Method apparatus for driving liquid crystal device and...

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

Reexamination Certificate

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Details

C345S089000, C345S090000, C345S095000, C345S098000, C345S099000

Reexamination Certificate

active

08035587

ABSTRACT:
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 V1higher 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 V1to each portion of the liquid crystal layer; and applying a voltage V3under 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.

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