LC ALIGNING AGENT COMPRISING POLYAMIDE ACID AND/OR POLYIMIDE OBTAINED FROM TETRACARBOXYLIC DIANHYDRIDE HAVING SPECIFIC STRUCTURE OR DIAMINE HAVING SPECIFIC STRUCTURE, LC ALIGNMENT LAYER OBTAINED FROM THE LC ALIGNING AGENT, AND LCD DEVICE EMPLOYING THE LC ALIGNMENT LAYER

摘要

PURPOSE: Provided are a liquid crystal aligning agent which is improved in LC aligning property, a liquid crystal alignment layer obtained from the LC aligning agent and a LCD device employing the LC alignment layer. CONSTITUTION: The liquid crystal aligning agent comprises a polymer having at least one repeating unit represented by the formula 1, 2, 3 or 4, wherein Q and R are different each other and are a tetravalent organic group; and X and Y are different each other and are a divalent organic group. Also the liquid crystal aligning agent comprises a polymer obtained from a tetracarboxylic dianhydride represented by the formula 5 and a diamine, or a polymer obtained from a tetracarboxylic dianhydride and a diamine represented by the formula 6.