquid crystal cell containing a substrate with ITO. The liquid crystal composition containing a polymerizable compound was injected into the liquid crystal cell with a cell gap of 3.5 μm using a vacuum injection method. As a vertical alignment film forming material, JALS2096 manufactured by JSR Corporation was used.

Thereafter, the liquid crystal cell into which the liquid crystal composition containing the polymerizable compound was injected was irradiated with ultraviolet rays using a high-pressure mercury lamp in a state where a voltage of 10 V was applied at a frequency of 100 Hz. At this time, the illuminance measured under the condition of the center wavelength of 365 nm was ^{adjusted so that the illuminance became 100 mW/cm 2} , and ultraviolet rays with a cumulative light amount of 20 J/cm ^{2 were irradiated.} The above-mentioned ultraviolet irradiation condition was set to irradiation condition 1. With this irradiation condition 1, a pretilt angle is given to the liquid crystal molecules in the liquid crystal cell.

Then, a fluorescent UV lamp was used and adjusted so that the illuminance measured under the condition of a center wavelength of 313 nm was 3 mW/cm ² , and further irradiated with ultraviolet rays with a cumulative light amount of 10 J/cm ² to obtain a liquid crystal display element. Let the above-mentioned ultraviolet irradiation condition be irradiation condition 2. Irradiation condition 2 reduces the residual amount of the polymerizable compound in the unreacted liquid crystal cell under irradiation condition 1.

After the ultraviolet irradiation, the display failure (image sticking) caused by the change in the pretilt angle was evaluated. First, the pretilt angle of the liquid crystal display element is measured as the pretilt angle (initial stage). A voltage of 30V was applied to the liquid crystal display element at a frequency of 100 Hz, and the backlight was irradiated for 24 hours at the same time. Thereafter, the pretilt angle was measured and used as the pretilt angle (after the test). The value obtained by subtracting the pretilt angle (after the test) from the measured pretilt angle (initial stage) is used as the pretilt angle change amount (=absolute value of the pretilt angle change) [°]. The pretilt angle was measured using OPTIPRO manufactured by Shintec.

The closer the pretilt angle change amount is to 0[°], the lower the possibility of display failure due to the pretilt angle change, and the higher the possibility of display failure due to the pretilt angle change when it reaches 0.5[°] or more. .

The residual amount [ppm] of the polymerizable compound in the liquid crystal display element after irradiating ultraviolet rays under the conditions of the above-mentioned irradiation condition 1 and irradiation condition 2, respectively, was measured. The method for measuring the residual amount of the polymerizable compound will be described. First, the liquid crystal display element is decomposed to obtain an acetonitrile solution containing eluted components of the liquid crystal composition, the polymer, and the unreacted polymerizable compound. It was analyzed by high performance liquid chromatography to determine the peak area of each component. The amount of the remaining polymerizable compound is determined from the ratio of the peak area of the liquid crystal compound as an index to the peak area of the unreacted polymerizable compound. The residual amount of the polymerizable compound is determined from this value and the amount of the polymerizable compound initially added. In addition, the detection limit of the residual amount of the polymerizable compound is 30 ppm. When the polymerizable compound remains after the ultraviolet irradiation of the irradiation condition 1 and the irradiation condition 2, the possibility of occurrence of display failure due to the remaining polymerizable compound increases.

The voltage holding ratio (VHR) of the liquid crystal display element after irradiating ultraviolet rays under the conditions of the above-mentioned irradiation condition 1 and irradiation condition 2 was measured under the conditions of a frequency of 60 Hz, a voltage of 1 V, and a temperature of 60°C.

(Preparation and evaluation results of liquid crystal composition)

The liquid crystal compositions of LC-1 to LC-4 and LC-R1 to LC-R3 were prepared, and their physical properties were measured. The structure of the liquid crystal composition and the results of its physical properties are shown in the following table.

(實施例1至實施例4及比較例1至2) [table 3]

(Example 1 to Example 4 and Comparative Examples 1 to 2)

To the prepared liquid crystal compositions LC-1 to LC-4 and LC-R1 to LC-R2, a polymerizable compound represented by RM-4 as a polymerizable compound was added at a blending ratio of 0.3% to prepare a polymer containing Liquid crystal composition of sexual compound. Various evaluations were performed as Examples 1 to 4 and Comparative Examples 1 to 2.

[Table 4] Composition (blending ratio %) Polymeric compound (blending ratio %) Residual amount of polymerizable compound [ppm] Change of pretilt angle [°] VHR [%] Example 1 LC-1 (99.7%) RM-4 (0.3%) 95 0.1 98.9 Example 2 LC-2 (99.7%) RM-4 (0.3%) 77 0.1 98.9 Example 3 LC-3 (99.7%) RM-4 (0.3%) 85 0.1 98.8 Example 4 LC-4 (99.7%) RM-4 (0.3%) 99 0.1 98.7 Comparative example 1 LC-R1 (99.7%) RM-4 (0.3%) 171 0.2 98.9 Comparative example 2 LC-R2 (99.7%) RM-4 (0.3%) 44 0.3 95.6

It was confirmed that in Examples 1 to 4, the residual amount of the polymerizable compound after UV irradiation was remarkably small, the amount of change in the pretilt angle was also very small, and the VHR was very high. On the other hand, in Comparative Example 1, the residual amount of the polymerizable compound was very large, suggesting that display defects such as IS are likely to occur. The actual evaluation of the amount of change in the pretilt angle was inferior to the examples. It can be confirmed that in Comparative Example 2, the amount of change in the pretilt angle is large, and the VHR is low.

From the above results, it was confirmed that Examples 1 to 4 solved the problem of the present invention.

The polymerizable compound RM-4 used in Examples 1 to 4 was replaced with RM-3 and a series of evaluations were performed. As a result, it was confirmed that these are also excellent liquid crystal compositions that solve the problems of the present invention, and can be obtained Excellent liquid crystal display element.

The polymerizable compound RM-4 used in Examples 1 to 4 was replaced with RM-2 and a series of evaluations were performed. As a result, it was confirmed that although the results were slightly worse, these were excellent for solving the problems of the present invention. The liquid crystal composition can provide an excellent liquid crystal display element.

The polymerizable compound RM-4 used in Examples 1 to 4 was replaced with RM-1 and a series of evaluations were performed. As a result, it was confirmed that although the results were slightly worse, these were excellent in solving the problems of the present invention. The liquid crystal composition can obtain an excellent liquid crystal display element.

(Example 5 to Example 10)

To the prepared liquid crystal compositions LC-5 to LC-10, a polymerizable compound RM-3 is added to prepare a liquid crystal composition containing a polymerizable compound. Various evaluations were performed as Examples 5 to 10.

[table 5]

[Table 6] Composition (blending ratio %) Polymeric compound (blending ratio %) Residual amount of polymerizable compound [ppm] Change of pretilt angle [°] VHR [%] Example 5 LC-5 (99.75%) RM-3 (0.25%) 53 0.1 98.9 Example 6 LC-6 (99.75%) RM-3 (0.25%) 55 0.1 98.9 Example 7 LC-7 (99.65%) RM-3 (0.35%) 61 0.1 98.7 Example 8 LC-8 (99.6%) RM-3 (0.4%) 59 0.1 98.8 Example 9 LC-9 (99.7%) RM-3 (0.3%) 99 0.1 98.9 Example 10 LC-10 (99.4%) RM-3 (0.6%) 71 0.1 98.9

It can be confirmed that the residual amount of the polymerizable compound of Examples 5 to 10 is remarkably small, the amount of pretilt angle change is also small, and the VHR is also high.

From the above results, it was confirmed that the polymerization rate of the polymerizable compound of the liquid crystal composition of the present invention is sufficiently fast, and it is most suitable for PSA type that has no display defects such as residual image due to changes in pretilt angle, high VHR, and excellent reliability. Or PSVA type liquid crystal display element.

(Example 11 to Example 17)

To the prepared liquid crystal compositions LC-11 to LC-13, the polymerizable compound shown in the following table was added to prepare a liquid crystal composition containing the polymerizable compound. Various evaluations were performed as Examples 11-17.

[Table 7]

[Table 8] Composition (blending ratio %) Polymeric compound (blending ratio %) Residual amount of polymerizable compound [ppm] Change of pretilt angle [°] VHR [%] Example 11 LC-11 (99.7%) RM-3 (0.3%) 42 0.1 99.0 Example 12 LC-12 (99.7%) RM-3 (0.3%) 46 0.1 98.9 Example 13 LC-13 (99.7%) RM-3 (0.3%) 38 0.1 99.0 Example 14 LC-11 (99.7%) RM-4 (0.3%) 34 0.1 99.1 Example 15 LC-12 (99.7%) RM-4 (0.3%) 37 0.1 99.0 Example 16 LC-13 (99.7%) RM-4 (0.3%) 31 0.1 99.0 Example 17 LC-13 (99.7%) RM-2 (0.25%) RM-4 (0.05%) 36 0.1 98.8

It can be confirmed that the residual amount of the polymerizable compound of Examples 11 to 17 is remarkably small, the amount of pretilt angle change is also small, and the VHR is also high.

From the above results, it was confirmed that the polymerization rate of the polymerizable compound of the liquid crystal composition of the present invention is sufficiently fast, and it is most suitable for PSA type that has no display defects such as residual image due to changes in pretilt angle, high VHR, and excellent reliability. Or PSVA type liquid crystal display element.

no

no

Claims (20)

A liquid crystal composition containing one or two or more compounds represented by the general formula (i) as the first component, one or two or more compounds represented by the general formula (L) as the second component, and containing One or two or more compounds in the compound group represented by the formula (N-1d) and/or the general formula (N-1) are used as the third component, and the polymerizable compound represented by the general formula (II) is contained as the third component Four ingredients,

(In the formula, R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, R ⁱ² represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, and A ⁱ¹ represents 1,4-cyclohexylene (1 -CH ₂ -existing in the group or not adjacent 2 or more -CH ₂ -of can be substituted with -O-), n ⁱ¹ represents 0, 1 or 2);

(In the formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substituted, A ^L1 , A ^L2 and A ^L3 each independently represent selected from the following groups (a)~(c ), (a) 1,4-cyclohexylene (1 -CH ₂ -or 2 or more non-adjacent -CH ₂ -in the group can be substituted with -O-), (b) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted with -N=), and (c) Naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6-diyl) One -CH= in diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl or two or more non-adjacent -CH= can be substituted with -N=), the above Group (a), group (b) and group (c) can each be independently substituted by an alkyl group (one -CH ₂ -existing in the group-or two or more non-adjacent -CH ₂ - may be substituted with -O-), an alkenyl group (present in the group in which one -CH ₂ - or non-adjacent two or more -CH ₂ - may be substituted with -O-), a cyano group , Fluorine atom or chlorine atom substitution, Z ^L1 and Z ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-, n ^L1 means 0, 1, 2 or 3. When ^{there are plural A L2} , these may be the same or different. When Z ^L2 is plural, these may be the same or different, except for the compound represented by the above general formula (i));

(In the formula, R ^Nd11 and R ^Nd12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^Nd11 represents 1, 2 or 3),

(In the formula, R ^N11 and R ^N12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^N11 and n ^N12 respectively independently represent 0, 1, 2 or 3, n ^N11 +n ^N12 represents 1, 2 or 3, A ^N11 and A ^N12 each independently represent a group selected from the group consisting of the following groups (a) to (c), (a) 1,4-cyclohexylene (exist in this group One -CH ₂ -or two or more non-adjacent -CH ₂ -in the group can be substituted with -O-), (b) 1,4-phenylene (the 1 in the group One -CH= or two or more non-adjacent -CH= can be substituted with -N=), and (c) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene- 2,6-diyl or decahydronaphthalene-2,6-diyl (1 in naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl One -CH= or two or more non-adjacent -CH= can be substituted with -N=), the above group (a), group (b) and group (c) can be independently alkyl groups (1 -CH ₂ -or 2 or more non-adjacent -CH ₂ -in the group can be substituted with -O-), alkenyl (1 -CH in the group ₂ -or two or more non-adjacent -CH ₂ -may be substituted with -O-), cyano, fluorine atom or chlorine atom, Z ^N11 and Z ^N12 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-,- CH=CH-, -CF=CF- or -C≡C-, when ^{there are plural A N11} and/or A ^N12 , these may be the same or different, when Z ^N11 and/or Z ^N12 exist plural , These may be the same or different, except for the compound represented by the general formula (N-1d));

(In the formula, R ²⁰¹ and R ²¹⁰ each independently represent P ²¹ -S ²¹ -, R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , and R ²⁰⁹ each independently represent A Any one of a group, a methoxy group, a fluorine atom, or a hydrogen atom, P ²¹ each independently represents a polymerizable group selected from formula (R-1) to formula (R-7),

(In the formula, R ¹¹ , R ¹² , R ¹³ , R ¹⁴ and R ¹⁵ each independently represent any of an alkyl group having 1 to 5 carbon atoms, a fluorine atom, or a hydrogen atom, m ^r5 , m ^r7 , n ^r5 and n ^r7 each independently represent 0, 1, or 2), S ²¹ represents a single bond or an alkylene having 1 to 15 carbon atoms, and one or more of -CH ₂ -in the alkylene can be Replaced by -O-, -OCO- or -COO- in such a way that the oxygen atom is not directly adjacent, n ²¹ represents 0, 1 or 2, and A ²¹ represents selected from the group consisting of the following groups (a) to (c) the group, (a) 1,4- cyclohexylene (present in the group in which one -CH ₂ - or non-adjacent two or more -CH ₂ - may be substituted with -O-) , (B) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted with -N=), and (c) naphthalene -2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6-diyl or 1 ,2,3,4-tetrahydronaphthalene-2,6-diyl in 1 -CH= or 2 or more non-adjacent -CH= can be substituted with -N=), the above group (a ), group (b) and group (c) can be each independently covered by an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, halogen, cyano, nitro or P ^21- S ^{21 -substituted, having at least one P 21} -S ²¹ -in one molecule of the general formula (II), L ²¹ represents a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -OC ₂ H ₄ O-, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ ) _z -OCO-, -OCO-(CH ₂ ) _z -, -COO-(CH ₂ ) _z -, -CH=CH- , -CF ₂ O-, -OCF ₂ -or -C≡C- (wherein R ^a independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and in the above formula, z each independently represents 1 To 4), when ^{there are plural P 21} , S ²¹ , and A ²¹ , they may be the same or different respectively), and as the compound represented by the general formula (i), it contains one or two or more selected from Compounds in the group of compounds represented by formula (i-1.1) to formula (i-1.7),

The liquid crystal composition according to claim 1, wherein the compound represented by general formula (L) contains one or two selected from the group of compounds represented by general formulas (L-1) to (L-5) More than one compound,

(In the formula, R ^L11 , R ^L12 , R ^L21 , R ^L22 , R ^L31 , R ^L32 , R ^L41 , R ^L42 , R ^L51 and R ^{L52 are independently represented by R L1} and R ^L2 in general formula (L) The same meaning, but R ^L31 , R ^L32 and R ^L52 do not represent an alkoxy group or an alkenyloxy group). The liquid crystal composition according to claim 1, wherein the compound represented by general formula (i) contains one or two or more compounds selected from the group consisting of formula (i-0.1) to formula (i-0.7) The compounds in the group,

The liquid crystal composition according to claim 2, wherein the compound represented by general formula (i) contains one or two or more compounds selected from the group consisting of formula (i-0.1) to formula (i-0.7) The compounds in the group,

The liquid crystal composition according to claim 1, wherein the compound represented by general formula (i) contains one or two or more compounds selected from the group consisting of formula (i-2.1) to formula (i-2.7) The compounds in the group,

The liquid crystal composition according to claim 1, which contains a compound represented by general formula (N-1-3) as a compound represented by general formula (N-1),

(In the formula, R ^N131 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N132} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ). The liquid crystal composition according to claim 2, which contains a compound represented by general formula (N-1-3) as a compound represented by general formula (N-1),

(In the formula, R ^N131 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N132} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ). The liquid crystal composition according to claim 4, which contains a compound represented by general formula (N-1-3) as a compound represented by general formula (N-1),

(In the formula, R ^N131 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N132} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ). A liquid crystal composition containing one or two or more compounds represented by the general formula (i) as the first component, one or two or more compounds represented by the general formula (L) as the second component, and containing One or two or more compounds in the compound group represented by the formula (N-1d) and/or the general formula (N-1) are used as the third component, and the polymerizable compound represented by the general formula (II) is contained as the third component Four ingredients,

(In the formula, R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, R ⁱ² represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, and A ⁱ¹ represents 1,4-cyclohexylene (1 -CH ₂ -existing in the group or not adjacent 2 or more -CH ₂ -of can be substituted with -O-), n ⁱ¹ represents 0, 1 or 2);

(In the formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substituted, A ^L1 , A ^L2 and A ^L3 each independently represent selected from the following groups (a)~(c ), (a) 1,4-cyclohexylene (1 -CH ₂ -or 2 or more non-adjacent -CH ₂ -in the group can be substituted with -O-), (b) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted with -N=), and (c) Naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6-diyl) One -CH= in diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl or two or more non-adjacent -CH= can be substituted with -N=), the above Group (a), group (b) and group (c) can each be independently substituted by an alkyl group (one -CH ₂ -existing in the group-or two or more non-adjacent -CH ₂ - may be substituted with -O-), an alkenyl group (present in the group in which one -CH ₂ - or non-adjacent two or more -CH ₂ - may be substituted with -O-), a cyano group , Fluorine atom or chlorine atom substitution, Z ^L1 and Z ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-, n ^L1 means 0, 1, 2 or 3. When ^{there are plural A L2} , these may be the same or different. When Z ^L2 is plural, these may be the same or different, except for the compound represented by the above general formula (i));

(In the formula, R ^Nd11 and R ^Nd12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^Nd11 represents 1, 2 or 3),

(In the formula, R ^N11 and R ^N12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH =CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution, n ^N11 and n ^N12 respectively independently represent 0, 1, 2 or 3, n ^N11 +n ^N12 represents 1, 2 or 3, A ^N11 and A ^N12 each independently represent a group selected from the group consisting of the following groups (a) to (c), (a) 1,4-cyclohexylene (exist in this group One -CH ₂ -or two or more non-adjacent -CH ₂ -in the group can be substituted with -O-), (b) 1,4-phenylene (the 1 in the group One -CH= or two or more non-adjacent -CH= can be substituted with -N=), and (c) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene- 2,6-diyl or decahydronaphthalene-2,6-diyl (1 in naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl One -CH= or two or more non-adjacent -CH= can be substituted with -N=), the above group (a), group (b) and group (c) can be independently alkyl groups (1 -CH ₂ -or 2 or more non-adjacent -CH ₂ -in the group can be substituted with -O-), alkenyl (1 -CH in the group ₂ -or two or more non-adjacent -CH ₂ -may be substituted with -O-), cyano, fluorine atom or chlorine atom, Z ^N11 and Z ^N12 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-,- CH=CH-, -CF=CF- or -C≡C-, when ^{there are plural A N11} and/or A ^N12 , these may be the same or different, when Z ^N11 and/or Z ^N12 exist plural , These may be the same or different, except for the compound represented by the general formula (N-1d));

(In the formula, R ²⁰¹ and R ²¹⁰ each independently represent P ²¹ -S ²¹ -, R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , and R ²⁰⁹ each independently represent A Any one of a group, a methoxy group, a fluorine atom, or a hydrogen atom, P ²¹ each independently represents a polymerizable group selected from formula (R-1) to formula (R-7),

(In the formula, R ¹¹ , R ¹² , R ¹³ , R ¹⁴ and R ¹⁵ each independently represent any of an alkyl group having 1 to 5 carbon atoms, a fluorine atom, or a hydrogen atom, m ^r5 , m ^r7 , n ^r5 and n ^r7 each independently represent 0, 1, or 2), S ²¹ represents a single bond or an alkylene having 1 to 15 carbon atoms, and one or more of -CH ₂ -in the alkylene can be Replaced by -O-, -OCO- or -COO- in such a way that the oxygen atom is not directly adjacent, n ²¹ represents 0, 1 or 2, and A ²¹ represents selected from the group consisting of the following groups (a) to (c) the group, (a) 1,4- cyclohexylene (present in the group in which one -CH ₂ - or non-adjacent two or more -CH ₂ - may be substituted with -O-) , (B) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can be substituted with -N=), and (c) naphthalene -2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6-diyl or 1 ,2,3,4-tetrahydronaphthalene-2,6-diyl in 1 -CH= or 2 or more non-adjacent -CH= can be substituted with -N=), the above group (a ), group (b) and group (c) can be each independently covered by an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, halogen, cyano, nitro or P ^21- S ^{21 -substituted, having at least one P 21} -S ²¹ -in one molecule of the general formula (II), L ²¹ represents a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -OC ₂ H ₄ O-, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ ) _z -OCO-, -OCO-(CH ₂ ) _z -, -COO-(CH ₂ ) _z -, -CH=CH- , -CF ₂ O-, -OCF ₂ -or -C≡C- (wherein R ^a independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and in the above formula, z each independently represents l To 4), when ^{there are plural P 21} , S ²¹ , and A ²¹ , they may be the same or different respectively), and as the compound represented by the general formula (i), it contains one or two or more selected from Compounds in the group of compounds represented by formula (i-0.1) to formula (i-0.7),

The liquid crystal composition according to claim 9, wherein the compound represented by general formula (L) contains one or two selected from the group of compounds represented by general formulas (L-1) to (L-5) More than one compound,

(In the formula, R ^L11 , R ^L12 , R ^L21 , R ^L22 , R ^L31 , R ^L32 , R ^L41 , R ^L42 , R ^L51 and R ^{L52 are independently represented by R L1} and R ^L2 in general formula (L) The same meaning, but R ^L31 , R ^L32 and R ^L52 do not represent an alkoxy group or an alkenyloxy group). The liquid crystal composition according to claim 9, wherein the compound represented by general formula (i) contains one or two or more compounds selected from the group consisting of formula (i-2.1) to formula (i-2.7) The compounds in the group,

The liquid crystal composition according to claim 9, which contains a compound represented by general formula (N-1-3) as a compound represented by general formula (N-1),

(In the formula, R ^N131 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N132} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ). The liquid crystal composition according to claim 10, which contains a compound represented by general formula (N-1-3) as a compound represented by general formula (N-1),

(In the formula, R ^N131 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 ^{carbon atoms, and R N132} represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. ). The liquid crystal composition according to any one of claims 1 to 13, wherein the compound represented by general formula (II) contains one or two or more selected from general formula (IV-11) to general formula (IV) -19) Compounds in the group of compounds shown,

(In the formula, R ⁷ and R ⁸ each independently represent any one of formula (R-1) to formula (R-7), and the hydrogen atom in the 1,4-phenylene group may be further replaced by -F,- CF ₃ , -CH ₃ or any one of formula (R-1) to formula (R-7) is substituted). The liquid crystal composition according to claim 14, which further contains one or two or more compounds selected from the group of compounds represented by formula (Q-1) to formula (Q-4),

(In the formula, R ^Q1 each independently represents an alkyl group having 1 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, or an alkylene group having 2 to 30 carbon atoms. The group, one -CH ₂ -existing in the group or two or more non-adjacent -CH ₂ -can be independently substituted by -O-, -COO-, -OCO- or -S-, and, One or two or more hydrogen atoms present in the group may be independently substituted by fluorine atoms or chlorine atoms, and M ^Q1 represents an alkylene group with 1 to 15 carbon atoms, -OCH ₂ -, -CH ₂ O- , -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH- , -OCO-CH=CH-, -CH=CH-, -C≡C-, single bond, 1,4-phenylene which can be substituted by fluorine atom, or trans-1,4-cyclohexylene, the _{One or more -CH 2} -in the alkylene group can also be substituted by -O-, -CO-, -COO-, -OCO- in a way that oxygen atoms are not directly adjacent to each other, formula (Q-1 ) To (Q-4), one or more than two non-adjacent 1,4-phenylene groups -CH= can also be substituted by -N=, the hydrogen in 1,4-phenylene group Atoms may be independently substituted by fluorine atoms or chlorine atoms. In formulas (Q-1) to (Q-4), one of 1,4-cyclohexylene or two or more non-adjacent -CH _2- may be substituted by -O- or -S-, and the hydrogen atoms in 1,4-cyclohexylene may be substituted by fluorine atoms or chlorine atoms each independently). A liquid crystal display element including two substrates, and a liquid crystal phase containing the liquid crystal composition according to claim 14 provided between the two substrates. The liquid crystal display element according to claim 16, which is used to drive an active matrix. The liquid crystal display element according to claim 16, which is a PSA type or a PSVA type. The liquid crystal display element according to claim 16, wherein at least one of the two substrates does not have an alignment film. A liquid crystal display element comprising: two substrates, and a liquid crystal phase containing the liquid crystal composition according to claim 15 provided between the two substrates.