Ferroelectric display panel of varying thickness and driving met

Details Ferroelectric display panel of varying thickness and driving met Ferroelectric display panel of varying thickness and driving met

1986-01-15

1987-12-15

Miller, Stanley D.

350333, 350334, 350336, G02F 113

Patent

active

047128771

ABSTRACT:
A driving method for a liquid crystal device of the type comprising a picture element formed by a first electrode, a second electrode oppositely spaced from the first electrode, and a ferroelectric liquid crystal disposed at the opposite portion between the first and second electrodes and having a varying layer thickness. The driving method comprises: a first step of applying a voltage signal between the first and second electrodes for orienting a region extending over the whole area of the picture element to either one of a first and a second state, and a second step of applying a pulse with a waveform corresponding to gradation information between the first and second electrodes to switch the state of a region defining a prescribed area of the picture element from one state resultant in the first step to the other state.

REFERENCES:
patent: 4264149 (1981-04-01), De Zwart et al.
patent: 4641922 (1987-02-01), Jacob
Clark, N. A. et al., "Submicrosecond Bistable Electrooptic Switching in Liquid Crystals", Appl. Phys. Lett., vol. 36, No. 11, Jun. 1980, pp. 899-901.

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