Liquid crystal displays

摘要

A liquid crystal display comprises two parallel spaced substrates and a liquid crystal layer with negative dielectric anisotropy interposed between the substrates. The ratio d/p, the cell gap d between the substrates to the pitch p of the liquid crystal layer, is equal to or less than 0.3, and the retardation value Δn*d may be in the range of 0.25-0.4. In absence of electric field, the liquid crystal molecules are arranged vertically to the substrates, and when the sufficient electric field is applied, the liquid crystal molecules are parallel to the substrates and twisted by 90° from one substrate to the other.

主权项

1. A liquid crystal display, comprising:
a vertically aligned liquid crystal cell including first and second surfaces opposite each other and including a liquid crystal material with negative dielectric anisotropy interposed therebetween; first and second polarizers attached to the first and second surfaces of the liquid crystal cell, respectively; and a first compensation film and a second compensation film disposed between the first surface of the liquid crystal cell and the first polarizer, wherein a first retardation value of the first compensation film plus a retardation value of the second compensation film plus retardation values of the first and second polarizers minus a retardation value due to birefringence of the liquid crystal cell is equal to or less than about 15% of the retardation value due to birefringence of the liquid crystal cell.