Electric lamp or space discharge component or device manufacturi – Process – Electrode making
Patent
1991-11-07
1993-04-06
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Electrode making
445 58, H01J 902
Patent
active
051999188
ABSTRACT:
A field emitter device comprising a conductive metal and a diamond emission tip with negative electron affinity in ohmic contact with and protruding above the metal. The device is fabricated by coating a substrate with an insulating diamond film having negative electron affinity and a top surface with spikes and valleys, depositing a conductive metal on the diamond film, and applying an etch to expose the spikes without exposing the valleys, thereby forming diamond emission tips which protrude a height above the conductive metal less than the mean free path of electrons in the diamond film.
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Microelectronics and Computer Technology Corporation
Ramsey Kenneth J.
Sigmond David M.
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