Patent ID: 8599339
Filing Date: 2013-12-03
Classification: G02F

Abstract:
1. A compensation film for a liquid crystal display device, comprising: a plurality of alignment films formed on a substrate, the alignment films having different tilt angles changed successively; and a plurality of liquid crystal layers, each formed by coating cholesteric liquid crystals on each of the alignment films, wherein a pretilt angle of each of the liquid crystal layers is set from each of the alignment films, wherein the cholesteric liquid crystal layers are formed with a multi-layered structure having at least three layers, each cholesteric liquid crystal layer has a substantially fixed tilt angle, and the tilt angles of the cholesteric liquid crystal layers are different from each other and change successively throughout the cholesteric liquid crystal layers, wherein the alignment films layers are formed with a multi-layered structure having at least three layers, wherein the cholesteric liquid crystal layers are hardened by ultraviolet light or ion beams and each of the cholesteric liquid crystal layers are fixed as a film, and wherein a pitch of the cholesteric liquid crystals is controlled so as to change a phase of the cholesteric liquid crystals in the visible ray range.