Liquid crystal composition, light absorption anisotropic film, laminate, image display device, and polymer

Abstract

The present invention addresses the problem of providing: a liquid crystal composition capable of forming a light absorption anisotropic film in which repelling is suppressed during the formation of the light absorption anisotropic film and the occurrence of alignment defects is suppressed; a light absorption anisotropic film; a laminate; an image display device; and a polymer. A liquid crystal composition according to the present invention includes a liquid crystal compound, a dichroic substance, and a polymer having a repeating unit A including a structure represented by formula (A). In formula (A), RA1 and RA2 each independently represent a hydrogen atom or an alkyl group, RA3 represents a hydrogen atom, a halogen atom or a substituent, X represents a substituent comprising one or more structures represented by formula (a). In formula (1), * represents a bonding position, Ra1, Ra2, and Ra3 each independently represent an alkyl group, an alkenyl group, an aryl group or an alkylene aryl group which may have a substituent.

Description

Liquid crystal composition, optically absorbing anisotropic film, laminate, image display device and polymer

[0001] The present invention relates to a liquid crystal composition, an optically absorptive anisotropic film, a laminate, an image display device, and a polymer.

[0002] Optical films such as optical compensation sheets and retardation films are used in various display devices from the viewpoints of eliminating image coloration and controlling the viewing angle.

[0003] For example, Patent Document 1 describes that a composition for forming a retardation layer included in a retardation film "comprises a cured product of a composition for forming a retardation layer, the composition including a liquid crystal compound, a surfactant, and a solvent, and the surfactant is a polyether-modified silicone having a repeating unit represented by the following general formula (I)" (Claim 1 of Patent Document 1).

[0004] Japanese Patent Application Laid-Open No. 2016-095421

[0005] Optically absorptive anisotropic films containing a liquid crystal compound and a dichroic material are known as optical films used in display devices. The present inventors have investigated a liquid crystal composition containing a polyether-modified silicone, a liquid crystal compound, and a dichroic material as described in Patent Document 1, and have found that repelling occurs during the formation of the optically absorptive anisotropic film and that alignment defects occur in the formed optically absorptive anisotropic film.

[0006] Therefore, an object of the present invention is to provide a liquid crystal composition, an optically absorptive anisotropic film, a laminate, an image display device, and a polymer that can form an optically absorptive anisotropic film in which repelling is suppressed during formation of the film and the occurrence of alignment defects is suppressed.

[0007] As a result of intensive research aimed at solving the above-mentioned problems, the present inventors have found that by blending a specific polymer into a liquid crystal composition used to form an optically absorptive anisotropic film, it is possible to form an optically absorptive anisotropic film in which repelling during the formation of the film and the occurrence of alignment defects are suppressed, and have thus completed the present invention. That is, the present inventors have found that the above-mentioned problems can be solved by the following configuration.

[0008] [1] A liquid crystal composition comprising a liquid crystal compound, a dichroic substance, and a polymer having a repeating unit A containing a structure represented by formula (A) described below. Ａ１ and R Ａ２ R each independently represents a hydrogen atom or an alkyl group. Ａ３ represents a hydrogen atom, a halogen atom, or a substituent. X represents a substituent containing one or more structures represented by the formula (a) described below. In formula (a), * represents a bonding position. R ａ１ , R ａ２ and R ａ３ [2] The liquid crystal composition according to [1], wherein the polymer further comprises a repeating unit B represented by formula (B) described below. Ｂ１ , R Ｂ２ and R Ｂ３ R each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｂ４ and R Ｂ５ R each independently represents a hydrogen atom or a substituent. Ｂ４ and R Ｂ５ is a substituent, R Ｂ４ and R Ｂ５ may be linked to form a ring. [3] In the above formula (B), R Ｂ４ and R Ｂ５ [4] The liquid crystal composition according to [2], wherein the total molecular weight of R Ｂ４ and R Ｂ５ [5] The liquid crystal composition according to any one of [1] to [4], wherein the polymer further comprises a repeating unit D represented by formula (D) described below. Ｄ１ , R Ｄ２ and R Ｄ３ each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｄ１ represents a single bond, —COO— or —CO—.Ｄ１ represents a divalent hydrocarbon group having 1 to 20 carbon atoms. However, -CH ２ -, one or two or more non-adjacent -CH ２ Each - may independently be substituted with -O-, -S-, -NH- or -N(Q)-, and Q represents a substituent. Ｄ２ and L Ｄ３ each independently represents a single bond or a divalent linking group. Ｄ represents a divalent linking group containing a mesogen group. D represents a hydrogen-bonding group composed of a hydrogen atom and a nonmetallic atom of Groups 14 to 16. However, the nonmetallic atom may have a substituent. n represents an integer of 1 to 3. When n is 2 or 3, multiple L Ｄ２ may be the same or different, and a plurality of Cy Ｄ [6] In the above formula (D), L Ｄ３ represents a single bond, and D represents -COOH or -NHCOR ２ or -CONHR ３ The liquid crystal composition according to [5], wherein R ２ and R ３ each independently represents an alkyl group or an alkenyl group having 1 to 10 carbon atoms, provided that —CH ２ -, one or two or more non-adjacent -CH ２ - may be substituted with -O-. [7] In the above formula (D), L Ｄ３ represents a single bond, and D is -NHCOR ４ The liquid crystal composition according to [5] or [6], wherein R ４ represents an alkyl group or an alkenyl group having 1 to 3 carbon atoms, provided that —CH ２ -, one or two or more non-adjacent -CH ２- may be substituted by -O-. [8] The liquid crystal composition according to any one of [5] to [7], wherein in formula (D), n is 1 or 2. [9] The liquid crystal composition according to any one of [1] to [8], wherein the repeating unit A is a repeating unit A-1 represented by formula (A-1) described below. In formula (A-1), R Ａ１ and R Ａ２ R each independently represents a hydrogen atom or an alkyl group. Ａ３ represents a hydrogen atom, a halogen atom or a substituent. Ａ１ represents a single bond, —O—, or —NR Ｚ - where R Ｚ represents a hydrogen atom or a substituent. Ａ２ represents a single bond or a linking group having a valence of m+1, and m represents an integer of 1 or more. ａ１ , R ａ２ and R ａ３ each independently represents an alkyl group, an alkenyl group, an aryl group, or an alkylenearyl group, which may have a substituent. When m is an integer of 2 or more, a plurality of R ａ１ may be the same or different, and multiple R ａ２ may be the same or different, and multiple R ａ３ may be the same or different.

[10] The liquid crystal composition according to [9], wherein in formula (A-1), m is an integer of 2 or more.

[11] The liquid crystal composition according to any one of [1] to

[10] , wherein the polymer has a repeating unit A-1 represented by formula (A-1) described later, a repeating unit B represented by formula (B) described later, and a repeating unit D represented by formula (D) described later. In formula (A-1), R Ａ１ and R Ａ２ R each independently represents a hydrogen atom or an alkyl group. Ａ３ represents a hydrogen atom, a halogen atom or a substituent. Ａ１ represents a single bond, —O—, or —NR Ｚ - where R Ｚ represents a hydrogen atom or a substituent. Ａ２ represents a single bond or a linking group having a valence of m+1, and m represents an integer of 1 or more.ａ１ , R ａ２ and R ａ３ each independently represents an alkyl group, an alkenyl group, an aryl group, or an alkylenearyl group, which may have a substituent. When m is an integer of 2 or more, a plurality of R ａ１ may be the same or different, and multiple R ａ２ may be the same or different, and multiple R ａ３ may be the same or different. Ｂ１ , R Ｂ２ and R Ｂ３ R each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｂ４ and R Ｂ５ R each independently represents a hydrogen atom or a substituent. Ｂ４ and R Ｂ５ is a substituent, R Ｂ４ and R Ｂ５ may be linked to form a ring. Ｄ１ , R Ｄ２ and R Ｄ３ each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｄ１ represents a single bond, —COO—, or —CO—. Ｄ１ represents a divalent hydrocarbon group having 1 to 20 carbon atoms. However, -CH ２ -, one or two or more non-adjacent -CH ２ Each - may be independently substituted with -O-, -S-, -NH-, or -N(Q)-, and Q represents a substituent. Ｄ２ and L Ｄ３ each independently represents a single bond or a divalent linking group. Ｄ represents a divalent linking group containing a mesogen group. D represents a hydrogen-bonding group composed of a hydrogen atom and a nonmetallic atom of Groups 14 to 16. However, the nonmetallic atom may have a substituent. n represents an integer of 1 to 3. When n is 2 or 3, multiple L Ｄ２may be the same or different, and a plurality of Cy Ｄ may be the same or different.

[12] The liquid crystal composition according to any one of [1] to

[11] , wherein the mass ratio of the content of the polymer to the content of the dichroic substance is 0.0007 to 0.6.

[13] The liquid crystal composition according to any one of [1] to

[12] , wherein the liquid crystal compound comprises a polymer liquid crystal compound.

[14] The liquid crystal composition according to

[13] , wherein the liquid crystal compound further comprises a low-molecular-weight liquid crystal compound.

[15] An optically absorptive anisotropic film obtained using the liquid crystal composition according to any one of [1] to

[14] .

[16] The optically absorptive anisotropic film according to

[15] , wherein the alignment state of the liquid crystal compound and the dichroic substance contained in the optically absorptive anisotropic film is fixed, and the angle θ between the central axis of transmittance of the optically absorptive anisotropic film and the normal direction to the surface of the optically absorptive anisotropic film is more than 45° and not more than 90°.

[17] A laminate comprising the optically absorptive anisotropic film according to

[15] or

[16] , and a λ / 4 plate.

[18] An image display device comprising the optically absorptive anisotropic film according to

[15] or

[16] and a display element.

[19] A polymer comprising a repeating unit A-1 represented by formula (A-1) described later, a repeating unit B represented by formula (B) described later, and a repeating unit D represented by formula (D) described later. In formula (A-1), R Ａ１ and R Ａ２ R each independently represents a hydrogen atom or an alkyl group. Ａ３ represents a hydrogen atom, a halogen atom or a substituent. Ａ１ represents a single bond, —O—, or —NR Ｚ - where R Ｚ represents a hydrogen atom or a substituent. Ａ２ represents a single bond or a linking group having a valence of m+1, and m represents an integer of 1 or more. ａ１ , R ａ２ and R ａ３ each independently represents an alkyl group, an alkenyl group, an aryl group, or an alkylenearyl group, which may have a substituent. When m is an integer of 2 or more, a plurality of R ａ１ may be the same or different, and multiple Rａ２ may be the same or different, and multiple R ａ３ may be the same or different. Ｂ１ , R Ｂ２ and R Ｂ３ R each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｂ４ and R Ｂ５ R each independently represents a hydrogen atom or a substituent. Ｂ４ and R Ｂ５ is a substituent, R Ｂ４ and R Ｂ５ may be linked to form a ring. Ｄ１ , R Ｄ２ and R Ｄ３ each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｄ１ represents a single bond, —COO—, or —CO—. Ｄ１ represents a divalent hydrocarbon group having 1 to 20 carbon atoms. However, -CH ２ -, one or two or more non-adjacent -CH ２ Each - may be independently substituted with -O-, -S-, -NH-, or -N(Q)-, and Q represents a substituent. Ｄ２ and L Ｄ３ each independently represents a single bond or a divalent linking group. Ｄ represents a divalent linking group containing a mesogen group. D represents a hydrogen-bonding group composed of a hydrogen atom and a nonmetallic atom of Groups 14 to 16. However, the nonmetallic atom may have a substituent. n represents an integer of 1 to 3. When n is 2 or 3, multiple L Ｄ２ may be the same or different, and a plurality of Cy Ｄ may be the same or different.

[0009] According to the present invention, it is possible to provide a liquid crystal composition, an optically absorptive anisotropic film, a laminate, an image display device, and a polymer that can form an optically absorptive anisotropic film in which repelling is suppressed during formation of the film and the occurrence of alignment defects is suppressed.

[0010] 1 is a side view schematically showing an embodiment of a virtual reality display device that is an example of a display device of the present invention.

[0011] The present invention will be described in detail below. The following description of the constituent elements may be based on a representative embodiment of the present invention, but the present invention is not limited to such an embodiment. In this specification, a numerical range expressed using "to" means a range that includes the numerical values ​​before and after "to" as the upper and lower limits. In the numerical ranges described in stages in this specification, the upper or lower limit described in a certain numerical range may be replaced with the upper or lower limit of another numerical range described in stages. In addition, in the numerical ranges described in this specification, the upper or lower limit described in a certain numerical range may be replaced with a value shown in the Examples. Furthermore, in this specification, each component may be a single substance corresponding to the component, or two or more substances may be used in combination. Here, when two or more substances are used in combination for each component, the content of that component refers to the total content of the substances used in combination, unless otherwise specified. Furthermore, in this specification, "(meth)acrylate" is a notation representing "acrylate" or "methacrylate", "(meth)acrylic" is a notation representing "acrylic" or "methacrylic", "(meth)acryloyl" is a notation representing "acryloyl" or "methacryloyl", and "(meth)acrylic acid" is a notation representing "acrylic acid" or "methacrylic acid". Furthermore, the bonding direction of the divalent group represented in this specification is not limited unless otherwise specified. For example, when Y in a compound represented by the formula "X-Y-Z" is -C(O)-O-, Y may be -C(O)-O- or may be -O-C(O)-. Furthermore, the above compound may be "X-C(O)-O-Z" or "X-O-C(O)-Z".

[0012] In this specification, "orthogonal" and "parallel" with respect to angles mean a range of ±10° of the exact angle, and "same" and "different" with respect to angles can be determined based on whether the difference is less than 5°. In this specification, "visible light" refers to 380 to 780 nm. In this specification, the measurement wavelength is 550 nm unless otherwise specified.

[0013] In this specification, the term "slow axis" refers to the direction in which the refractive index is maximum in the plane. The slow axis of an optically anisotropic layer refers to the slow axis of the entire optically anisotropic layer.

[0014] In this specification, "Re(λ)" and "Rth(λ)" represent the in-plane retardation and the thickness direction retardation at a wavelength λ, respectively. Here, the in-plane retardation and the thickness direction retardation values ​​are values ​​measured using an AxoScan OPMF-1 (manufactured by OptoScience) with light of the measurement wavelength. Specifically, by inputting the average refractive index ((nx+ny+nz) / 3) and the film thickness (d(μm)) into the AxoScan OPMF-1, the following slow axis direction (°) Re(λ)=R0(λ) Rth(λ)=((nx+ny) / 2-nz)×d is calculated. Note that R0(λ) is displayed as a numerical value calculated by the AxoScan OPMF-1, but it means Re(λ).

[0015] [Substituent W] The substituent W used in this specification represents the following group. Examples of the substituent W include a halogen atom, an alkyl group having 1 to 20 carbon atoms, a halogenated alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 1 to 20 carbon atoms, an alkylcarbonyl group having 1 to 10 carbon atoms, an alkyloxycarbonyl group having 1 to 10 carbon atoms, an alkylcarbonyloxy group having 1 to 10 carbon atoms, an alkylamino group having 1 to 10 carbon atoms, an alkylaminocarbonyl group, an alkoxy group having 1 to 20 carbon atoms, an alkenyl group having 1 to 20 carbon atoms, an alkynyl group having 1 to 20 carbon atoms, an aryl group having 1 to 20 carbon atoms, a heterocyclic group (which may also be referred to as a heterocyclic group), a cyano group, a hydroxy group, a nitro group, a carboxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an alkoxycarbonyloxy group, an aryl Oxycarbonyloxy group, amino group (including anilino group), ammonio group, acylamino group, aminocarbonylamino group, alkoxycarbonylamino group, aryloxycarbonylamino group, sulfamoylamino group, alkyl or arylsulfonylamino group, mercapto group, alkylthio group, arylthio group, heterocyclic thio group, sulfamoyl group, sulfo group, alkyl or arylsulfinyl group, alkyl or arylsulfonyl group, acyl group, aryloxycarbonyl group, alkoxycarbonyl group, carbamoyl group, aryl or heterocyclic azo group, imido group, phosphino group, phosphinyl group, phosphinyloxy group, phosphinylamino group, phosphono group, silyl group, hydrazino group, ureido group, boronic acid group (-B(OH) ２ ), phosphato group (—OPO(OH) ２ ), sulfato group (—OSO ３ H), and other known substituents. Details of the substituents are described in paragraph

[0023] of JP-A-2007-234651. The substituent W may also be a group represented by the following formula (W1):

[0016]

[0017] In formula (W1), LW represents a single bond or a divalent linking group, SPW represents a divalent spacer group, Q represents a terminal group, and * represents a bonding position.

[0018] The divalent linking group represented by LW includes —O—, —Si(CH ３ ) ２ -, -(Si(CH ３ ) ２ O) ｇ -(g represents an integer of 1 to 10), -N(Z)-, -C(Z)=C(Z １ )-, -C(Z)=N-, -C(O)-, -C(O)O-, -O-C(O)O-, -C(O)N(Z)-, -C(Z)=C(Z １ )-C(O)O-, -C(Z)=N-, -C(Z)=C(Z １ )-C(O)N(Z ２ )-,-C(Z)=C(Z １ )-C(O)-S-, -C(Z)=N-N=C(Z １ )-(Z, Z １ and Z ２ each independently represents hydrogen, an alkyl group having 1 to 4 carbon atoms, a cycloalkyl group, an aryl group, a cyano group, or a halogen atom. ), -C≡C-, -N=N-, -S-, -S(O)-, -S(O)(O)-, -(O)S(O)O-, -O(O)S(O)O-, and -SC(O)-. LW may be a group combining two or more of these groups (hereinafter also abbreviated as "L-C").

[0019] The divalent spacer group represented by SPW includes a linear, branched, or cyclic alkylene group having 1 to 50 carbon atoms, or a heterocyclic group having 1 to 20 carbon atoms. The carbon atoms of the alkylene group and heterocyclic group may be —O—, —Si(CH ３ ) ２ -, -(Si(CH ３ ) ２ O) ｇ -(g represents an integer of 1 to 10), -N(Z)-, -C(Z)=C(Z １ )-, -C(Z)=N-, -C(Z) ２ -C(Z １ ) ２ -, -C(O)-, -C(O)O-, -O-C(O)O-, -C(O)N(Z)-, -C(Z)=C(Z １ )-C(O)O-, -C(Z)=N-, -C(Z)=C(Z １)-C(O)N(Z ２ )-,-C(Z)=C(Z １ )-C(O)-S-, -C(Z)=N-N=C(Z １ )-(Z, Z １ , Z ２ each independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a cycloalkyl group, an aryl group, a cyano group, or a halogen atom), —C≡C—, —N═N—, —S—, —C(S)—, —S(O)—, —SO ２ The hydrogen atoms of the alkylene groups and the heterocyclic groups may be substituted with -, -(O)S(O)O-, -O(O)S(O)O-, -SC(O)-, or a group formed by combining two or more of these groups. Ｈ１ , —OH, —OZ Ｈ１ , -COOH, -C(O)Z Ｈ１ , -C(O)OZ Ｈ１ , -OC(O)Z Ｈ１ , -OC(O)OZ Ｈ１ , -NZ Ｈ１ Z Ｈ２ , -NZ Ｈ１ C(O)Z Ｈ２ , -NZ Ｈ１ C(O)OZ Ｈ２ , -C(O)NZ Ｈ１ Z Ｈ２ , -OC(O)NZ Ｈ１ Z Ｈ２ , -NZ Ｈ１ C(O)NZ Ｈ２ OZ Ｈ３ , -SH, -SZ Ｈ１ , -C(S)Z Ｈ１ , -C(O)SZ Ｈ１ , -SC(O)Z Ｈ１ , wherein Z Ｈ１ , Z Ｈ２ , Z Ｈ３ represents an alkyl group having 1 to 10 carbon atoms, a halogenated alkyl group, or -L-CL. In -L-CL, L represents a single bond or a divalent linking group. Specific examples of the divalent linking group are the same as those of LW and SPW described above. In -L-CL, CL represents a crosslinkable group. Specific examples of the crosslinkable group include crosslinkable groups represented by the following formulas (P-1) to (P-30).

[0020]

[0021] In formulas (P-1) to (P-30), R Ｐ is a hydrogen atom, a halogen atom, a linear, branched or cyclic alkylene group having 1 to 10 carbon atoms, a halogenated alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an alkenyl group having 1 to 20 carbon atoms, an alkynyl group having 1 to 20 carbon atoms, an aryl group having 1 to 20 carbon atoms, a heterocyclic group (which may also be called a heterocyclic group), a cyano group, a hydroxy group, a nitro group, a carboxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, an amino group (including an anilino group), an ammonio group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonyloxy ... a methylamino group, a sulfamoylamino group, an alkyl or arylsulfonylamino group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkyl or arylsulfinyl group, an alkyl or arylsulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, a phosphono group, a silyl group, a hydrazino group, a ureido group, a boronic acid group (-B(OH)), a phosphato group (-OPO(OH)), or a sulfato group (-OSOH); Ｐmay be the same or different. Preferred embodiments of the crosslinkable group include a radically polymerizable group or a cationically polymerizable group. Examples of the radically polymerizable group include a vinyl group represented by the above formula (P-1), a butadiene group represented by the above formula (P-2), a (meth)acrylic group represented by the above formula (P-4), a (meth)acrylamide group represented by the above formula (P-5), a vinyl acetate group represented by the above formula (P-6), a fumaric acid ester group represented by the above formula (P-7), a styryl group represented by the above formula (P-8), a vinylpyrrolidone group represented by the above formula (P-9), a maleic anhydride represented by the above formula (P-11), or a maleimide group represented by the above formula (P-12). Examples of the cationically polymerizable group include a vinyl ether group represented by the above formula (P-18), an epoxy group represented by the above formula (P-19), or an oxetanyl group represented by the above formula (P-20).

[0022] Examples of the terminal group represented by Q include a hydrogen atom, a halogen atom, a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an alkenyl group having 1 to 20 carbon atoms, an alkynyl group having 1 to 20 carbon atoms, an aryl group having 1 to 20 carbon atoms, a heterocyclic group (which may also be called a heterocyclic group), a cyano group, a hydroxy group, a nitro group, a carboxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, an amino group (including an anilino group), an ammonio group, an acylamino group, an aminocarbonylamino group, an alkoxy ... an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkyl or arylsulfonylamino group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkyl or arylsulfinyl group, an alkyl or arylsulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, a phosphono group, a silyl group, a hydrazino group, a ureido group, a boronic acid group (-B(OH) ２ ), phosphato group (—OPO(OH)２ ), sulfato group (—OSO ３ H), or a crosslinkable group represented by any of the above formulae (P1) to (P-30).

[0023] [Liquid Crystal Composition] The liquid crystal composition of the present invention contains a liquid crystal compound, a dichroic substance, and a polymer having a repeating unit A including a structure represented by formula (A) described below (hereinafter, also referred to as a "specific polymer").

[0024] The liquid crystal composition of the present invention can form an optically absorbing anisotropic film in which repelling and the occurrence of alignment defects are suppressed during the formation of the optically absorbing anisotropic film. While the details of the reason for this are unclear, it is generally assumed as follows. Specifically, the specific polymer having a repeating unit A having a branched Si structure in its side chain can reduce the surface tension of the liquid crystal composition and also has good compatibility with the liquid crystal compound and the dichroic material. This is thought to have suppressed repelling during the formation of the optically absorbing anisotropic film. Furthermore, while alignment defects are presumed to be caused by components containing the dichroic material as a nucleus that precipitates during film formation, the good compatibility between the specific polymer and the dichroic material is thought to have enabled the formation of an optically absorbing anisotropic film in which the occurrence of alignment defects is suppressed.

[0025] Furthermore, the liquid crystal composition of the present invention can form an optically absorptive anisotropic film with an excellent degree of alignment. Although the details of the reason for this are not clear, it is presumed that the degree of alignment of the optically absorptive anisotropic film is improved due to the reduction in surface tension of the liquid crystal composition caused by the use of the specific polymer and the good compatibility of the specific polymer with the liquid crystal compound and the dichroic material.

[0026] Each component contained in the liquid crystal composition of the present invention will be described in detail below.

[0027] [Liquid Crystal Compound] The liquid crystal composition of the present invention contains a liquid crystal compound. This allows the dichroic material to be aligned with a higher degree of orientation while suppressing precipitation of the dichroic material. As the liquid crystal compound, either a polymer liquid crystal compound or a low molecular weight liquid crystal compound can be used, with a polymer liquid crystal compound being preferred because it can achieve a higher degree of orientation. Furthermore, as the liquid crystal compound, a polymer liquid crystal compound and a low molecular weight liquid crystal compound may be used in combination. Here, "polymer liquid crystal compound" refers to a liquid crystal compound having a repeating unit in its chemical structure. Furthermore, "low molecular weight liquid crystal compound" refers to a liquid crystal compound having no repeating unit in its chemical structure. Examples of polymer liquid crystal compounds include the thermotropic liquid crystal polymers described in JP 2011-237513 A and the polymer liquid crystal compounds described in paragraphs

[0012] to

[0042] of WO 2018 / 199096 A. Examples of low molecular weight liquid crystal compounds include those described in paragraphs

[0072] to

[0088] of JP 2013-228706 A, and among them, liquid crystal compounds exhibiting smectic properties are preferred. Examples of such liquid crystal compounds include those described in paragraphs

[0019] to

[0140] of WO 2022 / 014340 A, the disclosures of which are incorporated herein by reference.

[0028] The weight-average molecular weight (Mw) of the polymeric liquid crystal compound is preferably 2,000 to 300,000, and more preferably 2,000 to 100,000. When the Mw of the polymeric liquid crystal compound is within the above range, the polymeric liquid crystal compound is easy to handle. Here, the weight-average molecular weight (Mw) and number-average molecular weight (Mn) of the polymeric liquid crystal compound are values ​​measured by gel permeation chromatography (GPC). Solvent (eluent): N-methylpyrrolidone Apparatus name: TOSOH HLC-8220GPC Column: Three TOSOH TSKgel Super HZM-H (4.6 mm x 15 cm) connected together Column temperature: 25°C Sample concentration: 0.1% by mass Flow rate: 0.35 ml / min Calibration curve: A calibration curve using seven samples of TSK standard polystyrene manufactured by TOSOH with Mw = 2,800,000 to 1,050 (Mw / Mn = 1.03 to 1.06) was used.

[0029] The content of the liquid crystal compound is preferably 25 to 2000 parts by mass, more preferably 100 to 1300 parts by mass, and even more preferably 200 to 900 parts by mass, relative to 100 parts by mass of the content of the dichroic material described below. When the content of the liquid crystal compound is within the above range, the degree of orientation of the dichroic material is further improved. The liquid crystal compound may be contained alone, or two or more types may be contained. When two or more types of liquid crystal compounds are contained, the content of the liquid crystal compound refers to the total content of the liquid crystal compounds.

[0030] [Dichroic Substance] The liquid crystal composition of the present invention contains a dichroic substance. Here, the dichroic substance means a dye whose absorbance varies depending on the direction. The dichroic substance may or may not exhibit liquid crystallinity.

[0031] The dichroic substance is not particularly limited, and examples thereof include visible light absorbing substances (dichroic dyes), luminescent substances (fluorescent substances, phosphorescent substances), ultraviolet absorbing substances, infrared absorbing substances, nonlinear optical substances, carbon nanotubes, and inorganic substances (e.g., quantum rods), and any conventionally known dichroic substance (dichroic dye) can be used. Specifically, for example, paragraphs

[0067] to

[0071] of JP 2013-228706 A, paragraphs

[0008] to

[0026] of JP 2013-227532 A, paragraphs

[0008] to

[0015] of JP 2013-209367 A, paragraphs

[0045] to

[0058] of JP 2013-14883 A, paragraphs

[0012] to

[0029] of JP 2013-109090 A, paragraphs

[0009] to

[0017] of JP 2013-101328 A, Paragraphs

[0051] to

[0065] of JP 2013-37353 A, paragraphs

[0049] to

[0073] of JP 2012-63387 A, paragraphs

[0016] to

[0018] of JP 11-305036 A, paragraphs

[0009] to

[0011] of JP 2001-133630 A, paragraphs

[0030] to

[0169] of JP 2011-215337 A, paragraphs

[0021] to

[0075] of JP 2010-106242 A, paragraphs

[0016] to

[0018] of JP 2010-215846 A

[0011] to

[0025] paragraphs,

[0017] to

[0069] paragraphs of JP 2011-048311 A,

[0013] to

[0133] paragraphs of JP 2011-213610 A,

[0074] to

[0246] paragraphs of JP 2011-237513 A,

[0005] to

[0051] paragraphs of JP 2016-006502 A,

[0014] to

[0032] paragraphs of JP 2018-053167 A, and

[0014] to

[0033] paragraphs of JP 2020-11716 A paragraphs

[0005] to

[0041] of International Publication No. 2016 / 060173, paragraphs

[0008] to

[0062] of International Publication No. 2016 / 136561, paragraphs

[0014] to

[0033] of International Publication No. 2017 / 154835, paragraphs

[0014] to

[0033] of International Publication No. 2017 / 154695, paragraphs

[0013] to

[0037] of International Publication No. 2017 / 195833, paragraphs

[0014] to

[0034] of International Publication No. 2018 / 164252,Examples include those described in paragraphs

[0021] to

[0030] of International Publication No. 2018 / 186503, paragraphs

[0043] to

[0063] of International Publication No. 2019 / 189345, paragraphs

[0043] to

[0085] of International Publication No. 2019 / 225468, paragraphs

[0050] to

[0074] of International Publication No. 2020 / 004106, and paragraphs

[0015] to

[0038] of International Publication No. 2021 / 044843.

[0032] The dichroic substance is preferably a dichroic azo dye compound. A dichroic azo dye compound refers to an azo dye compound whose absorbance varies depending on the direction. A dichroic azo dye compound may or may not exhibit liquid crystallinity. When a dichroic azo dye compound exhibits liquid crystallinity, it may exhibit either nematic or smectic properties. The temperature range in which the liquid crystal phase is exhibited is preferably room temperature (approximately 20 to 28°C) to 300°C, and more preferably 50 to 200°C from the viewpoints of handleability and manufacturing suitability.

[0033] In the present invention, from the viewpoint of adjusting color hue, it is preferable to use at least one dye compound (first dichroic azo dye compound) having a maximum absorption wavelength in the wavelength range of 560 to 700 nm, and at least one dye compound (second dichroic azo dye compound) having a maximum absorption wavelength in the wavelength range of 455 nm or more and less than 560 nm.

[0034] In the present invention, three or more kinds of dichroic azo dye compounds may be used in combination, and for example, from the viewpoint of making the optically absorptive anisotropic film closer to black, it is preferable to use a first dichroic azo dye compound, a second dichroic azo dye compound, and at least one dye compound (third dichroic azo dye compound) having a maximum absorption wavelength in the wavelength range of 380 nm or more and less than 455 nm in combination. In the present invention, from the viewpoint of excellent light fastness of the optically absorptive anisotropic film, it is preferable to contain two or more kinds of first dichroic azo dye compounds.

[0035] In the present invention, the dichroic azo dye compound preferably has a crosslinkable group, such as a (meth)acryloyl group, an epoxy group, an oxetanyl group, or a styryl group, and among these, a (meth)acryloyl group is preferred.

[0036] The content of the dichroic substance is preferably 3 to 90% by mass, more preferably 5 to 70% by mass, and even more preferably 10 to 60% by mass, of the total solid content of the liquid crystal composition, in order to increase the degree of orientation of the optically absorptive anisotropic film that is formed. When multiple dichroic substances are used in combination, the total amount of the multiple dichroic substances is preferably within the above-mentioned range. Here, in this specification, "total solid content in the liquid crystal composition" refers to components excluding the solvent, and specific examples of the solid content include a liquid crystal compound, a dichroic substance, and a specific polymer.

[0037] [Specific Polymer] The specific polymer is a polymer having a repeating unit A, and is preferably a polymer (copolymer) containing the repeating unit A (preferably, the repeating unit A-1) and at least one of the repeating unit B and the repeating unit D, and more preferably a polymer (copolymer) containing the repeating unit A (preferably, the repeating unit A-1), the repeating unit B, and the repeating unit D, from the viewpoints of the effects of the present invention being more excellent and the degree of orientation of the optically absorptive anisotropic film being more excellent, particularly in the case of horizontal orientation (the angle θ between the transmittance central axis of the optically absorptive anisotropic film and the normal direction to the surface of the optically absorptive anisotropic film is more than 45° and not more than 90°).

[0038] <Repeating Unit A> The repeating unit A is a repeating unit containing a structure represented by the following formula (A).

[0039]

[0040] In formula (A), R Ａ１ and R Ａ２ R each independently represents a hydrogen atom or an alkyl group. Ａ１ and R Ａ２ Examples of the alkyl group in R include linear alkyl groups having 1 to 18 carbon atoms (preferably 1 to 6 carbon atoms, more preferably 1 to 4 carbon atoms) and branched or cyclic alkyl groups having 3 to 18 carbon atoms (preferably 3 to 9 carbon atoms, more preferably 3 to 6 carbon atoms). Specific examples include methyl, ethyl, propyl, butyl, isopropyl, tert-butyl, and cyclohexyl groups. Ａ１ and R Ａ２are preferably all hydrogen atoms.

[0041] In formula (A), R Ａ３ represents a hydrogen atom, a halogen atom or a substituent. Ａ３ Examples of the substituent in the formula (a) include an alkyl group, an alkenyl group, an aryl group, or a substituent having a linking group and a structure of formula (a) at the end, which will be described later. Specific examples of the substituent having a linking group and a structure of formula (a) at the end, include -CH ２ -CO-L Ａ１ -L Ａ２ -(Si(R ａ１ ) (R ａ２ ) (R ａ３ )) ｍ In addition, -L Ａ１ -L Ａ２ -(Si(R ａ１ ) (R ａ２ ) (R ａ３ )) ｍ The definition of -L in formula (A-1) described later is Ａ１ -L Ａ２ -(Si(R ａ１ ) (R ａ２ ) (R ａ３ )) ｍ The definition and preferred embodiments are the same as those of R. ２３ The substituent in R is preferably an alkyl group, more preferably a linear alkyl group having 1 to 4 carbon atoms, and further preferably a methyl group or an ethyl group. ２３ is preferably a hydrogen atom or a methyl group.

[0042] In formula (A), X represents a substituent (hereinafter also referred to as "substituent X") containing one or more structures represented by the following formula (a) (hereinafter also referred to as "group a").

[0043] The substituent X is preferably a monovalent hydrocarbon group having one or more groups a. The monovalent hydrocarbon group in the substituent X may be linear, branched, or cyclic, and is preferably linear or branched. Examples of the monovalent hydrocarbon group in the substituent X include monovalent aliphatic hydrocarbon groups and monovalent aromatic hydrocarbon groups. The monovalent hydrocarbon group is preferably a monovalent aliphatic hydrocarbon group, and more preferably an alkyl group. The alkyl group may be linear, branched, or cyclic, and is preferably linear or branched. The number of carbon atoms in the alkyl group is preferably 1 to 30, more preferably 2 to 25, and even more preferably 2 to 20. Here, -CH constituting a part of the monovalent hydrocarbon group in the substituent X ２ -, one or more -CH ２ - each independently represents -O-, -CO-, -C(O)-O-, or -C(O)-N(R Ｘ１０ )-,-[O-Si(R Ｘ１１ ) ２ ] ｎｘ -, -Si(R Ｘ１２ ) ２ -, and is preferably substituted with such a divalent group. Ｘ１０ represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, preferably a hydrogen atom. The alkyl group may be linear, branched, or cyclic, but is preferably linear or branched. R Ｘ１１ and R Ｘ１２ each independently represents a hydrogen atom, a hydroxy group, group a (i.e., a group represented by the following formula (a)), or an alkyl group having 1 to 6 carbon atoms, with an alkyl group having 1 to 6 carbon atoms or the above group a being preferred. The alkyl group may be linear, branched, or cyclic, but is preferably linear or branched. Ｘ１１ may be the same or different. Ｘ１２ may be the same or different. nx is a number of 1 or more, preferably a number from 1 to 100, and more preferably a number from 1 to 11. When nx is a number of 2 or more, a plurality of [O—Si(R Ｘ１１ ) ２ ] may be the same or different.

[0044] One preferred embodiment of the substituent X is a group represented by the following formula (X1): Ｘ１０ -C(R Ｘ２０ ) ｍｘ (L Ｘ１１ -a) ３－ｍｘ Formula (X1)

[0045] In formula (X1), * represents a bonding position.

[0046] In formula (X1), L Ｘ１０ and L Ｘ１１ each independently represents a divalent hydrocarbon group, provided that —CH ２ -, one or more -CH ２ - each independently represents -O-, -CO-, -C(O)-O-, or -C(O)-N(R Ｘ１０ )-,-[O-Si(R Ｘ１１ ) ２ ] ｎｘ -, -Si(R Ｘ１２ ) ２ - or other divalent groups. Ｘ１０ , R Ｘ１１ , R Ｘ１２ The definitions of n and nx are as described above. Ｘ１１ may be the same or different. Ｘ１２ may be the same or different. When nx is a number of 2 or more, a plurality of [O—Si(R Ｘ１１ ) ２ ] may be the same or different. Ｘ１０ and L Ｘ１１ Examples of the divalent hydrocarbon group in include a divalent aliphatic hydrocarbon group and a divalent aromatic hydrocarbon group. The divalent hydrocarbon group is preferably a divalent aliphatic hydrocarbon group, and more preferably an alkylene group. The alkylene group may be linear, branched, or cyclic, but is preferably linear or branched, and more preferably linear. The alkylene group preferably has 1 to 30 carbon atoms, more preferably 2 to 25, and even more preferably 2 to 20 carbon atoms.

[0047] In formula (X1), R Ｘ２０represents a hydrogen atom or a monovalent hydrocarbon group. Ｘ２０ The definition of the monovalent hydrocarbon group in is the same as that of the monovalent hydrocarbon group explained above for the substituent X.

[0048] In formula (X1), a represents a structure (group) represented by formula (a) described below.

[0049] In formula (X1), mx represents an integer of 0 to 2. When mx is an integer of 0 or 1, a plurality of (L Ｘ１１ -a) may be the same or different. When mx is 2, two R Ｘ２０ may be the same or different.

[0050]

[0051] In formula (a), * represents a bonding position. ａ１ , R ａ２ and R ａ３ each independently represents an alkyl group, alkenyl group, aryl group, or alkylenearyl group, each of which may have a substituent. Specific examples of the substituent include the substituent W described above, with halogen atoms, alkyl groups, alkylcarbonyl groups, alkyloxycarbonyl groups, alkylcarbonyloxy groups, and alkoxy groups being preferred. Examples of the alkyl group include linear alkyl groups having 1 to 18 carbon atoms, and branched or cyclic alkyl groups having 3 to 18 carbon atoms. Specific examples include methyl groups, ethyl groups, propyl groups, butyl groups, isopropyl groups, tert-butyl groups, and cyclohexyl groups. Examples of the alkenyl group include alkenyl groups having 2 to 12 carbon atoms. Specific examples include vinyl groups, 1-propenyl groups, 1-butenyl groups, 1-methyl-1-propenyl groups, 1-cyclopentenyl groups, and 1-cyclohexenyl groups. Examples of the aryl group include aryl groups having 6 to 12 carbon atoms. Specific examples include a phenyl group, an α-methylphenyl group, a naphthyl group, etc. Examples of the alkylenearyl group include alkylenearyl groups having 7 to 30 carbon atoms.

[0052] The number of groups a contained in the substituent X is 1 or more, preferably 2 or more, and more preferably 3 or more, from the viewpoint of obtaining a better degree of orientation of the optically absorbing anisotropic film, and is preferably 18 or less, more preferably 12 or less, even more preferably 9 or less, and particularly preferably 6 or less, from the viewpoint of further suppressing orientation defects.

[0053] The repeating unit A is preferably a repeating unit A-1 represented by the following formula (A-1), in that the effects of the present invention are more excellent and the degree of orientation of the optically absorptive anisotropic film is more excellent.

[0054] In formula (A-1), R Ａ１ , R Ａ２ and R Ａ３ is the same as that explained in the above formula (A), and R ａ１ , R ａ２ and R ａ３ is the same as that explained in (a) above. When m in formula (A-1) is an integer of 2 or more, a plurality of R ａ１ may be the same or different, and multiple R ａ２ may be the same or different, and multiple R ａ３ may be the same or different.

[0055] In formula (A-1), L Ａ１ represents a single bond, —O—, or —NR Ｚ - where R Ｚ represents a hydrogen atom or a substituent. Ａ１ -NR in Ｚ -Regarding R Ｚ The substituent in L is preferably an alkyl group, more preferably a linear alkyl group having 1 to 4 carbon atoms, and even more preferably a methyl group or an ethyl group. Ａ１ is preferably —O— or NH—, more preferably —O—.

[0056] In formula (A-1), L Ａ２ represents a single bond or an (m+1)-valent linking group. Ａ２Suitable examples of the (m+1)-valent linking group in the formula (I) include an (m+1)-valent hydrocarbon group having 1 to 10 carbon atoms which may have a substituent, in which some of the carbon atoms constituting the hydrocarbon group may be substituted with heteroatoms. Here, the substituent which the hydrocarbon group may have is preferably an alkyl group, more preferably a linear alkyl group having 1 to 4 carbon atoms, and even more preferably a methyl group or an ethyl group. Furthermore, examples of the heteroatom include a silicon atom, an oxygen atom, and a nitrogen atom.

[0057] In formula (A-1), m represents an integer of 1 or greater. From the viewpoint of achieving a better degree of orientation of the optically absorptive anisotropic film, m is preferably an integer of 2 or greater, and more preferably an integer of 3 or greater. Furthermore, from the viewpoint of further suppressing orientation defects, m is preferably an integer of 18 or less, more preferably an integer of 12 or less, even more preferably an integer of 9 or less, and particularly preferably an integer of 6 or less.

[0058] Specific examples of the repeating unit A include repeating units corresponding to the monomers represented by the following formulae K-1 to K-33. In the examples described below, the monomer represented by the following formula K-1 will be referred to as "monomer K-1". The same applies to other monomers. The monomer represented by formula K-29 is -(O-Si(CH ３ ) ２ Since it is a mixture of monomers with different numbers of )-, it is expressed as an average value with n ≈ 11. The same applies to the monomer represented by K-30.

[0059]

[0060]

[0061] The content of the repeating unit A is preferably 10 to 90% by mass, more preferably 15 to 80% by mass, and even more preferably 20 to 70% by mass, based on the total repeating units (100% by mass) contained in the specific polymer. When the content of the repeating unit A is within the above range, the effects of the present invention are more excellent, and the degree of orientation of the optically absorptive anisotropic film is more excellent. The repeating unit A may be contained in the specific polymer as a single type, or as two or more types. When two or more types of repeating unit A are contained, the content of the repeating unit A refers to the total content of the repeating units A.

[0062] <Repeating Unit B> The repeating unit B is a repeating unit represented by the following formula (B). It is believed that the repeating unit B having an amide structure can improve the compatibility between the copolymer and the liquid crystal compound. As a result, it is estimated that an optically absorbing anisotropic film with fewer alignment defects was obtained.

[0063]

[0064] In formula (B), R Ｂ１ , R Ｂ２ and R Ｂ３ R each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｂ１ , R Ｂ２ and R Ｂ３ Examples of the alkyl group in R include linear alkyl groups having 1 to 18 carbon atoms (preferably 1 to 6 carbon atoms, more preferably 1 to 4 carbon atoms) and branched or cyclic alkyl groups having 3 to 18 carbon atoms (preferably 3 to 9 carbon atoms, more preferably 3 to 6 carbon atoms). Specific examples include methyl, ethyl, propyl, butyl, isopropyl, tert-butyl, and cyclohexyl groups. Ｂ１ , R Ｂ２ and R Ｂ３ Examples of the alkenyl group in R include linear alkenyl groups having 2 to 18 carbon atoms and branched alkenyl groups having 3 to 18 carbon atoms. Specific examples include vinyl groups, aryl groups, 2-butenyl groups, and 3-pentenyl groups. Ｂ１ , R Ｂ２ and R Ｂ３The aryl group in R includes an aryl group having 6 to 30 carbon atoms (preferably 6 to 20 carbon atoms, more preferably 6 to 12 carbon atoms). Specific examples include a phenyl group, a 2,6-diethylphenyl group, a 3,5-ditrifluoromethylphenyl group, a styryl group, a naphthyl group, and a biphenyl group. Ｂ１ , R Ｂ２ and R Ｂ３ is preferably a hydrogen atom or an alkyl group, more preferably a hydrogen atom or a methyl group, and even more preferably a hydrogen atom.

[0065] In formula (B), R Ｂ４ and R Ｂ５ R each independently represents a hydrogen atom or a substituent. Ｂ４ and R Ｂ５ is a substituent, R Ｂ４ and R Ｂ５ may be linked to form a ring.

[0066] R Ｂ４ The molecular weight and R Ｂ５ The total molecular weight of the above is preferably 200 or less, more preferably 100 or less, and even more preferably 70 or less. The details of the reason for this are not clear, but it is generally presumed as follows. That is, if the total molecular weight is 100 or less, there is no steric hindrance from the substituents, and the specific copolymer does not inhibit the alignment of the liquid crystal compound and the dichroic material, which is thought to result in a high degree of order in the liquid crystal and a superior degree of alignment in the light absorption anisotropic film. Ｂ４ The molecular weight and R Ｂ５ The lower limit of the total molecular weight of the above is preferably 2 or more.

[0067] R Ｂ４ and R Ｂ５ In terms of achieving better effects of the present invention, the substituent represented by is preferably an organic group, more preferably an organic group having 1 to 15 carbon atoms, even more preferably an organic group having 1 to 12 carbon atoms, and particularly preferably an organic group having 1 to 8 carbon atoms. Examples of the organic group include linear, branched, or cyclic alkyl groups, aromatic hydrocarbon groups, and heterocyclic groups.

[0068] The number of carbon atoms in the alkyl group is preferably 1 to 15, more preferably 1 to 12, and even more preferably 1 to 8. The carbon atoms in the alkyl group may be —O—, —Si(CH ３ ) ２ -, -(Si(CH ３ ) ２ O) ｇ -, -(OSi(CH ３ ) ２ ) ｇ -(g represents an integer of 1 to 10), -N(Z)-, -C(Z)=C(Z １ )-, -C(Z)=N-, -N=C(Z)-, -C(O)-, -OC(O)-, -C(O)O-, -O-C(O)O-, -N(Z)C(O)-, -C(O)N(Z)-, -C(Z)=C(Z １ )-C(O)O-, -OC(O)-C(Z)=C(Z １ )-, -C(Z)=N-, -N=C(Z)-, -C(Z)=C(Z １ )-C(O)N(Z ２ ) -, -N(Z ２ )-C(O)-C(Z)=C(Z １ )-,-C(Z)=C(Z １ )-C(O)-S-, -S-C(O)-C(Z)=C(Z １ )-,-C(Z)=N-N=C(Z １ )-(Z, Z １ and Z ２ each independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a cycloalkyl group, an aryl group, a cyano group, or a halogen atom), —C≡C—, —N═N—, —S—, —C(S)—, —S(O)—, —SO ２ The alkyl group may be substituted with -, -(O)S(O)O-, -O(O)S(O)O-, -SC(O)-, and -C(O)S-, or with a group consisting of a combination of two or more of these groups. Among the groups with which the carbon atom of the alkyl group may be substituted, -O-, -C(O)-, -N(Z)-, -OC(O)-, or -C(O)O- is preferred in terms of achieving superior effects of the present invention. The hydrogen atom of the alkyl group may be substituted with a halogen atom, a cyano group, an aryl group, a nitro group, -OZ Ｈ１ , -C(O)Z Ｈ１ , -C(O)OZ Ｈ１ , -OC(O)Z Ｈ１, -OC(O)OZ Ｈ１ , -NZ Ｈ１ Z Ｈ２ , -NZ Ｈ１ C(O)Z Ｈ２ , -NZ Ｈ１ C(O)OZ Ｈ２ , -C(O)NZ Ｈ１ Z Ｈ２ , -OC(O)NZ Ｈ１ Z Ｈ２ , -NZ Ｈ１ C(O)NZ Ｈ２ OZ Ｈ３ , -SZ Ｈ１ , -C(S)Z Ｈ１ , -C(O)SZ Ｈ１ , or -SC(O)Z Ｈ１ , may be substituted with. Ｈ１ , Z Ｈ２ and Z Ｈ３ each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, a cyano group, or a nitro group. Among the groups in which a hydrogen atom of the alkyl group may be substituted, —OH, —COOH, or an aryl group (a phenyl group is preferred) is preferred in terms of achieving better effects of the present invention.

[0069] The hydrogen atoms of the aromatic hydrocarbon group and the hydrogen atoms of the heterocyclic group may be substituted with a halogen atom, a cyano group, an alkyl group having 1 to 10 carbon atoms, a cyano group, a nitro group, -OZ Ｈ１ , -C(O)Z Ｈ１ , -C(O)OZ Ｈ１ , -OC(O)Z Ｈ１ , -OC(O)OZ Ｈ１ , -NZ Ｈ１ Z Ｈ２ , -NZ Ｈ１ C(O)Z Ｈ２ , -NZ Ｈ１ C(O)OZ Ｈ２ , -C(O)NZ Ｈ１ Z Ｈ２ , -OC(O)NZ Ｈ１ Z Ｈ２ , -NZ Ｈ１ C(O)NZ Ｈ２ OZ Ｈ３ , -SZ Ｈ１ , -C(S)Z Ｈ１ , -C(O)SZ Ｈ１ , -SC(O)ZＨ１ , -B(OH) ２ Z may be substituted with Ｈ１ , Z Ｈ２ and Z Ｈ３ each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, a cyano group, or a nitro group. Among the groups with which the hydrogen atom of the aromatic hydrocarbon group and the hydrogen atom of the heterocyclic group may be substituted, -OH and -B(OH) are preferred in terms of providing better effects for the present invention. ２ is preferred.

[0070] R Ｂ４ and R Ｂ５ are each independently preferably a hydrogen atom or an organic group having 1 to 15 carbon atoms, in terms of more excellent effects of the present invention. Preferred embodiments of the organic group are as described above. In terms of more excellent effects of the present invention, R Ｂ４ and R Ｂ５ At least one of the groups is preferably a substituent, and at least one of the groups is more preferably an organic group having 1 to 15 carbon atoms.

[0071] R Ｂ４ and R Ｂ５ The ring formed by linking R is a heterocycle containing a nitrogen atom in formula (B), and may further contain heteroatoms such as oxygen atoms, sulfur atoms, and nitrogen atoms in the ring. Ｂ４ and R Ｂ５ The ring formed by linking R is preferably a 4- to 8-membered ring, more preferably a 5- to 7-membered ring, and even more preferably a 5- or 6-membered ring, in terms of achieving better effects of the present invention. Ｂ４ and R Ｂ５ The number of carbon atoms constituting the ring formed by linking R is preferably 3 to 7, and more preferably 3 to 6, in terms of achieving better effects of the present invention. Ｂ４ and R Ｂ５ The ring formed by linking R may or may not have aromaticity, but it is preferable that it does not have aromaticity in order to achieve better effects of the present invention. Ｂ４ and R Ｂ５ Specific examples of the ring formed by linking the groups include the following groups.

[0072]

[0073] Specific examples of the repeating unit B are shown below, but the repeating unit B is not limited to the following structures.

[0074]

[0075] When the specific polymer has repeating unit B, the content of repeating unit B is preferably 2 to 75% by mass, more preferably 3 to 70% by mass, and even more preferably 5 to 65% by mass, relative to the total repeating units (100% by mass) contained in the specific polymer. When the content of repeating unit B is within the above range, the effects of the present invention are more excellent, and the degree of orientation of the optically absorptive anisotropic film is more excellent. The specific polymer may contain one type of repeating unit B alone, or two or more types. When two or more types of repeating unit B are contained, the content of repeating unit B refers to the total content of repeating unit B.

[0076] <Repeating Unit D> The repeating unit D is a repeating unit represented by the following formula (D): The repeating unit D is a repeating unit containing a predetermined spacer (S p Ｄ１ ) and a linking group having a predetermined ring structure (Cy in formula (B) described later). Ｄ ) which is believed to improve the viscosity of the liquid crystal composition and further suppress repelling. Furthermore, since the repeating unit D has a predetermined hydrogen-bonding group (D in formula (B) described later), it forms a polymer through hydrogen bonding and forms an air-interface layer with high planarity suitable for aligning the liquid crystal compound and the dichroic substance, which is believed to further improve the degree of alignment of the optically absorptive anisotropic film that is formed.

[0077]

[0078] In formula (D), R Ｄ１ , R Ｄ２ and R Ｄ３ R each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｄ１ , R Ｄ２ and R Ｄ３Specific examples and preferred embodiments of the alkyl group, alkenyl group and aryl group in the formula (B) are Ｂ１ , R Ｂ２ and R Ｂ３ The alkyl group, alkenyl group, and aryl group in R Ｄ１ , R Ｄ２ and R Ｄ３ is preferably a hydrogen atom or an alkyl group, more preferably a hydrogen atom or a methyl group, and even more preferably a hydrogen atom.

[0079] In formula (D), L Ｄ１ represents a single bond, —COO— or —CO—, and —CO— is preferred.

[0080] In formula (D), Sp Ｄ１ represents a divalent hydrocarbon group having 1 to 20 carbon atoms. The divalent hydrocarbon group may be linear or branched. Ｄ１ In the formula, examples of the divalent hydrocarbon group having 1 to 20 carbon atoms include a divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, a divalent alicyclic hydrocarbon group having 3 to 20 carbon atoms, a divalent aromatic hydrocarbon group having 6 to 20 carbon atoms, and a divalent aromatic heterocyclic group having 6 to 20 carbon atoms, and among these, a divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms is preferred. Here, as the divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, an alkylene group having 1 to 15 carbon atoms is preferred, and an alkylene group having 1 to 8 carbon atoms is more preferred. Specific examples of suitable groups include a methylene group, an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a methylhexylene group, and a heptylene group. In addition, in the formula Sp Ｄ１ -CH which constitutes part of the hydrocarbon group in ２ -, one or two or more non-adjacent -CH ２ Each - may be independently substituted with -O-, -S-, -NH-, or -N(Q)-. Q represents a substituent, and examples thereof include the substituent W described above. Among these, an alkyl group, an alkoxy group, or a halogen atom is preferable.

[0081] In formula (D), L Ｄ２ and L Ｄ３ each independently represents a single bond or a divalent linking group. Ｄ２ and L Ｄ３Examples of the divalent linking group in the formula include -C(O)O-, -O-, -S-, and -C(O)NR Ｌ１ -, -SO ２ - and -NR Ｌ１ R Ｌ２ In the formula, R Ｌ１ and R Ｌ２ each independently represents a hydrogen atom or an optionally substituted alkyl group having 1 to 6 carbon atoms. Examples of the substituent that the alkyl group having 1 to 6 carbon atoms may have include the aforementioned substituent W, and among these, an alkyl group, an alkoxy group, or a halogen atom is preferred.

[0082] In formula (D), Cy Ｄ represents a divalent linking group containing a mesogen group. A mesogen group is a group that represents the main skeleton of a liquid crystal molecule that contributes to liquid crystal formation. The liquid crystal molecule exhibits liquid crystallinity, which is an intermediate state (mesophase) between a crystalline state and an isotropic liquid state. There are no particular limitations on the mesogen group, and reference can be made, for example, to "Flussige Kristalle in Tablellen II" (VEB Deutsche Verlag fur Grundstoff Industrie, Leipzig, published in 1984), particularly the description on pages 7 to 16, and to "Liquid Crystal Handbook" edited by the Liquid Crystal Handbook Editorial Committee (Maruzen, published in 2000), particularly the description in Chapter 3. The mesogen group preferably contains 1 to 10 cyclic structures, and more preferably contains 1 to 7 cyclic structures. Specific examples of the cyclic structure include an aromatic hydrocarbon group, a heterocyclic group, and an alicyclic group.

[0083] Cy ＤThe divalent linking group containing a mesogen group in (I) is preferably a divalent mesogen group. Examples of divalent mesogen groups include divalent aromatic hydrocarbon groups, divalent heterocyclic groups, and divalent alicyclic groups. Specific examples of divalent aromatic hydrocarbon groups include a phenylene group, a naphthylene group, a fluorene-diyl group, an anthracene-diyl group, and a tetracene-diyl group. The divalent heterocyclic group may be either aromatic or non-aromatic, but is preferably a divalent aromatic heterocyclic group from the viewpoint of further improving the degree of orientation. Examples of atoms other than carbon that constitute a divalent aromatic heterocyclic group include a nitrogen atom, a sulfur atom, and an oxygen atom. When an aromatic heterocyclic group has multiple atoms that constitute a ring other than carbon, these atoms may be the same or different. Specific examples of the divalent aromatic heterocyclic group include a pyridylene group (pyridine-diyl group), a pyridazine-diyl group, an imidazole-diyl group, a thienylene (thiophene-diyl group), a quinolylene group (quinoline-diyl group), an isoquinolylene group (isoquinoline-diyl group), an oxazole-diyl group, a thiazole-diyl group, an oxadiazole-diyl group, a benzothiazole-diyl group, a benzothiadiazole-diyl group, a phthalimide-diyl group, a thienothiazole-diyl group, a thiazolothiazole-diyl group, a thienothiophene-diyl group, and a thienoxazole-diyl group. Specific examples of the divalent alicyclic group include a cyclopentylene group and a cyclohexylene group, and the carbon atoms are selected from the group consisting of —O—, —Si(CH ３ ) ２ -, -N(Z Ｍ )-(Z Ｍ represents hydrogen, an alkyl group having 1 to 4 carbon atoms, a cycloalkyl group, an aryl group, a cyano group, or a halogen atom), —C(O)—, —S—, —C(S)—, —S(O)—, and —SO ２ -, or a group in which two or more of these groups are combined.

[0084] Among these, Cy is preferred because it provides a more excellent effect of the present invention and a more excellent degree of orientation of the optical absorption anisotropic film. Ｄ is expressed by the following formula (Cy Ｄ -1) to (Cy ＤIn the following formula, * represents L Ｄ２ or L Ｄ３ The carbon atoms constituting the ring structure in the following formula may be substituted with a heteroatom or may have a substituent. Examples of the substituent that the carbon atoms constituting the ring structure may have include the above-mentioned substituent W, and among these, an alkyl group, an alkoxy group, or a halogen atom is preferred.

[0085]

[0086] The above formula (Cy Ｄ -1) to (Cy Ｄ -15) specifically include, for example, a 1,4-phenylene group, a 1,4-cyclohexylene group, a 1,4-cyclohexenyl group, a tetrahydropyran-2,5-diyl group, a 1,4-piperazine group, a 1,4-piperidine group, a 1,3-dioxane-2,5-diyl group, a tetrahydrothiopyran-2,5-diyl group, a 1,4-bicyclo(2,2,2)octylene group, a decahydronaphthalene-2,6-diyl group, a pyridine-2,5-diyl group, a pyrimidine-2,5-diyl group, a pyr ... Examples of the thiophene-2,7-diyl group include thiazine-2,5-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, 2,6-naphthylene group, phenanthrene-2,7-diyl group, 9,10-dihydrophenanthrene-2,7-diyl group, 1,2,3,4,4a,9,10a-octahydrophenanthrene-2,7-diyl group, 9-fluorenone-2,7-diyl, fluorene-2,7-diyl group, thienothiophene-3,6-diyl group, carbazole-3,6-diyl group, and carbazole-2,7-diyl group.

[0087] Cy in the above formula (B) Ｄ is preferably selected from the above formula (Cy Ｄ −1), (Cy Ｄ -4), (Cy Ｄ -7), (Cy Ｄ -10) and (Cy Ｄ -13), and Ｄ -7) and (CyＤ It is more preferable that the divalent linking group is a divalent linking group represented by any one of the following formulae:

[0088] In formula (D), D represents a hydrogen-bonding group composed of a hydrogen atom and a nonmetallic atom of Groups 14 to 16 (periodic table). The nonmetallic atom may have a substituent. Examples of nonmetallic atoms of Groups 14 to 16 include oxygen atoms, sulfur atoms, nitrogen atoms, and carbon atoms. Examples of substituents that may be carried by nonmetallic atoms (particularly nitrogen atoms and carbon atoms) include halogen atoms, alkyl groups, alkoxy groups, alkyl-substituted alkoxy groups, cyclic alkyl groups, aryl groups (e.g., phenyl groups, naphthyl groups, etc.), cyano groups, amino groups, nitro groups, alkylcarbonyl groups, sulfo groups, and hydroxyl groups.

[0089] Examples of such hydrogen bond-forming groups include hydrogen bond donor groups and hydrogen bond acceptor groups. Specific examples of hydrogen bond donor groups include amino groups, amide groups, urea groups, urethane groups, sulfonylamino groups, sulfo groups, phospho groups, hydroxy groups, mercapto groups, carboxy groups, methylene groups substituted with electron-withdrawing groups, and methine groups substituted with electron-withdrawing groups, with carboxy groups and amide groups being preferred. Specific examples of hydrogen bond-accepting groups include heteroatoms having unshared electron pairs on heterocycles, hydroxy groups, aldehydes, ketones, carboxy groups, carboxylic acid esters, carboxylic acid amides, lactones, lactams, sulfonic acid amides, sulfo groups, phospho groups, phosphoric acid amides, urethanes, ureas, ether structures (particularly polymer structures having oxygen atoms contained in polyether structures), aliphatic amines, and aromatic amines, with carboxy groups and amide groups being preferred.

[0090] In formula (D), n represents an integer of 1 to 3. When n is 2 or 3, a plurality of L Ｄ２ may be the same or different, and a plurality of Cy Ｄ may be the same or different.

[0091] In the present invention, n in the above formula (D) is preferably 1 or 2 because the haze of the optically absorptive anisotropic film is less observable (the haze is better), and more preferably 2 because repelling is more suppressed when the optically absorptive anisotropic film is formed.

[0092] In the present invention, the repeating unit D is selected from the group consisting of L Ｄ３ represents a single bond, and D represents -COOH or -NHCOR ２ , or -CONHR ３ Preferably, the repeating unit is a repeating unit that represents ２ and R ３ each independently represents an alkyl group or alkenyl group having 1 to 10 carbon atoms. The alkyl group and alkenyl group may be linear or branched. However, -CH ２ -, one or two or more non-adjacent -CH ２ - may be substituted with -O-.

[0093] In the present invention, the repeating unit D is preferably L Ｄ３ represents a single bond, and D is -NHCOR ４ Preferably, the repeating unit is a repeating unit that represents ４ represents an alkyl group or alkenyl group having 1 to 3 carbon atoms. The alkyl group and alkenyl group may be linear or branched. However, -CH ２ -, one or two or more non-adjacent -CH ２ - may be substituted with -O-.

[0094] Examples of the monomer that forms the repeating unit D include monomers represented by the following formula: In the following formula, Me represents a methyl group, and Ac represents an acetyl group.

[0095]

[0096]

[0097]

[0098]

[0099] When the specific polymer has a repeating unit D, the content of the repeating unit D is preferably 5 to 85% by mass, more preferably 10 to 75% by mass, and even more preferably 20 to 70% by mass, relative to the total repeating units (100% by mass) contained in the specific polymer. When the content of the repeating unit D is within the above range, the effects of the present invention are more excellent, and the degree of orientation of the optically absorptive anisotropic film is more excellent. The repeating unit D may be contained in the specific polymer as a single type, or two or more types. When two or more types of repeating units D are contained, the content of the repeating unit D refers to the total content of the repeating units D.

[0100] <Repeating Unit X> The specific polymer may have a repeating unit X represented by formula X.

[0101]

[0102] In formula (X), R Ｘ１ , R Ｘ２ and R Ｘ３ R each independently represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group. Ｘ１ , R Ｘ２ and R Ｘ３ Specific examples and preferred embodiments of the alkyl group, alkenyl group and aryl group in the formula (B) are Ｂ１ , R Ｂ２ and R Ｂ３ The alkyl group, alkenyl group, and aryl group in R Ｘ１ , R Ｘ２ and R Ｘ３ is preferably a hydrogen atom or an alkyl group, more preferably a hydrogen atom or a methyl group, and even more preferably a hydrogen atom.

[0103] L Ｘ１ represents a single bond or —CO—, and —CO— is preferred.

[0104] In formula (X), L Ｘ２ represents a divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms. The aliphatic hydrocarbon group may be linear or branched. As the divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, an alkylene group having 1 to 15 carbon atoms is preferred, and an alkylene group having 1 to 8 carbon atoms is more preferred. Specific examples of suitable groups include a methylene group, an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a methylhexylene group, and a heptylene group. L Ｘ２ -CH which constitutes part of the hydrocarbon group in ２ -, one or more -CH ２ Each - may be independently substituted with -O-, -C(O)O- or a phenylene group.

[0105] In formula (X), B represents a boron atom.

[0106] In formula (X), R Ｘ４ and R Ｘ５ R each independently represent a hydrogen atom, an alkyl group which may have a substituent, an aryl group which may have a substituent, or a heteroaryl group which may have a substituent. Among these, a hydrogen atom or an alkyl group which may have a substituent is preferred in terms of superiority in at least one of adhesion and degree of orientation. The number of carbon atoms in the alkyl group is not particularly limited, and is preferably 1 to 10, and more preferably 1 to 5. Examples of the alkyl group include a methyl group, an ethyl group, and a propyl group. The number of carbon atoms in the aryl group is not particularly limited, and is preferably 4 to 20, and more preferably 6 to 12. Examples of the aryl group include a phenyl group. The number of carbon atoms in the heteroaryl group is not particularly limited, and is preferably 3 to 10, and more preferably 3 to 5. Examples of heteroatoms contained in the heteroaryl group include an oxygen atom, a nitrogen atom, and a sulfur atom. R Ｘ４ and R Ｘ５ may be bonded to each other to form a ring.

[0107] Specific examples of the repeating unit X are shown below, but the repeating unit X is not limited to the following structures.

[0108]

[0109] When the specific polymer has a repeating unit X, the content of the repeating unit X is preferably 3 to 75% by mass, more preferably 5 to 70% by mass, and even more preferably 10 to 60% by mass, relative to the total repeating units (100% by mass) contained in the specific polymer. When the content of the repeating unit X is within the above range, the effects of the present invention are more excellent, and the degree of orientation of the optically absorptive anisotropic film is more excellent. The repeating unit X may be contained in the specific polymer alone, or in combination of two or more types. When two or more types of repeating unit X are contained, the content of the repeating unit X refers to the total content of the repeating units X.

[0110] <Repeating Unit Y> The specific polymer may have a repeating unit Y represented by formula Y.

[0111]

[0112] In formula (Y), R Ｙ１ , R Ｙ２ and R Ｙ３ R each independently represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group. Ｙ１ , R Ｙ２ and R Ｙ３ Specific examples and preferred embodiments of the alkyl group, alkenyl group and aryl group in the formula (B) are Ｂ１ , R Ｂ２ and R Ｂ３ The alkyl group, alkenyl group, and aryl group in R Ｙ１ , R Ｙ２ and R Ｙ３ is preferably a hydrogen atom or an alkyl group, more preferably a hydrogen atom or a methyl group, and even more preferably a hydrogen atom.

[0113] In formula (Y), L Ｙ１ represents a single bond or —CO—, and —CO— is preferred.

[0114] In formula (Y), L Ｙ２represents a divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms. The aliphatic hydrocarbon group may be linear or branched. As the divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, an alkylene group having 1 to 15 carbon atoms is preferred, and an alkylene group having 1 to 8 carbon atoms is more preferred. Specific examples of suitable groups include a methylene group, an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a methylhexylene group, and a heptylene group. L Ｙ２ -CH which constitutes part of the hydrocarbon group in ２ -, one or more -CH ２ Each - may be independently substituted with -O-, -C(O)O-, or a phenylene group. Ｙ２ Of the hydrogen atoms constituting a part of the hydrocarbon group in the formula (I), one or more hydrogen atoms may be substituted with —OH or the like.

[0115] In formula (Y), Q Ｙ represents a crosslinkable group represented by the above formulas (P1) to (P30), and preferred embodiments are also the same.

[0116] Specific examples of the repeating unit Y are shown below, but the repeating unit Y is not limited to the following structures.

[0117]

[0118] When the specific polymer has a repeating unit Y, the content of the repeating unit Y is preferably 3 to 75% by mass, more preferably 5 to 70% by mass, and even more preferably 10 to 60% by mass, relative to the total repeating units (100% by mass) contained in the specific polymer. When the content of the repeating unit X is within the above range, the effects of the present invention are more excellent, and the degree of orientation of the optically absorptive anisotropic film is more excellent. The repeating unit Y may be contained in the specific polymer alone, or in combination of two or more types. When two or more types of repeating unit Y are contained, the content of the repeating unit Y refers to the total content of the repeating units Y.

[0119] <Repeating Unit Z> The specific polymer may have a repeating unit Z represented by formula Z.

[0120]

[0121] In formula (Z), R Ｚ１ , R Ｚ２ and R Ｚ３ R each independently represents a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group. Ｚ１ , R Ｚ２ and R Ｚ３ Specific examples and preferred embodiments of the alkyl group, alkenyl group and aryl group in the formula (B) are Ｂ１ , R Ｂ２ and R Ｂ３ The alkyl group, alkenyl group, and aryl group in R Ｚ１ , R Ｚ２ and R Ｚ３ is preferably a hydrogen atom or an alkyl group, more preferably a hydrogen atom or a methyl group, and even more preferably a hydrogen atom.

[0122] In formula (Z), L Ｚ１ represents a single bond or —CO—, and —CO— is preferred.

[0123] In formula (Z), L Ｚ２ represents a single bond or a divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms. The aliphatic hydrocarbon group may be linear or branched. Ｚ１ and L Ｚ２ and cannot simultaneously be single bonds. As the divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, an alkylene group having 1 to 15 carbon atoms is preferred, and an alkylene group having 1 to 8 carbon atoms is more preferred. Specific examples of suitable groups include a methylene group, an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a methylhexylene group, and a heptylene group. Ｚ２ -CH which constitutes part of the hydrocarbon group in ２ -, one or more -CH ２ Each - may independently be substituted with -O-.

[0124] In formula (Z), R Ｚ４represents a hydrogen atom, —OH, or an aryl group. Examples of the aryl group include aryl groups having 6 to 30 carbon atoms (preferably 6 to 20 carbon atoms, more preferably 6 to 12 carbon atoms). Specific examples include a phenyl group, a 2,6-diethylphenyl group, a 3,5-ditrifluoromethylphenyl group, a styryl group, a naphthyl group, and a biphenyl group.

[0125] Specific examples of the repeating unit Z are shown below, but the repeating unit Z is not limited to the following structures.

[0126]

[0127] When the specific polymer has a repeating unit Z, the content of the repeating unit Z is preferably 0.05 to 60% by mass, more preferably 0.05 to 30% by mass, even more preferably 0.05 to 10% by mass, and particularly preferably 0.05 to 5% by mass, relative to the total repeating units (100% by mass) contained in the specific polymer. When the content of the repeating unit Z is within the above range, the effects of the present invention are more excellent, and the degree of orientation of the optically absorptive anisotropic film is more excellent. The repeating unit Z may be contained in the specific polymer alone, or in combination of two or more types. When two or more types of repeating units Z are contained, the content of the repeating unit Z refers to the total content of the repeating units Z.

[0128] <Content> The content of the specific polymer is preferably 0.01 to 10 mass %, more preferably 0.02 to 5 mass %, and even more preferably 0.2 to 1.5 mass %, relative to the total solids mass of the liquid crystal composition. When the content of the specific polymer is within the above range, the effects of the present invention are more excellent, and the degree of orientation of the optically absorptive anisotropic film is more excellent. The content of the specific polymer is preferably 0.01 to 10 parts by mass, more preferably 0.02 to 5 parts by mass, and even more preferably 0.2 to 1.5 parts by mass, relative to 100 parts by mass of the total amount of the liquid crystal compound and dichroic substance in the liquid crystal composition. When the content of the specific polymer is within the above range, the effects of the present invention are more excellent, and the degree of orientation of the optically absorptive anisotropic film is more excellent.

[0129] <Mass ratio of specific polymer to dichroic substance> The mass ratio of the content of the specific polymer to the content of the dichroic substance (content of specific polymer / content of dichroic substance) is preferably 0.0007 to 0.6, more preferably 0.0012 to 0.3, and even more preferably 0.008 to 0.15. When this mass ratio is within the above range, the degree of orientation of the optically absorptive anisotropic film is superior. This is presumably due to better compatibility between the specific polymer and the dichroic substance.

[0130] <Molecular Weight> In terms of achieving better effects of the present invention, the weight average molecular weight (Mw) of the specific polymer is preferably 2,000 to 1,000,000, more preferably 3,000 to 200,000, and even more preferably 5,000 to 80,000. Here, the weight average molecular weight of the specific polymer can be measured by the method described in the Examples section below.

[0131] [Other Components] The liquid crystal composition of the present invention may contain components (hereinafter also referred to as "other components") other than the above-mentioned liquid crystal compound, dichroic substance, and specific polymer. Examples of the other components include an interfacial modifier, an alignment agent, a polymerization initiator, and a solvent.

[0132] <Surfactant> The liquid crystal composition of the present invention may contain a surfactant. The inclusion of a surfactant is expected to improve the smoothness of the coated surface, further improve the degree of alignment, and suppress repelling and unevenness, thereby further improving in-plane uniformity. As the surfactant, a fluorine (meth)acrylate polymer as described in, for example, paragraphs

[0018] to

[0043] of JP-A No. 2007-272185 can be used. Compounds other than these can also be used as the surfactant. The surfactant may be used alone or in combination of two or more types. When the liquid crystal composition of the present invention contains a surfactant, the content of the surfactant is preferably 0.01 to 10% by mass, more preferably 0.02 to 5% by mass, based on the total solid mass of the liquid crystal composition.

[0133] <Alignment Agent> The liquid crystal composition of the present invention may contain an alignment agent. Examples of the alignment agent include a boronic acid compound and an onium salt. The boronic acid compound functions as a horizontal alignment agent or a vertical alignment agent. The onium salt functions as a vertical alignment agent. The alignment agent may be used alone or in combination of two or more types.

[0134] The boronic acid compound is preferably a compound represented by formula (30).

[0135] Formula (30)

[0136] In formula (30), R １ and R ２ R each independently represents a hydrogen atom, a substituted or unsubstituted aliphatic hydrocarbon group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. ３ represents a substituent containing a (meth)acrylic group. Specific examples of the boronic acid compound include the boronic acid compounds represented by general formula (I) described in paragraphs 0023 to 0032 of JP-A 2008-225281. Preferred boronic acid compounds include the compounds exemplified below.

[0137]

[0138] Specific examples of the onium salt include the onium salts described in paragraphs 0052 to 0058 of JP-A No. 2012-208397, the onium salts described in paragraphs 0024 to 0055 of JP-A No. 2008-026730, and the onium salts described in JP-A No. 2002-37777.

[0139] When the liquid crystal composition of the present invention contains an aligning agent, the content of the aligning agent is preferably 0.01 to 30% by mass, more preferably 0.1 to 10% by mass, based on the total solid mass of the liquid crystal composition.

[0140] <Polymerization initiator> The liquid crystal composition of the present invention may contain a polymerization initiator. There are no particular restrictions on the polymerization initiator, but it is preferably a photosensitive compound, i.e., a photopolymerization initiator. As the photopolymerization initiator, various compounds can be used without particular restrictions. Examples of photopolymerization initiators include α-carbonyl compounds (U.S. Pat. Nos. 2,367,661 and 2,367,670), acyloin ethers (U.S. Pat. No. 2,448,828), α-hydrocarbon-substituted aromatic acyloin compounds (U.S. Pat. No. 2,722,512), polynuclear quinone compounds (U.S. Pat. Nos. 3,046,127 and 2,951,758), and combinations of triarylimidazole dimers and p-aminophenyl ketones (U.S. Pat. No. 3,549,367). Detailed Description), acridine and phenazine compounds (JP 60-105667 A and U.S. Pat. No. 4,239,850 A), oxadiazole compounds (U.S. Pat. No. 4,212,970 A), o-acyloxime compounds (JP 2016-27384 A

[0065] ), and acylphosphine oxide compounds (JP 63-40799 A, JP 5-29234 A, JP 10-95788 A, and JP 10-29997 A). Commercially available photopolymerization initiators can also be used, and examples thereof include IRGACURE 184, IRGACURE 907, IRGACURE 369, IRGACURE 651, IRGACURE 819, IRGACURE OXE-01, and IRGACURE OXE-02 manufactured by BASF. The polymerization initiator may be used alone or in combination of two or more kinds.

[0141] When the liquid crystal composition of the present invention contains a polymerization initiator, the content of the polymerization initiator is preferably 0.01 to 30% by mass, more preferably 0.1 to 15% by mass, based on the total solid mass of the liquid crystal composition.

[0142] <Solvent> The liquid crystal composition of the present invention preferably contains a solvent from the viewpoint of workability, etc. Examples of the solvent include ketones (e.g., acetone, 2-butanone, methyl isobutyl ketone, cyclopentanone, and cyclohexanone), ethers (e.g., dioxane, tetrahydrofuran, tetrahydropyran, dioxolane, tetrahydrofurfuryl alcohol, and cyclopentyl methyl ether), aliphatic hydrocarbons (e.g., hexane), alicyclic hydrocarbons (e.g., cyclohexane), aromatic hydrocarbons (e.g., benzene, toluene, xylene, and trimethylbenzene), halogenated carbons (e.g., dichloromethane, trichloromethane (chloroform), dichloroethane, dichlorobenzene, and chlorotoluene), and the like. Examples of suitable solvents include organic solvents such as benzene, esters (e.g., methyl acetate, ethyl acetate, butyl acetate, diethyl carbonate, etc.), alcohols (e.g., ethanol, isopropanol, butanol, cyclohexanol, etc.), cellosolves (e.g., methyl cellosolve, ethyl cellosolve, 1,2-dimethoxyethane, etc.), cellosolve acetates, sulfoxides (e.g., dimethyl sulfoxide, etc.), amides (e.g., dimethylformamide, dimethylacetamide, N-methylpyrrolidone, N-ethylpyrrolidone, 1,3-dimethyl-2-imidazolidinone, etc.), and heterocyclic compounds (e.g., pyridine, etc.), as well as water. These solvents may be used alone or in combination of two or more. Among these solvents, organic solvents are preferred because they provide better effects of the present invention, and halogenated carbons or ketones are more preferred.

[0143] When the liquid crystal composition of the present invention contains a solvent, the content of the solvent is preferably 70 to 99% by mass, more preferably 83 to 97% by mass, and even more preferably 85 to 95% by mass, based on the total mass of the liquid crystal composition.

[0144] [Light-absorbing anisotropic film] The light-absorbing anisotropic film of the present invention is a light-absorbing anisotropic film (light-absorbing anisotropic layer) formed using the liquid crystal composition of the present invention described above. The method for producing the light-absorbing anisotropic film of the present invention is not particularly limited. However, because the degree of orientation of the resulting light-absorbing anisotropic film is higher, a method (hereinafter also referred to as the present production method) that includes, in this order, a step of applying the above-described liquid crystal composition to an alignment film to form a coating film (hereinafter also referred to as the "coating film formation step") and a step of orienting the liquid crystal component contained in the coating film (hereinafter also referred to as the "orientation step") is preferred. The liquid crystal component refers to a component that includes not only the above-described liquid crystal compound but also a dichroic substance having liquid crystallinity. Each step is described below.

[0145] [Coating Film Forming Step] The coating film forming step is a step of forming a coating film by coating the above-described liquid crystal composition on an alignment film. By using a liquid crystal composition containing the above-described solvent or a liquid crystal composition that has been converted into a molten liquid or the like by heating or the like, it becomes easy to coat the liquid crystal composition on the alignment film. Examples of methods for coating the liquid crystal composition include known methods such as roll coating, gravure printing, spin coating, wire bar coating, extrusion coating, direct gravure coating, reverse gravure coating, die coating, spraying, and inkjet printing.

[0146] <Alignment Film> The alignment film can be formed by means of rubbing an organic compound (preferably a polymer) onto the film surface, oblique vapor deposition of an inorganic compound, formation of a layer having microgrooves, or accumulation of an organic compound (e.g., ω-tricosanoic acid, dioctadecylmethylammonium chloride, methyl stearate, etc.) by the Langmuir-Blodgett method (LB film). Furthermore, alignment films that exhibit alignment function upon application of an electric field, a magnetic field, or light irradiation are also known. Among these, in the present invention, alignment films formed by rubbing are preferred in terms of ease of control of the pretilt angle of the alignment film, and photo-alignment films formed by light irradiation are also preferred in terms of uniformity of alignment.

[0147] (Rubbing Treatment Alignment Film) Polymer materials used for the alignment film formed by rubbing treatment are described in many literatures, and many commercially available products are available. In the present invention, polyvinyl alcohol or polyimide, and derivatives thereof are preferably used. For details of the alignment film, please refer to the description on page 43, line 24 to page 49, line 8 of WO 2001 / 88574 A1. The thickness of the alignment film is preferably 0.01 to 10 μm, and more preferably 0.01 to 1 μm.

[0148] (Photo-alignment film) Photo-alignment materials used for alignment films formed by light irradiation are described in many documents, etc. In the present invention, for example, azo compounds described in JP-A Nos. 2006-285197, 2007-76839, 2007-138138, 2007-94071, 2007-121721, 2007-140465, 2007-156439, 2007-133184, 2009-109831, Japanese Patent Nos. 3883848 and 4151746, and azo compounds described in JP-A No. 2002-229039 are used. Preferred examples include aromatic ester compounds described in JP-A Nos. 2002-265541 and 2002-317013, maleimide and / or alkenyl-substituted nadimide compounds having a photoalignment unit described in JP-A Nos. 4205195 and 4205198, and photocrosslinkable polyimides, polyamides, or esters described in JP-A Nos. 2003-520878 and 2004-529220, or JP-A No. 4162850. Azo compounds, photocrosslinkable polyimides, polyamides, or esters are more preferred.

[0149] A photo-alignment film formed from the above materials is irradiated with linearly polarized or non-polarized light to produce a photo-alignment film. In this specification, "linearly polarized light irradiation" and "non-polarized light irradiation" refer to operations for causing a photoreaction in the photo-alignment material. The wavelength of the light used varies depending on the photo-alignment material used, and is not particularly limited as long as it is the wavelength necessary for the photoreaction. The peak wavelength of the light used for photoirradiation is preferably 200 nm to 700 nm, and ultraviolet light with a peak wavelength of 400 nm or less is more preferred.

[0150] Examples of light sources used for light irradiation include commonly used light sources, such as lamps such as tungsten lamps, halogen lamps, xenon lamps, xenon flash lamps, mercury lamps, mercury xenon lamps, and carbon arc lamps, various lasers [e.g., semiconductor lasers, helium-neon lasers, argon ion lasers, helium-cadmium lasers, and YAG (yttrium aluminum garnet) lasers], light-emitting diodes, and cathode ray tubes.

[0151] As a means for obtaining linearly polarized light, a method using a polarizer (e.g., an iodine polarizer, a dichroic material polarizer, and a wire grid polarizer), a method using a prism-based element (e.g., a Glan-Thompson prism) or a reflective polarizer utilizing the Brewster angle, or a method using light emitted from a polarized laser light source can be employed. Alternatively, a filter or a wavelength conversion element may be used to selectively irradiate only light of a required wavelength.

[0152] In the case of linearly polarized light, the light is irradiated from the top or back surface of the alignment film perpendicularly or obliquely to the surface of the alignment film. The incident angle of the light varies depending on the photo-alignment material, but is preferably 0 to 90° (perpendicular), and more preferably 40 to 90°. In the case of non-polarized light, the alignment film is irradiated with non-polarized light obliquely. The incident angle is preferably 10 to 80°, more preferably 20 to 60°, and even more preferably 30 to 50°. The irradiation time is preferably 1 to 60 minutes, and more preferably 1 to 10 minutes.

[0153] When patterning is required, a method of irradiating light using a photomask the number of times required to form a pattern, or a method of writing a pattern by laser beam scanning can be used.

[0154] [Orientation Step] The orientation step is a step of orienting the dichroic substance contained in the coating film. This results in the optically absorptive anisotropic film of the present invention. In the orientation step, it is believed that the dichroic substance is oriented along the liquid crystal compound oriented by the orientation film. The orientation step may include a drying treatment. Components such as the solvent can be removed from the coating film by the drying treatment. The drying treatment may be performed by leaving the coating film at room temperature for a predetermined time (e.g., natural drying), or by heating and / or blowing air. Here, the dichroic substance contained in the liquid crystal composition may be aligned by the above-mentioned coating film formation step or drying treatment. For example, in an embodiment in which the liquid crystal composition is prepared as a coating liquid containing a solvent, the coating film may be dried to remove the solvent from the coating film, thereby aligning the dichroic substance contained in the coating film and obtaining the optically absorptive anisotropic film of the present invention.

[0155] The orientation step preferably includes a heat treatment. This further aligns the dichroic material contained in the coating film, resulting in a higher degree of orientation in the resulting optically absorptive anisotropic film. From the standpoint of manufacturability, the heat treatment is preferably performed at a temperature of 10 to 250°C, more preferably 25 to 190°C. The heating time is preferably 1 to 300 seconds, more preferably 1 to 60 seconds.

[0156] The orientation step may include a cooling treatment carried out after the heating treatment. The cooling treatment is a treatment in which the coated film after heating is cooled to about room temperature (20 to 25°C). This further fixes the orientation of the dichroic material contained in the coated film, and the degree of orientation of the resulting optically absorptive anisotropic film is increased. The cooling method is not particularly limited and can be carried out by a known method. The optically absorptive anisotropic film of the present invention can be obtained by the above steps.

[0157] [Other Steps] The present production method may include a step of curing the optically absorptive anisotropic film after the alignment step (hereinafter also referred to as a "curing step"). The curing step is carried out, for example, by heating and / or light irradiation (exposure). Among these, the curing step is preferably carried out by light irradiation. Various light sources such as infrared light, visible light, or ultraviolet light can be used as the light source used for curing, but ultraviolet light is preferred. Furthermore, ultraviolet light may be irradiated while heating during curing, or ultraviolet light may be irradiated through a filter that transmits only specific wavelengths. Furthermore, exposure may be carried out in a nitrogen atmosphere. When the curing of the optically absorptive anisotropic film proceeds by radical polymerization, exposure in a nitrogen atmosphere is preferred because inhibition of polymerization by oxygen is reduced.

[0158] The thickness of the optically absorptive anisotropic film is not particularly limited, but is preferably 0.3 to 10 μm, more preferably 0.5 to 9 μm, in terms of achieving better effects of the present invention.

[0159] The liquid crystal compound and dichroic substance contained in the optically absorptive anisotropic film of the present invention have a fixed alignment state. One embodiment of the optically absorptive anisotropic film of the present invention is one in which the angle θ between the transmittance central axis of the optically absorptive anisotropic film and the normal direction to the surface of the optically absorptive anisotropic film (hereinafter also referred to as "transmittance central axis angle θ") is more than 45° and 90° or less, more preferably 75° or more and 90° or less, and even more preferably 80° or more and 90° or less. A laminate comprising an optically absorptive anisotropic film (polarizer) having a transmittance central axis angle θ of more than 45° and 90° or less and a λ / 4 plate (described later) is suitably used as a circular polarizing plate.

[0160] Another embodiment of the optically absorptive anisotropic film of the present invention is one in which the transmittance central axis angle θ is 0° or more and 45° or less, more preferably 0° or more and 35° or less, and even more preferably 0° or more and less than 35°. A laminate comprising an optically absorptive anisotropic film in which the transmittance central axis angle θ is 0° or more and 45° or less, and a polarizer having an in-plane absorption axis, is suitably used as a viewing angle control film.

[0161] Here, the term "transmittance central axis" refers to the direction that exhibits the highest transmittance when the transmittance is measured by changing the tilt angle (polar angle) and tilt direction (azimuth angle) relative to the normal direction of the optically absorptive anisotropic film surface. Specifically, an AxoScan OPMF-1 (manufactured by OptoScience) is used to measure the Mueller matrix at a wavelength of 550 nm. More specifically, during measurement, the azimuth angle at which the transmittance central axis is tilted is first found, and then, within a plane containing the normal direction of the optically absorptive anisotropic film along that azimuth angle (a plane containing the transmittance central axis and perpendicular to the film surface), the polar angle, which is the angle relative to the normal direction of the optically absorptive anisotropic film surface, is changed in 1° increments from -70 to 70°, and the Mueller matrix at a wavelength of 550 nm is measured, and the transmittance of the optically absorptive anisotropic film is derived. As a result, the direction with the highest transmittance is designated as the transmittance central axis. The transmittance central axis means the direction of the absorption axis (the direction of the long axis of the molecule) of the dichroic material contained in the optically absorptive anisotropic film.

[0162] The transmittance central axis angle θ can be set to a desired value by, for example, adjusting the type and content of the alignment agent.

[0163] [Laminate] The laminate of the present invention has an optically absorbing anisotropic film, and the optically absorbing anisotropic film may be disposed on a substrate. When the laminate of the present invention has a substrate, an alignment film may be disposed between the substrate and the optically absorbing anisotropic film. Hereinafter, each member constituting the laminate of the present invention will be described.

[0164] [Substrate] The substrate is preferably a transparent support. The transparent support refers to a support having a visible light transmittance of 60% or more, preferably 80% or more, and more preferably 90% or more. The transparent support may be any known transparent resin film, transparent resin plate, transparent resin sheet, or the like, and is not particularly limited. The transparent resin film may be a cellulose acylate film (e.g., cellulose triacetate film (refractive index 1.48), cellulose diacetate film, cellulose acetate butyrate film, cellulose acetate propionate film), polyethylene terephthalate film, polyethersulfone film, polyacrylic resin film, polyurethane resin film, polyester film, polycarbonate film, polysulfone film, polyether film, polymethylpentene film, polyether ketone film, (meth)acrylonitrile film, or the like.

[0165] Among these, a cellulose acylate film is preferred, and a cellulose triacetate film is more preferred, because it has high transparency, little optical birefringence, and is easy to manufacture, and is generally used as a protective film for a polarizing plate. The thickness of the substrate is usually 20 to 100 μm. In the present invention, it is particularly preferred that the substrate is a cellulose ester film, and that the film thickness is 20 to 70 μm.

[0166] [Light-Absorption Anisotropic Film] The light-absorption anisotropic film of the present invention is as described above, and therefore, its description will be omitted.

[0167] [Alignment Film] The alignment film (alignment layer) is as described above, and therefore a description thereof will be omitted.

[0168] [λ / 4 Plate] One preferred embodiment of the laminate of the present invention includes an optically absorptive anisotropic film (particularly, an optically absorptive anisotropic film having a transmittance central axis angle θ of more than 45° and not more than 90°) and a λ / 4 plate. Such a laminate (optical film) is suitable for use as a circularly polarizing plate.

[0169] A λ / 4 plate is a plate having a λ / 4 function, specifically, a plate having the function of converting linearly polarized light of a certain wavelength into circularly polarized light (or circularly polarized light into linearly polarized light). For example, specific examples of a λ / 4 plate having a single-layer structure include a stretched polymer film and a retardation film having a light-absorbing anisotropic film with λ / 4 function provided on a support, and specific examples of a λ / 4 plate having a multi-layer structure include a broadband λ / 4 plate formed by laminating a λ / 4 plate and a λ / 2 plate. The λ / 4 plate and the light-absorbing anisotropic film may be provided in contact with each other, or another layer may be provided between the λ / 4 plate and the light-absorbing anisotropic film. Examples of such layers include an adhesive layer or bonding layer for ensuring adhesion, and a barrier layer.

[0170] [Polarizer] Another preferred embodiment of the laminate of the present invention includes an optically absorptive anisotropic film (particularly an optically absorptive anisotropic film having a transmittance central axis angle θ of 0° or more and 45° or less) and a polarizer having an in-plane absorption axis. Such a laminate (optical film) is preferably used as a viewing angle control film used to control the viewing angle. The polarizer is preferably disposed on the side of the optically absorptive anisotropic film opposite the substrate. The polarizer may be disposed so as to be in contact with the surface of the optically absorptive anisotropic film, or may be disposed on the surface of the optically absorptive anisotropic film via another layer (for example, a known adhesive layer or pressure-sensitive adhesive layer).

[0171] The polarizer is not particularly limited as long as it has an absorption axis in its plane and functions to convert light into specific linearly polarized light, and conventionally known polarizers can be used. Examples of polarizers that can be used include iodine-based polarizers, dye-based polarizers using dichroic dyes, and polyene-based polarizers. Iodine-based polarizers and dye-based polarizers include coated polarizers and stretched polarizers, both of which are applicable. Preferred polarizers are those in which a dichroic organic dye is oriented by utilizing the orientation of a liquid crystal compound. Preferred stretched polarizers are those produced by adsorbing iodine or a dichroic dye to polyvinyl alcohol and stretching the resulting mixture. Examples of suitable polarizers include the optically absorptive anisotropic film described in JP 2010-152351 A and containing a horizontally aligned dichroic dye compound that does not contain a liquid crystal compound and is horizontally aligned (in a direction intersecting the thickness direction of the optically absorptive anisotropic film), and the optically absorptive anisotropic film described in WO 2017 / 154907 A and containing a liquid crystal compound and a horizontally aligned dichroic dye compound.

[0172] [Barrier Layer] The laminate of the present invention preferably has a barrier layer together with the optically absorptive anisotropic film. Here, the barrier layer is also called a gas barrier layer (oxygen barrier layer), and has the function of protecting the polarizing element of the present invention from gases such as oxygen in the atmosphere, moisture, or compounds contained in adjacent layers. The laminate of the present invention preferably has a barrier layer having an oxygen permeability coefficient of 200 cc / m or more in the layer adjacent to the optically absorptive anisotropic film, for the reason that durability is further improved. ２ It is preferable that the barrier layer has an oxygen permeability of 50 cc / m or less. ２ It is more preferable that the optically absorptive anisotropic film has a barrier layer having an oxygen permeability coefficient of 200 cc / m or less other than the barrier layer. ２ If there is a layer where the permeability is 1 / 4 day atm or less, a barrier layer does not need to be provided. Here, the oxygen permeability coefficient is an index representing the amount of oxygen passing through a membrane per unit time and unit area, and in the present invention, a value measured with an oxygen concentration device (for example, Model 3600 manufactured by Hack Ultra Analytical) in an environment of 25°C and 50% relative humidity (RH) is used.

[0173] The organic compound contained in the barrier layer has a high oxygen blocking function, and examples of the organic compound include a polymerizable compound with high hydrogen bonding ability and a compound having many polymerizable groups per molecular weight. Examples of the compound having many polymerizable groups per molecular weight include pentaerythritol tetra(meth)acrylate and dipentaerythritol hexa(meth)acrylate.

[0174] Examples of polymerizable compounds with high hydrogen bonding properties include epoxy compounds, and specifically, compounds represented by the following formula are included. Among these, 3',4'-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate represented by CEL2021P below is preferred.

[0175]

[0176] From the viewpoint of preventing diffusion of the dichroic dye in the light absorption anisotropic layer during durability testing, it is also preferable to use, as the barrier layer, a polymer having a hydrophilic group as described in

[0056] of WO 2019-22121 or a water-soluble polymer as described in

[0117] to

[0133] of JP 2017-083843 A. In addition, reference can be made to the descriptions in paragraphs

[0014] to

[0054] of JP 2014-159124 A, paragraphs

[0042] to

[0075] of JP 2017-121721 A, paragraphs

[0045] to

[0054] of JP 2017-115076 A, paragraphs

[0010] to

[0061] of JP 2012-213938 A, and paragraphs

[0021] to

[0031] of JP 2005-169994 A.

[0177] [Adhesive Layer] The laminate of the present invention may or may not have a pressure-sensitive adhesive layer. Examples of the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer include pressure-sensitive adhesives and adhesives. Examples of pressure-sensitive adhesives include rubber-based pressure-sensitive adhesives, acrylic-based pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, vinyl alkyl ether-based pressure-sensitive adhesives, polyvinyl alcohol-based pressure-sensitive adhesives, polyvinylpyrrolidone-based pressure-sensitive adhesives, polyacrylamide-based pressure-sensitive adhesives, and cellulose-based pressure-sensitive adhesives, with acrylic-based pressure-sensitive adhesives (pressure-sensitive adhesives) being preferred. Examples of adhesives include polyvinyl alcohol adhesives (water glues), solvent-based adhesives, emulsion-based adhesives, solventless adhesives, active energy ray-curable adhesives, and heat-curable adhesives. Examples of active energy ray-curable adhesives include electron beam-curable adhesives, ultraviolet ray-curable adhesives, and visible light-curable adhesives, with ultraviolet ray-curable adhesives being preferred.

[0178] The thickness of the pressure-sensitive adhesive layer is not particularly limited, but from the viewpoint of thinning, it is preferably 25 μm or less, more preferably 15 μm or less, and even more preferably 5 μm or less. The lower limit is not particularly limited, and it is often 0.1 μm or more.

[0179] From the viewpoint of simplification and thinning, it is also preferable to provide the pressure-sensitive adhesive layer with the function of improving the durability of the barrier layer, thereby eliminating the barrier layer and configuring the optically absorbing anisotropic layer and the pressure-sensitive adhesive layer adjacent to each other. For example, a configuration in which an alignment layer / optically absorbing anisotropic layer / pressure-sensitive adhesive layer / retardation layer are arranged adjacent to each other can be mentioned. In this case, the pressure-sensitive adhesive layer is preferably, for example, an adhesive containing polyvinyl alcohol as a main component, a UV (ultraviolet) adhesive with low oxygen permeability, or a pressure-sensitive adhesive having a hydrophilic group-containing polymer, from the viewpoint of preventing diffusion of the dichroic substance in the optically absorbing anisotropic layer during durability testing.

[0180] [Reflective Linear Polarizer] The image display device of the present invention may include a reflective linear polarizer. The reflective linear polarizer has the effect of reflecting a portion of the light emitted from the image display panel and causing the light to travel back and forth within the optical system. From the viewpoint of suppressing stray light and ghosting, the reflective linear polarizer preferably has a high degree of polarization. As the reflective linear polarizer, a film obtained by stretching a dielectric multilayer film, such as that described in JP 2011-053705 A, and a wire grid polarizer, etc., can be used. As commercially available products, reflective polarizers (product names APF, IQPE) manufactured by 3M and wire grid polarizers (product name WGF) manufactured by Asahi Kasei Corporation can be suitably used.

[0181] [Image Display Device] The display device (image display device) of the present invention comprises the optically absorptive anisotropic film (preferably the laminate) and a display element. The optically absorptive anisotropic film and the liquid crystal cell may be laminated via a known adhesive layer or pressure-sensitive adhesive layer. The display element used in the display device of the present invention is not particularly limited, and examples thereof include liquid crystal cells, organic electroluminescence (hereinafter abbreviated as "EL") display panels, and plasma display panels. Among these, a liquid crystal cell or an organic EL display panel is preferred. That is, the display device of the present invention is preferably a liquid crystal display device using a liquid crystal cell as the display element, or an organic EL display device using an organic EL display panel as the display element. Some image display devices are thin and can be molded into curved surfaces. The optically absorptive anisotropic film used in the present invention is thin and easily bendable, making it suitable for use in image display devices with curved display surfaces. Furthermore, some image display devices have a pixel density of over 250 ppi, enabling high-resolution display. The optically absorptive anisotropic film used in the present invention can be suitably applied to such high-definition image display devices without causing moire.

[0182] [Liquid Crystal Display Device] A preferred example of a liquid crystal display device according to the present invention is one having the above-described viewing angle control film and a liquid crystal cell. A specific configuration includes a configuration in which the viewing angle control film is disposed on a front-side polarizing plate or a rear-side polarizing plate. These configurations enable viewing angle control in which light is blocked in the vertical or horizontal directions. Furthermore, viewing angle control films may be disposed on both the front-side polarizing plate and the rear-side polarizing plate. This configuration enables viewing angle control in which light is blocked in all directions and light is transmitted only in the front direction. Furthermore, multiple viewing angle control films may be laminated via retardation layers. Controlling the retardation value and optical axis direction allows for control of transmission and light-blocking performance. For example, arranging a polarizer, a viewing angle control film, a λ / 2 wavelength plate (the axis angle of which is shifted by 45° relative to the orientation direction of the polarizer), and a viewing angle control film enables viewing angle control in which light is blocked in all directions and light is transmitted only in the front direction. As the retardation layer, a positive A plate, a negative A plate, a positive C plate, a negative C plate, a B plate, an O plate, or the like can be used. From the viewpoint of thinning the viewing angle control system, the thickness of the retardation layer is preferably as thin as possible as long as it does not impair optical properties, mechanical properties, and manufacturability, and specifically, is preferably 1 to 150 μm, more preferably 1 to 70 μm, and even more preferably 1 to 30 μm. The liquid crystal cell constituting the liquid crystal display device will be described in detail below.

[0183] <Liquid Crystal Cell> The liquid crystal cell used in the liquid crystal display device is preferably, but not limited to, a VA (Vertical Alignment) mode, an OCB (Opticaly Compensated Bend) mode, an IPS (In-Plane-Switching) mode, or a TN (Twisted Nematic) mode. In a TN mode liquid crystal cell, rod-shaped liquid crystal molecules are aligned substantially horizontally when no voltage is applied, and are further aligned with a twist angle of 60 to 120 degrees. TN mode liquid crystal cells are most commonly used as color TFT liquid crystal display devices, and are described in many literatures. In a VA mode liquid crystal cell, rod-shaped liquid crystal molecules are aligned substantially vertically when no voltage is applied. VA mode liquid crystal cells include (1) narrowly defined VA mode liquid crystal cells in which rod-shaped liquid crystal molecules are aligned substantially vertically when no voltage is applied and substantially horizontally when voltage is applied (described in JP-A-2-176625), (2) multi-domain VA mode liquid crystal cells (described in SID97, Digest of Tech. Papers (Proceedings) 28 (1997) 845) in order to widen the viewing angle (MVA mode liquid crystal cells), (3) n-ASM mode liquid crystal cells in which rod-shaped liquid crystal molecules are aligned substantially vertically when no voltage is applied and substantially horizontally when voltage is applied (described in Proceedings of the Japan Liquid Crystal Symposium 58-59 (1998)), and (4) SURVIVAL mode liquid crystal cells (announced at LCD International 98). The liquid crystal display may be of any of a PVA (Patterned Vertical Alignment) type, an optical alignment type, and a PSA (Polymer-Sustained Alignment) type. Details of these modes are described in detail in Japanese Patent Laid-Open No. 2006-215326 and Japanese Patent Laid-Open No. 2008-538819.

[0184] In an IPS mode liquid crystal cell, the liquid crystal compound is oriented substantially parallel to the substrate, and when an electric field parallel to the substrate surface is applied, the liquid crystal molecules respond in a planar manner. That is, when no electric field is applied, the liquid crystal compound is oriented in-plane. In an IPS mode, when no electric field is applied, a black display is achieved, and the absorption axes of a pair of upper and lower polarizing plates are perpendicular to each other. Methods of using an optical compensation sheet to reduce light leakage during black display in an oblique direction and improve the viewing angle are disclosed in, for example, JP-A Nos. 10-54982, 11-202323, 9-292522, 11-133408, 11-305217, and 10-307291.

[0185] [Organic EL Display Device] An organic EL display device, which is an example of the display device of the present invention, preferably has, from the viewing side, the above-mentioned circular polarizer and an organic EL display panel. In this case, the substrate, the light absorption anisotropic film, and the λ / 4 plate are arranged in this order from the viewing side. The organic EL display panel is a display panel configured using an organic EL element in which an organic light-emitting layer (organic electroluminescence layer) is sandwiched between electrodes (between a cathode and an anode). The configuration of the organic EL display panel is not particularly limited, and a known configuration may be used.

[0186] [Virtual reality display device] A first aspect of the virtual reality display device, which is an example of the display device of the present invention, is a virtual reality display device having, in this order, an image display panel, a first absorptive linear polarizer (light-absorbing anisotropic layer), a first retardation layer, a second retardation layer, a reflective linear polarizer, a third retardation layer, a half mirror, and a second absorptive linear polarizer (light-absorbing anisotropic film). A second aspect is a virtual reality display device having, in this order, an image display panel, a first absorptive linear polarizer, a first retardation layer, a half mirror, a reflective circular polarizer, a second retardation layer, and a second absorptive linear polarizer. A third aspect is a virtual reality display device having, in this order, an image display panel, a first absorptive linear polarizer, a first retardation layer, a half mirror, a second retardation layer, a reflective linear polarizer, and a second absorptive linear polarizer. Furthermore, it is also preferable that a fourth retardation layer be provided on the viewing side of the second absorptive linear polarizer.

[0187] The virtual reality display device of the present invention can use a lens-shaped curved substrate as a base material (for example, a component between the second retardation layer 12 and the half mirror 40 in FIG. 1 ). In this case, the light-absorbing anisotropic layer or laminate of the present invention can be processed into a three-dimensional curved surface and used. FIG. 1 is a side view schematically showing one embodiment of the virtual reality display device of the present invention. The virtual reality display device 100 of FIG. 1 has, from the viewing side, a second absorbing linear polarizer 22, a second retardation layer 12, a half mirror 40, an antireflection layer 50, a reflective circular polarizer 30, a positive C plate 60, a first retardation layer 11, a first absorbing linear polarizer 21, a third retardation layer 13, and an image display panel 70 arranged in this order.

[0188] [Specific Polymer] The present invention also relates to the following specific polymer. The specific polymer of the present invention is a polymer having a repeating unit A-1 represented by formula (A-1) and at least one repeating unit selected from a repeating unit B represented by formula (B) and a repeating unit D represented by formula (D). The repeating unit A-1, the repeating unit B and the repeating unit D in the specific polymer of the present invention are all as explained above in relation to the specific polymer contained in the liquid crystal composition of the present invention, and therefore explanations thereof will be omitted.

[0189] The present invention will be described in more detail below with reference to examples. The materials, amounts used, ratios, treatment details, and treatment procedures shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be construed as being limited by the examples shown below.

[0190] Synthesis Example 1 Copolymer B1 was synthesized according to the following procedure.

[0191]

[0192] 5.3 g of methyl ethyl ketone (MEK) was placed in a reaction vessel and heated under a nitrogen stream until the internal temperature reached 80°C. A mixed solution of 9.75 g of 4-acryloylmorpholine (Tokyo Chemical Industry Co., Ltd.), 5.25 g of Monomer K-1 (Silaplane TM-0701T, JNC Corporation), 0.5 g of 2,2'-azobis(2-methylpropionate)dimethyl (trade name "V-601", Fujifilm Wako Pure Chemical Industries, Ltd.), and 15.0 g of methyl ethyl ketone was added dropwise over 3 hours, and a polymerization reaction was carried out at 80°C. After completion of the dropwise addition, a solution of 0.10 g of 2,2'-azobis(2-methylpropionate)dimethyl in methyl ethyl ketone (1.0 g) was added, and the mixture was stirred at 80°C for 5 hours to obtain a methyl ethyl ketone solution of copolymer B1. The resulting copolymer B1 was analyzed by gel permeation chromatography (GPC), and found to have a weight average molecular weight (Mw) of 18,000 (polystyrene equivalent). The weight average molecular weight (Mw) was calculated in polystyrene equivalent terms by gel permeation chromatography (EcoSEC HLC-8320GPC (manufactured by Tosoh Corporation) using tetrahydrofuran as the eluent, a flow rate of 0.35 mL / min, and a temperature of 40°C, and the columns used were TSKgel SuperHZM-H, TSKgel SuperHZ4000, and TSKgel SuperHZ200 (manufactured by Tosoh Corporation)). The Mw of each copolymer described below was also measured in the same manner as for copolymer B1.

[0193] [Synthesis Examples 2 to 6] Copolymers B2 to B5 and B'3 represented by the formulas described below were obtained in the same manner as in Synthesis Example 1, except that the monomers and compositional ratios used in Synthesis Example 1 were changed to monomers and compositional ratios that respectively form repeating units of the copolymers.

[0194] Synthesis Example 7 Copolymer B6 was synthesized by the following procedure.

[0195]

[0196] Specifically, 6 g of compound D-1, 4 g of monomer K-1 (Silaplane TM-0701T, manufactured by JNC Corporation), and 30 mg of dimethyl 2,2'-azobis(2-methylpropyleneate) (trade name "V-601", manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) were dissolved in 18 g of dimethylacetamide (DMAc), and the solution was added dropwise over 3 hours to 8 g of dimethylacetamide heated to 80°C under a nitrogen stream. After completion of the dropwise addition, the mixture was heated at 80°C for 4 hours. Next, １ After confirming the disappearance of the polymerizable groups by H-NMR (Nuclear Magnetic Resonance) spectroscopy, the reaction mixture was added to 250 mL of distilled water and filtered. The residue was washed with distilled water and hexane to obtain 7.1 g of copolymer B6 as a white solid. The weight-average molecular weight (Mw) of the obtained copolymer B6 was 14,000.

[0197] The compound D-1 used in the synthesis was synthesized according to the following scheme.

[0198]

[0199] Specifically, 22 g of methanesulfonyl chloride (MsCl) was added to 48.5 mL of tetrahydrofuran (THF) and cooled until the internal temperature reached 0°C. A solution pre-dissolved in 26 mL of a mixed solvent in which the mass ratio of THF to dimethylacetamide was 33:67, 48.5 g of compound (a1), 0.36 g of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO), and 28 g of diisopropylethylamine (DIPEA) was added dropwise so that the internal temperature did not rise above 10°C. After stirring for 30 minutes at 0°C, 38 mL of a dimethylacetamide solution of 25 g of acetaminophen was added. 6.85 g of N-methylimidazole and 20 g of triethylamine were added thereto, and the mixture was stirred at 0°C for 60 minutes, after which the temperature was raised to room temperature. Subsequently, 30 mL of distilled water and 30 mL of dimethylacetamide were added, and the mixture was heated to 40°C and stirred until the solid was completely dissolved. 300 ml of methanol was gradually added to the contents of the flask, and the reaction product was reprecipitated by stirring while cooling to an internal temperature of 5°C. The precipitate was filtered, and the residue was washed with distilled water and hexane to obtain 58 g of compound D-1 as a white solid. １The H-NMR is shown below. １ H-NMR (solvent: CDCl ３ ) δ (ppm): 1.92 (br, 4H), 2.16 (t, 3H), 4.09 (t, 2H), 4.26 (t, 2H), 5.84 (dd, 1H), 6.13 ( q, 1H), 6.62 (dd, 1H), 6.96 (2H), 7.12 (m, 2H), 7.51 (m, 2H), 7.84 (br, 1H), 8.13 (m, 2H)

[0200] [Synthesis Examples 8 to 13] Copolymers B7 to B11 and B'2 represented by the formulas described below were obtained in the same manner as in Synthesis Example 7, except that the monomers and compositional ratios used in Synthesis Example 6 were changed to the monomers and compositional ratios that respectively form the repeating units of the copolymer.

[0201] Synthesis Example 14 Copolymer B12 was synthesized by the following procedure.

[0202]

[0203] A 200 mL three-neck flask equipped with a stirrer, a condenser, a nitrogen inlet tube, and a thermometer was charged with 16.0 g of cyclohexanone / isopropanol = 8 / 2 (mass ratio), the internal temperature was raised to 80 ° C, and the atmosphere was purged with nitrogen gas. A solution containing 31.5 g of Monomer K-1 (Silaplane TM-0701T, manufactured by JNC Corporation), 4.4 g of Monomer D-2, 2.1 g of acrylic acid (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.), 1.1 g of 1,3-propanediol (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.), 0.6 g of 2,2'-azobis(2-methylpropylene)dimethyl (trade name "V-601", manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.), and 72.2 g of cyclohexanone / isopropanol = 8 / 2 (mass ratio) was added dropwise over 3 hours. Further, 0.5 g of dimethyl 2,2'-azobis(2-methylpropylene)ate and a mixed solution of 7.3 g of cyclohexanone / isopropanol = 8 / 2 (weight ratio) were added, and the mixture was stirred at an internal temperature of 80 ° C. for 5 hours. After that, 4.1 g of glycidyl methacrylate (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.), 1.5 g of tetrabutylammonium bromide (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.), 0.1 g of hydroquinone monomethyl ether (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.), and 16.8 g of cyclohexanone / isopropanol = 8 / 2 (weight ratio) were added, and the internal temperature was raised to 85 ° C., and the mixture was reacted for 8 hours to obtain copolymer B12. The weight average molecular weight (Mw) of copolymer B12 was 15,000.

[0204] [Synthesis Examples 15 and 16] Copolymers B13 and B14 were obtained in the same manner as in Synthesis Example 7, except that the monomers and compositional ratios used in Synthesis Example 7 were changed to the monomers and compositional ratios forming the repeating units of each copolymer.

[0205] The structures of copolymers B1 to B14 and B'2 to B'3 are shown below. The numerical value attached to each repeating unit indicates the content (% by mass) of each repeating unit relative to the total repeating units (100% by mass) contained in the copolymer. In the formulae below, TMS represents a trimethylsilyl group, and nBu represents a normal butyl group.

[0206]

[0207]

[0208]

[0209]

[0210] [Example 1-1] [Preparation of Cellulose Acylate Film 1] <Preparation of Core Layer Cellulose Acylate Dope> The following composition was placed in a mixing tank and stirred to dissolve each component, thereby preparing a cellulose acetate solution to be used as the core layer cellulose acylate dope.

[0211] Core layer cellulose acylate dope ------------------------------------------------ Cellulose acetate having an acetyl substitution degree of 2.88: 100 parts by mass Polyester compound B described in the examples of JP-A No. 2015-227955: 12 parts by mass Compound F below: 2 parts by mass Methylene chloride (first solvent): 430 parts by mass Methanol (second solvent): 64 parts by mass

[0212]

[0213] <Preparation of Outer Layer Cellulose Acylate Dope> 10 parts by weight of the following matting agent solution was added to 90 parts by weight of the above core layer cellulose acylate dope to prepare a cellulose acetate solution to be used as the outer layer cellulose acylate dope.

[0214] Matting agent solution - Silica particles with an average particle size of 20 nm (AEROSIL R972, manufactured by Nippon Aerosil Co., Ltd.) 2 parts by mass Methylene chloride (first solvent) 76 parts by mass Methanol (second solvent) 11 parts by mass The above-mentioned cellulose acylate dope for the core layer 1 part by mass

[0215] <Preparation of Cellulose Acylate Film 1> The core layer cellulose acylate dope and the outer layer cellulose acylate dope were filtered through a filter paper with an average pore size of 34 μm and a sintered metal filter with an average pore size of 10 μm. The core layer cellulose acylate dope and the outer layer cellulose acylate dope on both sides were simultaneously cast onto a drum at 20°C through a casting nozzle (band caster). The film was then peeled off while the solvent content was approximately 20% by mass. Both ends of the film in the width direction were fixed with tenter clips, and the film was stretched transversely at a stretch ratio of 1.1 times while being dried. The film was then further dried by conveying it between the rolls of a heat treatment device to prepare an optical film with a thickness of 40 μm, which was designated as Cellulose Acylate Film 1 (Support 1). The in-plane retardation of the resulting Cellulose Acylate Film 1 was 0 nm.

[0216] [Preparation of Photo-Alignment Layer PA1] The coating liquid PA1 for forming an alignment layer, which will be described later, was continuously applied onto the cellulose acylate film 1 using a wire bar. The support on which the coating film was formed was dried with hot air at 140°C for 120 seconds, and then the coating film was irradiated with polarized ultraviolet light (10 mJ / cm ２ The photo-alignment layer PA1 was formed by irradiating the TAC film with the photo-alignment layer (using an ultra-high pressure mercury lamp). The photo-alignment layer PA1 had a thickness of 0.5 μm.

[0217] -------------------------------------------------- (Coating liquid PA1 for forming alignment layer) -------------------------------------------------- Polymer PA1 (shown below) 100.00 parts by mass Acid generator PAG-1 (shown below) 8.00 parts by mass Acid generator CPI-110TF (shown below) 0.005 parts by mass Xylene 1220.00 parts by mass Methyl isobutyl ketone 122.00 parts by mass --------------------------------------------------

[0218]

[0219]

[0220]

[0221] [Preparation of Optically Absorbent Anisotropic Film 1-1] The following liquid crystal composition 1-1 was continuously applied onto the obtained photo-alignment layer PA1 using a wire bar to form a coating layer. The coating layer was then heated at 140°C for 30 seconds and cooled to room temperature (23°C). It was then heated at 90°C for 60 seconds and cooled again to room temperature. Thereafter, an LED (Light Emitting Diode) lamp (center wavelength 365 nm) was used to illuminate the coating layer at an illuminance of 200 mW / cm. ２ The optically absorptive anisotropic film 1-1 was produced on the photo-alignment layer PA1 by irradiating the film for 2 seconds under the irradiation conditions of 1. In this way, a laminate 1-1 was obtained in which the optically absorptive anisotropic film 1-1 was formed on the photo-alignment layer PA1 of the TAC film with the photo-alignment layer. The film thickness of the optically absorptive anisotropic film 1 was 0.5 μm. -------------------------------- Composition of liquid crystal composition 1-1------------------------------------------------ 2.23 parts by mass of polymer liquid crystal compound P1 described below 0.95 parts by mass of low molecular weight liquid crystal compound L1 described below 0.09 parts by mass of dichroic material Y1 described below 0.20 parts by mass of dichroic material M1 described below 0.41 parts by mass of dichroic material C1 described below 0.14 parts by mass of polymerization initiator I1 (IRGACUREOXE-02, manufactured by BASF) 0.027 parts by mass of copolymer B1 described above 53.90 parts by mass of cyclopentanone 23.10 parts by mass of tetrahydrofuran --------------------------------

[0222]

[0223] Both the high molecular weight liquid crystal compound P1 and the low molecular weight liquid crystal compound L1 are rod-like liquid crystal compounds.

[0224] [Examples 1-2 to 1-13, Comparative Examples 1-1 to 1-3] Laminates of Examples 1-2 to 1-13 and Comparative Examples 1-1 to 1-3 were obtained in the same manner as in Example 1-1, except that the composition of liquid crystal composition 1-1 was changed to the composition shown in Table 1 below.

[0225] Examples 1-14 and 1-15 Laminates of Examples 1-14 and 1-15 were obtained in the same manner as in Example 1-1, except that the composition of liquid crystal composition 1-1 was changed to the composition shown in Table 1 below.

[0226] Among the components indicated by symbols in Table 1, an overview of those other than those already indicated is shown below. The numerical value in parentheses for each repeating unit indicates the content (% by mass) of each repeating unit relative to all repeating units contained in each polymer. The high molecular weight liquid crystal compounds P2 to P3 and the low molecular weight liquid crystal compounds L2 to L3 are all rod-shaped liquid crystal compounds.

[0227]

[0228]

[0229] The low molecular weight liquid crystal compound L3 is a mixture of the following rod-shaped liquid crystal compounds: In the following formula, the numerical values ​​represent mass % and R represents a group bonded via an oxygen atom.

[0230]

[0231]

[0232] Polymer B'1: Polyether-modified silicone (manufactured by Evonik Tego Chemie, trade name "FLOW 425")

[0233] [Evaluation] [Haze] Each laminate of the Examples and Comparative Examples was set on a sample stage with a linear polarizer inserted on the light source side of an optical microscope (Nikon Corporation, product name "ECLIPSE E600 POL"), and the haze was evaluated visually. The better the haze evaluation, the more suppressed the alignment defects were. The results are shown in Table 1. A: No haze visible on the entire surface. B: Slight haze visible in some areas. C: Cloudiness visible on the entire surface.

[0234] [Cleaning] The laminate was sandwiched between two polarizing plates arranged in crossed Nicols and observed, and the laminate was rotated in a horizontal plane to check the state of light and darkness. The presence or absence of cissing during application was checked from the state of light and darkness for the optically absorptive anisotropic film in the laminate. The results are shown in Table 1. Note that a score of C or higher is within the acceptable range. A: No cissing observed visually over the entire surface B: Cracks observed visually in a portion C: Cracks observed visually over a wide area D: Cracks observed visually over the entire surface

[0235] [Orientation Degree] With a linear polarizer inserted on the light source side of an optical microscope (Nikon Corporation, product name "ECLIPSE E600 POL"), each laminate of the Examples and Comparative Examples was set on a sample stage, and the absorbance of the optically absorptive anisotropic film in the wavelength range of 380 nm to 780 nm was measured at 1 nm intervals using a multichannel spectrometer (Ocean Optics, product name "QE65000"), and the orientation degree in the range of 400 nm to 700 nm was calculated using the following formula. Based on the obtained orientation degree, the orientation degree was evaluated according to the following evaluation criteria. The results are shown in Table 1. Orientation Degree: S = ((Az0 / Ay0) - 1) / ((Az0 / Ay0) + 2) In the above formula, "Az0" represents the absorbance for polarized light in the absorption axis direction of the optically absorptive anisotropic film, and "Ay0" represents the absorbance for polarized light in the transmission axis direction of the optically absorptive anisotropic film. A: Degree of orientation is 0.95 or more B: Degree of orientation is 0.88 or more but less than 0.95 C: Degree of orientation is less than 0.88 Note that, since none of the layer structures other than the optically absorptive anisotropic film contained in the laminate has absorption in the range of 400 to 700 nm, the degree of orientation calculated above can be interpreted as the value of the optically absorptive anisotropic film contained in the laminate.

[0236] [Transmittance Central Axis Angle θ] When the transmittance central axis angle θ was measured by the above-mentioned method using the laminates of the Examples and Comparative Examples, the transmittance central axis angle θ was in the range of 80 to 90° for all of the laminates of the Examples and Comparative Examples. Note that, since none of the layer structures other than the optically absorptive anisotropic film in the laminate exhibits absorption anisotropy, the transmittance central axis angle θ calculated above can be interpreted as the value for the optically absorptive anisotropic film in the laminate.

[0237]

[0238] In Table 1, "mass ratio relative to dichroic material" means the mass ratio of the copolymer content to the dichroic material content in the liquid crystal composition (copolymer content / dichroic material content).

[0239] As shown in Table 1, it was shown that by using a liquid crystal composition containing a specific polymer, cissing during the formation of the optically absorptive anisotropic film was suppressed, and an optically absorptive anisotropic film in which the occurrence of alignment defects was suppressed could be formed (Examples 1-1 to 1-15). A comparison of Examples 1-1 and 1-2 with Example 1-5 showed that when a specific polymer having repeating unit B was used, alignment defects (haze) could be further suppressed, and an optically absorptive anisotropic film with an excellent degree of alignment could be formed. A comparison of Examples 1-6 and 1-7 with Example 1-5 showed that when a specific polymer having repeating unit D was used, cissing and alignment defects (haze) could be further suppressed, and an optically absorptive anisotropic film with an excellent degree of alignment could be formed. A comparison of Example 1-8 with Example 1-9 showed that when R in repeating unit B was used, Ｂ４ and R Ｂ５ It was shown that when the total molecular weight of the groups corresponding to is 100 or less, orientation defects (haze) can be further suppressed, and an optically absorptive anisotropic film with an excellent degree of orientation can be formed. Comparison between Example 1-8 and Example 1-11 showed that when the content of repeating unit D is 20 mass% or more with respect to the total mass of the specific polymer, repelling can be further suppressed. Comparison between Example 1-8 and Example 1-12 showed that when a polymeric liquid crystal compound is used, orientation defects (haze) can be further suppressed, and an optically absorptive anisotropic film with an excellent degree of orientation can be formed.

[0240] In contrast, when a liquid crystal composition not containing a specific polymer was used, repelling could not be sufficiently suppressed during the formation of an optically absorptive anisotropic film, and alignment defects in the resulting optically absorptive anisotropic film could not be sufficiently suppressed (Comparative Examples 1-1 to 1-3).

[0241] [Example 2-1] [Formation of alignment film 2] The following alignment film-forming composition 1 was continuously applied onto a cellulose acylate film (40 μm thick TAC substrate: TG40, manufactured by Fujifilm Corporation) using a wire bar. The cellulose acylate film on which the coating film was formed was dried with hot air at 140° C. for 120 seconds to form alignment film 2, thereby obtaining a TAC film with an alignment film. The thickness of alignment film 2 was 0.5 μm. ------------------------------------------------------------------ (Alignment film forming composition 2) ------------------------------------------------------------------ Polymer PA2 (described below) 100.00 parts by mass Acid generator PAG-1 (described below) 8.25 parts by mass Stabilizer DIPEA (described below) 0.6 parts by mass Methyl ethyl ketone 250.36 parts by mass Butyl acetate 1001.42 parts by mass

[0242]

[0243] [Preparation of Optically Absorbent Anisotropic Film 2-1] The following liquid crystal composition 2-1 was continuously applied onto the obtained alignment film 2 using a wire bar, heated at 120°C for 60 seconds, and then cooled to room temperature (23°C). Next, it was heated at 85°C for 60 seconds and cooled again to room temperature. Thereafter, an LED (light emitting diode) lamp (center wavelength 365 nm) was used to illuminate the liquid crystal composition 2-1 at an illuminance of 200 mW / cm. ２The light was irradiated for 2 seconds under the irradiation conditions of 1.0 to 1.25, thereby forming an optically absorptive anisotropic film 2-1 on the alignment film 2. The film thickness of the optically absorptive anisotropic film 2-1 was 3.5 μm. 0.004 parts by mass of the copolymer B12; 0.148 parts by mass of the following alignment agent D1; 0.148 parts by mass of the following alignment agent D2; 0.148 parts by mass of the following polymerization initiator (IRGACUREOXE-02, manufactured by BASF); 87.000 parts by mass of cyclopentanone.

[0244]

[0245]

[0246]

[0247] [Formation of Barrier Layer B1] The following barrier layer-forming composition B1 was continuously applied to the obtained optically absorptive anisotropic film 2-1 using a wire bar to form a coating film. The support on which the coating film had been formed was then dried with hot air at 60°C for 60 seconds and then with hot air at 100°C for 120 seconds to form a barrier layer B1, which was used as a laminate 2-1. The thickness of the barrier layer was 0.5 μm. ---------------------------------------------------------------- (Barrier layer-forming composition B1) ---------------------------------------------------------------- Modified polyvinyl alcohol PVA-1 (shown below) 3.80 parts by mass 0.20 parts by mass IRGACURE 2959 70 parts by mass Water 30 parts by mass Methanol ----------------------------------------------------------------

[0248]

[0249] The transmittance central axis angle θ was measured by the method described above using the produced laminate 2-1, and was found to be 0°. Note that, since none of the layer structures other than the optically absorptive anisotropic film 2-1 in the laminate 2-1 have absorption anisotropy, the transmittance central axis angle θ calculated above can be interpreted as the value of the optically absorptive anisotropic film 2-1 in the laminate 2-1.

[0250] Comparative Example 2-1 A laminate of Comparative Example 2-1 was obtained in the same manner as in Example 2-1, except that the copolymer B13 used in the liquid crystal composition 2-1 was changed to the above-mentioned copolymer B'1.

[0251] [Evaluation] The laminates of Example 2-1 and Comparative Example 2-1 were used to evaluate the haze and cissing described above. The results are shown in Table 2.

[0252]

[0253] As shown in Table 2, it was demonstrated that when a liquid crystal composition containing a specific polymer was used, cissing was suppressed during the formation of the optically absorptive anisotropic film, and an optically absorptive anisotropic film in which the occurrence of alignment defects was suppressed could be formed (Example 2-1). In contrast, when a liquid crystal composition not containing a specific polymer was used, cissing was not sufficiently suppressed during the formation of the optically absorptive anisotropic film, and alignment defects in the resulting optically absorptive anisotropic film could not be sufficiently suppressed (Comparative Example 2-1).

[0254] [Fabrication of Display Devices] Display devices 1 and 2 were fabricated using the laminate 1-14 prepared in Example 1-14 by the method described below, and it was confirmed that the laminate of the present invention functions sufficiently as an optically absorptive anisotropic film.

[0255] [Preparation of Retardation Layer Film 1 Having Positive A Plate] A coating solution E1 for forming a photo-alignment film having the following composition was continuously coated on the above-mentioned cellulose acylate film 1 using a wire bar. The cellulose acylate film 1 on which the coating film was formed was dried with hot air at 140°C for 120 seconds, and then the coating film was irradiated with polarized ultraviolet light (10 mJ / cm ２ , using an ultra-high pressure mercury lamp) to form a photo-alignment film E1 with a thickness of 0.2 μm, thereby obtaining a TAC film with a photo-alignment film.

[0256] -------------------------------------------------- Coating liquid E1 for forming photoalignment film -------------------------------------------------- - 100.00 parts by mass of polymer PA3 described below - 5.00 parts by mass of thermal cationic polymerization initiator PAG-1 described above - 0.005 parts by mass of acid generator CPI-110TF described below - 16.50 parts by mass of isopropyl alcohol - 1072.00 parts by mass of butyl acetate - 268.00 parts by mass of methyl ethyl ketone --------------------------------------------------

[0257] Polymer PA3 (In the following formula, the numerical value for each repeating unit represents the content (% by mass) of each repeating unit relative to all repeating units; weight average molecular weight: 45,000)

[0258] Acid generator CPI-110TF

[0259] Composition F1 having the following composition was applied onto the photo-alignment film E1 using a bar coater. The coating film formed on the photo-alignment film E1 was heated to 120°C with hot air, then cooled to 60°C, and then irradiated with 100 mJ / cm2 at a wavelength of 365 nm using a high-pressure mercury lamp under a nitrogen atmosphere. ２ The coating film was irradiated with ultraviolet light of 500 mJ / cm 2 while being heated to 120°C. ２ The coating film was irradiated with ultraviolet light of 1000 nm, thereby fixing the alignment of the liquid crystal compound, and a retardation layer film 1 having a positive A plate F1 was produced. The thickness of the positive A plate F1 was 2.5 μm, and Re(550) was 144 nm. The positive A plate also satisfied the relationship Re(450)≦Re(550)≦Re(650). Re(450) / Re(550) was 0.82. The positive A plate corresponds to a so-called λ / 4 plate.

[0260] ------------------------------------------------- Composition F1 ------------------------------------------------- 43.50 parts by mass of polymerizable liquid crystal compound LA-1 described below 43.50 parts by mass of polymerizable liquid crystal compound LA-2 described below 8.00 parts by mass of polymerizable liquid crystal compound LA-3 described below 5.00 parts by mass of polymerizable liquid crystal compound LA-4 described below 0.55 parts by mass of polymerization initiator PI-1 described below 0.20 parts by mass of leveling agent T-1 described below 235.00 parts by mass of cyclopentanone ------------------------------------------------

[0261] Polymerizable liquid crystal compound LA-1 (tBu represents a tertiary butyl group)

[0262] Polymerizable liquid crystal compound LA-2

[0263] Polymerizable liquid crystal compound LA-3

[0264] Polymerizable liquid crystal compound LA-4 (Me represents a methyl group)

[0265] Polymerization initiator PI-1

[0266] Leveling agent T-1 (in the formula below, the numerical value for each repeating unit represents the content (mass %) of each repeating unit relative to all repeating units; weight average molecular weight: 25,000)

[0267] [Preparation of Retardation Layer Film 2 Having Positive C Plate] The above-described cellulose acylate film 1 was used as a temporary support. The cellulose acylate film 1 was passed through a dielectric heating roll at a temperature of 60°C to raise the surface temperature of the film to 40°C, and then an alkaline solution having the composition shown below was applied to one side of the film using a bar coater in an amount of 14 ml / m. ２ The film was heated to 110°C and transported for 10 seconds under a steam-type far-infrared heater manufactured by Noritake Co., Ltd. Next, pure water was applied to the film at a rate of 3 ml / m using the same bar coater. ２ Next, after repeating washing with water using a fountain coater and removing water with an air knife three times, the film was transported to a drying zone at 70° C. for 10 seconds and dried, thereby preparing an alkali-saponified cellulose acylate film 1.

[0268] ---------------------------------------------------------------- (Alkaline solution) ---------------------------------------------------------------- Potassium hydroxide 4.7 parts by mass Water 15.8 parts by mass Isopropanol 63.7 parts by mass Fluorine-containing surfactant SF-1 (C １４ H ２９ O (CH ２ CH ２ O) ２０H) 1.0 part by mass Propylene glycol 14.8 parts by mass

[0269] An alignment film-forming coating solution G1 having the following composition was continuously applied using a #8 wire bar onto the above-mentioned alkali-saponified cellulose acylate film 1. The obtained film was dried with hot air at 60°C for 60 seconds and then with hot air at 100°C for 120 seconds to form an alignment film G1.

[0270] ------------------------------------------------------------------ Coating liquid G1 for forming alignment film -------------------------------------------------- Polyvinyl alcohol (PVA103, manufactured by Kuraray) 2.4 parts by mass Isopropyl alcohol 1.6 parts by mass Methanol 36 parts by mass Water 60 parts by mass ------------------------------------------------------------------

[0271] A coating solution H1 for forming a positive C plate having the following composition was applied onto the alignment film G1, and the resulting coating film was aged at 60° C. for 60 seconds, and then irradiated with 70 mW / cm 2 ２ An air-cooled metal halide lamp (manufactured by Eye Graphics Co., Ltd.) was used, and the light output was 1000 mJ / cm ２ The liquid crystal compound was vertically aligned by irradiating the film with ultraviolet light of 1000 W at 1000 W to fix the alignment state, thereby producing a retardation layer film 2 having a positive C plate H1 with a thickness of 0.5 μm. The Rth(550) of the obtained positive C plate was −60 nm.

[0272] -------------------------------- Coating liquid H1 for forming positive C-plate -------------------------------- 80 parts by mass of the following liquid crystal compound LC-1 20 parts by mass of the following liquid crystal compound LC-2 1 part by mass of the following vertical alignment liquid crystal compound promoter S01 8 parts by mass of ethylene oxide-modified trimethylolpropane triacrylate (V#360, manufactured by Osaka Organic Chemical Co., Ltd.) 3 parts by mass of Irgacure 907 (manufactured by BASF) 1 part by mass of Kayacure DETX (manufactured by Nippon Kayaku Co., Ltd.) 0.4 parts by mass of the following compound B03 170 parts by mass of methyl ethyl ketone 30 parts by mass of cyclohexanone --------------------------------

[0273] Liquid crystal compound LC-1

[0274] Liquid crystal compound LC-2

[0275] Vertical alignment liquid crystal compound promoter S01

[0276] Compound B03 (In the formula below, the numerical value for each repeating unit represents the content (% by mass) of each repeating unit relative to all repeating units; weight average molecular weight: 15,000)

[0277] [Preparation of Circularly Polarizing Plate 1] The retardation layer film 1 and laminate 1-14 prepared above were bonded together using an adhesive so that the angle between the transmittance central axis of laminate 1-14 orthogonally projected onto the plane of the laminate and the slow axis of retardation film 1 formed a 45° angle, and the light absorption anisotropic film 1-14 side of laminate 1-14 was on the positive A plate F1 side of retardation film 1, and then the cellulose acylate film 1 and photo-alignment film E1 on the retardation film 1 side were peeled off. The adhesive surfaces of retardation film 1 and laminate 1-14 were corona-treated, and the adhesive used was Adhesive 1 described below. Furthermore, the alignment film was peeled off, and the positive C plate side of the obtained retardation layer film 2 was attached to the exposed liquid crystal surface with an adhesive, and the support and alignment layer were peeled off. In this way, a circularly polarizing plate 1 consisting of a light absorption anisotropic film / adhesive layer / positive A plate / adhesive layer / positive C plate was prepared.

[0278] [Preparation of Adhesive 1] 100 parts by mass of a polyvinyl alcohol resin containing acetoacetyl groups (average degree of polymerization: 1200, degree of saponification: 98.5 mol%, degree of acetoacetylation: 5 mol%) and 20 parts by mass of methylol melamine were dissolved in pure water at a temperature of 30°C to prepare an aqueous solution adjusted to a solids concentration of 3.7% by mass.

[0279]

[0049]

[0050]

[0051]

[0052]

[0053]

[0054]

[0055]

[0056]

[0057]

[0058]

[0059]

[0060]

[0059]

[0061]

[0059]

[0062]

[0059]

[0063]

[0064]

[0065]

[0066]

[0067]

[0068]

[0069]

[0070]

[0071]

[0072]

[0073]

[0074]

[0075]

[0076]

[0077]

[0078]

[0079]

[0080]

[0081]

[0082]

[0083]

[0084]

[0085]

[0086]

[0087]

[0088]

[0089]

[0090]

[0091]

[0092]

[0093]

[0094]

[0095]

[0096]

[0097]

[0098]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099] [010 ...

[0280] [Preparation of Retardation Layer Film 3] Polymerization was carried out using a batch polymerization apparatus consisting of two vertical reactors equipped with stirring blades and reflux condensers controlled at 100° C. Bis[9-(2-phenoxycarbonylethyl)fluoren-9-yl]methane 29.60 parts by mass (0.046 mol), isosorbide (ISB) 29.21 parts by mass (0.200 mol), spiroglycol (SPG) 42.28 parts by mass (0.139 mol), diphenyl carbonate (DPC) 63.77 parts by mass (0.298 mol), and calcium acetate monohydrate 1.19 × 10 as a catalyst. －２ Parts by mass (6.78×10 －５ mol) was charged. After purging the reactor with nitrogen under reduced pressure, heating was performed with a heat medium, and stirring was initiated when the internal temperature reached 100°C. 40 minutes after the start of the temperature increase, the internal temperature reached 220°C, and while controlling to maintain this temperature, pressure reduction was initiated, and the pressure was reduced to 13.3 kPa in 90 minutes after reaching 220°C. Phenol vapor by-produced during the polymerization reaction was introduced into a reflux condenser at 100°C, and a small amount of monomer components contained in the phenol vapor were returned to the reactor, while uncondensed phenol vapor was introduced into a condenser at 45°C and recovered. Nitrogen was introduced into the first reactor, and the pressure was temporarily restored to atmospheric pressure, after which the oligomerized reaction liquid in the first reactor was transferred to the second reactor. Next, heating and pressure reduction in the second reactor were initiated, and the internal temperature reached 240°C and the pressure reached 0.2 kPa in 50 minutes. Polymerization was then allowed to proceed until the predetermined stirring power was achieved. When the predetermined power was reached, nitrogen was introduced into the reactor to restore pressure, and the polyester carbonate resin produced was extruded into water, and the strands were cut to obtain pellets.

[0281] The obtained polyester carbonate resin (pellets) was vacuum-dried at 80 ° C. for 5 hours, and then a film-forming device equipped with a single-screw extruder (manufactured by Toshiba Machine Co., Ltd., cylinder set temperature: 250 ° C.), a T-die (width 200 mm, set temperature: 250 ° C.), a chill roll (set temperature: 120-130 ° C.), and a winder was used to produce a long resin film having a thickness of 130 μm. The obtained long resin film was stretched while adjusting to obtain a predetermined retardation, and a retardation film 3 having a thickness of 48 μm was obtained. The stretching conditions were a width direction stretching temperature of 143 ° C. and a stretching ratio of 2.8 times. The Re (550) of the obtained retardation film 3 was 141 nm, Re (450) / Re (550) was 0.86, and the Nz coefficient was 1.12. The retardation film 3 corresponds to a so-called λ / 4 plate.

[0282] [Preparation of Circularly Polarizing Plate 2] The retardation layer film 3 and laminate 1-14 prepared above were bonded together using an adhesive so that the angle of the transmittance central axis of the laminate 1-14 orthogonally projected onto the plane of the laminate and the slow axis of the retardation film 3 formed an angle of 45° and the light absorption anisotropic film 1-14 side of the laminate 1-14 was on the retardation film 3 side, to prepare a circularly polarizing plate 2. Note that the adhesive surfaces of the retardation film 3 and the laminate 1-14 were subjected to a corona treatment, and the adhesive 1 described above was used as the adhesive.

[0283]

[0049]

[0050]

[0051]

[0052]

[0053]

[0054]

[0055]

[0056]

[0057]

[0058]

[0059]

[0060]

[0059]

[0061]

[0059]

[0062]

[0059]

[0063]

[0059]

[0064]

[0065]

[0066]

[0067]

[0068]

[0070]

[0071]

[0072]

[0073]

[0074]

[0075]

[0076]

[0077]

[0078]

[0079]

[0080]

[0081]

[0082]

[0083]

[0084]

[0085]

[0086]

[0087]

[0088]

[0089]

[0090]

[0091]

[0092]

[0093]

[0094]

[0095]

[0096]

[0097]

[0098]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099]

[0099] [010 ...100]

[0099]

[0099]

[0099]

[0099]

[0099] [

[0284] In the display devices 1 and 2 thus produced, it was confirmed that the laminate (optical film) of the present invention had sufficient performance as an optical compensation film.

[0285] REFERENCE SIGNS LIST 100 Virtual reality display device 11 First retardation layer 12 Second retardation layer 13 Third retardation layer 21 First absorbing linear polarizer 22 Second absorbing linear polarizer 30 Reflecting circular polarizer 40 Half mirror 50 Anti-reflection layer 60 Positive C plate 70 Image display panel

Claims

1. A liquid crystal composition comprising a liquid crystal compound, a dichroic substance, and a polymer having a repeating unit A including a structure represented by the following formula (A): In formula (A), R Ａ１ and R Ａ２ Each independently represents a hydrogen atom or an alkyl group. Ａ３ represents a hydrogen atom, a halogen atom, or a substituent. X represents a substituent containing one or more structures represented by the following formula (a). In formula (a), * represents a bonding position. ａ１ , R ａ２ and R ａ３ each independently represents an alkyl group, an alkenyl group, an aryl group, or an alkylenearyl group, each of which may have a substituent.

2. The liquid crystal composition according to claim 1, wherein the polymer further comprises a repeating unit B represented by the following formula (B): In formula (B), R Ｂ１ , R Ｂ２ and R Ｂ３ R each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｂ４ and R Ｂ５ Each independently represents a hydrogen atom or a substituent. Ｂ４ and R Ｂ５ When is a substituent, R Ｂ４ and R Ｂ５ may be linked to form a ring.

3. In the formula (B), R Ｂ４ and R Ｂ５ The liquid crystal composition according to claim 2 , wherein the sum of the molecular weights of the above is 100 or less.

4. In the formula (B), R Ｂ４ and R Ｂ５ The liquid crystal composition according to claim 2, wherein each of the groups independently represents a hydrogen atom or an organic group having 1 to 15 carbon atoms.

5. The liquid crystal composition according to claim 1, wherein the polymer further comprises a repeating unit D represented by formula (D): In formula (D), R Ｄ１ , R Ｄ２ and R Ｄ３ each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｄ１ represents a single bond, -COO- or -CO-. Ｄ１ represents a divalent hydrocarbon group having 1 to 20 carbon atoms. ２ Among -, one or two or more non-adjacent -CH ２ Each - may be independently substituted with -O-, -S-, -NH- or -N(Q)-, where Q represents a substituent. Ｄ２ and L Ｄ３ Each of Cy independently represents a single bond or a divalent linking group. Ｄ represents a divalent linking group containing a mesogen group. D represents a hydrogen-bonding group composed of a hydrogen atom and a nonmetallic atom of Groups 14 to 16. However, the nonmetallic atom may have a substituent. n represents an integer of 1 to 3. When n is 2 or 3, multiple L Ｄ２ may be the same or different, and a plurality of Cy Ｄ may be the same or different.

6. In the formula (D), L Ｄ３ represents a single bond, and D is -COOH or -NHCOR ２ Or -CONHR ３ The liquid crystal composition according to claim 5 , wherein R ２ and R ３ each independently represents an alkyl group or an alkenyl group having 1 to 10 carbon atoms, provided that -CH ２ Among -, one or two or more non-adjacent -CH ２ - may be substituted with -O-.

7. In the formula (D), L Ｄ３ represents a single bond, and D is -NHCOR ４ The liquid crystal composition according to claim 5 , wherein R ４ represents an alkyl or alkenyl group having 1 to 3 carbon atoms, provided that -CH ２ Among -, one or two or more non-adjacent -CH ２ - may be substituted with -O-.

8. The liquid crystal composition according to claim 5, wherein in formula (D), n is 1 or 2.

9. The liquid crystal composition according to claim 1, wherein the repeating unit A is a repeating unit A-1 represented by formula (A-1). In formula (A-1), R Ａ１ and R Ａ２ Each independently represents a hydrogen atom or an alkyl group. Ａ３ represents a hydrogen atom, a halogen atom or a substituent. Ａ１ is a single bond, —O— or —NR Ｚ -, where R Ｚ represents a hydrogen atom or a substituent. Ａ２ represents a single bond or a linking group having a valence of m+1. m represents an integer of 1 or more. ａ１ , R ａ２ and R ａ３ each independently represents an alkyl group, an alkenyl group, an aryl group, or an alkylenearyl group, which may have a substituent. When m is an integer of 2 or more, a plurality of R ａ１ may be the same or different, and multiple R ａ２ may be the same or different, and multiple R ａ３ may be the same or different.

10. The liquid crystal composition according to claim 9, wherein in formula (A-1), m is an integer of 2 or more.

11. The liquid crystal composition according to claim 1, wherein the polymer has a repeating unit A-1 represented by formula (A-1), a repeating unit B represented by formula (B), and a repeating unit D represented by formula (D). In formula (A-1), R Ａ１ and R Ａ２ Each independently represents a hydrogen atom or an alkyl group. Ａ３ represents a hydrogen atom, a halogen atom or a substituent. Ａ１ is a single bond, —O— or —NR Ｚ -, where R Ｚ represents a hydrogen atom or a substituent. Ａ２ represents a single bond or a linking group having a valence of m+1. m represents an integer of 1 or more. ａ１ , R ａ２ and R ａ３ each independently represents an alkyl group, an alkenyl group, an aryl group, or an alkylenearyl group, which may have a substituent. When m is an integer of 2 or more, a plurality of R ａ１ may be the same or different, and multiple R ａ２ may be the same or different, and multiple R ａ３ may be the same or different. In formula (B), R Ｂ１ , R Ｂ２ and R Ｂ３ R each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｂ４ and R Ｂ５ Each independently represents a hydrogen atom or a substituent. Ｂ４ and R Ｂ５ When is a substituent, R Ｂ４ and R Ｂ５ may be linked to form a ring. In formula (D), R Ｄ１ , R Ｄ２ and R Ｄ３ each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｄ１ represents a single bond, -COO-, or -CO-. Ｄ１ represents a divalent hydrocarbon group having 1 to 20 carbon atoms. ２ Among -, one or two or more non-adjacent -CH ２ Each - may be independently substituted with -O-, -S-, -NH-, or -N(Q)-, where Q represents a substituent. Ｄ２ and L Ｄ３ Each of Cy independently represents a single bond or a divalent linking group. Ｄ represents a divalent linking group containing a mesogen group. D represents a hydrogen-bonding group composed of a hydrogen atom and a nonmetallic atom of Groups 14 to 16. However, the nonmetallic atom may have a substituent. n represents an integer of 1 to 3. When n is 2 or 3, multiple L Ｄ２ may be the same or different, and a plurality of Cy Ｄ may be the same or different.

12. The liquid crystal composition according to claim 1, wherein the mass ratio of the content of said polymer to the content of said dichroic material is 0.0007 to 0.

6.

13. The liquid crystal composition according to claim 1, wherein the liquid crystal compound comprises a polymer liquid crystal compound.

14. The liquid crystal composition according to claim 13, wherein the liquid crystal compound further comprises a low molecular weight liquid crystal compound.

15. A light absorbing anisotropic film obtained by using the liquid crystal composition according to any one of claims 1 to 14.

16. An optically absorptive anisotropic film as described in claim 15, wherein the orientation state of the liquid crystal compound and dichroic substance contained in the optically absorptive anisotropic film is fixed, and the angle θ between the central axis of transmittance of the optically absorptive anisotropic film and the normal direction to the surface of the optically absorptive anisotropic film is greater than 45° and less than 90°.

17. A laminate comprising the optically absorptive anisotropic film according to claim 15 and a λ / 4 plate.

18. An image display device comprising the optically absorptive anisotropic film according to claim 15 and a display element.

19. A polymer having a repeating unit A-1 represented by formula (A-1) and at least one repeating unit selected from a repeating unit B represented by formula (B) and a repeating unit D represented by formula (D). In formula (A-1), R Ａ１ and R Ａ２ Each independently represents a hydrogen atom or an alkyl group. Ａ３ represents a hydrogen atom, a halogen atom or a substituent. Ａ１ is a single bond, —O— or —NR Ｚ -, where R Ｚ represents a hydrogen atom or a substituent. Ａ２ represents a single bond or a linking group having a valence of m+1. m represents an integer of 1 or more. ａ１ , R ａ２ and R ａ３ each independently represents an alkyl group, an alkenyl group, an aryl group, or an alkylenearyl group, each of which may have a substituent. When m is an integer of 2 or more, a plurality of R ａ１ may be the same or different, and multiple R ａ２ may be the same or different, and multiple R ａ３ may be the same or different. In formula (B), R Ｂ１ , R Ｂ２ and R Ｂ３ R each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｂ４ and R Ｂ５ Each independently represents a hydrogen atom or a substituent. Ｂ４ and R Ｂ５ When is a substituent, R Ｂ４ and R Ｂ５ may be linked to form a ring. In formula (D), R Ｄ１ , R Ｄ２ and R Ｄ３ each independently represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, or an aryl group. Ｄ１ represents a single bond, -COO-, or -CO-. Ｄ１ represents a divalent hydrocarbon group having 1 to 20 carbon atoms. ２ Among -, one or two or more non-adjacent -CH ２ Each - may be independently substituted with -O-, -S-, -NH-, or -N(Q)-, where Q represents a substituent. Ｄ２ and L Ｄ３ Each of Cy independently represents a single bond or a divalent linking group. Ｄ represents a divalent linking group containing a mesogen group. D represents a hydrogen-bonding group composed of a hydrogen atom and a nonmetallic atom of Groups 14 to 16. However, the nonmetallic atom may have a substituent. n represents an integer of 1 to 3. When n is 2 or 3, multiple L Ｄ２ may be the same or different, and a plurality of Cy Ｄ may be the same or different.

Images