Browse Prior Art Database

High Intensity Plasma Display

IP.com Disclosure Number: IPCOM000077577D
Original Publication Date: 1972-Aug-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Dalton, JJ: AUTHOR [+2]

Abstract

In a plasma display panel 1, conductor arrays comprising conductors 3 and 5 are deposited on the inner surface of glass substrates or plates, the substrate 7 on the viewing side of the panel being shown in the drawing. The conductor arrays are insulated from direct contact with the gas by dielectric layers, such as layer 9 on the viewing side of the panel. The glass plates are then edge sealed and filled with an ionizable illuminable gas in the sealed gaseous envelope. By selectively applying an alternating potential which exceeds the breakdown voltage of the gas to the respective orthogonal conductors 3,5, the gas at the intersecting area or cell becomes conductive, and light is emitted from the selected region.

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High Intensity Plasma Display

In a plasma display panel 1, conductor arrays comprising conductors 3 and 5 are deposited on the inner surface of glass substrates or plates, the substrate 7 on the viewing side of the panel being shown in the drawing. The conductor arrays are insulated from direct contact with the gas by dielectric layers, such as layer 9 on the viewing side of the panel. The glass plates are then edge sealed and filled with an ionizable illuminable gas in the sealed gaseous envelope. By selectively applying an alternating potential which exceeds the breakdown voltage of the gas to the respective orthogonal conductors 3,5, the gas at the intersecting area or cell becomes conductive, and light is emitted from the selected region. While the intensity of illumination can be controlled by varying various parameters in the panel, it is desirable to accomplish increased brightness with minimum modification of the plasma panel structure or associated circuitry. A mirrored surface 11 on the nonviewing side of the panel causes the light emanating from selected cells to be reflected, thus substantially increasing the apparent light output from the panel. The reflective surface 11 need not be actually mirrored, but may comprise a highly polished glass surface which may be utilized alone, or in combination with a dark surface to increase the contrast ratio of the resultant display.

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