Patent ID: 7929088

Claim:
A liquid crystal display comprising: a vertically aligned liquid crystal cell having first and second surfaces opposite each other and having a liquid crystal material with negative dielectric anisotropy interposed therebetween; first and second polarizers attached to the first and the second surfaces of the liquid crystal cell, respectively; and a first biaxial compensation film having different refractive indexes in three directions 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 axis of the first polarizer, and wherein the difference between the summation of the retardation value of the first biaxial compensation film, (n xD1 −n zb1 )*d b1 and the first and the second polarizers, and the retardation value 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, an x-axis is the same direction as the direction having the largest refractive index in the first biaxial compensation film, n xb1 and n zb1 are respectively the refractive indices along the x-axis and the z-axis of the first biaxial compensation film, and d b1 is the thickness of the first biaxial compensation film.