JP2003057441A - Optical film using liquid crystal gel and polarizing film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical film and a polarizing film exhibiting optical anisotropy superior to that of a liquid crystal substance itself contained therein, improving the optical characteristics of an LCD(liquid crystal display) and providing bright and easy-to-see picture quality. SOLUTION: The optical film is provided with a liquid crystal gel obtained by subjecting a gel material containing a liquid crystalline substance and a gelatinizing agent to gelatinize the liquid crystalline substance to gelation. The liquid crystal molecules of the liquid crystalline substance constituting the film are oriented to a specified direction and further the gelatinizing agent constituting the film are aligned parallel or vertical to the orientation direction of the liquid crystal molecules. The polarizing film is constructed by disposing the optical film on a polarizing thin film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical film and a polarizing film using a liquid crystal gel, and particularly to a gel which can be aligned parallel or perpendicular to the orientation direction of the molecules of the liquid crystalline substance constituting the liquid crystal gel. Contains a gelling agent such as fibers, and has some optical function, such as liquid crystal display (LC
The present invention relates to an optical film having a function usable as a polarizing film such as D), a film that improves image quality such as a viewing angle, brightness, and color, and a reflective film.

[0002]

2. Description of the Related Art A technique of applying a liquid crystalline substance to an optical film for improving the optical characteristics of a liquid crystal display has already been put into practical use. For example, LC
An optical film having a discotic liquid crystal having a negative refractive index anisotropy and being hybrid-aligned, which is attached to D to make it possible to widen the viewing angle of the LCD (JP-A-7-984).
No. 11, etc.), an optical film using a cholesteric liquid crystal having a function of improving the brightness of a liquid crystal display, which is appropriately adjusted in pitch (Japanese Patent Laid-Open No. 8-2717331).
Issue bulletin etc.). However, since these are films that utilize only optical anisotropy due to the liquid crystal material itself, in order to bring out its function, advanced alignment technology and lamination technology, and further other optical elements such as a wave plate are required. In addition, since the quality of the product is greatly deteriorated due to the disordered orientation, an extremely accurate manufacturing technique is required. On the other hand, various studies have been conducted on a complex of a liquid crystal substance and another non-liquid crystal substance.
A liquid crystal composition used for a liquid crystal display is usually composed of a mixture of several kinds to more than ten kinds of compounds in order to satisfy various required physical properties. A non-liquid crystalline substance is contained therein, but it is a uniform liquid crystalline substance as a bulk. Further, depending on the display mode, a monomer having a polymerizable group may be mixed in addition to the liquid crystal substance. A composition obtained by mixing a monomer having such a polymerizable group is, for example, sandwiched in a gap between glass substrates or films for fixing liquid crystal, and then polymerized by heat or light to form a composite film, such as a polymer dispersion type liquid crystal element. Can be used for Recently, as a complex of the above-mentioned liquid crystal substance and non-liquid crystal substance, many new types of liquid crystal compositions in which various compounds are added to the liquid crystal composition have been reported. For example, as an example of using a liquid crystal composition containing a low molecular weight liquid crystalline substance and a low molecular weight compound that forms an amorphous material, a low molecular weight compound that forms an amorphous material forms a network by hydrogen bonding and its domain An example in which a low molecular weight liquid crystalline substance is dispersed therein (JP-A-8-2
No. 54688), a liquid crystalline composition comprising a side chain type liquid crystalline polymer formed by hydrogen bond and a low molecular weight liquid crystalline substance is useful for a liquid crystal device having no alignment film and excellent in self-supporting property. An example (Japanese Patent Laid-Open No. 6-43440) has been proposed. Also, the concept of liquid crystal gel has been reported since the early 1990s (for example, Liq. Cryst., 10.5, 733 (199
1)). Such a liquid crystal gel becomes a gel in which the fluidity of the entire material is lost due to the dispersion of the polymer in the liquid crystalline substance and the incorporation of the liquid crystal molecules into the polymer. The polymer forms a network at random. Further, it has been proposed that when a liquid crystal gel using a low molecular weight gelling agent is applied to a practical liquid crystal switching element instead of a polymer, it exhibits excellent responsiveness.
(JP-A-11-52341, JP-A-2000-23)
9663 and JP 2000-305087).

[0003]

However, only the use as a switching element has been reported as the conventionally proposed use of the liquid crystal gel, regardless of the orientation or non-orientation of the gelling agent. In addition, optical films using liquid crystals also utilize the properties of liquid crystalline substances only,
In the case of the above-mentioned polymer composite, only the property of self-holding property is utilized. In addition, the conventional optical film that uses only the optical characteristics of the liquid crystalline substance requires a high manufacturing technology to obtain uniform alignment.

Therefore, it is an object of the present invention to provide an optical film and a polarizing film which can improve the optical characteristics of LCD and provide a bright and easy-to-see image. Another object of the present invention is to provide an optical film and a polarizing film exhibiting optical anisotropy superior to that of the liquid crystalline substance contained therein.

[0005]

According to the present invention, there is provided a liquid crystal gel obtained by gelling a gel material containing a liquid crystalline substance and a gelling agent for gelling the liquid crystalline substance. A featured optical film is provided. According to the present invention, a film comprising a liquid crystal gel obtained by gelling a gel material containing a liquid crystalline substance and a gelling agent for gelling the liquid crystalline substance, which constitutes the film. Provided is an optical film characterized in that liquid crystal molecules of a liquid crystalline substance are aligned in a predetermined direction, and a gelling agent forming the film is aligned in parallel or perpendicular to the alignment direction of the liquid crystal molecules. To be done. Further, according to the present invention, there is provided an optical film obtained by polymerizing the above optical film. Furthermore, according to the present invention, the optical film,
A polarizing film provided on the polarizing thin film is provided.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below. The optical film of the present invention, for example,
A film having some optical function such as excellent optical anisotropy and polarization separation function, which is, for example, a polarizing film such as LCD, a film that improves image quality such as viewing angle, brightness and color, a reflection film It is a film having functions that can be used for the above. The optical film of the present invention uses a liquid crystal gel obtained by gelling a gel material containing a liquid crystalline substance and a gelling agent that gels the liquid crystalline substance. In this liquid crystal gel, the fluidity of the liquid crystalline substance having fluidity disappears, and the gel material as a whole gels to show no fluidity, and exhibits optical anisotropy. The thickness of the optical film of the present invention is not particularly limited and may be appropriately selected depending on the application, desired function, type of gel material, etc., but is usually 0.5 μm to 1 mm, preferably 1 to It is 500 μm.

The gelling agent used for the gel material may be any one which can eliminate the fluidity of the originally fluid liquid crystalline substance and impart optical anisotropy to the obtained liquid crystalline gel. For example, a giant fibrous aggregate is formed by intermolecular interaction such as hydrogen bond, and the giant fibrous aggregate is bonded to each other by Van der Waals force to form a three-dimensional network structure. Examples thereof include compounds capable of incorporating the molecules of the above liquid crystalline substance into the structure to cause gelation. As the gelling agent, a gelling agent having a structural unit represented by formula (G) and / or an amide group, and further a gelling agent containing a linear alkyl group having 6 or more carbon atoms, preferably 10 to 20 carbon atoms Agents and the like. Plural constitutional units and / or amide groups represented by the formula (G) may be contained in the molecule of the gelling agent. The molecular weight of the gelling agent is not particularly limited, but preferably 2000 or less.

[0008]

[Chemical 13] In the formula (G), R ^G1 represents a branched alkyl group, preferably a branched alkyl group having 3 to 10 carbon atoms.

The gelling agent can be appropriately determined according to the liquid crystal substance described later, and examples thereof include compounds having the structures shown below. In the formula, R ^G2 , R
^G3 represents a linear or branched alkyl group having 3 to 20 carbon atoms, and n ^G and m ^G each represent an integer of 3 to 20.

[Chemical 14]

In the optical film of the present invention, the liquid crystalline material contained in the gel material is not particularly limited, but one having a refractive index anisotropy of at least 0.15 or more is preferable, and a larger one is preferable depending on the use. .

The liquid crystalline substance preferably contains at least one of the liquid crystalline substances represented by the formulas (1) to (6) and (8).

[Chemical 15]

In the formula (1), A ^{01 to} A ¹² each independently represent a hydrogen atom, a fluorine atom, or an alkyl group or an alkoxy group having 1 to 10 carbon atoms which may be substituted with a fluorine atom, At least one is an alkyl group or an alkoxy group having 1 to 10 carbon atoms which may be substituted with a fluorine atom. R ¹¹ and R ¹² are each independently a hydrogen atom, a fluorine atom, a cyano group, —SF ₅ , —NCS,
4-R ¹³ - shows the (O) q group - (cycloalkyl) group, 4-R ¹³ - (cycloalkenyl) group or a R ^14. However, R ¹³ represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms which may be substituted with a fluorine atom,
¹⁴ has 1 to 1 carbon atoms which may be substituted with a fluorine atom
2 straight-chain or branched alkyl group or C3-12
Is a straight-chain or branched alkenyl group. Further, q represents 0 or 1.

Specific examples of R ¹¹ and R ¹² include hydrogen atom; fluorine atom; methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, Decyl group, undecyl group,
An alkyl group such as a dodecyl group and a fluoroalkyl group in which these are substituted with a fluorine atom (for example, a trifluoromethyl group); a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentyloxy group, a hexyloxy group, an octyloxy group, Alkoxy groups such as nonyloxy group, decyloxy group, undecyloxy group, dodecyloxy group, and fluoroalkoxy groups in which these are substituted with fluorine atoms.
(For example, a methoxy group substituted with 1 to 3 fluorine atoms, an ethoxy group substituted with 1 to 5 fluorine atoms);
Methoxymethyl group, ethoxymethyl group, propoxymethyl group, butoxymethyl group, pentyloxymethyl group, hexyloxymethyl group, heptyloxymethyl group, octyloxymethyl group, nonyloxymethyl group, decyloxymethyl group, methoxyethyl group, Ethoxyethyl group,
Propoxyethyl group, butoxyethyl group, pentyloxyethyl group, hexyloxyethyl group, heptyloxyethyl group, octyloxyethyl group, nonyloxyethyl group, decyloxyethyl group, methoxypropyl group, ethoxypropyl group, propoxypropyl group, Butoxypropyl group, pentyloxypropyl group, hexyloxypropyl group, heptyloxypropyl group, octyloxypropyl group, nonyloxypropyl group, methoxybutyl group, ethoxybutyl group, propoxybutyl group, butoxybutyl group, pentyloxybutyl group, Hexyloxybutyl group, heptyloxybutyl group, octyloxybutyl group, methoxypentyl group, ethoxypentyl group, propoxypentyl group, butoxypentyl group, pentyloxypentyl group, Hexyl oxy pentyl group, an alkoxyalkyl group, and fluoroalkoxy group they have been substituted with fluorine atoms such as heptyloxy pentyl group; a 2-methylpropyl group, 2-methylbutyl group, 3-
Branched alkyl groups such as methylbutyl group and 3-methylpentyl group, and fluoro branched alkyl groups in which these are substituted with a fluorine atom; 2-methylpropyloxy group, 2-methylbutyloxy group, 3-methylbutyloxy group, Branched alkyloxy groups such as 3-methylpentyloxy group and fluoro-branched alkyloxy groups in which these are substituted with a fluorine atom; 4-methylcyclohexyl group, 4-ethylcyclohexyl group, 4-propylcyclohexyl group, 4-butyl Cyclohexyl group, 4-pentylcyclohexyl group,
4-hexylcyclohexyl group, 4-heptylcyclohexyl group, 4-octylcyclohexyl group, 4-nonylcyclohexyl group, 4-decylcyclohexyl group and the like 4
-Alkyl-cycloalkyl groups and 4-fluoroalkyl-cycloalkyl groups substituted with fluorine atoms; 4-alkyl-cycloalkenyl groups such as 4-propylcyclohexenyl group, 4-pentylcyclohexenyl group and the like; is 4-fluoroalkyl substituted with atoms - cycloalkenyl group; a cyano group; -SF _5; -
NCS etc. are mentioned.

Specific examples of the liquid crystalline substance represented by the formula (1) include compounds represented by the following structural formulas.
R ¹ and R ² in the structural formula can be appropriately selected from the specific examples corresponding to the above R ¹¹ and R ¹² .

[Chemical 16]

[0015]

[Chemical 17]

[0016]

[Chemical 18]

[0017]

[Chemical 19]

[0018]

[Chemical 20]

[0019]

[Chemical 21]

[0020]

[Chemical formula 22]

[0021]

[Chemical formula 23]

In the above formula (2), A ^{13 to} A ²⁴ each independently represent a hydrogen atom, a fluorine atom or an alkyl group having 1 to 10 carbon atoms. R ²¹ represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms which may be substituted with a fluorine atom. R ²² is R ²¹ , a hydrogen atom, a fluorine atom, a cyano group, —SF ₅ , —NCS, 4-R ¹³ — (cycloalkyl) group, 4-R ¹³ — (cycloalkenyl) group or R ¹⁴ —.
An (O) q group is shown. However, R ¹³ represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms which may be substituted by a fluorine atom, and R ¹⁴ represents a carbon atom which may be substituted by a fluorine atom. A straight-chain or branched alkyl group having 1 to 12 or a straight-chain or branched alkenyl group having 3 to 12 carbon atoms is shown. q represents 0 or 1. Further, m is 0 or 1.

As specific examples of R ²¹ and R ^{22 in} the formula (2), appropriate examples can be selected from those enumerated as specific examples of R ¹¹ and R ^{12 in} the above formula (1). it can.

Specific examples of the liquid crystalline substance represented by the formula (2) include compounds represented by the following structural formulas.
R ¹ and R ² in the structural formula can be appropriately selected from the specific examples corresponding to the specific examples appropriately selected as R ²¹ and R ²² .

[Chemical formula 24]

[0025]

[Chemical 25]

[0026]

[Chemical formula 26]

[0027]

[Chemical 27]

[0028]

[Chemical 28]

[0029]

[Chemical 29]

[0030]

[Chemical 30]

[0031]

[Chemical 31]

[0032]

[Chemical 32]

[0033]

[Chemical 33]

[0034]

[Chemical 34]

[0035]

[Chemical 35]

[0036]

[Chemical 36]

[0037]

[Chemical 37]

[0038]

[Chemical 38]

[0039]

[Chemical Formula 39]

In the above formula (3), A ^{25 to} A ²⁸ each independently represent a hydrogen atom, a fluorine atom, or an alkyl group or an alkoxy group having 1 to 10 carbon atoms which may be substituted with a fluorine atom. . P ³¹ and P ³² are independently the formula
A structure represented by formula (3a) or formula (3b) is shown, and at least one is a structure represented by formula (3a).

[0041]

[Chemical 40] Here, in the formulas (3a) and (3b), A ^{29 to} A ³⁸ are each independently a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 10 carbon atoms which may be substituted with a fluorine atom, or Represents an alkoxy group. R ³¹ and R ³² are each independently a hydrogen atom, a fluorine atom, a cyano group, or —S
_{F 5, -NCS, 4-R} 33 - ( cycloalkyl) group, 4
An R ^33- (cycloalkenyl) group or an R ^34- (O) q group is shown. However, R ³³ represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms which may be substituted with a fluorine atom. R ³⁴ represents a linear or branched alkyl group having 1 to 12 carbon atoms, or a linear or branched alkenyl group or alkynyl group having 3 to 12 carbon atoms, which may be substituted with a fluorine atom. q represents 0 or 1.

As specific examples of R ³¹ and R ^{32 in} the formula (3), those corresponding to those enumerated as the specific examples of R ¹¹ and R ^{12 in} the above formula (1) can be selected appropriately. it can.

Specific examples of the liquid crystalline substance represented by the formula (3) include compounds represented by the following structural formulas.
R ¹ and R ² in the structural formula can be appropriately selected from the specific examples corresponding to the specific examples appropriately selected as R ³¹ and R ³² .

[Chemical 41]

[0044]

[Chemical 42]

[0045]

[Chemical 43]

[0046]

[Chemical 44]

In the above formula (4), ring A, ring B, ring C and ring D
Are each independently 1,4-phenylene, 1,4-cyclohexylene, 1,4-cyclohexenylene, 4,1-
Cyclohexenylene, 2,5-cyclohexenylene,
5,2-cyclohexenylene, 3,6-cyclohexenylene, 6,3-cyclohexenylene, 2,5-pyrimidinediyl, 5,2-pyrimidinediyl, 2,5-pyridinediyl, 5,2-pyridine Diyl, 2,5-dioxanediyl, or 5,2-dioxanediyl,
The hydrogen atoms on ring A, ring B, ring C and ring D may be substituted with a fluorine atom or an alkyl group or an alkoxy group which may be substituted with a fluorine atom. R ⁴¹ and R ⁴² are each independently a hydrogen atom, a fluorine atom, a fluoromethyl group, a difluoromethyl group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group, a cyano group, and a carbon number of 1 to 12. Alkyl group, C3-C12 alkenyl group, C3-C3
An alkynyl group having 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms,
Alkenyloxy group having 3 to 12 carbon atoms, 3 to 12 carbon atoms
Is an alkynyloxy group, an alkoxyalkyl group having 2 to 16 carbon atoms, or an alkoxyalkenyl group having 3 to 16 carbon atoms. At least one methylene group in these alkyl groups, alkenyl groups or alkynyl groups may be substituted with an oxygen atom, a sulfur atom or a silicon atom, and may be linear or branched. Z ¹ , Z ² and Z ³ are each independently -COO-, -OCO-, -OCH _2- ,
-CH ₂ O-, alkylene group having 1 to 5 carbon atoms, 2 carbon atoms
To alkenylene group having 2 to 5 carbon atoms, alkynylene group having 2 to 5 carbon atoms or a single bond, and b ⁴ , c ⁴ and d ⁴ are independently 0 or 1 and never 0 at the same time.

Specific examples of R ⁴¹ and R ^{42 in} the formula (4) are, for example, hydrogen atom, fluorine atom, fluoromethyl group, difluoromethyl group, trifluoromethyl group, fluoromethoxy group, difluoromethoxy group and trifluoromethyl group. Fluoromethoxy group, cyano group, optionally substituted by a fluorine atom, methyl, ethyl, propyl, butyl, pentyl,
Hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, ethenyl, propenyl, butenyl,
Pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy, nonyloxy, decyloxy, undecyloxy,
Dodecyloxy, vinyloxy, propenyloxy, butenyloxy, pentenyloxy, hexynyloxy,
Heptenyloxy, octenyloxy, nonenyloxy, decenyloxy, propynyloxy, butynyloxy, pentynyloxy, hexynyloxy, heptynyloxy, octynyloxy, nonynyloxy, decynyloxy, undecynyloxy, dodecynyloxy, methoxymethyl, ethoxymethyl, propoxymethyl, butoxymethyl, pentyloxymethyl. , Hexyloxymethyl, heptyloxymethyl, octyloxymethyl,
Nonyloxymethyl, decyloxymethyl, methoxyethyl, ethoxyethyl, propoxyethyl, butoxyethyl, pentyloxyethyl, hexyloxyethyl,
Heptyloxyethyl, octyloxyethyl, nonyloxyethyl, decyloxyethyl, methoxypropyl, ethoxypropyl, propoxypropyl, butoxypropyl, pentyloxypropyl, hexyloxypropyl, heptyloxypropyl, octyloxypropyl, nonyloxypropyl, decyloxy Propyl,
Methoxybutyl, ethoxybutyl, propoxybutyl,
Butoxybutyl, pentyloxybutyl, hexyloxybutyl, heptyloxybutyl, octyloxybutyl, nonyloxybutyl, decyloxybutyl, methoxypentyl, ethoxypentyl, propoxypentyl,
Examples thereof include butoxypentyl, pentyloxypentyl, hexyloxypentyl, heptyloxypentyl, octyloxypentyl, nonyloxypentyl, decyloxypentyl and the like.

Specific examples of the liquid crystalline substance represented by the formula (4) include compounds represented by the following structural formulas.
R ⁵ and R ⁶ in the structural formula can be appropriately selected from the specific examples corresponding to R ⁴¹ and R ⁴² described above. Moreover, W in a structural formula shows a hydrogen atom or a fluorine atom, and X is an integer of 0-3. Further, ring H represents 1,4-cyclohexylene, and ring G may be substituted with a fluorine atom,
1,4-phenylene, 1,4-cyclohexylene, 1,
4-cyclohexenylene, 4,1-cyclohexenylene, 2,5-cyclohexenylene, 5,2-cyclohexenylene, 3,6-cyclohexenylene, 6,3-cyclohexenylene, 2,5- Pyrimidinediyl, 5,2-
Pyrimidinediyl, 2,5-pyridinediyl, 5,2-
Pyridinediyl, 2,5-dioxanediyl or 5,2
-Indicates dioxanediyl. As a preferred ring G,
1,4-cyclohexylene, 1,4-cyclohexenylene, 4,1-cyclohexenylene, 2,5-cyclohexenylene, 5,2-cyclohexenylene, 3,6-cyclohexenylene, 6,3 -Cyclohexenylene.

[0050]

[Chemical formula 45]

[0051]

[Chemical formula 46]

[0052]

[Chemical 47]

[0053]

[Chemical 48]

[0054]

[Chemical 49]

[0055]

[Chemical 50]

[0056]

[Chemical 51]

[0057]

[Chemical 52]

[0058]

[Chemical 53]

[0059]

[Chemical 54]

[0060]

[Chemical 55]

[0061]

[Chemical 56]

[0062]

[Chemical 57]

[0063]

[Chemical 58]

[0064]

[Chemical 59]

[0065]

[Chemical 60]

[0066]

[Chemical formula 61]

[0067]

[Chemical formula 62]

[0068]

[Chemical formula 63]

[0069]

[Chemical 64]

[0070]

[Chemical 65]

[0071]

[Chemical formula 66]

[0072]

[Chemical formula 67]

[0073]

[Chemical 68]

[0074]

[Chemical 69]

[0075]

[Chemical 70]

[0076]

[Chemical 71]

[0077]

[Chemical 72]

[0078]

[Chemical formula 73]

In the above formula (5), A ^{47 to} A ⁵⁸ each independently represent a hydrogen atom, a fluorine atom, or an alkyl group or an alkoxy group having 1 to 10 carbon atoms which may be substituted with a fluorine atom. . B ⁵¹ and B ⁵² each independently represent a hydrogen atom or a methyl group. p ⁵ , q ⁵ , r ⁵ , s ⁵ and t
⁵ is 0 or 1, respectively. m ⁵¹ and n ⁵¹ are each 0 to 14
, And n ⁵¹ is 0 when s ⁵ is 0, and m ⁵¹ is 0 when t ⁵ is 0. W ⁵¹ is a single bond, —CH ₂ CH ₂
-Or-C represents C-. Specific examples of the liquid crystal substance represented by the formula (5) include compounds represented by the following structural formulas. N and m in the structural formula can be appropriately selected from integers of 1 to 14.

[0080]

[Chemical 74]

[0081]

[Chemical 75]

[0082]

[Chemical 76]

[0083]

[Chemical 77]

[0084]

[Chemical 78]

[0085]

[Chemical 79]

[0086]

[Chemical 80]

In the above formula (6), A ^{59 to} A ⁶² each independently represent a hydrogen atom, a fluorine atom, or an alkyl group or an alkoxy group having 1 to 10 carbon atoms which may be substituted with a fluorine atom. . P ⁶¹ and P ⁶² are independently
It shows a structure represented by formula (6a) or formula (6b), and at least one is a structure represented by formula (6a).

[0088]

[Chemical 81] Here, in equation (6a) and equation (6b), A⁶³~ A⁷²Is
Independently of each other, hydrogen atom, fluorine atom, or fluorine atom
An alkyl having 1 to 10 carbon atoms which may be substituted with a child
Represents a group or an alkoxy group. In formula (6), R⁶¹And R
⁶²Are independently hydrogen atom, fluorine atom, cyano
Group, -SF_Five, -NCS, 4-R⁶³-(Cycloalkyl)
Group, 4-R⁶³-(Cycloalkenyl) group or R⁶⁴-(O) q
Indicates a group. However, R⁶³Is a hydrogen atom, straight-chain or branched
C1-C12 optionally substituted fluorine atoms
R is a group, R ⁶⁴Is a linear or branched fluorine atom
An alkyl group having 1 to 12 carbon atoms which may be substituted with
An alkenyl group having 3 to 12 carbon atoms or an alkenyl group having 3 to 12 carbon atoms
Indicates a quinyl group. q represents 0 or 1. Also, R⁶¹Over
And R⁶²Represents a group represented by the formula (7), at least one of which is
It is a group represented by the formula (7). Where R⁶¹And R⁶²Both
When one is a group represented by the formula (7), each group is the same.
It may be one or different.

[0089]

[Chemical formula 82] Here, in the formula (7), n ⁷¹ is 0 or 1, and m ⁷¹ is 1 to 2
Indicates an integer of 0. B ⁷¹ represents a hydrogen atom or a methyl group.

In the above formula (6), specific examples of R ⁶¹ and R ⁶² include, for example, hydrogen atom; fluorine atom; methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, Octyl group, nonyl group, decyl group, undecyl group, dodecyl group and other alkyl groups and fluoroalkyl groups in which these are substituted with a fluorine atom (for example, trifluoromethyl group); ethenyl group, propenyl group, butenyl group, pentenyl group, Alkenyl groups such as hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group and fluoroalkenyl groups in which these are substituted with a fluorine atom; propynyl group, butynyl group, pentynyl group, hexynyl group,
Alkynyl groups such as heptynyl group, octynyl group, nonynyl group, decynyl group and dodecynyl group and fluoroalkynyl groups in which these are substituted with a fluorine atom; methoxy group,
Alkoxy groups such as ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, octyloxy, nonyloxy, decyloxy, undecyloxy, dodecyloxy, and fluoroalkoxy substituted with fluorine atoms. A group (for example, a methoxy group substituted with 1 to 3 fluorine atoms, an ethoxy group substituted with 1 to 5 fluorine atoms); a vinyloxy group, a propenyloxy group, a butenyloxy group, a pentenyloxy group, a hexenyloxy group, Alkenyloxy groups such as heptenyloxy group, octenyloxy group, nonenyloxy group, decenyloxy group and the like, and fluoroalkenyloxy groups in which these are substituted with a fluorine atom; propionyloxy group, butynyloxy group, pentynyloxy group, hexynyloxy group, heptini Alkynyloxy groups such as oxy group, octynyloxy group, nonynyloxy group, decynyloxy group, undecynyloxy group, dodecynyloxy group and fluoroalkynyloxy groups in which these are fluorine-substituted; methoxymethyl group, ethoxymethyl group, propoxymethyl group, butoxymethyl group Group, pentyloxymethyl group, hexyloxymethyl group, heptyloxymethyl group, octyloxymethyl group, nonyloxymethyl group,
Decyloxymethyl group, methoxyethyl group, ethoxyethyl group, propoxyethyl group, butoxyethyl group, pentyloxyethyl group, hexyloxyethyl group, heptyloxyethyl group, octyloxyethyl group, nonyloxyethyl group, decyloxyethyl group , Methoxypropyl group, ethoxypropyl group, propoxypropyl group, butoxypropyl group, pentyloxypropyl group, hexyloxypropyl group, heptyloxypropyl group, octyloxypropyl group, nonyloxypropyl group, methoxybutyl group, ethoxybutyl group, Propoxybutyl group, butoxybutyl group, pentyloxybutyl group, hexyloxybutyl group, heptyloxybutyl group, octyloxybutyl group, methoxypentyl group, ethoxypentyl group, propoxy Pentyl group, Butokishipenchiru group,
Alkoxyalkyl groups such as pentyloxypentyl group, hexyloxypentyl group, heptyloxypentyl group and fluoroalkoxyalkyl groups in which these are substituted with fluorine atoms; 2-methylpropyl group, 2-methylbutyl group, 3-methylbutyl group, 3 -Branched alkyl groups such as methylpentyl group and fluoro-branched alkyl groups in which these are substituted with a fluorine atom; 2-methylpropyloxy group, 2-methylbutyloxy group, 3-methylbutyloxy group, 3-methylpentyl group Branched alkyloxy groups such as oxy groups and fluoro-branched alkyloxy groups in which these are substituted with a fluorine atom; 4-methylcyclohexyl group, 4
-Ethylcyclohexyl group, 4-propylcyclohexyl group, 4-butylcyclohexyl group, 4-pentylcyclohexyl group, 4-hexylcyclohexyl group, 4-heptylcyclohexyl group, 4-octylcyclohexyl group, 4-nonylcyclohexyl group, 4-decyl 4-alkyl-cycloalkyl groups such as cyclohexyl group and 4-fluoroalkyl-cycloalkyl groups in which these are substituted with a fluorine atom; 4-propylcyclohexenyl group, 4
4-alkyl-cycloalkenyl groups such as -pentylcyclohexenyl group and those substituted with fluorine atoms
-Fluoroalkyl-cycloalkenyl group; cyano group;
SF ₅ ; NCS; OCH ₂ OCOCHCH ₂ , OC ₂ H ₄ O
COCHCH ₂ , OC ₃ H ₆ OCOCHCH ₂ , OC ₄ H ₈ O
COCHCH ₂ , OC ₅ H ₁₀ OCOCHCH ₂ , OC ₆ H ₁₂
OCOCHCH ₂ , OC ₇ H ₁₄ OCOCHCH ₂ , OC ₈ H
₁₆ OCOCHCH ₂ , OC ₉ H ₁₈ OCOCHCH ₂ , OC
₁₀ H ₂₀ OCOCHCH ₂ ,; OCH ₂ OCOC (CH ₃ ) C
_{H 2, OC 2 H 4 OCOC} (CH 3) CH 2, OC 3 H 6 OCO
C (CH ₃ ) CH ₂ , OC ₄ H ₈ OCOC (CH ₃ ) CH ₂ , OC
₅ H ₁₀ OCOC (CH ₃ ) CH ₂ , OC ₆ H ₁₂ OCOC (C
_{H 3) CH 2, OC 7} H 14 OCOC (CH 3) CH 2, OC 8 H
_{16 OCOC (CH 3) CH 2} , OC 9 H 1 8 OCOC (CH 3) C
_{H 2, OC 10 H 20 OCOC} (CH 3) CH 2 and the like.

As a specific example of the liquid crystal substance represented by the formula (6),
Is a specific example of the liquid crystalline substance represented by the above formula (3).
And R¹And R²Above R⁶¹And R⁶²Example replacing the specific example
Etc. At this time, R⁶¹And R⁶²At least one of
One is OCH₂OCOCHCH₂, OC₂H_FourOCOCHC
H₂, OC₃H₆OCOCHCH₂, OC_FourH₈OCOCHC
H₂, OC_FiveH_TenOCOCHCH₂, OC₆H₁₂OCOCH
CH₂, OC₇H₁₄OCOCHCH₂, OC₈H₁₆OCOC
HCH₂, OC₉H₁₈OCOCHCH₂, OC_{1 0}H₂₀OC
OCHCH₂,; OCH₂OCOC (CH₃) CH₂, OC₂
H_FourOCOC (CH₃) CH₂, OC₃H₆OCOC (CH₃) C
H₂, OC_FourH₈OCOC (CH₃) CH₂, OC_FiveH_TenOCO
C (CH₃) CH₂, OC₆H₁₂OCOC (CH₃) CH₂, O
C₇H₁₄OCOC (CH₃) CH₂, OC₈H₁₆OCOC (C
H₃) CH₂, OC₉H₁₈OCOC (CH₃) CH₂, OC_TenH
₂₀OCOC (CH₃) CH₂,; OCH₂CHCH₂, OC₂
H _FourCHCH₂, OC₃H₆CHCH₂, OC_FourH₈CHC
H₂, OC_FiveH_TenCHCH₂, OC₆H₁₂CHCH₂, OC₇
H₁₄CHCH₂, OC₈H₁₆CHCH₂, OC₉H₁₈CHC
H₂, OC_TenH₂₀CHCH₂Etc.

In the above formula (8), ring A, ring B, ring C, ring D,
Z ¹ , Z ² and Z ³ have the same meanings as the corresponding symbols in formula (4). R ⁸¹ and R ⁸² are each independently a group of formulas (8-1) to
A group represented by formula (8-3), a hydrogen atom, a fluorine atom,
Fluoromethyl group, difluoromethyl group, trifluoromethyl group, fluoromethoxy group, difluoromethoxy group, trifluoromethoxy group, cyano group, carbon number 1 to 1
2 alkyl group, C 3-12 alkenyl group, C 3-12 alkynyl group, C 1-12 alkoxy group, C 3-12 alkenyloxy group, C 3
To a C12 alkynyloxy group, a C2-16 alkoxyalkyl group, or a C3-16 alkoxyalkenyl group. At least one methylene group in these alkyl groups, alkenyl groups or alkynyl groups may be substituted with an oxygen atom, a sulfur atom or a silicon atom, and may be linear or branched. However, at least one of R ⁸¹ and R ⁸² represents one of groups represented by formula (8-1) to formula (8-3), and both of formula (8-1) to formula (8)
In the case of the group represented by -3), each n ⁸ , m ⁸ and B ⁸ may be the same or different. Also, b ⁸ , c ⁸ and d ⁸ are
B ⁴ , c ⁴ and d ⁴ in the formula (4) are independently 0 or 1
, And never 0 at the same time.

[0093]

[Chemical 83] Here, in the formulas (8-1) to (8-3), n ⁸ represents 0 or 1, and m ⁸ represents an integer of 1 to 20. B ⁸ represents a hydrogen atom or a methyl group.

Specific examples of the liquid crystalline substance represented by the formula (8) are as follows. In the specific example of the liquid crystalline substance represented by the above formula (4), one of R ⁵ and R ⁶ is the above. Formula (8-1) ~
Specific examples in which the formula (8-3) is replaced are listed.

The liquid crystalline substances represented by the above formulas (1) to (6) and (8) can be synthesized by making use of ordinary organic synthesizing means.

In the present invention, the liquid crystalline substance used for the gelling material is not limited to the liquid crystalline substances represented by the above formulas (1) to (6) and (8). If it is 0.15 or more, a commercially available liquid crystal material may be used. Specifically, the product name "E- manufactured by Merck Japan Ltd.
7 "," E-9 "," E-63 "," E-100 ",
"ZLI-5049" and the like can be mentioned.

In the present invention, the proportion of the gelling agent in the gelling material is usually 0.01 to 30% by mass, preferably 0.1 to 30% by mass. On the other hand, the compounding ratio of the liquid crystal substance is, for example, 0 to 99.9 in the case of the liquid crystal substances represented by the above formulas (1), (2) and (4).
9% by mass, particularly preferably 10 to 90% by mass,
In the case of the liquid crystalline substance represented by
0 to 30 mass% is preferable. Also, the above formulas (5) and (6)
Alternatively, the compounding ratio in the case of containing the formula (8) is 10 to each.
99.99 mass% is preferable, and more preferably 30 to 9
It is 9.99 mass%. When the gelling material contains a monomer compound having at least one polymerizable functional group selected from the group consisting of methacrylate ester, acrylate ester, epoxy and vinyl ether other than the above liquid crystalline substance, the monomer compound The compounding ratio of is preferably 5 to 80% by mass, more preferably 10 to
It is 50% by mass.

The gelling material may further contain one or more chiral compounds as a twisting agent. The blending ratio of the chiral compound can be appropriately selected depending on the blending composition and the like, and is not particularly limited.
The chiral compound is not particularly limited, but preferably the following compounds can be exemplified. However, * in the example
Represents an asymmetric carbon.

[0099]

[Chemical 84]

The optical film of the present invention is a film comprising a liquid crystal gel obtained by gelling the above-mentioned gelling material containing a liquid crystalline substance and a gelling agent, and the liquid crystallinity which constitutes the film. The liquid crystal molecules of the substance are oriented in a predetermined direction,
In addition, it is preferable that the gelling agent forming the film is arranged in parallel or perpendicular to the alignment direction of the liquid crystal molecules. The method for aligning the liquid crystal molecules in the liquid crystal gel is not particularly limited, and a known alignment method, for example, a method in which an alignment film such as polyimide is rubbed, or an oblique vapor deposition film of SiO ₂ ,
A rubbing-treated glass substrate, polymer film, temperature gradient method, stretching or the like can be used. It is also possible to add other elements as needed. Specifically, for example, a gel material that becomes a liquid crystal gel is applied or sandwiched on a glass substrate or a resin film such as triacetyl cellulose, and the gel material is gelled into a film to obtain a desired optical property. A film is obtained. When the gel material contains a compound having a polymerizable group, a film-like liquid crystal gel is formed and then polymerized to obtain an optical film retaining the optical function of the liquid crystal gel. You can also In the above polymerization, a polymerization initiator or the like can be added if necessary. The polymerization method may be a known method, for example, heating, energy irradiation with ultraviolet rays, visible light, electron beams or the like, interference exposure using a laser, electron beam irradiation or the like. A polarized light source or a non-polarized light source may be used as the polymerization light source. The optical film of the present invention produced by the method as described above may be used after being peeled from the substrate or may be used without being peeled.

In the optical film of the present invention, a gelling agent is prepared by appropriately selecting a combination of a liquid crystalline substance and a gelling agent, and applying or sandwiching the obtained gelling material on an oriented substrate or the like. The fibers can be oriented in almost one direction. Thus, in the medium of the liquid crystalline substance originally having optical anisotropy, the gel fiber forms an anisotropic structure, which is different from the liquid crystalline substance alone or the optical anisotropy is emphasized. An optical film can be obtained. Even when a liquid crystal gel containing such oriented gel fibers is used, an optical film can be produced in the same manner as above. At this time, at least one of the substrates to be used needs to be treated so that the liquid crystal substance is aligned. The length and thickness of the gel fiber to be oriented, the degree of orientation, in addition to selecting the gelling agent to be used according to the purpose, the cooling rate during gel fiber growth and gelling temperature and the liquid crystal transition temperature of the liquid crystalline substance used It can be controlled by adjusting the difference or the like.
However, in order to orient the gel fibers, it is generally necessary that the gelation temperature be lower than the isotropic phase-liquid crystal phase transition temperature.

The polarizing film of the present invention can be obtained by a method of forming the above-mentioned optical film of the present invention on a polarizing thin film. As a forming method, a known method can be used.

[0103]

The present invention will be described in more detail below with reference to Examples and Comparative Examples, but the present invention is not limited to these. Example 1 1% by mass of a gelling agent represented by the formula (G-1) was added to the liquid crystalline substance represented by the formula (2-1) as the liquid crystalline substance represented by the formula (2), The temperature was raised to a temperature at which the liquid crystal became an isotropic phase, and the liquid crystal substance and the gelling agent were mixed. Then, this mixture was injected into a cell having a gap of about 50 μm, which was prepared by bonding glass substrates coated with a rubbing-treated polyimide alignment film. When the cell was observed with a microscope while slowly cooling, it transformed from an isotropic phase to a nematic phase at 87 ° C, and when further cooled, gelation occurred at 56 ° C, and an optical film in which fibers were formed parallel to the rubbing direction. It was confirmed that was obtained. Light is incident from the back of the obtained optical film, a polarizing film is installed on the front,
When this film was rotated, a change in brightness was observed in the transmitted light, and the polarization separation function was observed. With respect to the obtained optical film, light polarized parallel and perpendicular to the rubbing direction of the film was incident on the optical system shown in FIG. 1, and the degree of polarization was calculated from the respective transmittances. As a result, the polarization degree is 9
It was 0%, and it was found that an excellent polarization separation function was exhibited.

[0104]

[Chemical 85]

Example 2 The same gelling agent (G) as in Example 1 was added to the liquid crystalline substance represented by the formula (5-1) as the liquid crystalline substance represented by the above formula (5).
-1) was added at 1% by mass, the temperature was raised to a temperature at which the liquid crystal became an isotropic phase, and the gelling agent and the liquid crystalline material were mixed. This mixture was poured into a glass cell as in Example 1. When the cell was observed with a microscope while gradually cooling, it was found that at 80 ° C., it changed from an isotropic phase to a nematic phase and was further cooled.
It was confirmed that gelation occurred at around 0 ° C. and an optical film in which fibers were formed parallel to the rubbing direction was obtained. Light was incident from the back of the obtained optical film, a polarizing film was installed on the front, and this film was rotated,
A change in brightness was observed in the transmitted light, and it was found that it has a polarization separation function.

[0106]

[Chemical 86]

Example 3 The same gelling agent (G-) as in Example 1 was added to the liquid crystalline substance consisting of the nematic liquid crystal composition E-7 manufactured by Merck Japan.
1% by mass of 1) was added, the temperature was raised to a temperature at which the liquid crystal became an isotropic phase, and the gelling agent and the liquid crystalline material were mixed. This mixture was pasted with a glass substrate coated with a rubbing-treated polyimide alignment film to form a gap of about 10
It was injected into a μm cell. When the cell was observed with a microscope while slowly cooling, it transformed from an isotropic phase to a nematic phase at 55 ° C, and when further cooled, gelation occurred at 39 ° C, and an optical film in which fibers were formed parallel to the rubbing direction It was confirmed that was obtained. Light was made incident on the back surface of the obtained optical film, a polarizing film was placed on the front surface, and this film was rotated. As a result, a change in brightness was observed in the transmitted light. Further, in the same manner as in Example 1, The degree of polarization was determined to be 56%. From the above, it was found that the obtained optical film exhibited an excellent polarization separation function.

Example 4 64.5 parts by mass of the liquid crystalline substance represented by the formula (1-1) as the liquid crystalline substance represented by the formula (1), as the liquid crystalline substance represented by the formula (4) Liquid crystalline substance 3 represented by the formula (4-1)
3.5 parts by mass and the same gelling agent (G-1) 1 as in Example 1
Parts by mass were mixed. Then, when the mixture was gradually cooled, the liquid phase transitioned from an isotropic phase to a nematic phase at 78 ° C., and further gradually cooled, and gelation occurred at around 50 ° C., resulting in a liquid crystal gel that lost fluidity.

[0109]

[Chemical 87]

Next, a polyimide alignment film was applied on a calcium fluoride substrate, rubbed in one direction, and then laminated so that the rubbing directions were parallel to each other to prepare a cell.
The mixture obtained above and 1% by mass of the polymerization initiator Irgacure 651 (manufactured by Ciba Geigy) were injected into the obtained cell as a mixture. After injecting in the isotropic phase, the temperature was returned to room temperature while transitioning to the nematic phase or gel phase in the cell, and light irradiation (total irradiation energy; 5.5 J / cm ² ) was performed with a high pressure mercury lamp to give a liquid crystal gel polymer. The optical film of was obtained. The degree of polymerization was estimated to be 76% from the infrared absorption peak intensity of a double bond (C = C) of an acrylic group, and it was confirmed that a polymer of liquid crystal gel was obtained.
Next, when the obtained optical film was observed with a polarizing microscope, the texture of the liquid crystal gel did not show a large change as compared with that before the polymerization, and it was maintained even when heated to 200 ° C. Further, when light was made incident from the back surface of the obtained optical film, a polarizing film was installed on the front surface, and this film was rotated, a change in brightness and darkness was observed in the transmitted light, and a polarization separation function was observed. Further, the degree of polarization of the obtained optical film was determined by the same method as in Example 1, and it was 60%, and it was found that it showed an excellent polarization separation function. Such a polarized light separating function is also observed before the polymerization, and it was found that by polymerizing the liquid crystal gel, an optical film having an optically anisotropic function can be obtained in a wider temperature range.

[0111]

Since the optical film of the present invention uses a specific liquid crystal gel, it has a large interaction with light such as reflection, transmission, and scattering, and is represented by, for example, a brightness enhancement film and a polarization separation element. It is particularly useful as a constituent material for LCD optical members and the like.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an optical system for measuring the transmittance of an optical film manufactured in an example.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C09K 19/12 C09K 19/12 19/14 19/14 19/18 19/18 19/20 19/20 19 / 30 19/30 19/34 19/34 19/54 19/54 Z G02F 1/13 500 G02F 1/13 500 1/1335 510 1/1335 510 // C08L 49:00 C08L 49:00 (72) Invention Person Takashi Kato 1-7-1-502 Tsuchihashi, Miyamae-ku, Kawasaki-shi, Kanagawa 172 (72) Inventor Kenji Ei 1918-16, Furusato, Ueda-shi, Nagano (72) Inventor, Rindai Mizoshita 1-10, Horifune, Kita-ku, Tokyo 12-202 F term (reference) 2H049 BA02 BA05 BA42 BC04 BC05 BC09 2H091 FA08X FA08Z FA37X FB02 FD06 GA13 HA11 LA19 LA20 4F071 AA33 AA38 AA39 AF35 AG02 AH19 BB01 BB12 BC01 4H027 BA11 BD07 BD12 CE02 CE03 407

Claims (10)

[Claims] 1. An optical film comprising a liquid crystal gel obtained by gelling a gel material containing a liquid crystalline substance and a gelling agent for gelling the liquid crystalline substance. 2. A film comprising a liquid crystal gel obtained by gelling a gel material containing a liquid crystalline substance and a gelling agent for gelling the liquid crystalline substance, the liquid crystalline substance constituting the film. An optical film, wherein liquid crystal molecules of a substance are aligned in a predetermined direction, and a gelling agent which constitutes the film is arranged in parallel or perpendicular to the alignment direction of the liquid crystal molecules. 3. An optical film obtained by polymerizing the optical film according to claim 1. 4. The gelling agent has a structural unit represented by formula (G) and / or an amide group.
The optical film according to any one of 1 to 3. [Chemical 1] (In the formula (G), R ^G1 represents a branched alkyl group.) 5. The optical film according to claim 4, wherein the gelling agent has at least one linear alkyl group having 10 or more carbon atoms. 6. The optical film according to claim 1, wherein the liquid crystal substance is a liquid crystal substance having a refractive index anisotropy of 0.15 or more. 7. A liquid crystal substance represented by formulas (1) to (4)
At least one liquid crystalline substance
The optical film according to any one of claims 1 to 6. [Chemical 2] (In formula (1), A⁰¹~ A¹²Are each independently a hydrogen atom,
Fluorine atom or charcoal optionally substituted with fluorine atom
Indicates an alkyl or alkoxy group with a prime number of 1-10
However, at least one may be substituted with a fluorine atom.
Alkyl group or alkoxy group having 1 to 10 carbon atoms
Is. R¹¹And R¹²Are each independently a hydrogen atom,
Fluorine atom, cyano group, -SF_Five, -NCS, 4-R¹³−
(Cycloalkyl) group, 4-R¹³-(Cycloalkenyl) group
Or R¹⁴Represents an-(O) q group (provided that R is ¹³Is a hydrogen atom, or
Is a C1-12 optionally substituted fluorine atom.
R represents a linear or branched alkyl group, R¹⁴Is Fluorogen
A straight chain having 1 to 12 carbon atoms, which may be substituted with a child
A branched alkyl group or a straight chain having 3 to 12 carbon atoms
Represents a branched alkenyl group. q represents 0 or 1.) ) [Chemical 3] (In formula (2), A¹³~ A^{twenty four}Are each independently a hydrogen atom,
A fluorine atom or an alkyl group having 1 to 10 carbon atoms is shown. R
^{twenty one}Is carbon that may be substituted with hydrogen atom or fluorine atom
The straight-chain or branched alkyl groups of the formulas 1 to 12 are shown. R
^{twenty two}Is R^{twenty one}, Hydrogen atom, fluorine atom, cyano group, -SF
_Five, -NCS, 4-R¹³-(Cycloalkyl) group, 4-R
¹³-(Cycloalkenyl) group or R¹⁴Indicates a-(O) q group
(However, R¹³Is replaced by a hydrogen atom or a fluorine atom
Alky, which may be linear or branched, having 1 to 12 carbon atoms
R group¹⁴May be substituted with a fluorine atom
A linear or branched alkyl group having 1 to 12 carbon atoms or
Is a linear or branched alkenyl group having 3 to 12 carbon atoms.
Show. q represents 0 or 1.) Also, m is 0 or 1.
It ) [Chemical 4] (In formula (3), A^{twenty five}~ A²⁸Are each independently a hydrogen atom,
Fluorine atom or charcoal optionally substituted with fluorine atom
Indicates an alkyl or alkoxy group with a prime number of 1-10
You P³¹And P³²Are independently formula (3a) or formula
(3b) shows a structure represented by the formula (3b)
It is the structure shown in a). [Chemical 5] (Here, in the formula (3a) and the formula (3b), A²⁹~ A³⁸
Are each independently a hydrogen atom, a fluorine atom, or a fluorine atom.
An alkyl group having 1 to 10 carbon atoms, which may be substituted with an atom,
Represents an alkyl group or an alkoxy group). R³¹And R³²Haso
Each independently, hydrogen atom, fluorine atom, cyano group, -S
F_Five, -NCS, 4-R³³-(Cycloalkyl) group, 4-
R³³-(Cycloalkenyl) group or R³⁴Indicates a-(O) q group
(However, R³³Is replaced by a hydrogen atom or a fluorine atom
Alky, which may be linear or branched, having 1 to 12 carbon atoms
Represents a radical. R³⁴May be substituted with a fluorine atom
A linear or branched alkyl group having 1 to 12 carbon atoms,
Or a straight or branched alkenyl group having 3 to 12 carbon atoms or
Represents an alkynyl group. q represents 0 or 1. )) [Chemical 6] (In formula (4), ring A, ring B, ring C, and ring D are independent of each other.
1,4-phenylene, 1,4-cyclohexylene,
1,4-cyclohexenylene, 4,1-cyclohexeni
Ren, 2,5-cyclohexenylene, 5,2-cyclohexene
Xenylene, 3,6-cyclohexenylene, 6,3-silane
Clohexenylene, 2,5-pyrimidinediyl, 5,2
-Pyrimidinediyl, 2,5-pyridinediyl, 5,2
-Pyridinediyl, 2,5-dioxanediyl, young
Represents 5,2-dioxanediyl, and is ring A, ring B, or ring C
And a hydrogen atom on ring D is a fluorine atom or a fluorine atom.
An alkyl group or an alkoxy, which may be substituted with
It may be substituted with a silyl group. R⁴¹And R⁴²Are each
Independently, hydrogen atom, fluorine atom, fluoromethyl group, di
Fluoromethyl group, trifluoromethyl group, fluorome
Toxy group, difluoromethoxy group, trifluoromethoxy group
Si group, cyano group, alkyl group having 1 to 12 carbon atoms, carbon number
3-12 alkenyl group, alkynyl having 3-12 carbon atoms
Group, an alkoxy group having 1 to 12 carbon atoms, an alkoxy group having 3 to 12 carbon atoms
Alkenyloxy group, alkynyloxy having 3 to 12 carbon atoms
Si group, C2-16 alkoxyalkyl group, young
Represents an alkoxyalkenyl group having 3 to 16 carbon atoms. This
In these alkyl, alkenyl or alkynyl groups
At least one methylene group is an oxygen atom, a sulfur source
Child, may be substituted with a silicon atom, and may be linear or branched.
You can use it here. Z¹, Z²And Z³Are independent of each other,
COO-, -OCO-, -OCH₂-, -CH₂O-, charcoal
Alkylene groups having 1 to 5 primes and alkeniles having 2 to 5 carbons
Group, an alkynylene group having 2 to 5 carbon atoms or a single bond
Show, b^Four, C^FourAnd d^FourAre independently 0 or 1
, And never become 0 at the same time. ) 8. The gel material comprises formula (5), formula (6) and formula.
The optical film according to any one of claims 1 to 7, comprising at least one kind of liquid crystal substance represented by (8). [Chemical 7] (In formula (5), A ^{47 to} A ⁵⁸ are each independently a hydrogen atom,
A fluorine atom or an alkyl group or an alkoxy group having 1 to 10 carbon atoms which may be substituted with a fluorine atom is shown. B ⁵¹ and B ⁵² each independently represent a hydrogen atom or a methyl group. p ⁵ , q ⁵ , r ⁵ , s ^5, and t ⁵ are 0 or 1, respectively. m ⁵¹ and n ⁵¹ are each an integer of 0 to 14, but when s ⁵ is 0, n ⁵¹ is 0, and when t ⁵ is 0, m ⁵¹
Is 0. W ⁵¹ is a single bond, —CH ₂ CH ₂ — or —C≡.
Represents C-. ) [Chemical 8] (In formula (6), A ^{59 to} A ⁶² are each independently a hydrogen atom,
A fluorine atom or an alkyl group or an alkoxy group having 1 to 10 carbon atoms which may be substituted with a fluorine atom is shown. P ⁶¹ and P ⁶² are each independently a formula (6a) or a formula
(6b) has the structure represented by the formula (6)
It is the structure shown in a). [Chemical 9] (Here, in the formula (6a) and the formula (6b), A ^{63 to} A ⁷²
Each independently represents a hydrogen atom, a fluorine atom, or an alkyl group or an alkoxy group having 1 to 10 carbon atoms which may be substituted with a fluorine atom). R ⁶¹ and R ⁶² are each independently a hydrogen atom, a fluorine atom, a cyano group, or —S
_{F 5, -NCS, 4-R} 63 - ( cycloalkyl) group, 4
R ^63- (cycloalkenyl) group, R ^64- (O) q group (provided that
R ⁶³ represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms which may be substituted with a fluorine atom,
R ⁶⁴ has 1 to 1 carbon atoms which may be substituted with a fluorine atom.
2 is a linear or branched alkyl group having 2 to 3 carbon atoms, an alkenyl group having 3 to 12 carbon atoms, or an alkynyl group having 3 to 12 carbon atoms. q represents 0 or 1, or represents a group represented by the formula (7), and at least one of R ⁶¹ and R ⁶² is a group represented by the formula (7) (wherein R ⁶¹ and R ⁶² Both are formula (7)
In the case of the groups represented by, the respective groups may be the same or different). [Chemical 10] (Here, in the formula (7), n ⁷¹ is 0 or 1, and m ⁷¹ is 1
Indicates an integer of -20. B ^{7 1} is hydrogen or methyl. ) [Chemical 11] (In the formula (8), ring A, ring B, ring C, ring D, Z ¹ , Z ² and Z ³
Represents the same meaning as the corresponding symbol in formula (4). R ⁸¹ and R ⁸² each independently represent a group represented by formula (8-1) to formula (8-3), or a hydrogen atom, a fluorine atom, a fluoromethyl group, a difluoromethyl group, a trifluoromethyl group, a fluoro group. Methoxy group, difluoromethoxy group, trifluoromethoxy group, cyano group, alkyl group having 1 to 12 carbon atoms,
Alkenyl group having 3 to 12 carbon atoms, alkynyl group having 3 to 12 carbon atoms, alkoxy group having 1 to 12 carbon atoms, and 3 to carbon atoms
12 alkenyloxy groups, C3-12 alkynyloxy groups, C2-16 alkoxyalkyl groups,
Alternatively, it represents an alkoxyalkenyl group having 3 to 16 carbon atoms. At least one methylene group in these alkyl groups, alkenyl groups or alkynyl groups may be substituted with an oxygen atom, a sulfur atom or a silicon atom, and may be either linear or branched (provided that R ⁸¹ and R ^At least one of ⁸² represents any of the groups represented by formula (8-1) to formula (8-3), and both are groups represented by formula (8-1) to formula (8-3). In the case of, each n ⁸ , m ⁸ and B ⁸ may be the same or different). Further, b ⁸ , c ⁸ and d ⁸ are independently 0 or 1 and never 0 at the same time. ) [Chemical 12] (Wherein, in the formula (8-1) to Formula (8-3), n ⁸ is 0 or 1, m ⁸ is .B ⁸ represents an integer of 1 to 20 represents a hydrogen atom or a methyl group.)) 9. The gel material comprises formula (5), formula (6) and formula.
A monomer compound having at least one polymerizable functional group selected from the group consisting of other methacrylate ester, acrylate ester, epoxy and vinyl ether excluding the liquid crystalline substance represented by (8). The optical film according to any one of claims 1 to 8. 10. A polarizing film comprising the optical film according to claim 1 on a polarizing thin film.