A liquid crystal display device includes a first substrate, a first alignment film disposed on the first substrate, a second substrate, and a liquid crystal layer disposed between the first alignment film and the second substrate. The first substrate has a surface curved in a first direction and the second substrate has a surface curved in the first direction. The first alignment film includes a polymerization initiator and a polymer chain that is a copolymer of a dianhydride-based compound and a diamine-based compound. The polymer chain includes a main chain including a repeating unit including an imide group, a first side chain, including a vertical align group, bonded to the main chain, and a second side chain bonded to the main chain. The functional group includes a biphenyl group or a terphenyl group.
液晶显示装置包括第一基板、设置在第一基板上的第一对准膜、第二基板以及设置在第一对准膜和第二基板之间的液晶层。第一基板的表面沿第一方向弯曲,第二基板的表面沿第一方向弯曲。第一配向膜包括聚合
引发剂和聚合物链,聚合物链是二酐基化合物和二胺基化合物的共聚物。聚合物链包括一条主链,主链上有一个包括
酰亚胺基团的重复单元;一条第一侧链,包括一个与主链结合的垂直排列基团;以及一条与主链结合的第二侧链。官能团包括
联苯基团或三
联苯基团。