Patent ID: 8545947
Filing Date: 2013-10-01
Classification: C08G,C09K,G02B

Abstract:
1. A liquid crystal display, comprising: a transparent substrate with optical compensation ability consisting of polyimide having the following chemical formula: wherein A and A′ are selected from the group consisting of: wherein X and Y are hydrogen, methyl, trifluoromethyl, hydroxyl, C1-18alkyl, bromine, chlorine or iodine; Z is —O—, —CH2-, —S—, —SO2-, —C(CH3)2-, —Ar—O—Ar—, —Ar—CH2-Ar—, —O—Ar—C(CH3)2—Ar—O—, —O—Ar—Ar—O—, —O—Ar—C(CF3)2-Ar—O— or —Ar—C(CH3)2-Ar—, and Ar is benzene; wherein B and B′ are cyclic aliphatic or aromatic compounds, and n wherein the transparent substrate has a thickness between 51 and 200 μm; wherein the transparent substrate has a light retardation (R a polarization plate positioned on a first surface of the transparent substrate; a plurality of spacers disposed on a second surface of the transparent substrate; a liquid crystal material positioned on the second surface of the transparent substrate; the polarization plate comprises two supporting layers and a polarization layer is disposed between the two supporting layers.