Browse Prior Art Database

Method for Cell Isolation and High Resolution Gas Plasma Panels

IP.com Disclosure Number: IPCOM000084074D
Original Publication Date: 1975-Sep-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Anderson, LC: AUTHOR

Abstract

In gaseous discharge or plasma display panels, conductor arrays are disposed on glass plates and positioned substantially orthogonal to each other, a dielectric coating is applied over the conductors to isolate the conductors from direct contact with the gas, and the panel is sealed to form a gaseous envelope.

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Method for Cell Isolation and High Resolution Gas Plasma Panels

In gaseous discharge or plasma display panels, conductor arrays are disposed on glass plates and positioned substantially orthogonal to each other, a dielectric coating is applied over the conductors to isolate the conductors from direct contact with the gas, and the panel is sealed to form a gaseous envelope.

To facilitate operation at a low-operating voltage and afford protection against sputtering, it has been found desirable to utilize dielectric overcoats with a refractory material having relatively high secondary emission characteristics such as magnesium oxide. However, as the resolution or number of lines per inch is increased, the resulting discharge between pairs of selected conductors tends to spread beyond the discharge site which represents a natural phenomenon on planar surfaces. This effect is detrimental in high-resolution panels where optical, electronic and gas behavior crosstalk occurs among adjacent cells.

By coating the dielectric surface with silicon nitride except in the cell site, the plasma discharge is confined to the immediate cell area. The silicon nitride can be photolithographically applied by conventional techniques. The silicon nitride has an extremely low-secondary emission as well as a low-charging capability, and utilized in the area between adjacent cells confines the discharge to the specific cell area.

Referring to the drawing, substrates 1 and 3 have orthogonal...