Patent ID: 6067136
Filing Date: 2000-05-23
Classification: G02F

Abstract:
A birefringence-type color liquid crystal display device, comprising:a liquid crystal cell having a twist angle from 180 to 270.degree. which is made by filling a nematic liquid crystal between a pair of transparent substrates having electrodes on confronting inside surfaces thereof;a twisted retardation film provided on a visible side of said liquid crystal cell;an absorption-type polarizing film disposed on an outside of said twisted retardation film; anda reflection-type polarizing film disposed on a side opposite to the visible side of said liquid crystal cell, whereinsaid absorption-type polarizing film is a polarizing film which absorbs linearly polarized light vibrating in a direction perpendicular to a transmittable axis of said polarizing film;said reflection-type polarizing film is a polarizing film which reflects linearly polarized light vibrating in a direction perpendicular to a transmittable axis of said polarizing film,said twisted retardation film having a .DELTA.nd value that is equal to a .DELTA.nd value of said liquid crystal cell, andsaid transmittable axis of said reflection-type polarizing film forms an angle of 45.degree. with respect to a long axis direction of the liquid crystal molecules contacting with the inside surface of the substrate which is on the side of said reflection-type film of said crystal cell.