Emitter

Details Emitter Emitter

2006-06-20

2006-06-20

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

Electrode and shield structures

Point source cathodes

C313S309000, C313S351000, C313S495000, C313S311000, C257S101000, C257S103000, C257S219000

Reexamination Certificate

active

07064476

ABSTRACT:
Electron emitters and a method of fabricating emitters are disclosed, having a concentration gradient of impurities, such that the highest concentration of impurities is at the apex of the emitters and decreases toward the base of the emitters. The method comprises the steps of doping, patterning, etching, and oxidizing the substrate, thereby forming the emitters having impurity gradients.

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