Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-03-11
1996-07-09
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 92, 345 98, 359 59, G09G 336
Patent
active
055348840
ABSTRACT:
An electro-optical device system and a method of driving a liquid crystal display panel thereof capable of constructing clear visual images with low power consumption are described. In the display panel, a plurality of conductive pads are opposed to a back electrode with a liquid crystal layer inbetween. Control signals are supplied to the conductive pads through complementary transistors comprising a p-channel field effect transistor and an n-channel field effect transistor connected between V.sub.DD and V.sub.SS lines of a control circuit. The information being displayed is simultaneously stored in a first memory. Information desired to be displayed is stored in a second memory and compared with the content of the first memory to produce exclusive ORs thereof. The display panel is driven only when and where the information desired to be displayed is dissimilar to the information being displayed.
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patent: 4685769 (1987-08-01), Fukuma et al.
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patent: 5132677 (1992-07-01), Nicholas
patent: 5165075 (1992-11-01), Hiroki et al.
Mase Akira
Yamazaki Shunpei
Ferguson Jr. Gerald J.
Hjerpe Richard
Luu Matthew
Semiconductor Energy Laboratory Co,. Ltd.
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