Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1991-03-28
1994-03-22
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345149, G09G 336
Patent
active
052968707
ABSTRACT:
A matrix display device, suitable for displaying TV pictures, has a plurality of display elements (20) arranged in a matrix array and defined by electrodes (33 and 41) on opposing substrates with, for example, liquid crystal material (32) therebetween and with the display elements being individually controllable via switching elements (40) such as thin film transistors. Each display element is sub-divided into a plurality of sub-elements using a plurality of sub-electrodes (55) on one substrate which are each connected via a series capacitor (C.sub.X) to a switching element, the ratio of capacitances of the sub-elements to their respective series capacitors differing from one another. As applied voltage is increased, progressively more sub-elements are caused to change state providing in effect various grey scale levels. Display materials having comparatively sharp switching characteristics can be used.
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patent: 4661809 (1987-04-01), Anderson et al.
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patent: 4747671 (1988-05-01), Takahashi et al.
patent: 4791417 (1988-12-01), Bobak
Robert L. Shrader, "Electronic Communication", copyright 1959, pp. 115-121.
"The International Dictionary of Physics and Electronics", copyright 1961, p. 177.
Fox John C.
Hjerpe Richard
U.S. Philips Corporation
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