TRIAZOLE-CONTAINING TETRACABOXYLIC ACID DIANHYDRIDES, LIQUID CRYSTAL ALIGNING AGENTS, LIQUID CRYSTAL ALIGNMENT LAYERS, AND LIQUID CRYSTAL DISPLAY DEVICES USING THE SAME

摘要

The purpose of the present invention is to provide a liquid crystal aligning agent allowing formation of a liquid crystal aligning layer which can hardly be exfoliated or cut. In the present invention, provided is tetracarboxylic acid dianhydride represented by chemical formula 177. In chemical formula 177, X is a divalent organic group comprising at least one triazole ring; R1 and R2 are each independently one radical selected from the group consisting of the following trivalent radicals represented by chemical formula 178; and at least one hydrogen among the trivalent radicals may be substituted with methyl, ethyl or phenyl.