Patent ID: 6943858

Claim:
A liquid crystal display comprising: a vertically aligned liquid crystal cell having a first surface and a second surface opposite each other and having a liquid crystal material with negative dielectric anisotropy; a first and a second polarizers attached to the first and the second surfaces of the liquid crystal cell respectively; and a first biaxial compensation film and a first c-plate compensation film disposed between the first surface of the liquid crystal cell and the first polarizer, wherein a direction having a largest refractive index in the first biaxial compensation film is parallel or perpendicular to the polarizing direction of the first polarizer, wherein the difference between the summation of the retardation (n xb1 −n zb1 )*d b1 of the first biaxial compensation film, the retardation (n xc1 −n zc1 )*d c1 of the first c-plate compensation film and the retardation of the first and the second polarizers, and the retardation due to birefringence of the liquid crystal cell is equal to or less than 15% of the retardation value due to birefringence of the liquid crystal cell, where a z-axis is perpendicular to the first plane of the liquid crystal cell, a x-axis is the same direction as the direction having a largest refractive index in the first biaxial compensation film, n xb1 , n zb1 , n xc1 and n xc1 are the refractive indices along the x-axis and the z-axis of the first biaxial and the first c-plate compensation film, respectively, and d b1 and d c1 are the thickness of the first biaxial and the first c-plate compensation films, respectively.