Ferroelectric liquid crystal display device having an A.C. holdi

Details Ferroelectric liquid crystal display device having an A.C. holdi Ferroelectric liquid crystal display device having an A.C. holdi

1984-12-10

1987-12-29

Miller, Stanley D.

350333, G02F 113

Patent

active

047156880

ABSTRACT:
A liquid crystal display device utilizing a ferroelectric liquid crystal, e.g., a chiral smectic liquid crystal aligned to establish two bi-stable display states. The display device is driven in a time-sharing mode. The change of the bi-stable display states is effected by applying a selected voltage to the changed ferro-electric liquid crystal. Thereafter the display state is held by applying an A.C. pulse voltage.

REFERENCES:
patent: 4367924 (1983-01-01), Clark et al.
patent: 4508429 (1985-04-01), Nagae et al.
patent: 4548476 (1985-11-01), Kaneko

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