Cold cathode device

Details Cold cathode device Cold cathode device

1990-04-30

1991-02-19

Boudreau, Leo H.

Electric lamp and discharge devices

Discharge devices having three or more electrodes

313302, 313303, 313305, H01J 146

Patent

active

049947087

ABSTRACT:
A cold cathode device wherein a cold cathode and an anode face each other with an electron transit path intermediated therebetween, and one or more control electrodes structurally insulated from the said cathode and the anode, are provided exposing to the electron transit path. A cold cathode vacuum tube has an electron emission element having a p-type semiconductor region on an electron emission side and a work function lowering region with junctional relation to the p-type semiconductor region; and a plate electrode structurally insulated from the electron emission element by using an insulation layer which is formed with an electron transmit path corresponding in position to an electron emission area of the electron emission element.

REFERENCES:
patent: 3755704 (1973-08-01), Spindt et al.
patent: 3872352 (1975-03-01), Sasaki et al.
patent: 3921022 (1975-11-01), Levine
patent: 3970887 (1976-07-01), Smith et al.
patent: 4008412 (1977-02-01), Yuito et al.
patent: 4370797 (1983-02-01), Van Gorkom et al.

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