The present invention provides a liquid crystal display device that can retain a favorable VHR and a low residual DC voltage and minimize display unevenness such as stains and image sticking, in long-term use at high temperatures. The liquid crystal display device includes a first substrate including a pixel electrode; a second substrate facing the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; an aromatic polyimide-based alignment film disposed on at least one of the first substrate and the second substrate; and a radical generator capable of supplying a radical to the liquid crystal layer upon being irradiated with light, the liquid crystal layer containing a liquid crystal compound with an alkenyl group, the aromatic polyimide-based alignment film containing at least one polymer selected from a polyimide and a polyamic acid and being in no contact with the pixel electrode, the at least one polymer containing an aromatic tetracarboxylic dianhydride monomer unit.
本发明提供了一种液晶显示装置,该装置在高温下长期使用时可保持良好的 VHR 和较低的残余直流电压,并最大限度地减少显示不平整现象,例如污点和图像粘连。该液晶显示装置包括:包括像素电极的第一基板;面向第一基板的第二基板;夹在第一基板和第二基板之间的液晶层;设置在第一基板和第二基板中至少一个基板上的芳香族聚
酰亚胺基配向膜;液晶层含有带烯基的液晶化合物,芳香族聚
酰亚胺对位膜含有至少一种选自聚
酰亚胺和聚酰胺酸的聚合物,且与像素电极不接触,至少一种聚合物含有芳香族四
羧酸二酐单体单元。