Electron emission device with improved focusing of electron...

Details Electron emission device with improved focusing of electron... Electron emission device with improved focusing of electron...

2005-04-28

2009-11-03

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C313S495000, C313S306000, C313S309000, C313S310000

Reexamination Certificate

active

07612493

ABSTRACT:
An electron emission device for focusing the electrons emitted from electron emission regions and uniformly controlling the pixel emission characteristic. The electron emission device includes first and second substrates facing each other, and cathode electrodes having first electrode portions formed on the first substrate along one side thereof, and second electrode portions spaced apart from the first electrode portions at a predetermined distance. Electron emission regions are formed on the second electrode portions. Focusing electrodes fill the gap between the first and the second electrode portions while being extended toward the second substrate with a thickness greater than the thickness of the electron emission regions. Gate electrodes are formed on the cathode electrodes by interposing an insulating layer with openings exposing the electron emission regions.

REFERENCES:
patent: 6062931 (2000-05-01), Chuang et al.
patent: 6097138 (2000-08-01), Nakamoto
patent: 6338662 (2002-01-01), Spindt et al.
patent: 6650043 (2003-11-01), Derraa
patent: 2003/0128647 (2003-07-01), Birecki et al.
patent: 2004/0004429 (2004-01-01), Oh et al.
patent: 2004/0145305 (2004-07-01), Tsujimura
patent: 2004/0232823 (2004-11-01), Nakata et al.

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