| 摘要 |
Provided is a liquid crystal orientation treatment agent comprising the following specific polymer (A), specific polymer (B) and specific crosslinkable compound (C). Specific polymer (A) is at least one polymer selected from the group consisting of polyimide and polyimide precursors wherein a diamine compound having a side chain represented by formula [1] is used in a portion of the starting materials. Specific polymer (B) is at least one polymer selected from polyimide and polyimide precursors wherein a diamine compound having a side chain represented by formula [1] is used in a portion of the starting materials and the ratio of the diamine compound having a side chain represented by formula [1] in the total diamine component of the starting materials is smaller than the ratio of diamine compound having a side chain represented by formula [1] in the total diamine component of the starting materials of specific polymer (A). Specific crosslinkable compound (C) is a crosslinkable compound having two or more crosslinking groups selected from epoxy groups, and the like. (In formula [1], X1 is a single bond or a bonding group such as -O-, X2 is a single bond or -(CH2)b- (where b is an integer between 1 and 15), X3 is a single bond or a bonding group such as -O-, X4 is a divalent cyclic group selected from a benzene ring and the like, X5 is a divalent cyclic group selected from a benzene ring, and the like, n is an integer between 0 and 4, and X6 is a C1-18 alkyl group, and the like.) |
