AC Operated flat panel liquid crystal display

Details AC Operated flat panel liquid crystal display AC Operated flat panel liquid crystal display

1976-11-29

1978-07-11

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

340324M, 350333, H04N 566, G02F 118, G02F 932, G02F 116

Patent

active

041005791

ABSTRACT:
A flat panel liquid crystal display system formed by sandwiching a thin layer of liquid crystal material between a front electrode structure, split into rows or columns, and a back electrode structure formed into desired patterns and including addressing circuitry is described. Single polarity operation of a liquid crystal display system in which the direction of current flow in the liquid crystal material is reversed at the frame rate is a feature of the invention. Operation is accomplished so as to permit gray scale rendition as response to an applied video signal. Addressing circuitry demonstrating the applicability of large scale integration (LSI) techniques is also an important element of the invention.

REFERENCES:
lechner et al., "Liquid Crystal Displays", Proceedings of the IEEE, vol. 59, No. 11, Nov., 1971, pp. 1566-1579.

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