Patent ID: 6791644
Filing Date: 2004-09-14
Classification: G02F

Abstract:
A reflective liquid-crystal display comprising:a display assembly composed of a first transparent nonpiezoelectric-plate having a first transparent electrode under thereof, a second transparent nonpiezoelectric-plate having a second transparent electrode over thereof, and a liquid crystal between said first- and second transparent electrodes; and a piezoelectric assembly composed of a piezoelectric substrate, at least one electrode under said piezoelectric substrate, and a counter electrode over said piezoelectric substrate, said display assembly being formed on said piezoelectric assembly, said at least one electrode and said counter electrode receiving a first electric signal, exciting a thickness-mode vibration in said piezoelectric substrate, generating an elastic wave in said liquid crystal, and causing said liquid crystal to be in an opaque state, said first- and second transparent electrodes receiving a second electric signal, applying electric field to at least a part of said liquid crystal, and causing said at least a part of said liquid crystal to be in a transparent state, and said counter electrode reflecting a light through said at least a part of said liquid crystal.