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Browse Prior Art Database

High Resolution AC Gaseous Discharge Panel with Improved Light Output

IP.com Disclosure Number: IPCOM000051121D
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Aboelfotoh, MO: AUTHOR

Abstract

This article describes a gas panel structure which has a large capacitance and includes a resistive layer which, together, result in a discharge current waveform having increased light output without raising the peak of that current.

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High Resolution AC Gaseous Discharge Panel with Improved Light Output

This article describes a gas panel structure which has a large capacitance and includes a resistive layer which, together, result in a discharge current waveform having increased light output without raising the peak of that current.

In a high-resolution gaseous discharge display panel, parallel conductor arrays are formed on a pair of glass plates with the conductor arrays being substantially orthogonal to each other. These conductor arrays are then covered with a dielectric to eliminate direct contact between the conductors and the gas, the dielectric surface in contact with the gas having a surface of a refractory material having high secondary-electron emission characteristics, such as magnesium oxide. The two glass plates are then sealed about their edges, and the panels are filled with a Penning gas mixture, such as neon-argon.

In order to minimize cell to cell interaction in high-resolution gaseous discharge display panels, the panels are normally fabricated with smaller chamber gaps, resulting in a substantial decrease in the light output of the device. The light output of the device can be increased significantly by modifying the shape of the current waveform, as illustrated in Figs. 1 and 2, Where Fig. 1 shows the current waveform for a conventional device and Fig. 2 for the device described in Fig. 3. This modification in the shape of the current waveform is achieved by the utilization of the panel structure shown in Fig. 3.

Referring to Fig. 3, a pair of glass plates 1 and 3 have orthogonal conductor arrays 5 and 7 formed thereon, the arrays 5 and 7 having an evaporative dielectric glass layer 9 and a resistive layer 11 having a sheet resisti...