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 HAVING THE SAME

摘要

本发明提供液晶配向剂、液晶配向膜以及液晶显示元件。液晶配向剂包括聚合物组成物(A-1)以及溶剂(B)。聚合物组成物(A-1)是由四羧酸二酐化合物(a)及二胺化合物(b)反应而获得。二胺化合物(b)包括至少一种由式(I)表示的二胺(b-1)以及至少一种具有由式(II)表示的结构的二胺(b-2)。液晶配向剂可以制作出经紫外线照射后预倾角均一性佳的液晶显示元件。;A liquid crystal alignment agent, a liquid crystal alignment film, and a liquid crystal display device having the same are provided. The liquid crystal alignment agent comprises a polymer composition (A-1) and a solvent (B). The polymer composition (A-1) is obtained by reacting a tetracarboxylic dianhydride (a) with a diamine (b). The diamine (b) comprises at least one kind of diamine (b-1) represented by formula (I) and at least one kind of diamine (b-2) having the structure represented by formula (II). The liquid crystal alignment agent can be made to a liquid crystal display device having good uniformity of pretilt angle after irradiated with ultraviolet light.