Browse Prior Art Database

Structure to Reduce Glow Spreading in DC Panel

IP.com Disclosure Number: IPCOM000051781D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 90K

Publishing Venue

IBM

Related People

Aboelfotoh, MO: AUTHOR

Abstract

A DC gaseous discharge display panel utilizes an open internal structur which reduces the discharge glow spreading along the cathode electrodes and eliminates spurious discharges between anode and cathode electrodes normally associated with DC panels.

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Structure to Reduce Glow Spreading in DC Panel

A DC gaseous discharge display panel utilizes an open internal structur which reduces the discharge glow spreading along the cathode electrodes and eliminates spurious discharges between anode and cathode electrodes normally associated with DC panels.

Referring to Fig. 1, orthogonal sets of cathode and anode electrodes 4,6 are deposited or otherwise formed on plate glass substrates 1, 2, respectively. Cathode electrodes 4 are made of a conductive material, such as silver, gold, aluminum or nickel, while a transparent conductive material, such as indium-tin oxide, is used to form anode electrodes 6. Strips of glass dielectric 10 disposed orthogonally to cathode electrodes 4 are applied to plate glass substrate 1 over the cathode electrodes 4. The glass strips are parallel to and positioned between pairs of anode electrodes 6, as shown in Fig. 2.

The cathode electrodes 4 and strips of glass dielectric 10 are then covered with a layer 12 consisting of a mixture of a refractory insulator, such as magnesium oxide, and a metal, such as silver, gold or nickel. The metal is incorporated into the insulating layer 12 to increase the conductivity of the layer and thereby prevent surface charge build-up from developing during operation of the discharge cell. The cathode electrodes 4 are thus protected from ion bombardment by a protective layer which is capable of neither shorting out adjacent cathode electrodes nor developing su...