Patent ID: 8908132
Filing Date: 2014-12-09
Classification: G02F

Abstract:
1. A liquid crystal display device, comprising: a liquid crystal panel that includes first and second substrates facing each other, and a blue phase mode liquid crystal layer that is between the first and second substrates, and that has an optical anisotropy when a horizontal electric field is applied and has an optical isotropy when a horizontal electric field is not applied, wherein the first substrate is closer to a backlight unit than the second substrate; polarizing plates that are on outer surfaces of the first and second substrates, respectively; and an optical compensation film including a biaxial phase retardation layer that is located between the polarizing plate on the outer surface of the second substrate and directly above the second substrate, wherein no +C plate is located between the polarizing plate on the outer surface of the second substrate and the second substrate, wherein the biaxial phase retardation layer has a relation of refractive indexes that is (nx>ny >nz), wherein the nx and ny of the biaxial phase retardation layer are refractive indexes in X and Y directions, respectively, in a XY plane, and the nz of the biaxial phase retardation layer is a refractive index in a normal direction to the XY plane, wherein polarization axes of the polarizing plates make an angle of 45° with the horizontal electric field produced in the liquid crystal panel, and wherein an +A plate has a relation of refractive indexes that is (nx>ny=nz) and is arranged between the first polarizing plate and the first substrate of the liquid crystal panel.