Field emission cathode capable of amplifying electron beam...

Details Field emission cathode capable of amplifying electron beam... Field emission cathode capable of amplifying electron beam...

2011-03-29

2011-03-29

Ton, Toan (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C313S495000, C313S310000

Reexamination Certificate

active

07915800

ABSTRACT:
Field emission devices (FEDs) are provided. In one embodiment, an FED includes an electron emitter, a tube spaced apart from the electron emitter and having a first opening and a second opening, and a gate electrode disposed on an outer surface of the tube. The first opening is disposed at one end of the tube adjacent to the electron emitter, and the second opening is disposed at the other end of the tube. The FED further includes an anode that is spaced apart from the second opening and collects secondary electrons emitted from the second opening.

REFERENCES:
patent: 7045947 (2006-05-01), Van Der Vaart et al.
patent: 2007/0063629 (2007-03-01), Tuck
patent: 10-2005-0122954 (2005-12-01), None
Heo et al. (2007). Transmission-type microfocus x-ray tube using carbon nanotube field emitters.Appl. Phys. Lett., 90:1-3.

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