Patent ID: 8263188

Claim:
A composition for a photo-alignment film comprising: a compound expressed by the following general formula (I); and a compound expressed by the following general formula (II): where in the above general formula (I), R 1 is any of a hydrogen atom, a cyano group, —F, —Cl, —Br, an alkyl group, an alkoxy group, —N(CH 3 ) 2 , an alkylester group, and a group expressed by the following general formula (1); L 1 and L 2 are identical to or different from each other and are each independently any one selected from the group consisting of a single bond, —O—, —O—CO—, —O—CO—O—, —CO—O—, —S—, —N(CH 3 )—, —NH—, —N(CH 3 )—CO—, —NH—CO—, —CO—N(CH 3 )—, and —CO—NH—; S 1 and S 2 are identical to or different from each other and are each independently one of a single bond and an optionally substituted alkylene group; Q 1 is a polymerizable group; M 1 is a group expressed by any of the following general formulae (2) to (8); R 3 and R 4 are identical to or different from each other and are each independently any one selected from the group consisting of —F, —Cl, —Br, —CH 3 , —OCH 3 , and —CN; P 3 and P 4 are identical to or different from each other and are each independently an integer of 0 to 4; and m is an integer of 0 to 3, where in the above general formula (1), L 3 and L 4 are identical to or different from each other and are each independently any one selected from the group consisting of a single bond, —O—, —O—CO—, —O—CO—O—, —CO—O—, —S—, N(CH 3 )—, —NH—, —N(CH 3 )—CO—, —NH—CO—, —CO—N(CH 3 )—, and —CO—NH—; S 3 and S 4 are identical to or different from each other and are each independently one of a single bond and an optionally substituted alkylene group; Q 2 is a polymerizable group; M 2 is identical to or different from the M 1 and is a group expressed by any of the following general formulae (2) to (8; and n is an integer of 0 to 3, where in the above general formula (2), R 5 is any of —F, —Cl, —Br, —CH 3 , —OCH 3 , and —CN; and P 5 is an integer of 0 to 4, where in the above general formula (II), R 2 is one of a hydrogen atom and a methyl group; L 5 is any of a single bond, —O—, —NH—, and —N(CH 3 )—; L 6 and L 7 are identical to or different from each other and are each independently any one selected from the group consisting of a single bond, —O—, —O—CO—, —O—CO—O—, —CO—O—, —S—, —N(CH 3 )—, —NH—, —N(CH 3 )—CO—, —NH—CO—, —CO—N(CH 3 )—, and —CO—NH—; S 5 and S 6 are identical to or different from each other and are each independently one of a single bond and an optionally substituted alkylene group; Q 3 is a polymerizable group; M 3 is identical to or different from one of the M 1 and the M 2 , and is a group expressed by any of the above general formulae (2) to (8); x is an integer of 1 to 5; and a parenthesis ( ) Y indicates a repeating unit wherein the compound expressed by formula (II) has a weight average molecular weight of 2,000 or more.