JP7388123B2 - Liquid crystal composition for a light-scattering liquid crystal element, and a light-scattering liquid crystal element using the liquid crystal composition for a light-scattering liquid crystal element - Google Patents

Description

The present invention relates to a liquid crystal composition for a light-scattering liquid crystal element, and a light-scattering liquid crystal element using the same. Light-scattering liquid crystal elements are used in items such as light shutters used for dimming of digital cameras and smartphones, light-scattering plates for display light sources, light guide plates, reflectors for reflective displays and transparent displays, and smart windows. include.

In recent years, with the diversification of display applications and improvements in performance, there are expectations for the realization of transparent displays, liquid crystal displays with high contrast ratios, and light control elements with a light shutter function that can control light to a desired degree of transmission and scattering. Therefore, the development of light control materials to achieve these goals has become an important issue.

Among the light control materials, light scattering type liquid crystal display elements using polymer network type liquid crystal are used as transmission-scattering type light control element materials. It is a liquid crystal element type in which a network is formed. Light-scattering liquid crystal display elements do not require optical films such as polarizing plates because they use a display method that utilizes the contrast ratio between a transparent state and a cloudy state. Therefore, compared to TN, STN, IPS, or VA mode liquid crystal display elements that use polarizing plates, this has the advantage of realizing a brighter display.Moreover, the element structure is simple, so optical shutters such as light control glass can be used. It is applied to segment display applications such as watches, etc. Furthermore, in order to achieve high-definition display, applications are being considered for projector applications, reflective display applications, etc. in combination with active drive display elements.

In recent years, liquid crystal display devices with unconventional designs, such as transmissive displays and flexible displays, are being developed for practical use. As a liquid crystal element that is expected to be applied to these applications, for example, as described in Patent Document 1 and Patent Document 2, a so-called reverse mode type light scattering device that becomes a transparent state when no voltage is applied and a scattering state when a voltage is applied is used. type liquid crystal elements. These reverse mode type light scattering type liquid crystal display elements are so-called normal mode light scattering type liquid crystal display elements, that is, they use a liquid crystal material with positive dielectric anisotropy, and the scattering state is changed when no voltage is applied, and the scattering state is changed when no voltage is applied. It has the advantage of superior transparency in the transparent state compared to conventional light-scattering liquid crystal elements that sometimes become transparent.

However, in order to design a reverse mode type light-scattering liquid crystal device, it is necessary to align the liquid crystal molecules in the device and the mesogenic groups in the polymer network to a high order in approximately the same direction when no voltage is applied. . If this orientation is not sufficient when no voltage is applied, local light scattering is likely to occur at the interface between the liquid crystal composition and the polymer network or between domains of the liquid crystal, so that cloudiness tends to remain when the liquid crystal element is in a transparent state. For applications that require high transparency, such as next-generation displays, it is required to suppress such clouding to a high level.

On the other hand, since the liquid crystal molecules in the device receive strong anchoring forces due to their alignment with the mesogen groups in the polymer network, it is more difficult to drive the liquid crystal molecules than in normal liquid crystal devices, making it difficult to obtain a practical driving voltage. there were. In addition, when applied to high-definition displays that display halftones, the difference between the transmittance locus when the voltage increases and the transmittance locus when the voltage drops, so-called hysteresis, becomes a problem. was required.

JP 5-119302 Patent No. 5017963

Therefore, the problem to be solved by the present invention is to provide a reverse mode type light-scattering liquid crystal element with excellent transparency when no voltage is applied, and to reduce driving voltage and hysteresis.

As a result of intensive studies to solve the above problems, the present invention discovered that it is important to use a specific polymerizable compound in a liquid crystal composition for a reverse mode type light scattering liquid crystal element. The invention was completed.

That is, the present invention contains a polymerizable compound selected from the group of compounds represented by the following general formula (1) as a first component, a non-polymerizable compound as a second component, and a non-polymerizable compound as a second component. The present invention relates to a liquid crystal composition for a light-scattering liquid crystal element, which contains a photopolymerization initiator as a third component.

(In the formula, P ¹¹ and P ¹² each independently represent a polymerizable group,
S ¹¹ and S ¹² each independently represent a spacer group,
X ¹¹ and X ¹² are each independently -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO-, -CO-S-, -S- CO-, -O-CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O-, -OCF ₂ -, -CF ₂ S- , -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-R ^X1 -, -OCO-R ^X1 -, -R ^X1 -COO-, -R ^X1 -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH ₂ -, -N=N-, -CH=N-N=CH-, -CF=CF-, -C≡C- or a single bond (however, ^-R represents an alkylene group of ~6), (however, each P-(S-X)- bond does not include -O-O-),
Z ¹¹ is -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO-, -CO-S-, -S-CO-, -O-CO -O-, -CO-NH-, -NH-CO-, -SCH _{2 -, -CH 2 S-} , -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, - CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-R ^Z1 -, -OCO-R ^Z1 -, -R ^Z1 -COO -, -R ^Z1 -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH ₂ -, -N=N-, -CH=N-N=CH-, -CF=CF-, or -C≡C- (However, -R ^Z1 - represents an alkylene group having 2 to 6 carbon atoms.) A ¹¹ and A ¹² each independently represent a group selected from a divalent aromatic ring, an alicyclic ring, a heterocycle, and a fused ring. )
The present invention further relates to a light-scattering liquid crystal element formed by forming a polymer network by polymerizing the polymerizable compound of the light-scattering liquid crystal composition.

According to the present invention, a reverse mode type light scattering liquid crystal element has excellent transparency when no voltage is applied, and can reduce driving voltage and hysteresis.

As described above, the liquid crystal composition for a light-scattering liquid crystal element of the present invention comprises a first component, which is a polymerizable compound, a second component, which is a non-polymerizable compound, and a third component, which is a photopolymerizable compound. It contains an initiator as an essential component.

(First component: polymerizable compound)
The liquid crystal composition for a light-scattering liquid crystal element according to the present invention first contains a polymerizable compound selected from the group of compounds represented by the following general formula (1) as a first component.

(In the formula, P ¹¹ and P ¹² each independently represent a polymerizable group,
S ¹¹ and S ¹² each independently represent a spacer group,
X ¹¹ and X ¹² are each independently -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO-, -CO-S-, -S- CO-, -O-CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O-, -OCF ₂ -, -CF ₂ S- , -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-R ^X1 -, -OCO-R ^X1 -, -R ^X1 -COO-, -R ^X1 -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH ₂ -, -N=N-, -CH=N-N=CH-, -CF=CF-, -C≡C- or a single bond (however, ^-R ~6 alkylene group) (However, each P-(S-X)- bond does not include -O-O-.)
Z ¹¹ is -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO-, -CO-S-, -S-CO-, -O-CO -O-, -CO-NH-, -NH-CO-, -SCH _{2 -, -CH 2 S-} , -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, - CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-R ^Z1 -, -OCO-R ^Z1 -, -R ^Z1 -COO -, -R ^Z1 -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH ₂ -, -N=N-, -CH=N-N=CH-, -CF=CF-, or -C≡C- (However, -R ^Z1 - represents an alkylene group having 2 to 6 carbon atoms.) represents,
A ¹¹ and A ¹² each independently represent a group selected from a divalent aromatic ring, an alicyclic ring, a heterocycle, and a fused ring. )
Here, in the general formula (1), the polymerizable groups represented by P ¹¹ and P ¹² are represented by the following formulas (P-1) to (P-20).

Among these polymerizable groups, from the viewpoint of improving polymerizability and storage stability, formula (P-1), formula (P-2), formula (P-7), formula (P-12), Or formula (P-13) is preferable, formula (P-1), formula (P-2), and formula (P-7) are more preferable, and especially formula (P-1) and formula (P-2) are preferable. preferable.

In the general formula (1), S ¹¹ and S ¹² each independently represent a single bond or a spacer group. Preferably it is an alkylene group. Here, the alkylene group is preferably a linear alkylene group or a branched alkylene group, and the hydrogen atom in the alkylene group is one or more halogen atoms, a CN group, or the above-mentioned polymerizable group. may be substituted with an alkyl group having 1 to 8 carbon atoms. One CH ₂ group or two or more non-adjacent CH ₂ groups present in the alkylene group each independently form -O-, -S-, with oxygen atoms not directly bonding to each other. , -NH-, -N(CH ₃ )-, -CO-, -CH(OH)-, CH(COOH), -COO-, -OCO-, -OCOO-, -SCO-, -COS- or - It may be replaced by C≡C-.

Among these spacer groups, from the viewpoint of exhibiting liquid crystal properties, linear alkylene groups having 2 to 8 carbon atoms, alkylene groups having 2 to 6 carbon atoms substituted with fluorine atoms, and some alkylene groups are Alkylene groups having 4 to 14 carbon atoms substituted with -O- are preferred.

In the general formula (1), the groups represented by X ¹¹ and X ¹² each independently represent -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, as described above. , -COO-, -OCO-, -CO-S-, -S-CO-, -O-CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CH ₂ S -, -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO -CH=CH-, -COO-R ^X1 -, -OCO-R ^{X1 -, -R X1 -COO-} , -R ^X1 -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH ₂ -, -N=N-, -CH=N-N=CH-, -CF=CF-, -C≡ C- or a single bond (-R ^X1 - represents an alkylene group having 2 to 6 carbon atoms), especially a single bond, -O-, -S-, -CO-, -COO A group selected from the group consisting of -, and -OCO- is preferred, and -O- is more preferred.

However, in the general formula (1), each P-(S-X)- bond of P ¹¹ -(S ¹¹ -X ¹¹ )- and P ¹² -(S ¹² -X ¹² )- has -O-O -Does not include bonds.

In the general formula (1), the group represented by Z ¹¹ is, as described above, -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO -, -CO-S-, -S-CO-, -O-CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O- , -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, - COO-R ^Z1 -, -OCO-R ^Z1 -, -R ^Z1 -COO-, -R ^Z1 -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH ₂ -, -N=N-, -CH=N-N=CH-, -CF=CF-, or -C≡C- (however, - R ^Z1 - represents an alkylene group having 2 to 6 carbon atoms), especially -COO-, -CF ₂ O-, -CH=CH-, -CH ₂ CH ₂ -, or -C A group selected from the group consisting of ≡C- is preferred, and -COO- is more preferred.

In the general formula (1), A ¹¹ and A ¹² each independently represent a group selected from a divalent aromatic ring, an alicyclic ring, a heterocycle, and a condensed ring, and specifically, the following (a) to Groups selected from (c) are preferred.
(a) trans-1,4-cyclohexylene group (one methylene group or two or more non-adjacent methylene groups present in this group may be replaced by -O- or -S-); )
(b) 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be replaced with a nitrogen atom)
(c) 1,4-cyclohexenylene group, 1,4-bicyclo(2.2.2)octylene group, 1,4-piperidine group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6 -diyl group and 1,2,3,4-tetrahydronaphthalene-2,6- group (one or more present in the above groups (a), (b) and (c)) Each hydrogen atom is independently a fluorine atom, a chlorine atom, an alkyl group having 1 to 8 carbon atoms, a halogenated alkyl group having 1 to 8 carbon atoms, a halogenated alkoxy group having 1 to 8 carbon atoms, or a carbon atom. It may be substituted with an alkoxy group having 1 to 8 atoms.)
Among these, group (a) and group (b) are preferable from the viewpoint of easily exhibiting liquid crystallinity, and it is particularly preferable to have group (b) as an essential structure.

Since the polymerizable compound used in the present invention has a two-ring structure and a bonding group between the two rings, it exhibits weak liquid crystallinity and also has flexibility. A reverse mode type light-scattering liquid crystal element has a transparent state when no voltage is applied, consisting of a polymerizable composition containing a polymerizable compound represented by general formula (1) before polymerization and a non-polymerizable liquid crystal composition described below. This is achieved by uniformly compatibility with the materials, forming one nematic layer, uniformly oriented, and maintaining that oriented state even if the polymerizable composition undergoes phase separation due to polymerization. Therefore, the polymerizable composition requires a compound exhibiting liquid crystallinity. However, if a polymerizable liquid crystal compound with high liquid crystallinity, such as a compound with a large number of ring structures, is used, the elastic energy with the non-polymerizable liquid crystal increases, making it difficult for the non-polymerizable liquid crystal to move, resulting in an increase in driving voltage. On the other hand, when the polymerizable compound of the present invention having a two-ring structure is used, since the liquid crystallinity is low, the interaction with non-polymerizable liquid crystal becomes small, and the driving voltage can be reduced. Further, hysteresis is caused by the shifting movement of the liquid crystal at the interface of the polymer network where the polymerizable composition is polymerized, and is more likely to occur when a polymerizable liquid crystal with a rigid skeleton is used. Therefore, by providing a bonding group in the ring structure and increasing the flexibility of the polymer network, the polymer network can easily follow the movement of the non-polymerizable liquid crystal, and hysteresis can be reduced.

More specifically, the compound represented by the general formula (1) can be exemplified by compounds represented by the following formulas (1-1) to (1-5).

Among the compounds represented by general formulas (1-1) to (1-5) above, compounds represented by general formulas (1-1) and (1-2) are preferred.
In addition, the polymerizable compound represented by the general formula (1) detailed above may be used alone as the first component, or two or more types may be used in combination.
(Fourth component polymerizable compound)
In the present invention, in addition to the first component, a fourth component can be used as a polymerizable component depending on the desired performance.

Specifically, in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention, a polymerizable compound represented by the following general formula (3-1) is used as the fourth component. This is preferable because it can further reduce hysteresis.

In the formula, P ³¹ represents a polymerizable functional group, and specifically has the same meaning as P ¹¹ and P ¹² . Preferred groups for P ³¹ are the same as for P ¹¹ and P ¹² .

R ³¹ represents a single bond or an alkylene group having 1 to 9 carbon atoms, and one or more -CH ₂ - in the alkylene group are each independently - so that oxygen atoms are not directly adjacent to each other. It may be substituted with O-, -CO-, -COO- or -OCO-, and one or more hydrogen atoms present in the alkylene group are each independently substituted with a fluorine atom. You can.

R ³¹ is preferably an alkylene group having 1 to 6 carbon atoms, more preferably an alkylene group having 1 to 3 carbon atoms.

In general formula (3-1), R ³² and R ³³ each independently represent a hydrogen atom or an alkyl group having 1 to 21 carbon atoms; -CH ₂ - may be substituted with -O-, -CO-, -COO- or -OCO-, and one or more hydrogen atoms present in the alkyl group are each independently Optionally substituted with ^R34 . In R ³² and R ³³ , one or more non-adjacent -CH ₂ - may be substituted with -O-, -CO-, -COO- or -OCO-, and one or more It is more preferable that each hydrogen atom represents an alkyl group having 3 to 16 carbon atoms which may be independently substituted with R ³⁴ , and one or more hydrogen atoms are each independently substituted with R ³⁴ It is more preferable to represent an alkyl group having 5 to 14 carbon atoms, which may be optionally substituted, and an alkyl group having 6 to 12 carbon atoms is particularly preferable from the viewpoint of suppressing crystallinity. Here, R ³⁴ represents an alkyl group having 1 to 6 carbon atoms.

In general formula (3-1), the total number of carbon atoms contained in each of R ³¹ , R ³² and R ³³ is preferably from 3 to 30, more preferably from 4 to 28, and more preferably from 5 to 26. It is more preferably 6 to 24, even more preferably 12 to 24. It is preferable that either one of R ³² and R ³³ does not represent a hydrogen atom, and it is more preferable that both R ³² and R ³³ do not represent a hydrogen atom.

Examples of the compound represented by the general formula (3-1) include ethyl (meth)acrylate, 2-ethylhexyl acrylate, propyl (meth)acrylate, butyl (meth)acrylate, isobutyl (meth)acrylate, and octyl (meth)acrylate. , dodecyl (meth)acrylate, stearyl (meth)acrylate, etc., mono(meth)acrylates having a linear alkyl chain, or mono(meth)acrylates having a branched alkyl chain represented by the following structure. It will be done.

Among these, it is particularly preferable to use mono(meth)acrylates having a branched alkyl chain because they have a remarkable effect of reducing the driving voltage while maintaining good transparency when no voltage is applied.

Moreover, in the present invention, the following polymerizable compound represented by the general formula (3-1) is used as the fourth component, instead of the polymerizable compound represented by the general formula (3-1), or together with the polymerizable compound represented by the general formula (3-1). It is also preferable to use a polymerizable compound represented by general formula (3-2).

(In the formula, Y ³¹ and Y ³² represent a hydrogen atom or a methyl group,
X ³¹ represents a linear or branched alkylene having 4 to 80 carbon atoms, and any carbon atom of the alkylene is -O-, -CH=CH-, -CO so that no oxygen atom is directly adjacent to it. It may be substituted with -, -C≡C-, -OCO-, -COO-, or OH. )
Here, in the general formula (3-2), X ³¹ is a straight chain or branched alkylene having a carbon number of 6 to 80, but the number of carbon atoms must be in a range of 7 to 70. is preferably in the range of 8 to 60, and particularly preferably in the range of 9 to 50 from the viewpoint of reducing drive voltage.

Examples of the polymerizable compound represented by the above general formula (3-2) include those having the following structure.

(In the formula, n and m are values such that n + m is 1 to 10, n ² is 1 to 18, n ³ and m ² are values such that n ³ + m ² is 1 to 18, n ⁴ is 1 to 23, and n ⁵ is 1 ~23, n ⁶ represents 4 to 30, n ⁷ represents 2 to 10, and n ⁸ represents 2 to 10.)
(Fifth component: polymerizable compound)
Furthermore, from the viewpoint of adjusting driving voltage, hysteresis, and improving low-temperature characteristics, general formula (4) can also be used as the fifth component (however, in the compound represented by general formula (4), the general formula (excluding compounds represented by (1)).

In the formula, P ⁴¹ represents a polymerizable group, and specifically has the same meaning as P ¹¹ and P ¹² . Preferred groups for P ⁴¹ are the same as for P ¹¹ and P ¹² .
S ⁴¹ represents a single bond or a spacer group, and is preferably an alkylene group having 1 to 18 carbon atoms because it particularly tends to exhibit liquid crystallinity and from the viewpoint of reducing driving voltage. Here, the alkylene group is preferably a linear alkylene group or a branched alkylene group, and the hydrogen atom in the alkylene group is one or more halogen atoms, a CN group, or the above-mentioned polymerizable group. may be substituted with an alkyl group having 1 to 8 carbon atoms. One CH ₂ group or two or more non-adjacent CH ₂ groups present in the alkylene group each independently form -O-, -S-, with oxygen atoms not directly bonding to each other. , -NH-, -N(CH ₃ )-, -CO-, -CH(OH)-, CH(COOH), -COO-, -OCO-, -OCOO-, -SCO-, -COS- or - It may be replaced by C≡C-.

Among these spacer groups, from the viewpoint of exhibiting liquid crystal properties, linear alkylene groups having 2 to 8 carbon atoms, alkylene groups having 2 to 6 carbon atoms substituted with fluorine atoms, and some alkylene groups are Alkylene groups having 4 to 14 carbon atoms substituted with -O- are preferred.
R ⁴² represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a cyano group, an alkyl group having 1 to 20 carbon atoms, or P ⁴² -S ⁴² -, and the alkyl group is a straight chain Any hydrogen atom in the alkyl group may be substituted with a fluorine atom, and one -CH ₂ - in the alkyl group or two non-adjacent hydrogen atoms may be substituted with a fluorine atom. -CH ₂ - each independently represents -O-, -S-, -CO-, -COO-, -OCO-, -CO-S-, -S-CO-, -O-CO-O -, -CO-NH-, -NH-CO- or -C≡C-, P ⁴² represents a polymerizable group, and S ⁴² represents a spacer group. , among these, an alkyl group having 1 to 10 carbon atoms (one or more -CH ₂ - groups in the alkyl group may be replaced with an oxygen atom), or P ⁴² -S ⁴² -(P ⁴² has the same meaning as P ¹¹ or P ¹² , and S ⁴² has the same meaning as S ⁴¹ ), and even more preferably P ⁴² -S ⁴² -.
When the bond to S ⁴¹ or R ⁴² is expressed as _the leftmost bond ^, X ⁴¹ and -, -OCO-, -CO-S-, -S-CO-, -O-CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CF ₂ O-, - OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO- CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -COO-CH ₂ -, -OCO-CH ₂ -, -CH=CH-, -N=N-, -CH=N-N=CH- , -CF=CF-, -C≡C- or a single bond (however, each P-(S-X)- bond does not include -O-O-), among which X ⁴¹ represents -O- It is preferable that X ⁴² is a single bond, -O-CO-O-, or -O-.

However, in the general formula (4), each P-(S-X)- bond of P ⁴¹ -(S ⁴¹ -X ⁴¹ )- and P ⁴² -(S ⁴² -X ⁴² )- has -O-O -Does not include bonds.
Z ⁴¹ is -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO-, -CO-S-, -S-CO-, -O- CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-R ^Z41 -, -OCO-R ^Z41 -, -R ^Z41 - COO-, -R ^Z41 -OCO-, -COO-CH 2 -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH _{2 -} , -N=N-, -CH=N-N=CH-, -CF=CF-, -C≡C- or a single bond ((However, -R ^Z41 - represents a carbon atom having 2 to 6 carbon atoms. -COO-, -OCO-, -CH ₂ -CH 2 -COO-, -CH ₂ -CH ₂ -OCO-, -COO-CH _{2 -CH 2} -, -OCO-CH ₂ -CH ₂ -, -C≡C-, or a single bond is preferable, and when multiple Z ^41s exist, they may be the same or different,
A ⁴¹ and A ⁴² each independently represent the same meaning as A ¹¹ and A ¹² in general formula (1).

Specifically, the polymerizable compound represented by the general formula (4) is preferably a polymerizable compound represented by the following formulas (4-1) to (4-39).

In the above formulas (4-1) to (4-39), n and m each independently represent an integer from 1 to 10, and R ¹ , R ² and R ³ each independently represent hydrogen. Atom, halogen atom, alkyl group having 1 to 6 carbon atoms, alkoxy group having 1 to 6 carbon atoms, and cyano group. When these groups are alkyl groups having 1 to 6 carbon atoms or alkoxy groups having 1 to 6 carbon atoms, they may be entirely unsubstituted or substituted with one or more halogen atoms. .
Further, the following compounds (4-40) to (4-94) are also preferred.

上記式（４－４０）～式（４－９４）において、ｎ、ｍは、各々独立して１～１０の整数数を表し、Ｒは、各々独立して水素原子、ハロゲン原子、炭素数１～６のアルキル基、炭素数１～６のアルコキシ基、シアノ基を示す。これらの基が炭素数１～６のアルキル基、あるいは炭素数１～６のアルコキシ基の場合、全部が未置換であるか、あるいは１つまたは２つ以上のハロゲン原子により置換されていてもよい。

In the above formulas (4-40) to (4-94), n and m each independently represent an integer number of 1 to 10, and R each independently represents a hydrogen atom, a halogen atom, a carbon number 1 Indicates an alkyl group having ~6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, and a cyano group. When these groups are alkyl groups having 1 to 6 carbon atoms or alkoxy groups having 1 to 6 carbon atoms, they may be entirely unsubstituted or substituted with one or more halogen atoms. .

The total of the first component, fourth component, and fifth component is preferably 2 to 20% by mass, from the viewpoint of maintaining the strength of the polymer network and realizing a low driving voltage, and 2. It is more preferably .5 to 15% by weight, and even more preferably 3 to 10% by weight. Further, in order to bring the non-polymerizable compound of the second component (described later) into a uniformly oriented state, the total amount of the first component and the fifth component is preferably 0.5 to 10% by mass, and 1 to 1% by mass. More preferably, it is 5% by mass.
Further, the combined use of the first component and the fourth component is effective for further lowering the voltage and lowering the hysteresis. The first component can weaken the interaction with a non-polymerizable liquid crystal composition containing a non-polymerizable compound, which is the second component described below, but the addition of the fourth component, which is a non-liquid crystal compound, , this interaction can be further reduced. Furthermore, among the fourth components, if a compound represented by the general formula (3-1), that is, a monofunctional compound that lowers the crosslink density and has a flexible side chain, Flexibility can be further increased, and not only lower voltage but also lower hysteresis can be achieved.

The liquid crystal composition for a light-scattering type liquid crystal element according to the present invention includes, in addition to the compounds of the first component, fourth component, and fifth component, groups that improve adhesion to the substrate, such as hydroxyl. Other polymerizable compounds, such as polymerizable compounds having polar groups such as a group, a thiol group, an amide group, an amino group, or a phosphoric acid group, may also be used in combination.
(Second component: non-polymerizable compound)
The liquid crystal composition for a light-scattering liquid crystal element according to the present invention contains a non-polymerizable compound as a second component. More specifically, the liquid crystal composition for a light-scattering liquid crystal element according to the present invention preferably contains one or more compounds represented by the following general formula (2).

(In the formula, R ²¹ represents an alkyl group having 1 to 8 carbon atoms, and one or more non-adjacent -CH ₂ - in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,
R ²² represents a fluorine atom, a chlorine atom, a cyano group, a CF ₃ group, an OCF ₃ group, an OCHF ₂ group, an NCS group, or an alkyl group having 1 to 8 carbon atoms; Two or more adjacent -CH ₂ - may each be independently substituted with -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
A ²¹ , A ²² and A ²³ each independently represent (a) a 1,4-cyclohexylene group (one -CH ₂ - present in this group or two or more non-adjacent -CH ₂ - may be replaced with -O-) and (b) 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be replaced with -N = may be replaced.)
(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with -N=. )
(d) represents a group selected from the group consisting of 1,4-cyclohexenylene group, and the above group (a), group (b), group (c) and group (d) each independently represent a cyano group, May be substituted with a fluorine atom or a chlorine atom,
Z ²¹ and Z ²² are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
n ²¹ represents an integer from 0 to 3, and when a plurality of A ²¹ or Z ²¹ exist, they may be the same or different. )
The compound represented by the general formula (2) preferably includes compounds represented by the following general formulas (N-1), (N-2) and (N-3). Among general formulas (2), those containing a compound represented by general formula (N-1) are preferable if scattering performance during voltage application is desired to be enhanced. Note that, unless otherwise specified, the term "composition" simply refers to a liquid crystal composition.

In addition to one or more liquid crystal compounds represented by general formula (N-1), one or two liquid crystal compounds represented by general formula (N-2) or general formula (N-3) may be added. More than one type may be contained. These liquid crystal compounds correspond to dielectrically negative compounds (the sign of the dielectric anisotropy is negative and its absolute value is greater than 2).

(In the formula, R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two non-adjacent Each of -CH ₂ - or more may be independently substituted with -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 each independently represent (a) a 1,4-cyclohexylene group (one -CH ₂ - present in this group or an adjacent (2 or more -CH ₂ - present in this group may be replaced by -O-) and (b) a 1,4-phenylene group (one -CH= or non-adjacent 2 -CH= may be replaced with -N=.)
(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with -N=. )
(d) represents a group selected from the group consisting of 1,4-cyclohexenylene group, and the above group (a), group (b), group (c) and group (d) each independently represent a cyano group, May be substituted with a fluorine atom or a chlorine atom,
Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31 and Z ^N32 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O- , -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
X ^N21 represents a hydrogen atom or a fluorine atom,
T ^N31 represents -CH ₂ - or an oxygen atom,
n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 and n ^N32 each independently represent an integer from 0 to 3, but n ^N11 +n ^N12 , n ^N21 +n ^N22 and n ^N31 +n ^N32 each independently represent 1, 2 or 3, and when there are a plurality of A ^N11 to A ^N32 and Z ^N11 to Z ^N32 , they may be the same or different. However, the compound represented by general formula (i) is excluded. )
The compounds represented by the general formulas (N-1), (N-2) and (N-3) are preferably compounds with negative dielectric anisotropy and an absolute value greater than 2.

In general formulas (N-1), (N-2) and (N-3), R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently have a carbon atom number of 1 to 8 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 are preferred; 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 is preferable, and an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms is preferable. More preferred are alkyl groups having 2 to 5 carbon atoms or alkenyl groups having 2 to 3 carbon atoms, and particularly preferred are alkenyl groups having 3 carbon atoms (propenyl group).

In addition, when the ring structure to which it is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a carbon An alkenyl group having 4 to 5 atoms is preferable, and when the ring structure to which it is bonded is a saturated ring structure such as cyclohexane, pyran, and dioxane, a straight chain alkyl group having 1 to 5 carbon atoms, a straight chain A straight-chain alkoxy group having 1 to 4 carbon atoms and a straight-chain alkenyl group having 2 to 5 carbon atoms are preferred. In order to stabilize the nematic phase, the total number of carbon atoms and, if present, oxygen atoms is preferably 5 or less, and linearity is preferred.

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

A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 are preferably aromatic when it is required to independently increase Δn, and in order to improve the response speed, they are preferably aromatic. Trans-1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5 -difluoro-1,4-phenylene group, 2,3-difluoro-1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo[2.2.2]octylene group, piperidine-1 ,4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, and the following It is more preferable to represent the structure of

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

Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31 and Z ^N32 are each independently -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ - or a single bond is preferably represented, -CH ₂ O-, -CH ₂ CH ₂ - or a single bond is more preferred, and -CH ₂ O- or a single bond is particularly preferred. X ^N21 is preferably a fluorine atom. T ^N31 is preferably an oxygen atom.

n ^N11 +n ^N12 , n ^N21 +n ^N22 and n ^N31 +n ^N32 are preferably 1 or 2, n a combination where ^N11 is 1 and n ^N12 is 0, n a combination where ^N11 is 2 and n ^N12 is 0, n A combination where ^N11 is 1 and n ^N12 is 1, n A combination where ^N11 is 2 and n ^N12 is 1, n A combination where ^N21 is 1 and n ^N22 is 0, n ^N21 is 2 and n ^N22 is Preferable combinations are 0, ^nN31 is 1 and ^nN32 is 0, and ^nN31 is 2 and ^nN32 is 0.

The lower limit of the preferable content of the liquid crystal compound represented by formula (N-1) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 30% by mass. and the upper limit is 95% by mass. The lower limit of the more preferable content is 45%, and the upper limit is 80% by mass.

The preferred content of the liquid crystal compound represented by formula (N-2) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass. . However, the lower limit of the content may be 1% by mass, 10% by mass, or 20% by mass, as long as the object of the present invention, such as transparency, is not impaired. The upper limit of the content may be 35% by mass, 25% by mass, or 20% by mass.

The preferred content of the liquid crystal compound represented by formula (N-3) is 0% by mass with respect to the total amount of the non-polymerizable liquid crystal compound contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention. It is. However, the lower limit of the content may be 1%, 10% by mass, or 20% by mass, as long as the object of the present invention, such as transparency, is not impaired. The upper limit of the content may be 35% by mass, 25% by mass, or 20% by mass.

When the liquid crystal composition for a light-scattering type liquid crystal element according to the present invention needs to have a low viscosity and a fast response speed, it is preferable that the lower limit value is low and the upper limit value is low. Further, when it is necessary to maintain a high _TNI of the liquid crystal composition for a light-scattering liquid crystal element according to the present invention and to obtain a composition with good temperature stability, it is preferable that the lower limit value is low and the upper limit value is low. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value is higher and the upper limit value is higher.

Examples of the compound represented by the general formula (N-1) include a group of compounds represented by the following general formulas (N-1a) to (N-1g).

(In the formula, R ^N11 and R ^N12 represent the same meanings as R ^N11 and R ^N12 in general formula (N-1), n ^Na11 represents 0 or 1, n ^Nb11 represents 1 or 2, and n ^Nc11 represents n ^Nd11 represents 1 or 2, n ^Ne11 represents 1 or 2, n ^Nf11 represents 1 or 2, n ^Ng11 represents 1 or 2, A ^Ne11 represents trans-1,4 -represents a cyclohexylene group or 1,4-phenylene group, and A ^Ng11 represents at least one trans-1,4-cyclohexylene group, 1,4-cyclohexenylene group, or 1,4-phenylene group; represents a 1,4-cyclohexenylene group, Z ^{Ne 11} represents a single bond or ethylene, and at least one represents ethylene.)
More specifically, the compounds represented by general formula (N-1) are represented by general formulas (N-1-1) to (N-1-5), (N-1-10) to (N-1- 18), (N-1-20) to (N-1-21) are preferred.

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

(In the formula, R ^N111 and R ^N112 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and 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 preferably an ethoxy group or a butoxy group.

The compound represented by the general formula (N-1-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-1) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0%, and the upper limit is 25%. The lower limit of the more preferable content is 0%, and the upper limit is 15%.

Furthermore, the compound represented by general formula (N-1-1) is a compound selected from the group of compounds represented by formula (N-1-1.1) to formula (N-1-1.23). Preferably, compounds represented by formulas (N-1-1.1) to (N-1-1.4) are preferably compounds represented by formulas (N-1-1.1) and (N-1-1.1). -1-1.3) Compounds represented by -1-1.3) are preferred.

The compounds represented by formulas (N-1-1.1) to (N-1-1.22) can be used alone or in combination.

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

(In the formula, R ^N121 and R ^N122 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
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 group, propyl group, butyl group 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, and a methyl group, propyl group, methoxy group, ethoxy group or propoxy group is preferable. preferable.

The compound represented by the general formula (N-1-2) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-2) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 30% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 20% by mass.

Furthermore, the compound represented by general formula (N-1-2) is a compound selected from the group of compounds represented by formula (N-1-2.1) to formula (N-1-2.22). Preferably, from formula (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-1-2.20) are preferable, and when emphasis is placed on improving Δε, formula (N-1-2.3) is preferable. A compound represented by the formula (N-1-2.7) is preferable, and when emphasis is placed on improving _TNI , the compound represented by the formula (N-1-2.10) or the formula (N-1-2.11) is preferable. It is preferably a compound represented by formula (N-1-2.13), and when emphasis is placed on improving response speed, it is a compound represented by formula (N-1-2.20). is preferred.

The compounds represented by formulas (N-1-2.1) to (N-1-2.22) can be used alone or in combination.

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

(In the formula, R ^N131 and R ^N132 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N131 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 group, a propyl group, or a butyl group. 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, and preferably a 1-propenyl group, ethoxy group, propoxy group or butoxy group. .

The compound represented by the general formula (N-1-3) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-3) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 5% by mass, and the upper limit is 50% by mass. The lower limit of the more preferable content is 10% by mass, and the upper limit is 35% by mass.

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

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) are used alone Although it is possible to use the formula (N-1-3.1) and the formula (N-1-3.2) in combination, the formula (N-1-3.3 ), a combination of two or three selected from formula (N-1-3.4) and formula (N-1-3.6) is preferred.

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

(In the formula, R ^N141 and R ^N142 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
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, such as a methyl group, a propyl group, or an ethoxy group. or butoxy groups are preferred.

The compound represented by the general formula (N-1-4) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-4) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

Furthermore, the compound represented by general formula (N-1-4) is a compound selected from the group of compounds represented by formula (N-1-4.1) to formula (N-1-4.14). Preferably, it is a compound represented by formula (N-1-4.1) to (N-1-4.4). -1-4.2) and compounds represented by formula (N-1-4.4) are preferred.

The compounds represented by formulas (N-1-4.1) to (N-1-4.14) can be used alone or in combination.

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

(In the formula, R ^N151 and R ^N152 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N151 and R ^N152 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, an ethyl group, a propyl group, or a butyl group. is preferred.

The compound represented by the general formula (N-1-5) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-5) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 30% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 20% by mass.

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

The compounds represented by formula (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) may be used alone or in combination. is also possible.

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

(In the formula, R ^N1101 and R ^N1102 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
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 group, propyl group, butyl group, vinyl group 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, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-10) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-10) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 35% by mass. The lower limit of the more preferable content is 2% by mass, and the upper limit is 25% by mass.

Furthermore, the compound represented by general formula (N-1-10) is a compound selected from the group of compounds represented by formula (N-1-10.1) to formula (N-1-10.21). It is preferable that Preferably, they are compounds of formula (N-1-10.1), formula (N-1-10.2), formula (N-1-10.20) and formula (N-1-10.21). Compounds represented by are preferred.

Compounds represented by formula (N-1-10.1), formula (N-1-10.2), formula (N-1-10.20) and formula (N-1-10.21) are used alone. It can be used alone or in combination.

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

(In the formula, R ^N1111 and R ^N1112 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
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 group, propyl group, butyl group, vinyl group 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, and preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound represented by the general formula (N-1-11) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-11) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 75% by mass. The lower limit of the more preferable content is 2%, and the upper limit is 50% by mass.

Furthermore, the compound represented by general formula (N-1-11) is a compound selected from the group of compounds represented by formula (N-1-11.1) to formula (N-1-11.14). Preferably, it is a compound represented by formula (N-1-11.1) to (N-1-11.5), and it is preferably a compound represented by formula (N-1-11.2 and formula (N- Compounds represented by 1-11.4) are preferred.

The compounds represented by formula (N-1-11.2) and formula (N-1-11.4) can be used alone or in combination. The compound represented by 12) is the following compound.

(In the formula, R ^N1121 and R ^N1122 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1121 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 group, a propyl group, or a butyl group. R ^N1122 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 preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-12) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-12) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

(In the formula, R ^N1131 and R ^N1132 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1131 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 group, a propyl group, or a butyl group. R ^N1132 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 preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-13) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-13) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

(In the formula, R ^N1141 and R ^N1142 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1141 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 group, a propyl group, or a butyl group. R ^N1142 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound represented by the general formula (N-1-14) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-14) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

(In the formula, R ^N1151 and R ^N1152 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1151 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 group, a propyl group, or a butyl group. R ^N1152 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 preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-15) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-15) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

(In the formula, R ^N1161 and R ^N1162 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1161 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 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, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-16) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-16) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

(In the formula, R ^N1171 and R ^N1172 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1171 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 group, a propyl group, or a butyl group. R ^N1172 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 preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-17) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-17) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

(In the formula, R ^N1181 and R ^N1182 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1181 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a methyl group, ethyl group, propyl group or 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, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-18) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-18) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 35% by mass. The lower limit of the more preferable content is 2% by mass, and the upper limit is 25% by mass.

Furthermore, the compound represented by general formula (N-1-18) is a compound selected from the group of compounds represented by formula (N-1-18.1) to formula (N-1-18.5). Preferably, it is a compound represented by the formula (N-1-18.1) to (N-1-11.3), and the compound represented by the formula (N-1-18.2 and the formula (N- Compounds represented by 1-18.3) are preferred.

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

(In the formula, R ^N1201 and R ^N1202 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1201 and R ^N1202 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group.

The compound represented by the general formula (N-1-20) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-20) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

(In the formula, R ^N1211 and R ^N1212 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1211 and R ^N1212 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group.

The compound represented by the general formula (N-1-21) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-21) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

(In the formula, R ^N1221 and R ^N1222 each independently represent the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
R ^N1221 and R ^N1222 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group.

The compound represented by the general formula (N-1-22) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-1-21) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

Furthermore, the compound represented by general formula (N-1-22) is a compound selected from the group of compounds represented by formula (N-1-22.1) to formula (N-1-22.12). Preferably, compounds represented by formulas (N-1-22.1) to (N-1-22.5) are preferably compounds represented by formulas (N-1-22.1) to (N-1-22.1) to (N-1-22.5). Compounds represented by 1-22.4) are preferred.

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

(In the formula, R ^N211 and R ^N212 each independently represent the same meaning as R ^N21 and R ^N22 in general formula (N-2). Similarly, in the formula, R ^N221 and R ^N222 each independently represent the same meaning as R N21 and R N22 in the general formula (N-2). , represents the same meaning as R ^N21 and R ^N22 in general formula (N-2).)
R ^N211 and R ^N221 are preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group.

R ^N221 and R ^N222 are preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group. preferable.

The compound represented by formula (N-2-1) or formula (N-2-2) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.
The compound represented by formula (N-2-1) or formula (N-2-2) relative to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for light-scattering liquid crystal elements according to the present invention The lower limit of the preferable content is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

Furthermore, the compound represented by formula (N-2-1) or formula (N-2-2) can be expressed by formula (N-2-1.1) to formula (N-2-1.5), formula ( The compound is preferably selected from the group of compounds represented by formula (N-2-2.1) to formula (N-2-2.2).

The compound represented by general formula (N-3) is preferably a compound selected from the group of compounds represented by general formula (N-3-2).

(In the formula, R ^N321 and R ^N322 each independently represent the same meaning as R ^N#1 and R ^N32 in general formula (N-3).)
R ^N321 and R ^N322 are preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a propyl group or a pentyl group.

The compound represented by the general formula (N-3-2) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (N-3-2) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the composition for light-scattering liquid crystal element liquid crystal according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

Furthermore, the compound represented by general formula (N-3-2) is a compound selected from the group of compounds represented by formula (N-3-2.1) to formula (N-3-2.3). It is preferable that there be.

The liquid crystal composition for a light-scattering liquid crystal element according to the present invention preferably contains one or more liquid crystal compounds represented by the general formula (L) as the non-polymerizable liquid crystal compound.

The compound represented by the general formula (2) preferably includes a compound represented by the following general formula (L). The liquid crystal compound represented by the general formula (L) corresponds to a dielectrically substantially neutral compound (the value of dielectric anisotropy Δε is −2 to 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 - in the alkyl group each independently represent -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,
n ^L1 represents 0, 1, 2 or 3,
A ^L1 , A ^L2 and A ^L3 each independently represent (a) a 1,4-cyclohexylene group (one -CH ₂ - present in this group or two or more non-adjacent -CH ₂ - may be replaced with -O-) and (b) 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be replaced with -N = may be replaced.)
(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with -N=. )
represents a group selected from the group consisting of, and one or more hydrogen atoms present in the above groups (a), (b), and (c) each independently represent a cyano group, a fluorine group, May be substituted with an atom or a chlorine atom,
Z ^L1 and Z ^L2 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
n When ^L1 is 2 or 3 and there are multiple A ^L2s , they may be the same or different; n When ^L1 is 2 or 3 and there are multiple Z ^L2s , they may be the same or different. )
The compounds 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, but they are used in appropriate combinations depending on desired performance such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, and the like. For example, in one embodiment of the present invention, one type of compound is used. Alternatively, in other embodiments of the invention, there are two types, three types, four types, five types, six types, seven types, eight types, nine types, ten types. It is more than a kind.

In the liquid crystal composition for a light-scattering liquid crystal element according to the present invention, the content of the liquid crystal compound represented by the general formula (L) is determined by the solubility at low temperature, transition temperature, electrical reliability, birefringence, It is necessary to adjust it as appropriate depending on the required performance such as process compatibility, drip marks, sticking, and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 1% by mass. The upper limit is 85% by mass. The lower limit of the more preferable content is 3% by mass, and the upper limit is 65% by mass.

When the viscosity of the composition is kept low and a composition with a fast response speed is required, it is preferable that the lower limit value is higher and the upper limit value is higher. Further, when it is necessary to maintain a high T _NI of the composition according to the present invention and to obtain a composition with good temperature stability, it is preferable that the above lower limit value is high and the upper limit value is high. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value is lower and the upper limit value is lower.

When reliability is important, both R ^L1 and R ^L2 are preferably alkyl groups, and when emphasis is placed on reducing the volatility of the compound, it is preferable that they are alkoxy groups, and when emphasis is placed on reducing viscosity. In this case, at least one of them is preferably an alkenyl group.

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

When the ring structure to which they are bonded is a phenyl group (aromatic), R ^L1 and R ^L2 are a linear alkyl group having 1 to 5 carbon atoms, and a linear alkyl group having 1 to 4 carbon atoms. An alkoxy group and an alkenyl group having 4 to 5 carbon atoms are preferable, and when the ring structure to which they are bonded is a saturated ring structure such as cyclohexane, pyran, and dioxane, a linear alkoxy group having 1 to 5 carbon atoms is preferable. Preferred are alkyl groups, linear alkoxy groups having 1 to 4 carbon atoms, and linear alkenyl groups having 2 to 5 carbon atoms. In order to stabilize the nematic phase, the total number of carbon atoms and, if present, oxygen atoms is preferably 5 or less, and linearity is preferred.

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

n ^L1 is preferably 0 when emphasis is placed on response speed, preferably 2 or 3 in order to improve the upper limit temperature of the nematic phase, and preferably 1 in order to balance these. Further, in order to satisfy the characteristics required for the composition, it is preferable to combine compounds having different values.

A ^L1 , A ^L2 and A ^L3 are preferably aromatic when it is required to increase Δn, preferably aliphatic in order to improve response speed, and each independently trans- 1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5-difluoro-1,4-phenylene group , 1,4-cyclohexenylene group, 1,4-bicyclo[2.2.2]octylene group, piperidine-1,4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6 -diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, more preferably the following structure,

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

Z ^L1 and Z ^L2 are preferably single bonds when response speed is important.

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

The compound represented by the general formula (L) is preferably a compound selected from the group of compounds represented by the general formulas (L-1) to (L-9).

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

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

The compound represented by the general formula (L-1) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content is 0% by mass with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention, and the upper limit is 30% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 20% by mass.

When the viscosity of the composition is kept low and a composition with a fast response speed is required, it is preferable that the lower limit value is higher and the upper limit value is higher. Furthermore, if a composition that maintains a high _TNI and has good temperature stability is required, it is preferable that the lower limit value is moderate and the upper limit value is moderate. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value is low and the upper limit value is low.

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

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

The lower limit of the preferable content of the compound represented by formula (L-1-1.3) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention The value is 0% and the upper limit is 20% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 13% by mass.

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

(In the formula, R ^L12 represents the same meaning as in general formula (L-1).)
The lower limit of the preferable content of the compound represented by formula (L-1-2) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

Furthermore, the compound represented by general formula (L-1-2) is a compound selected from the group of compounds represented by formula (L-1-2.1) to formula (L-1-2.4). Preferably, it is a compound represented by a formula (L-1-2.2) to a formula (L-1-2.4). In particular, the compound represented by formula (L-1-2.2) is preferred because it particularly improves the response speed of the composition. Furthermore, when seeking T _NI 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). The content of the compounds represented by formulas (L-1-2.3) and (L-1-2.4) is not preferably 30% by mass or more in order to improve solubility at low temperatures. .

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

(In the formula, R ^L13 and R ^L14 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 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. .
The lower limit of the preferable content of the compound represented by formula (L-1-3) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

Furthermore, the compound represented by general formula (L-1-3) is a compound selected from the group of compounds represented by formula (L-1-3.1) to formula (L-1-3.12). Preferably, it is a compound represented by formula (L-1-3.1), formula (L-1-3.3) or formula (L-1-3.4). In particular, the compound represented by formula (L-1-3.1) is preferred because it particularly improves the response speed of the composition. In addition, when determining _TNI higher than the response speed, use formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11), and formula (L It is preferable to use a compound represented by -1-3.12). Total of compounds represented by formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L-1-3.12) It is not preferable for the content to be 20% by mass or more in order to improve solubility at low temperatures.

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

(In the formula, R ^L15 and R ^L16 each independently represent an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms.)
R ^L15 and R ^L16 are preferably 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. .
The lower limit of the preferable content of the compound represented by formula (L-1-4) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.
The lower limit of the preferable content of the compound represented by formula (L-1-5) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

When the reliability of the composition is important, compounds represented by formula (L-1-3.1), formula (L-1-3.3) and formula (L-1-3.4)) It is preferable to combine two or more compounds selected from the following, and when emphasis is placed on the response speed of the composition, compounds represented by formula (L-1-1.3) and formula (L-1-2.2) are preferred. It is preferable to combine two or more kinds of compounds selected from the following compounds.
The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-6).

(In the formula, R ^L17 and R ^L18 each independently represent a methyl group or a hydrogen atom.)
The lower limit of the preferable content of the compound represented by formula (L-1-6) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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

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

(In the formula, R ^L21 and R ^L22 each independently represent the same meaning as R ^L1 and R ^L2 in 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 an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom. An alkoxy group of number 1 to 4 is preferred.

The compound represented by the general formula (L-1) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

If solubility at low temperatures is important, setting the content to be high will have a high effect.On the other hand, if response speed is important, setting the content to be low will have a high effect. Furthermore, when improving drip marks and burn-in characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by formula (L-2) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0 mass. %, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

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), and Compounds represented by (L-2.1), formula (L-2.3), formula (L-2.4) and formula (L-2.6) are preferred.

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

(In the formula, R ^L31 and R ^L32 each independently represent the same meaning as R ^L1 and R ^L2 in general formula (L).)
R ^L31 and R ^L32 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.

The compound represented by general formula (L-3) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (L-3) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0 mass. %, and the upper limit is 50% by mass. The lower limit of the more preferable content is 1% by mass, and the upper limit is 35% by mass.

In order to obtain a high birefringence index, it is more effective to set the content to be higher, and on the other hand, if high _TNI is important, it is more effective to set the content to be lower. Furthermore, when improving drip marks and burn-in characteristics, it is preferable to set the content range in the middle.

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-3.7), and Compounds represented by formulas (L-3.1) to (L-3.4) are preferred.

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

(In the formula, R ^L41 and R ^L42 each independently represent the same meaning as R ^L1 and R ^L2 in 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 an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom. An alkoxy group of number 1 to 4 is preferred. )
The compound represented by general formula (L-4) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

In the composition, the content of the compound represented by the general formula (L-4) is determined based on the solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drip marks, seizure, It is necessary to adjust it appropriately according to the required performance such as dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L-4) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0 mass. %, and the upper limit is 35% by mass. The lower limit of the more preferable content is 1% by mass, and the upper limit is 25% by mass.

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

Depending on the required performance such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, etc., even if it contains a compound represented by formula (L-4.1), -4.2) even if it contains both the compound represented by formula (L-4.1) and the compound represented by formula (L-4.2). It may contain all the compounds represented by formulas (L-4.1) to (L-4.3).

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

Depending on the required performance such as solubility at low temperatures, transition temperature, electrical reliability, birefringence, etc., even if it contains a compound represented by formula (L-4.4), -4.5), but it does not contain both the compound represented by formula (L-4.4) and the compound represented by formula (L-4.5). You can leave it there.

The compound represented by general formula (L-4) is preferably a compound represented by formula (L-4.7) to formula (L-4.10), particularly formula (L-4. Compounds represented by 9) are preferred.

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

(In the formula, R ^L51 and R ^L52 each independently represent the same meaning as R ^L1 and R ^L2 in general formula (L).)
R ^L51 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^L52 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom. An alkoxy group of number 1 to 4 is preferred.

The compound represented by the general formula (L-5) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

In the composition, the content of the compound represented by the general formula (L-5) is determined based on low-temperature solubility, transition temperature, electrical reliability, birefringence, process compatibility, drip marks, seizure, It is necessary to adjust it appropriately according to the required performance such as dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L-5) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass. and the upper limit is 50% by mass. The lower limit of the more preferable content is 1% by mass, and the upper limit is 35% by mass.

The compound represented by general formula (L-5) is preferably a compound represented by formula (L-5.1) or formula (L-5.2), particularly formula (L-5. A compound represented by 1) is preferable.

The lower limit of the preferable content of these compounds with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 20% by mass. %. The lower limit of the more preferable content is 0% by mass, and the upper limit is 13% by mass.

The compound represented by general formula (L-5) is preferably a compound represented by formula (L-5.3) or formula (L-5.4).

The lower limit of the preferable content of these compounds with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 50% by mass. %. The lower limit of the more preferable content is 1% by mass, and the upper limit is 35% by mass.

The compound represented by general formula (L-5) is preferably a compound selected from the group of compounds represented by formula (L-5.5) to formula (L-5.7), particularly formula ( A compound represented by L-5.7) is preferable.

The lower limit of the preferable content of these compounds with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0% by mass, and the upper limit is 20% by mass. %. The lower limit of the more preferable content is 0% by mass, and the upper limit is 13% by mass.

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

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

The compound represented by the general formula (L-6) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (L-6) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0 mass. %, and the upper limit is 35% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 25% by mass. When emphasis is placed on increasing Δn, it is preferable to increase the content, and when emphasis is placed on precipitation at low temperatures, it is preferable that the content is small.

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

Although there are no particular limitations on the types of compounds that can be combined, it is preferable to contain one to three types of these compounds, and more preferably one to four types. In addition, a wide molecular weight distribution of the selected compound is also effective for solubility, so for example, one of the compounds represented by formula (L-6.1) or (L-6.2), 6.4) or (L-6.5), one type from the compounds represented by formula (L-6.6) or formula (L-6.7), and one type of compound represented by formula (L-6.6) or (L-6.7). It is preferable to select one type of compound from the compounds represented by -6.8) or (L-6.9) and combine these as appropriate. Among them, the formulas (L-6.1), (L-6.3), (L-6.4), (L-6.6), and (L-6.9) Preferably, it contains a compound.

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

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

(In the formula, R ^L71 and R ^L72 each independently represent the same meaning as R ^L1 and R ^L2 in general formula (L), and A ^L71 and A ^L72 each independently represent A L2 and R ^L2 in general formula (L). represents the same meaning as A ^L3 , but the hydrogen atoms on A ^L71 and A ^L72 may each be independently substituted with a fluorine atom, and Z ^L71 represents the same meaning as Z ^L2 in general formula (L), X ^L71 and X ^L72 each independently represent a fluorine atom or a hydrogen atom.)
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, and A ^L71 and A ^L72 are each independently preferably a 1,4-cyclohexylene group or a 1,4-phenylene group, the hydrogen atoms on A ^L71 and A ^L72 may each be independently substituted with a fluorine atom, and Z ^L71 is a single A bond or COO- is preferred, a single bond is preferred, and X ^L71 and X ^L72 are preferably hydrogen atoms.

There are no particular restrictions on the types of compounds that can be combined, but they are combined depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, or four types in one embodiment of the present invention.

In the composition, the content of the compound represented by the general formula (L-7) is determined based on low-temperature solubility, transition temperature, electrical reliability, birefringence, process compatibility, drip marks, seizure, It is necessary to adjust it appropriately according to the required performance such as dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L-7) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0 mass. %, and the upper limit is 25% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 15% by mass.

When the composition is desired to have a high _TNI , it is preferable to increase the content of the compound represented by formula (L-7), and when a low viscosity embodiment is desired, the content is preferably increased. It is preferable to reduce the amount.

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.1) to formula (L-7.4), and the compound represented by formula (L-7. A compound represented by 2) is preferable.

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 the compound represented by formula (L-7. A compound represented by 11) is preferable.

Further, the compounds represented by the general formula (L-7) are compounds represented by the formulas (L-7.21) to (L-7.23). A compound represented by formula (L-7.21) is preferred.

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.31) to formula (L-7.34), and the compound represented by formula (L-7. 31) or/and a compound represented by formula (L-7.32).

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.41) to formula (L-7.44), and the compound represented by formula (L-7. 41) or/and a compound represented by formula (L-7.42).

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

The compound represented by general formula (L-8) is the following compound.

(In the formula, R ^L81 and R ^L82 each independently represent the same meaning as R ^L1 and R ^L2 in general formula (L), and A ^L81 represents the same meaning as A ^L1 in general formula (L) or a single bond. However, each of the hydrogen atoms on A ^L81 may be independently substituted with a fluorine atom, and X ^L81 to X ^L86 each independently represent a fluorine atom or a hydrogen atom.)
In the formula, R ^L81 and R ^L82 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, and A ^L81 is 1, A 4-cyclohexylene group or a 1,4-phenylene group is preferred, and the hydrogen atoms on A ^L71 and A ^L72 may each be independently substituted with a fluorine atom, and the same hydrogen atoms in general formula (L-8) The number of fluorine atoms on the ring structure is preferably zero or one, and the number of fluorine atoms in the molecule is preferably zero or one.

There are no particular restrictions on the types of compounds that can be combined, but they are combined depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, or four types in one embodiment of the present invention.

In the composition, the content of the compound represented by general formula (L-8) is determined based on low-temperature solubility, transition temperature, electrical reliability, birefringence, process compatibility, drip marks, seizure, It is necessary to adjust it appropriately according to the required performance such as dielectric anisotropy.

The lower limit of the preferable content of the compound represented by formula (L-8) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0 mass. %, and the upper limit is 30% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 20% by mass.

When the composition is desired to have a high _TNI , it is preferable to increase the content of the compound represented by formula (L-8), and when a low viscosity embodiment is desired, the content is preferably increased. It is preferable to reduce the amount.

Further, the compound represented by general formula (L-8) is preferably a compound represented by formula (L-8.1) to formula (L-8.4), and the compound represented by formula (L-8. 3), formula (L-8.5), formula (L-8.6), formula (L-8.13), formula (L-8.16) to formula (L-8.18), formula ( Compounds represented by formulas (L-8.23) to (L-8.28) are more preferred.

The compound represented by general formula (L-9) is the following compound.

(In the formula, R ^L91 and R ^L92 each independently represent the same meaning as R ^L1 and R ^L2 in general formula (L).)
R ^L91 and R ^L92 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.

The compound represented by the general formula (L-9) can be used alone, but two or more compounds can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations depending on the required performance, such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, five or more types in one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by formula (L-9) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention is 0 mass. %, and the upper limit is 90% by mass. The lower limit of the more preferable content is 0% by mass, and the upper limit is 75% by mass.

In order to obtain a high birefringence index, it is more effective to set the content to be higher, and on the other hand, if high _TNI is important, it is more effective to set the content to be lower. Furthermore, when improving drip marks and burn-in characteristics, it is preferable to set the content range in the middle.

Further, the compound represented by the general formula (L-9) is preferably a compound selected from the group of compounds represented by the formulas (L-9.1) to (L-9.5).

Preferable total content of compounds represented by general formula (N) and general formula (L) with respect to the total amount of non-polymerizable liquid crystal compounds contained in the liquid crystal composition for light-scattering liquid crystal elements according to the present invention The lower limit of the amount is 80% by weight and the upper limit is 100% by weight. The lower limit of the more preferable content is 90% by mass, and the upper limit is 100% by mass.

General formulas (N-1-1) to (N-1-18), general formula (L The lower limit of the preferable total content of the compounds represented by -1) to (L-9) is 80% by mass, and the upper limit is 100% by mass. The lower limit of the more preferable content is 95% by mass, and the upper limit is 100% by mass.

The liquid crystal composition for a light-scattering liquid crystal element according to 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.

When the reliability and long-term stability of the composition are important, the content of the compound having a carbonyl group is preferably 5% by mass or less, and 3% by mass or less based on the total mass of the composition. is more preferable, it is still more preferable that it is 1% by mass or less, and it is most preferable that it is substantially not contained.

If stability by UV irradiation is important, the content of the compound in which chlorine atoms are substituted is preferably 15% by mass or less, and preferably 10% by mass or less, based on the total mass of the composition. , is preferably 8% by mass or less, more preferably 5% by mass or less, preferably 3% by mass or less, and even more preferably substantially free.

It is preferable to increase the content of the compound in which all the ring structures in the molecule are 6-membered rings, and the content of the compound in which all the ring structures in the molecule are 6-membered rings is 80% relative to the total mass of the composition. It is preferably at least 90% by mass, even more preferably at least 95% by mass, and is composed only of compounds in which substantially all the ring structures in the molecule are 6-membered rings. Constructing things is most preferred.

In order to suppress deterioration of the composition due to oxidation, it is preferable to reduce the content of the compound having a cyclohexenylene group as a ring structure, and the content of the compound having a cyclohexenylene group should be reduced to the total mass of the composition. It is preferably 10% by mass or less, preferably 8% by mass or less, more preferably 5% by mass or less, preferably 3% by mass or less, and it is preferably not substantially contained. More preferred.

When emphasizing the improvement of viscosity and _TNI , the content of a compound having a 2-methylbenzene-1,4-diyl group in the molecule in which the hydrogen atom may be substituted with a halogen should be reduced. is preferable, and the content of the compound having the 2-methylbenzene-1,4-diyl group in the molecule is preferably 10% or less, more preferably 8% or less, based on the total mass of the composition. The content is preferably 5% or less, more preferably 3% or less, and even more preferably substantially free.

In the present application, "substantially not contained" means not contained except for unintentionally contained substances.

When the liquid crystal compound contained in the liquid crystal composition for a light-scattering liquid crystal element according to the present invention has an alkenyl group as a side chain, and when the alkenyl group is bonded to cyclohexane, the number of carbon atoms in the alkenyl group is is preferably 2 to 5, and when the alkenyl group is bonded to benzene, the number of carbon atoms in the alkenyl group is preferably 4 to 5, and the unsaturated bond of the alkenyl group and benzene are Preferably, they are not directly bonded.

On the other hand, when scattering performance during voltage application is not required so much and only lower voltage driving is required, ^R22 may be a fluorine atom, a chlorine atom, a cyano group, a CF3 group, or It is preferable to contain a non-polymerizable compound having ₃ OCF groups, ₂ OCHF groups, and an NCS group, and specifically, compounds represented by the following general formula (P-1), (P-2), or (P-3). Liquid crystal compounds are preferred.

(In the formula, R ^P1 , R ^P2 , and R ^P3 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or more non-adjacent -CH ₂ - in the alkyl group is Each may be independently substituted with -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
A ^P1 , A ^P2 and A ^P3 each independently represent (a) a 1,4-cyclohexylene group (one -CH ₂ - present in this group or two or more non-adjacent -CH ₂ - may be replaced with -O-) and (b) 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be replaced with -N = may be replaced.)
(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with -N=. )
(d) represents a group selected from the group consisting of 1,4-cyclohexenylene group, and the above group (a), group (b), group (c) and group (d) each independently represent a cyano group, May be substituted with a fluorine atom or a chlorine atom,
Z ^P1 , Z ^P2 and Z ^P3 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
X ^P11 , X ^P31 , and X ^P31 each independently represent a fluorine atom, a cyano group, a CF group, an OCF group, an OCHF group, or an NCS group,
X ^P12 , X ^P13 , X ^P22 , X ^P23 , X ^P24 , X ^P32 , and X ^P33 each independently represent a hydrogen atom or a fluorine atom,
n ^P1 , n ^P2 , and n ^P3 each independently represent an integer of 1 to 3.
Among general formulas (P-1), (P-2), or (P-3), compounds represented by (P-11) to (P-56) are preferred.

(In the formula, R ^P4 represents an alkyl group having 1 to 8 carbon atoms, and one or more non-adjacent -CH ₂ - in the alkyl group are each independently -CH=CH-, -O -, may be replaced by .)
(Third component: photoinitiator)
The liquid crystal composition for a light-scattering liquid crystal element according to the present invention contains a photopolymerization initiator as a third component. It is preferable to contain at least one type of photopolymerization initiator. Specifically, BASF's "Irgacure 651,""Irgacure184,""Darocure1173,""Irgacure907,""Irgacure127,""Irgacure369,""Irgacure379,""Irgacure819,"" Irgacure 2959", "Irgacure 1800", "Irgacure 250", "Irgacure 754", "Irgacure 784", "Irgacure OXE01", "Irgacure OXE04", "Lucirin TPO", "Darocure 1173", "Darocure MBF" and LAMBSON "Esacure 1001M", "Esacure KIP150", "Speed Cure BEM", "Speed Cure BMS", "Speed Cure MBP", "Speed Cure PBZ", "Speed Cure ITX", "Speed Cure DETX", ""Speed Cure EBD", "Speed Cure MBB", "Speed Cure BP", "Kaya Cure DMBI" manufactured by Nippon Kayaku Co., Ltd., "TAZ-A" manufactured by Nippon Siberhegner Co., Ltd. (currently DKSH), "Adeka" manufactured by ADEKA ``Adeka Optomer SP-152'', ``Adeka Optomer SP-170'', ``Adeka Optomer N-1414'', ``Adeka Optomer N-1606'', ``Adeka Optomer N-1717'', ``Adeka Optomer N-1919'' ”, “CylaCure UVI-6990”, “CylaCure UVI-6974” and “CylaCure UVI-6992” manufactured by UCC, “Adeka Optomer SP-150, SP-152, SP-” manufactured by Asahi Denka Kogyo Co., Ltd. 170, SP-172”, “PHOTOINITIATOR 2074” manufactured by Rhodia, “Irgacure 250” manufactured by BASF, “UV-9380C” manufactured by GE Silicones, “DTS-102” manufactured by Midori Kagaku, etc.

The amount of the photopolymerization initiator used is preferably 0.01 to 5% by mass, particularly preferably 0.05 to 0.5% by mass, based on the liquid crystal composition for a light-scattering liquid crystal element. These can be used alone or in combination of two or more, and a sensitizer or the like may be added.
(Light scattering liquid crystal element)
A light-scattering liquid crystal device using the liquid crystal composition for a light-scattering liquid crystal device of the present invention includes a phase-separated liquid crystal layer, an alignment film, and an electrode.

The liquid crystal element of the present invention is not particularly limited in its specific embodiment as long as it has the above elements, but for example, the liquid crystal element may be formed between two transparent substrates having electrodes on at least one side and an alignment film. A structure in which phase-separated liquid crystal layers are sandwiched may be used.

In the light-scattering liquid crystal element of the present invention, the alignment state of the phase-separated liquid crystal layer is maintained in a power-off state. Therefore, it can be used as an element that can be driven in so-called reverse mode. That is, the liquid crystal element can be in a transparent state when no voltage is applied, and can be in a scattering state when a voltage is applied.

In the light-scattering liquid crystal element of the present invention, the alignment of liquid crystal molecules is controlled not only by an alignment film but also by a dense polymer network made of an alignment polymer. Therefore, the liquid crystal element of the present invention is less prone to alignment disturbance due to external stress and has high stress resistance. The liquid crystal element of the present invention is less prone to display defects even under environments where bending stress is applied, and therefore can be made bendable. Therefore, the liquid crystal element of the present invention may have a curved surface.
(alignment film)
As the alignment film, a homeotropic alignment film or a homogeneous alignment film can be used depending on the purpose. The homeotropic alignment film may be any film that has the effect of inducing homeotropic alignment by directly contacting the composite liquid crystal composition or the phase-separated liquid crystal layer. As such an alignment film, a known one may be used. Usually, a pair of homeotropic alignment films are arranged so as to sandwich a liquid crystal phase therebetween. Usually, a homeotropic alignment film is placed on each surface of a pair of opposing substrates. The homogeneous alignment film may be any film that can regulate the alignment direction of the liquid crystal by treatment such as rubbing, and any known alignment film may be used as such an alignment film.

Examples of the alignment film include a polyimide alignment film, a photo alignment film, and the like. As a method for forming an alignment film, for example, in the case of a polyimide alignment film, a polyimide resin composition is applied onto a transparent substrate, heat-cured at a temperature of 180°C or higher, and then rubbed with cotton cloth or rayon cloth. One method is to do so. Furthermore, a polymer film such as a polyimide film that has not been subjected to rubbing treatment can also be used as the homeotropic alignment film. Furthermore, it is also possible to use spontaneous vertical alignment (PI-less) monomers that enable vertical alignment without using a vertically aligned polyimide alignment film. Known monomers can be used as the spontaneous vertical alignment monomer. As the photo-alignable homogeneous alignment film, those of photodecomposition type, dimerization type, isomerization type, etc. can be used.
(electrode)
The electrodes are provided in the liquid crystal element of the present invention so as to generate an electric field that can control the alignment of liquid crystal molecules in the phase-separated liquid crystal layer. The electrode is preferably a transparent electrode such as ITO. The shape of the electrode is not particularly limited, and in the case of applications such as smart windows, the entire surface may be an electrode, or a pattern may be formed depending on the purpose.
(transparent substrate)
As the material of the transparent substrate, glass, plastic, etc. can be used. From the viewpoint of applying the liquid crystal element of the present invention to a flexible display, the transparent substrate is preferably flexible.
(Manufacturing example of liquid crystal element)
From the viewpoint of productivity, the light-scattering liquid crystal element of the present invention is a polymerizable liquid crystal element in which a liquid crystal composition for a light-scattering liquid crystal element is sandwiched between two substrates on which the electrodes and alignment films are formed. Preferably, it is made from. In a light-scattering liquid crystal element, the liquid crystal compound and the polymerizable compound having a mesogenic group in the non-polymerizable liquid crystal composition are in a homeotropic or homogeneous alignment state due to the alignment control force of the alignment film. Under this alignment state, the polymerizable compound in the liquid crystal composition for a light-scattering liquid crystal element is cured with ultraviolet light by the method described below, and a phase-separated liquid crystal layer is formed from the liquid crystal composition for a light-scattering liquid crystal element. A scattering type liquid crystal element is obtained.
Regarding the method of irradiating ultraviolet rays, the lamp may be a metal halide, high pressure mercury, UV-LED, or any other device normally used for ultraviolet polymerization. The ultraviolet light intensity is preferably 1 to 100 mW/cm ² , more preferably 1 to 20 mW/cm ² , and even more preferably 2 to 10 mW/cm ² using a 365 nm sensor. The ultraviolet irradiation energy is preferably 1 to 50 J/cm ² , more preferably 2 to 20 J/cm ² . The temperature at which ultraviolet rays are irradiated is preferably 15 to 30°C.

The liquid crystal composition for a light-scattering liquid crystal element may be held between two substrates on which electrodes and alignment films are formed by any conventional method, such as a vacuum injection method or an ODF method. In the process of manufacturing a polymerizable liquid crystal element using the ODF method, a sealant such as an epoxy-based photothermal curing compound is drawn in a closed-loop bank shape on either the back plane or front plane substrate of the hollow element using a dispenser. A polymerizable liquid crystal element can be manufactured by dropping a predetermined amount of the composite liquid crystal composition therein under deaerated conditions and then joining the front plane and back plane. Further, in the case of roll-to-roll production using a film substrate, the liquid crystal composition for a light-scattering liquid crystal element may be dropped onto the base material by a simple dropping method, and the composition may be laminated with a counter substrate. Alternatively, a method may be used in which the entire film is sealed by laminating it in a post-process without having a sealing structure.

The light scattering type liquid crystal element of the present invention may be configured so that the alignment of liquid crystal molecules can be controlled by applying a voltage, but it is preferably configured as a vertical electric field type liquid crystal element. A vertical electric field type liquid crystal element is a liquid crystal element in which electrodes are arranged so that an electric field is generated perpendicularly to an alignment film. In a vertical electric field type liquid crystal element, electrodes are usually provided on both of two transparent substrates that sandwich a phase-separated liquid crystal layer.

The polymer network vertical electric field type liquid crystal light control device is preferably used for, for example, building materials, light control glass, smart windows for vehicles, light control units in OLED displays, transparent displays, etc., and has particularly high light scattering properties and is easy to drive. It is useful as a smart window because it can reduce voltage.

The above-mentioned vertical electric field type liquid crystal display element can be used for the same purposes as conventional polymer dispersion type liquid crystal display elements, and can also be particularly preferably used for transmission type displays, flexible displays, and the like.
(Other electric field types)
In addition to the above-mentioned vertical electric field type, a horizontal electric field type or other electric field type may be adopted for the light scattering type liquid crystal element of the present invention. A fringe electric field employed in the FFS drive mode may also be employed.

EXAMPLES The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to these Examples. Moreover, "%" in the compositions of the following examples and comparative examples means "mass %".

The details of each evaluation characteristic in each example and comparative example are as follows.
Toff: Light transmittance in the normal direction of the cell substrate surface when no voltage is applied (transparent state) [%]
*The higher this number, the higher the transparency.
Ton: Saturation light transmittance [%] when voltage is applied (scattering state) in the normal direction of the cell substrate surface *The lower this value is, the higher the scattering property is.
V10: If the transmittance at Toff is 100% and the transmittance at Ton is 0%, the voltage when the transmittance reaches 10% is the driving voltage [V]
HS50: Value of the difference (Vup50-Vdown50) between the voltage Vup50 when the voltage increases and the voltage Vdown50 when the voltage decreases, indicating a transmittance of 50% [V]
The structures of the polymerizable compounds (1-A) to (2-B) used in each Example and Comparative Example are as shown in the following formula. Moreover, Irgacure 651 (manufactured by BASF) was used as a polymerization initiator.

The liquid crystal compositions "L-1" to "L-3" used in each example and comparative example are as follows (% by mass).
(Liquid crystal composition "L-1")

(Liquid crystal composition “L-2”)

(Liquid crystal composition “L-3”)

(Example 1)
95.92% by mass of liquid crystal composition "L-1", 4% by mass of polymerizable composition "A-1", and 0.08% by mass of Irgacure 651 (manufactured by BASF) as a polymerization initiator, A liquid crystal composition for a light-scattering liquid crystal element was prepared. The obtained liquid crystal composition for a light-scattering liquid crystal element exhibited a nematic phase at room temperature. Further, the obtained polymerizable liquid crystal composition was left in a constant temperature bath at 10°C, 0°C, and -10°C for 3 days, and the presence or absence of precipitation was observed.

A liquid crystal cell was prepared in which a set of two substrates each having an ITO transparent electrode formed in a rectangular shape and a polyimide alignment film material for vertical alignment formed with a thickness of about 0.1 μm were placed facing each other at an interval of 5 μm.

The prepared liquid crystal composition for a light-scattering liquid crystal element was injected into this cell by a vacuum injection method. Approximately 10 minutes after the injection, the alignment state within the cell was confirmed, and it was confirmed that the polymerizable liquid crystal composition was uniformly aligned in the vertical direction.

Next, the prepared filled liquid crystal cell is irradiated with ultraviolet rays while being maintained at 25 ± 1 ° C., and the polymerizable monomer is polymerized to form a phase-separated liquid crystal layer from the liquid crystal composition for a light scattering type liquid crystal element. A light-scattering liquid crystal device was fabricated. At this time, a metal halide lamp was used as the ultraviolet light source, and ultraviolet rays were irradiated for 240 seconds at an illuminance of 8.6 mW/cm ² (total integrated energy of 2.1 J/cm ² ). Illuminance was measured using a Unimeter UIT-101 with a photoreceiver UVD-365PD manufactured by Ushio Inc.

The obtained liquid crystal element was in a transparent state with no scattering observed when no voltage was applied, and it was confirmed that the liquid crystal was vertically aligned.

The voltage-transmittance characteristics were measured using a device equipped with a light emitter on one substrate side of the liquid crystal element and a light receiver on the other substrate side, with no polarizing plates above or below the liquid crystal element. . At a measurement temperature of 25°C, a rectangular wave was applied between the electrodes of the liquid crystal element, the voltage was increased stepwise from 0 V until the transmittance change was saturated, and the liquid crystal element was placed on the opposite side of the projector. The measurement was performed by recording the transmittance detected by a light receiver. It was confirmed that as the voltage increased, light scattering increased and transmittance decreased. In addition, the transmittance at the time of voltage drop was also measured in the same manner. A liquid crystal characteristic measuring device LCD-5200 (manufactured by Otsuka Electronics Co., Ltd.) was used to measure the voltage-transmittance characteristics.

From the voltage-transmittance characteristic curve, the transmittance Toff when no voltage was applied and the transmittance Ton when a saturation voltage was applied were determined. Furthermore, when the transmittance at Toff was 100% and the transmittance at Ton was 0%, the voltage at which the transmittance reached 10% was calculated as the drive voltage (V10). Furthermore, the value of transmittance T (10v) when a voltage of 10v was applied was also determined. The hysteresis characteristic was calculated by defining HS50 as the value of the difference (Vup50-Vdown50) between the voltage Vup50 when the voltage increases and the voltage Vdown50 when the voltage decreases, indicating a transmittance of 50%.

Toff is 87.1%, Ton is 4.5%, V10 is 14v, T (10v) is 26%, HS50 is 0.42v, there is no precipitation when stored at 10°C, and when stored at 0°C and -10°C. There was precipitation.
(Example 2 to Example 10, Comparative Example 1 to Comparative Example 6)
Compounds used in the liquid crystal compositions for light-scattering liquid crystal elements of Examples 2 to 10 and Comparative Examples 1 to 6 prepared under the same conditions as Example 1, and each light-scattering liquid crystal Tables 1 to 3 show the characteristics of a light scattering liquid crystal device manufactured using the device liquid crystal composition under the same conditions as in Example 1.

The composition of the example has a higher driving voltage (V10) and higher transmittance when 10 V is applied than the comparative example. It can also be seen that the HS50 value is large and the hysteresis characteristics are poor.

Claims (6)

The first component contains a polymerizable compound selected from the group of compounds represented by the following general formula (I), and the second component contains a non-polymerizable compound represented by the general formula (2) . A liquid crystal composition for a light-scattering type liquid crystal element, which contains one or more species and a photopolymerization initiator as a third component.

(In the formula, P ¹¹ and P ¹² each independently represent a polymerizable group,
S ¹¹ and S ¹² each independently represent a spacer group,
X ¹¹ and X ¹² are each independently -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO-, -CO-S-, -S- CO-, -O-CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O-, -OCF ₂ -, -CF ₂ S- , -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-R ^X1 -, -OCO-R ^X1 -, -R ^X1 -COO-, -R ^X1 -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH ₂ -, -N=N-, -CH=N-N=CH-, -CF=CF-, -C≡C- or a single bond (however, ^-R represents an alkylene group of ~6), (however, each P-(S-X)- bond does not include -O-O-),
Z ¹¹ is -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO-, -CO-S-, -S-CO-, -O-CO -O-, -CO-NH-, -NH-CO-, -SCH _{2 -, -CH 2 S-} , -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, - CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-R ^Z1 -, -OCO-R ^Z1 -, -R ^Z1 -COO -, -R ^Z1 -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH ₂ -, -N=N-, -CH=N-N=CH-, -CF=CF-, or -C≡C- (However, -R ^Z1 - represents an alkylene group having 2 to 6 carbon atoms.) represents,
A ¹¹ and A ¹² each independently represent a group selected from a divalent aromatic ring, an alicyclic ring, a heterocycle, and a fused ring. )

(In the formula, R ²¹ represents an alkyl group having 1 to 8 carbon atoms, and one or more non-adjacent -CH 2 _- in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,
R ²² represents a fluorine atom, a chlorine atom, a cyano group, a CF ₃ group, an OCF ₃ group, an OCHF ₂ group, an NCS group, or an alkyl group having 1 to 8 carbon atoms; Two or more adjacent -CH ₂ - may each be independently substituted with -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
A ²¹ , A ²² and A ²³ are each independently
(a) 1,4-cyclohexylene group (one -CH ₂ - or two or more non-adjacent -CH ₂ -s present in this group may be replaced with -O-) and
(b) 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be replaced with -N=)
(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with -N=. )
(d) 1,4-cyclohexenylene group
represents a group selected from the group consisting of, and the above group (a), group (b), group (c) and group (d) may each be independently substituted with a cyano group, a fluorine atom or a chlorine atom. well,
Z ²¹ and Z ²² are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
n ²¹ represents an integer from 0 to 3, and when a plurality of A ²¹ or Z ²¹ exist, they may be the same or different. ) As the third component, the following general formula (3-1)

(In the formula, P ³¹ represents a polymerizable functional group,
R ³¹ represents a single bond or an alkylene group having 1 to 9 carbon atoms, and one or more -CH ₂ - in the alkylene group are each independently - so that oxygen atoms are not directly adjacent to each other. It may be substituted with O-, -CO-, -COO- or -OCO-, and one or more hydrogen atoms present in the alkylene group are each independently substituted with a fluorine atom. It's okay,
R ³² and R ³³ each independently represent a hydrogen atom or an alkyl group having 1 to 21 carbon atoms, and one or more -CH ₂ - in the alkyl group is such that an oxygen atom directly Each may be independently substituted with -O-, -CO-, -COO- or -OCO- so that they are not adjacent, and one or more hydrogen atoms present in the alkyl group are each It may be independently substituted with R ³⁴ , and R ³⁴ represents a fluorine atom, an alkyl group having 1 to 8 carbon atoms, or a halogenated alkyl group having 1 to 8 carbon atoms. ) or the following general formula (3-2)

(In the formula, Y ³¹ and Y ³² represent a hydrogen atom or a methyl group,
X ³¹ represents a linear or branched alkylene having 6 to 80 carbon atoms, and any carbon atom of the alkylene is -O-, -CH=CH-, -CO so that no oxygen atom is directly adjacent to it. It may be substituted with -, -C≡C-, -OCO-, -COO-, or OH. )
The liquid crystal composition for a light-scattering liquid crystal element according to claim 1, which contains a polymerizable compound represented by the following. The liquid crystal composition for a light-scattering liquid crystal element according to claim 1 or 2, which contains a polymerizable compound selected from the group of compounds represented by the following general formula (4) as a fourth component.

(In the formula, P ⁴¹ represents a polymerizable group,
S ⁴¹ represents a spacer group or a single bond,
R ⁴² represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a cyano group, an alkyl group having 1 to 20 carbon atoms, or P ⁴² -S ⁴² -, and the alkyl group is a straight chain Any hydrogen atom in the alkyl group may be substituted with a fluorine atom, and one -CH ₂ - in the alkyl group or two non-adjacent hydrogen atoms may be substituted with a fluorine atom. -CH ₂ - each independently represents -O-, -S-, -CO-, -COO-, -OCO-, -CO-S-, -S-CO-, -O-CO-O -, -CO-NH-, -NH-CO- or -C≡C-, P ⁴² represents a polymerizable group, S ⁴² represents a spacer group,
When the bond to S ⁴¹ or R ⁴² is expressed as _the leftmost bond, ^{X 41} and -, -OCO-, -CO-S-, -S-CO-, -O-CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CF ₂ O-, - OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO- CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -COO-CH ₂ -, -OCO-CH ₂ -, -CH=CH-, -N=N-, -CH=N-N=CH- , -CF=CF-, -C≡C- or a single bond (however, each P-(S-X)- bond does not include -O-O-),
Z ⁴¹ is -O-, -S-, -OCH ₂ -, -CH ₂ O-, -CO-, -COO-, -OCO-, -CO-S-, -S-CO-, -O- CO-O-, -CO-NH-, -NH-CO-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-R ^Z41 -, -OCO-R ^Z41 -, -R ^Z41 - COO-, -R ^Z41 -OCO-, -COO-CH 2 -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CH=CH-, -CH ₂ CH _{2 -} , -N=N-, -CH=N-N=CH-, -CF=CF-, -C≡C- or a single bond (however, -R ^Z41 - represents an alkylene having 2 to 6 carbon atoms (representing a group), when multiple Z ^41s exist, they may be the same or different,
A ⁴¹ and A ⁴² each independently represent a group selected from a divalent aromatic ring, an alicyclic ring, a heterocycle, and a condensed ring, and when multiple A ^41s exist, they may be the same or different. It's okay,
Each n ⁴¹ independently represents an integer from 1 to 3. However, among the compounds represented by general formula (IV), the compound represented by general formula (I) is excluded. ) 4. The light source according to claim 3 , wherein the total of the first component, the third component, and the fourth component is 2 to 20% by mass based on all components of the liquid crystal composition for a light-scattering liquid crystal element. Liquid crystal composition for scattering type liquid crystal elements. A light-scattering liquid crystal element formed by forming a polymer network by polymerizing the polymerizable compound of the light-scattering liquid crystal composition according to any one of claims 1 to 4 . It has two electrode-attached substrates, at least one of which is a transparent substrate, and the polymerizable compound of the light-scattering liquid crystal composition according to any one of claims 1 to 4 is polymerized between the substrates. An element having a light-scattering liquid crystal formed by forming a polymer network.