Method apparatus for driving liquid crystal device and apparatus for driving liquid crystal device

摘要

A method for driving a liquid crystal device to record an image on the liquid crystal device is provided. The liquid crystal device has: a pair of electrodes; and a liquid crystal layer of cholestric liquid crystal sandwiched between the pair of electrodes. The method includes: applying a voltage V1 higher than a threshold value of a phase change to the homeotropic phase to make the liquid crystal layer to be in a homeotoropic phase; applying selectively two voltages V2H and V2L higher than the voltage V1 to each portion of the liquid crystal layer; and applying a voltage V3 under a condition of such a magnification and application time that a portion to which the voltage V2H has been applied changes to a planar phase and a portion to which the voltage V2L has been applied changes to a focal conic phase.