液晶配向剂、液晶配向膜以及液晶显示元件;LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

本发明提供一种兼具紫外线可靠性佳及离子密度低的液晶配向剂、由上述液晶配向剂形成的液晶配向膜以及具有上述液晶配向膜的液晶显示元件。液晶配向剂包括聚合物组成物(A)以及溶剂(B)。聚合物组成物(A)是由混合物反应而获得，混合物包括羧酸酐组份(a)及二胺组份(b)。羧酸酐组份(a)包括四羧酸二酐化合物(a-1)及三羧酸酐化合物(a-2)。二胺组份(b)包括由式(I)表示的二胺化合物(b-1)。;A liquid crystal alignment agent with excellent ultraviolet reliability and low ion density, a liquid crystal alignment film formed from the liquid crystal alignment agent, and a liquid crystal display device having the liquid crystal alignment film are provided. The liquid crystal alignment agent includes a polymer composition (A) and a solvent (B). The polymer composition (A) is obtained by reacting a mixture. The mixture includes a carboxylic anhydride component (a) and a diamine component (b). The carboxylic anhydride component (a) includes a tetracarboxylic dianhydride compound (a-1) and a tricarboxylic anhydride compound (a-2). The diamine component (b) includes a diamine compound (b-1) represented by formula (I).