Electron emission element

Details Electron emission element Electron emission element

2005-04-05

2005-04-05

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

Discharge devices having a multipointed or serrated edge...

C313S311000, C313S336000, C313S351000, C313S326000, C313S34600R, C313S495000

Reexamination Certificate

active

06876136

ABSTRACT:
An electron emission element according to the present invention comprises a substrate, and a plurality of protrusions composed of diamond and protruding from the substrate. Each protrusion includes a columnar portion, the side face of which forms an inclination of approximately 90° relative to the surface of the substrate, and a tip portion, which is located on the columnar portion having a spicular end. A conductive layer is formed on the upper part of each columnar portion, and a cathode electrode film, which is electrically connected to the conductive layer, is formed on the side face of the columnar portion.

REFERENCES:
patent: 6465941 (2002-10-01), Kubota et al.
patent: P2001-266736 (2001-09-01), None

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