Power conserving driver circuit for liquid crystal displays

Details Power conserving driver circuit for liquid crystal displays Power conserving driver circuit for liquid crystal displays

1991-12-23

1993-01-19

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 84, 340784, G02F 113

Patent

active

051811316

ABSTRACT:
A driving circuit for a non-volatile liquid crystal display conserves battery power by applying a first set of electric fields to the display through an electrode array for a defined period of time, and then removing these fields for a second, longer period of time. The display picture produced by he first set of fields continues to be displayed during the second period when the fields are removed, due to the non-volatile characteristic of the liquid crystal layer. The circuit then applies a second set of electric fields to the display to change the picture produced.

REFERENCES:
patent: 4508429 (1985-04-01), Nagae
patent: 4773716 (1988-09-01), Nakanowatari
patent: 4909607 (1990-03-01), Ross
patent: 5011269 (1991-04-01), Wakita et al.
patent: 5107354 (1992-04-01), Yamazaki

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