Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-01-10
1999-03-30
Saras, Steven J.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 66, 313581, 313582, 3151694, G09G 328
Patent
active
058895027
ABSTRACT:
Disclosed herein is a plasma addressed display device which can adaptively control a voltage to be applied to each discharge channel, thereby suppressing an excess applied voltage. The plasma addressed display device includes a flat panel as a display. The flat panel has a laminated structure consisting of a plasma cell having a plurality of rows of discharge channels and a display cell having a plurality of columns of signal electrodes. A drive circuit sequentially supplies an applied voltage to a cathode in each discharge channel to generate a plasma discharge, thereby performing line-sequential scanning. A signal circuit supplies an image signal to each signal electrode in synchronism with the line-sequential scanning. A constant-current circuit operates so that a constant discharge current flows after the generation of the plasma discharge in each discharge channel. A detecting circuit samples a discharge voltage during flowing of the constant discharge current in each discharge channel. A control circuit adaptively controls the applied voltage to be supplied to each discharge channel according to the sampled discharge voltage.
REFERENCES:
patent: 5583527 (1996-12-01), Fujisaki et al.
patent: 5661501 (1997-08-01), Tanamachi
patent: 5684362 (1997-11-01), Togawa
patent: 5696522 (1997-12-01), Iwama
patent: 5745085 (1998-04-01), Tomio et al.
Japanese Abstract, vol. 95, No. 012, Dec. 8, 1995, JP 07319425.
Saras Steven J.
Sony Corporation
Vail Seth D.
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