Electron emission device and display device for emitting electro

Details Electron emission device and display device for emitting electro Electron emission device and display device for emitting electro

1998-03-03

1999-10-05

Patel, Nimeshkumar D.

Electric lamp and discharge devices

Discharge devices having a thermionic or emissive cathode

313506, 313509, 313495, H01J 102

Patent

active

059629592

ABSTRACT:
An electron emission device exhibits a high electron emission efficiency. The device includes an electron supply layer of metal or semiconductor, an insulator layer formed on the electron supply layer, and a thin-film metal electrode formed on the insulator layer. The insulator layer is made of a polycrystal dielectric substance and has a film thickness of 50 nm or greater and has a polycrystal phase with an average grain size of 5 to 100 nm as a major component and an amorphous phase as a minor component. When an electric field is applied between the electron supply layer and the thin-film metal electrode, the electron emission device emits electrons.

REFERENCES:
patent: 4952526 (1990-08-01), Pribat et al.
patent: 5390072 (1995-02-01), Anderson et al.
patent: 5448133 (1995-09-01), Ise
patent: 5646474 (1997-07-01), Pryor
patent: 5894189 (1999-04-01), Ogasawara et al.

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