Electric lamp and discharge devices – With gas or vapor – Three or more electrode discharge device
Patent
1997-07-31
1999-06-29
Day, Michael
Electric lamp and discharge devices
With gas or vapor
Three or more electrode discharge device
313491, 313584, 313633, 445 51, 445 50, H01J 1749
Patent
active
059172843
ABSTRACT:
A conductive refractory compound coating for electrodes is sputter resistant, very resistant to oxidation, and easy to apply by way of electrophoresis or screen printing. This structure is further enhanced by the presence of surface particles of electrically nonconductive ceramic material. When the cathode electrode is energized, electrically nonconductive material is penetrated by the electric field, which attracts secondary electrons out of the cathode electrode, thereby increasing the cathode's efficiency as an emitter of secondary electrons. More specifically, cathode electrodes are used in a plasma addressing structure. The coating is formed by approximately 5 nm particles, each comprised of a fused matrix of conductive and nonconductive particles co-deposited with frit particles by either electrophoresis or "silk" screening. The coating is subsequently baked to fuse the frit and bond the electrophoretically deposited particles to the electrodes.
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Patent Abstracts Of Japan vol. 018, No. 586 (E-1627) Nov. 9, 1994, & JP Publication No. 06223725, Aug. 12, 1994 (Mitsubishi Electric Corp.).
Kephart Donald E.
Moore John S.
Stein William W.
Angello Paul S.
Day Michael
Tektronix Inc.
Winkelman John D.
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