Abstract: A liquid crystal alignment agent allowing formation of an LCD element having good reliability and less residual image, a liquid crystal alignment film, and an LCD element having the liquid crystal alignment film are shown. The liquid crystal alignment agent includes a polymer (A), a photosensitive polysiloxane (B), and a solvent (C). The polymer (A) is obtained by reacting a mixture that includes a tetracarboxylic dianhydride component (a-1) and a diamine component (a-2). The photosensitive polysiloxane (B) is obtained by reacting a polysiloxane (b-1) having an epoxy group with a cinnamic acid derivative (b-2) and an aromatic heterocyclic derivative (b-3) containing nitride, oxide or sulfide.

Abstract: A liquid crystal alignment agent contains a polymer composition, a polysiloxane, and a solvent. The polymer composition is obtained by subjecting a mixture including a tetracarboxylic dianhydride component and a diamine component to a reaction. The diamine component includes first and second diamine compounds. The polysiloxane contains an epoxy-based group. A liquid crystal display element made from the aforesaid liquid crystal alignment agent has reduced ion density.

Abstract: A liquid crystal alignment agent contains a polymer composition, a polysiloxane, and a solvent. The polymer composition is obtained by subjecting a mixture including a tetracarboxylic dianhydride component and a diamine component to a reaction. The diamine component includes first and second diamine compounds defined herein. The polysiloxane contains an epoxy-based group and a polymerizable unsaturated group defined herein. A liquid crystal display element made from the aforesaid liquid crystal alignment agent has reduced ion density.

Abstract: A liquid crystal alignment agent which is capable of forming a liquid crystal alignment film with excellent ultraviolet reliability, the liquid crystal alignment film, and a liquid crystal display element having the same are provided. The liquid crystal alignment agent includes a polymer composition (A) and a solvent (B). The polymer composition (A) is obtained by reacting a mixture, wherein the mixture includes a tetracarboxylic dianhydride component (a) and a diamine component (b). The tetracarboxylic dianhydride component (a) includes a tetracarboxylic dianhydride compound (a-1) represented by formula (1). The diamine component (b) includes a diamine compound (b-1) represented by formula (2) and a diamine compound (b-2) containing the structure represented by formula (3).

Abstract: A liquid crystal alignment agent of the present invention includes a polymer composition (A) synthesized by tetracarboxylic dianhydride compound (a) and diamine compound (b), and a solvent (B). The diamine compound (b) includes diamine (b-1) shown as following formula (I) and diamine (b-2): in formula (I), R1 represents a linear or branched alkyl of 1 to 6 carbons, a linear or branched hydroxyl alkyl of 1 to 6 carbons, an alkoxy of 1 to 6 carbons, an alkylthio of 1 to 6 carbons, a halogen atom, an amino group or a nitro group; R2 represents a methylene group, a divalent alkyl of 2 to 10 carbons, a divalent alkenyl of 2 to 7 carbons or a divalent alkynyl of 2 to 6 carbons; and a represents an integer of 0 to 3.

Abstract: A liquid crystal alignment agent allowing formation of an LCD element having good reliability and less residual image, a liquid crystal alignment film, and an LCD element having the liquid crystal alignment film are shown. The liquid crystal alignment agent includes a polymer (A), a photosensitive polysiloxane (B), and a solvent (C). The polymer (A) is obtained by reacting a mixture that includes a tetracarboxylic dianhydride component (a-1) and a diamine component (a-2). The photosensitive polysiloxane (B) is obtained by reacting a polysiloxane (b-1) having an epoxy group with a cinnamic acid derivative (b-2) and an aromatic heterocyclic derivative (b-3) containing nitride, oxide or sulfide.

Abstract: A liquid crystal alignment agent capable of forming a liquid crystal alignment film having good ultraviolet reliability, the liquid crystal alignment film, and a liquid crystal display element having the same are provided. The liquid crystal alignment agent includes a polymer (A) and a solvent (B). The polymer (A) is obtained by reacting a mixture. The mixture includes a tetracarboxylic dianhydride component (a) and a component (b). The component (b) includes a diamine compound (b-1) represented by formula (1), a diamine compound (b-2) represented by formula (2), and a compound (b-3), wherein the compound (b-3) is at least one selected from the group consisting of a structure represented by formula (3-1) and a structure represented by formula (3-2).

Abstract: The present invention relates to a liquid crystal alignment agent, a liquid crystal alignment film and a liquid crystal display element. The liquid crystal alignment agent includes a polymer composition (A) synthesized by tetracarboxylic dianhydride compound (a) and diamine compound (b), and a solvent (B). The diamine compound (b) includes diamine (b-1) shown as following formula (I) and diamine (b-2): in formula (I), R1 represents a linear or branched alkyl of 1 to 6 carbons, a linear or branched hydroxyl alkyl of 1 to 6 carbons, an alkoxy of 1 to 6 carbons, an alkylthio of 1 to 6 carbons, a halogen atom, an amino group or a nitro group; R2 represents a methylene group, a divalent alkyl of 2 to 10 carbons, a divalent alkenyl of 2 to 7 carbons or a divalent alkynyl of 2 to 6 carbons; and a represents an integer of 0 to 3.

Abstract: A liquid crystal alignment agent capable of forming a liquid crystal alignment film having good pre-tilt angle light stability, the liquid crystal alignment film, and a liquid crystal display element having the liquid crystal alignment film are provided. The liquid crystal alignment agent includes a polymer (A), a photosensitive polysiloxane (B), and a solvent (C). The polymer (A) is obtained by reacting a mixture, wherein the mixture includes a tetracarboxylic dianhydride component (a1) and a diamine component (a2). The diamine component (a2) includes a diamine compound (a2-1) represented by formula (1). The photosensitive polysiloxane (B) is obtained by reacting a silane compound (b1-1) containing an epoxy group and a cinnamic acid derivative (b2).

Abstract: A liquid crystal alignment agent, a liquid crystal alignment film, and a liquid crystal display device are provided. The liquid crystal alignment agent includes a polymer composition (A-1) and a solvent (B). The polymer composition (A-1) is obtained by reacting a tetracarboxylic acid dianhydride compound (a) with a diamine compound (b). The diamine compound (b) includes at least one type of diamine (b-1) represented by formula (I) and at least one type of diamine (b-2) having the structure represented by formula (II). The liquid crystal alignment agent can be made into a liquid crystal display device having good uniformity of pretilt angle after ultraviolet irradiation.

Abstract: A liquid crystal alignment agent which is capable of forming a liquid crystal alignment film with excellent ultraviolet reliability, the liquid crystal alignment film, and a liquid crystal display element having the same are provided. The liquid crystal alignment agent includes a polymer composition (A) and a solvent (B). The polymer composition (A) is obtained by reacting a mixture, wherein the mixture includes a tetracarboxylic dianhydride component (a) and a diamine component (b). The tetracarboxylic dianhydride component (a) includes a tetracarboxylic dianhydride compound (a-1) represented by formula (1). The diamine component (b) includes a diamine compound (b-1) represented by formula (2) and a diamine compound (b-2) containing the structure represented by formula (3).

Abstract: A liquid crystal alignment agent capable of forming a liquid crystal alignment film having good ultraviolet reliability, the liquid crystal alignment film, and a liquid crystal display element having the same are provided. The liquid crystal alignment agent includes a polymer (A) and a solvent (B). The polymer (A) is obtained by reacting a mixture. The mixture includes a tetracarboxylic dianhydride component (a) and a diamine component (b). The diamine component (b) includes a diamine compound (b-1) represented by formula (1) and a diamine compound (b-2) represented by formula (2).

Abstract: A liquid crystal alignment agent contains a polymer composition, a polysiloxane, and a solvent. The polymer composition is obtained by subjecting a mixture including a tetracarboxylic dianhydride component and a diamine component to a reaction. The diamine component includes first and second diamine compounds. The polysiloxane contains an epoxy-based group. A liquid crystal display element made from the aforesaid liquid crystal alignment agent has reduced ion density.

Abstract: A liquid crystal alignment agent contains a polymer composition, a polysiloxane, and a solvent. The polymer composition is obtained by subjecting a mixture including a tetracarboxylic dianhydride component and a diamine component to a reaction. The diamine component includes first and second diamine compounds defined herein. The polysiloxane contains an epoxy-based group and a polymerizable unsaturated group defined herein. A liquid crystal display element made from the aforesaid liquid crystal alignment agent has reduced ion density.

Abstract: A liquid crystal alignment agent capable of forming a liquid crystal alignment film having good ultraviolet reliability, the liquid crystal alignment film, and a liquid crystal display element having the same are provided. The liquid crystal alignment agent includes a polymer (A) and a solvent (B). The polymer (A) is obtained by reacting a mixture. The mixture includes a tetracarboxylic dianhydride component (a) and a diamine component (b). The diamine component (b) includes a diamine compound (b-1) represented by formula (1), a diamine compound (b-2) represented by formula (2), and a diamine compound (b-3) having a structure represented by formula (3).

Abstract: The invention relates to a liquid crystal alignment agent, a liquid crystal alignment film, and a liquid crystal display element. The liquid crystal alignment agent contains: a polymer composition (A) prepared by reacting a mixture including a tetracarboxylic dianhydride component (a) and a diamine component (b), a photopolymerizable compound (B), and a solvent (C). The diamine component (b) includes at least one diamine compound (b-1) having the structure represented by formula (II): In the formula, Ra and Rb each independently represent a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a halogen atom, or a cyano group; n1 and n2 each independently represent an integer of 0 to 4; n3 represents 0 or 1; and * each independently represents a connecting bond.

Abstract: A liquid crystal alignment agent capable of forming a liquid crystal alignment film having good ultraviolet reliability, the liquid crystal alignment film, and a liquid crystal display element having the same are provided. The liquid crystal alignment agent includes a polymer (A) and a solvent (B). The polymer (A) is obtained by reacting a mixture. The mixture includes a tetracarboxylic dianhydride component (a) and a diamine component (b). The diamine component (b) includes a diamine compound (b-1) represented by formula (1) and a diamine compound (b-2) represented by formula (2).

Abstract: A liquid crystal alignment agent, a liquid crystal alignment film, and a liquid crystal display device are provided. The liquid crystal alignment agent includes a polymer composition (A-1) and a solvent (B). The polymer composition (A-1) is obtained by reacting a tetracarboxylic acid dianhydride compound (a) with a diamine compound (b). The diamine compound (b) includes at least one type of diamine (b-1) represented by formula (I) and at least one type of diamine (b-2) having the structure represented by formula (II). The liquid crystal alignment agent can be made into a liquid crystal display device having good uniformity of pretilt angle after ultraviolet irradiation.

Abstract: The present invention relates to a liquid crystal alignment agent, a liquid crystal alignment film made by the liquid crystal alignment agent and a liquid crystal display element having the liquid crystal alignment film. The liquid crystal alignment agent includes a polymer composition (A), a photopolymerizable compound (B) and a solvent (C). The polymer composition (A) is synthesized by a mixture that includes a tetracarboxylic dianhydride component (a) and a diamine component (b). The aforementioned liquid crystal alignment agent has a lower ion density.