Multi-electron source, image-forming device using multi-electron

Electric lamp and discharge devices – Discharge devices having a thermionic or emissive cathode

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H01J 100

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active

055788971

ABSTRACT:
A multi-electron source has a plurality of electron emitting portions arranged on a substrate. Each electron emitting portion comprises a conductive film containing a crack with an average width of 0.05 .mu.m to 1 .mu.m. The electron emitting portions are prepared by subjecting conductive films, preferably of fine particles, to a pulse voltage application treatment.

REFERENCES:
patent: 3735186 (1973-05-01), Klopfer et al.
patent: 5023110 (1991-06-01), Nomura et al.
patent: 5066883 (1991-11-01), Yoshioka et al.
patent: 5155416 (1992-10-01), Suzuki et al.
patent: 5304815 (1994-04-01), Suzuki et al.

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