Liquid crystal photoalignment agent and liquid crystal display including the same
申请人:Samsung Display Co., Ltd.
公开号:US11156874B2
公开(公告)日:2021-10-26
A liquid crystal photoalignment agent includes: a copolymer of diamine and dianhydride; and a compound Formula 1 below, wherein an amount of the compound of Formula 1 is less than about 10 weight %, based on a total weight of the liquid crystal photoalignment agent:
R1 is a substituted or unsubstituted tetravalent organic group derived from an acid dianhydride, wherein the acid dianhydride is at least one of an aliphatic cyclic acid dianhydride or an aromatic acid dianhydride, R2 is a substituted or unsubstituted trivalent organic group derived from an aromatic diamine, at least one of R1 and R2 is substituted with CF3 or a silyl group, R3 is a residue of a compound including a substituted or unsubstituted aromatic group with a carbon number that is equal to or greater than 6, n is 1 to 5, and * represents a point of attachment.
一种液晶光配向剂包括:二胺和二酐的共聚物;以及下式 1 化合物,其中式 1 化合物的用量占液晶光配向剂总重量的比例小于约 10%:
R1 是衍生自酸二酐的取代或未取代的四价有机基团,其中酸二酐是脂肪族环状酸二 酐或芳香族酸二酐中的至少一种,R2 是衍生自芳香族二胺的取代或未取代的三价有机基团、R1 和 R2 中至少有一个被 CF3 或硅烷基取代,R3 是包括碳原子数等于或大于 6 的取代或未取代芳香基团的化合物残基,n 为 1 至 5,* 代表连接点。