AC plasma panel with system for preventing high voltage buildup

Details AC plasma panel with system for preventing high voltage buildup AC plasma panel with system for preventing high voltage buildup

1995-02-01

1999-11-23

Shalwala, Bipin H.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 58, 345 60, 345209, 31511131, 315326, G09G 328

Patent

active

059908548

ABSTRACT:
An AC plasma panel display includes front and back panels that respectively support a first parallel electrode pattern and a second orthogonally oriented, parallel electrode pattern. The electrode patterns define a display area and both patterns are covered by dielectric layers. A dischargeable gas is positioned between the dielectric layers in the known manner. Driver circuitry is coupled to both electrode patterns for creating a spatially continuous gas discharge along at least one continuous electrode of one electrode pattern and across the entire display area. The driver circuitry scans the spatially continuous gas discharge across remaining parallel electrodes of the one electrode pattern so as to scan the entire display area. A further electrode is in DC conductive communication with the gas and is positioned outside of the display area but in contact with the spatially continuous gas discharge during its scanning action. The electrode provides a capacitive structure which prevents a build-up of an excessive static charge on the dielectric layers and thereby prevents dielectric breakdown.

REFERENCES:
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patent: 4079370 (1978-03-01), Mikoshiba et al.
patent: 4591847 (1986-05-01), Criscimagna et al.
patent: 4772884 (1988-09-01), Weber et al.
"Improvement of Luminance and Luminous Efficiency of Surface-Discharge Color ac PDP", T. Shinoda et al., SID 91 Digest, pp. 724-727.

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