Liquid crystal device

Details Liquid crystal device Liquid crystal device

1992-07-28

1994-03-08

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 56, 359 63, 345 87, G02F 1133

Patent

active

052935345

ABSTRACT:
A liquid crystal device is formed by disposing a ferroelectric smectic liquid crystal having two stable molecular orientation states between opposite electrodes formed on a pair of substrates, and disposing a polarizer and an analyzer in proximity with the substrates so that one of the two molecular orientation states provides a bright state and the other molecular orientation state provides a dark state. In case where a domain with a minor areal size changing with time occurs in an effective display area in either one (or both) of the bright and dark display states of the display area, the polarizer and analyzer are disposed in such a position that the domain with a minor areal size changing with time is present (in a larger total area when it is present) in the bright state (than when it is present in the dark state), whereby improvements are attained in respects of flickering persistence, contrast and/or transmittance.

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