Patent ID: 7843536

Claim:
A liquid crystal display device comprising: a liquid crystal cell including liquid crystal operating in a twisted nematic mode; a first quartz plate optically compensating for the liquid crystal cell; a second quartz plate optically compensating for the liquid crystal cell; and a pair of polarizing elements disposed with the liquid crystal cell, the first quartz plate, and the second quartz plate interposed therebetween, wherein the thickness d [μm] of the first and second quartz plates, the polar angle θ [°] of the optical axis of the first and second quartz plates, and the cell gap CG [μm] of the liquid crystal cell satisfy the following conditional expressions: 0.7(16 cos 2 θ−23.6 cos θ+14.6)(1+0.32( CG− 3.0))< d (1) d< 1.3(16 cos 2 θ−23.6 cos θ+14.6))(1+0.32( CG− 3.0)) (2).