Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1991-10-21
1994-01-11
Weldon, Ulysses
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
313495, 3151693, G09G 330
Patent
active
052785440
ABSTRACT:
A bistable electrooptical device, screen incorporating such a device and process for producing the screen, are provided. The device according to the present invention comprises at least one bistable element contained in a vacuum enclosure formed from a first and a second substrate, which substrates are hermetically sealed together. The bistable element comprises, on the first substrate, a first layer of a conductive material, a layer of photoconductive material, a layer of a cathodoluminiscent material, and a microtip emissive cathode electrode source, or the like, for exciting the cathodoluminiscent material. A screen according to the invention incorporates several bistable elements arranged in matrix-like configuration. In a preferred embodiment of the screen, the photoconductive material links two conductive material layers, one making up a conductive column of the screen and the other defining the geometry of the pixel. The present invention finds particular utility in the field of electrooptical memories and to high definition display fabrication.
REFERENCES:
patent: 4140941 (1979-02-01), Uemura
patent: 4737781 (1988-04-01), Robillard
patent: 4801850 (1989-01-01), Kagan
patent: 4908539 (1990-03-01), Meyer
patent: 4924148 (1990-05-01), Schwartz
patent: 5194780 (1993-03-01), Meyer
Commissariat a l''Energie Atomique
Liang Regina
Weldon Ulysses
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