Patent ID: 6025899
Filing Date: 2000-02-15
Classification: G02F

Abstract:
A liquid crystal display comprising:a first substrate having a transparent electrode formed on a surface and a non-aperture portion in a predetermined region;a second substrate arranged to be separated from and opposed to said first substrate, a member having a color filter function and a transparent electrode being formed on said second substrate;a liquid crystal layer sandwiched between said first and second substrates; anda backlight optical system arranged on a side of said second substrate away from said first substrate,wherein said member formed on said second substrate and having a color filter function is patterned in accordance with a display unit controlled by said two transparent electrodes and is a color reflecting layer stack constituted by a stack of a first planar-oriented cholesteric liquid crystal layer having a first chiral pitch and a second planar-oriented cholesteric liquid crystal layer having a second chiral pitch different from the first chiral pitch, andsaid color reflecting layer stack has a three-layered stacked region formed by further stacking a third planar-oriented cholesteric liquid crystal layer having a third chiral pitch different from the first and second chiral pitches, said three-layered stacked region corresponding to said non-aperture portion of said first substrate and having a function of returning light from said non-aperture portion to said backlight optical system.