Patent ID: 7072014

Claim:
A reflection-type liquid crystal display device, comprising: a first substrate; a second substrate disposed so as to face said first substrate, said second substrate carrying projections and depressions having a reflectivity; a liquid crystal layer having any of positive or negative dielectric anisotropy provided between said first and second substrates; and a polarizer disposed at an outer side of said first substrate, an optical phase compensation film disposed between said first substrate and said polarizer, said optical phase compensation film having a negative dielectric anisotropy in a direction perpendicular to a plane of said first substrate, said optical phase compensation film having a retardation df{(n x +n y )/2−n z } so as to satisfy the relationship 0.4 ≦[df {( n x +n y )/2 −n z }]/( dlcΔn )≦0.7, wherein n x , n y and n z are refractive indices of said optical phase compensation film respectively in an x-direction, a y-direction and a z-direction, dlc is the thickness of said liquid crystal layer, and Δn is a refractive index difference between an extraordinary ray and an ordinary ray in the liquid crystal layer.