Patent ID: 6795148
Filing Date: 2004-09-21
Classification: G02F

Abstract:
A liquid crystal display device, comprising:a liquid crystal cell including an upper substrate on the viewing side, a lower substrate opposing the upper substrate, and a liquid crystal layer held between the upper substrate and the lower substrate; a color filter layer including a plurality of pigmented films containing different color pigments and a transflective layer including cholesteric liquid crystal films to reflect part of light elliptically polarized in a predetermined direction and to transmit part of the light elliptically polarized in the predetermined direction that are disposed on the inner surface of the lower substrate, in that order, such that the pigmented films are located between the lower substrate and the transflective layer; an upper elliptically polarized light transmitting device to allow the elliptically polarized light to enter the liquid crystal layer from above the upper substrate; and a lower elliptically polarized light transmitting device to allow the elliptically polarized light to enter the liquid crystal layer from below the lower substrate; the liquid crystal layer reversing the polarization of the elliptically polarized light either when a selection voltage is applied or when a non-selection voltage is applied, and not changing the polarization when the other voltage is applied; and at least part of the transmission spectrum of each pigmented film included in the color filter layer overlapping with the reflection spectrum of the corresponding cholesteric liquid crystal film.