Patent ID: 7019804

Claim:
A liquid crystal display device comprising: a liquid crystal cell formed by a pair of transparent substrates each provided with an electrode and a liquid crystalline substance layer sandwiched between said transparent substrates; a pair of polarizers disposed on opposite sides of said liquid crystal cell; and an optical compensation element disposed on at least one side of said liquid crystal cell between said liquid crystal cell and one of said polarizers, a driving voltage being applied on the liquid crystalline substance layer by selecting the voltage from two or more voltages; wherein the twist angle of said liquid crystal cell is set to 180 to 270 degrees; wherein said optical compensation element has a twisted structure twisted in the opposite direction to that of said liquid crystal cell; wherein the difference in the absolute values of the twist angles between said liquid crystal cell and said optical compensation element is from 40 to 100 degrees; wherein the difference in retardation at a wavelength λ=550 nm between said liquid crystal cell and said optical compensation element is from 100 to 250 nm; and wherein when the absolute values of the differences in retardation at wavelengths λ of 400 nm and 550 nm between said liquid crystal cell and said optical compensation element are represented by ΔR(400) and ΔR(550), respectively, and the ratio D therebetween is represented by D=ΔR(400)/ΔR(550), D is within the range of 0.5 to 1.0.