Patent ID: 6812913
Filing Date: 2004-11-02
Classification: G02F,G09G

Abstract:
A method for driving a liquid crystal display which comprises liquid crystal which exhibits a cholesteric phase and is capable of keeping an image displayed thereon after turn-off of an electric field applied thereto, said method comprising:a reset step of applying a reset pulse to make the liquid crystal come to a homeotropic state; a selection step of, after the reset step, selecting a final state of the liquid crystal; and an evolution step of, after the selection step, applying an evolution pulse to stabilize the liquid crystal to the final state selected in the selection step; wherein the selection step comprises: a first step which comprises a time of applying substantially 0 volt to the liquid crystal; a second step of, after the first step, applying a selection pulse to select the final state of the liquid crystal; and a third step, after the second step, which comprises a time of applying substantially 0 volt to the liquid crystal.