Polyimide film from pyromellitic dianhydride and bis (4-aminophenoxy) aromatic compound as alignment layer for liquid crystal display

摘要

The present invention provides pyromellitic dianhydride and 1,3-bis (4-aminophenoxy) benzene or 1,4-bis (4-aminophenoxy) which provide a low tilt angle of 1 to 2 ° when used in liquid crystal displays. There is provided a polyimide alignment film based on bis (4-aminophenoxy) aromatic compounds such as) benzene.