Patent ID: 7630038
Filing Date: 2009-12-08
Classification: G02B,G02F

Abstract:
1. A liquid crystal panel, comprising: a liquid crystal cell; a first polarizer placed on one side of the liquid crystal cell; a second polarizer placed on the other side of the liquid crystal cell; and at least two optical compensation layers including a first optical compensation layer and a second optical compensation layer placed between the first polarizer and the second polarizer, wherein the first optical compensation layer has an absolute value of an photoelastic coefficient of 40×10 the second optical compensation layer has relationships of the following expressions (3) and (4): where Δnd(380), Δnd(550), and Δnd(780) respectively represent in-plane retardations measured with a wavelength of 380 nm, 550 nm, and 780 nm at 23° C.; Rth(380), Rth(550), and Rth(780) respectively represent thickness direction retardations measured with a wavelength of 380 nm, 550 nm, and 780 nm at 23° C.; and nx, ny, and nz respectively represent refractive indices in a slow axis direction, a fast axis direction, and a thickness direction.