LIQUID CRYSTAL ALIGNING AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT USING SAME

摘要

A liquid crystal aligning agent is characterised in having at least one polymer selected from a group comprising: polyamic acids obtained by reacting a diamine component containing a diamine compound represented by formula [1] with a tetracarboxylic acid dianhydride; and polyimides obtained by the imidization of said polyamic acids. (In the formula, X1 represents a single bond, -CH2O-, -O-, -COO-, -OCO-, -NHCO-, or -CONH-, X2 represents a C1-3 alkylene group, X3 represents -O-, -NH-, or -N(R1)-, X4 represents a single bond, -O-, -S-, or -NH-. X5 represents a single bond or a carbon ring selected from the group [X5-1] - [X5-5], X6 represents a C1-18 straight-chain or branched alkyl group, X7 represents a hydrogen atom, -R2-, -OR3, -NHR4, -N(R5)2, or -SR6. Here, R1-R6 each independently represent a C1-5 alkyl group. n represents an integer of 1 or 2.) (In the carbon ring structure, an arbitrary hydrogen atom can be substituted by CH3.)