This invention relates to a photo-alignment copolymer which enables the formation of an optical anisotropic film that exhibits superior optical anisotropy, an optical anisotropic film using the photo-alignment copolymer and a method of manufacturing the optical anisotropic film. The photo-alignment copolymer includes both of a photo-alignment repeating unit having a photo-reactive functional group such as a cinnamate-based functional group, a chalcone-based functional group, an azo-based functional group or a coumarin-based functional group, and a repeating unit having a specific structure able to increase optical anisotropy.
本发明涉及一种光对准共聚物,其使得能够形成具有优异光学各向异性的光各向异性薄膜,以及使用该光对准共聚物制造光各向异性薄膜的方法。该光对准共聚物包括具有光反应性官能团的光对准重复单元,例如
香草酸基官能团、
查尔酮基官能团、偶氮基官能团或
香豆素基官能团,以及具有特定结构以增加光学各向异性的重复单元。