Electric lamp and discharge devices – Discharge devices having a multipointed or serrated edge...
Patent
1992-11-24
1994-08-23
O'Shea, Sandra L.
Electric lamp and discharge devices
Discharge devices having a multipointed or serrated edge...
313355, 257 77, H01J 102, H01J 114
Patent
active
053410637
ABSTRACT:
A field emitter comprising a conductive metal and a diamond emission tip with negative electron affinity in ohmic contact with and protruding above the metal. The field emitter 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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Caywood Michael
Microelectronics and Computer Technology Corporation
O'Shea Sandra L.
Sigmond David M.
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