Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly
Patent
1997-10-02
2000-03-14
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
With assembly or disassembly
445 50, H01J 902
Patent
active
060365668
ABSTRACT:
The microtips of charge emitting material, which define the cathode of the flat FED screen and face the grid of the screen, are tubular and have portions with a small radius of curvature. The microtips are obtained by forming openings in the dielectric layer separating the cathode connection layer from the grid layer, depositing a conducting material layer to cover the walls of the openings, and anisotropically etching the layer of conducting material to form inwardly-inclined surfaces with emitting tips. Subsequently, the portions of the dielectric layer surrounding the microtips are removed.
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European search report from European application No. 96 830509.4, filed Oct. 4, 1996.
Baldi Livio
Marangon Maria Santina
Galanthay Theodore E.
Morris James H.
Ramsey Kenneth J.
SGS--Thomson Microelectronics S.r.l.
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