Method of holding field emission cathode in its standby state

Details Method of holding field emission cathode in its standby state Method of holding field emission cathode in its standby state

1997-06-06

1998-10-20

Wong, Don

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

315 3, 3151693, 313309, H01J 2304

Patent

active

058251340

ABSTRACT:
A field emission cathode has an emitter tip, on a conductive layer, disposed within holes that are formed through an insulating layer deposited on the conductive layer and a gate layer deposited on the insulating layer, respectively. A method according to the present invention comprises the step of applying to the gate layer an activation voltage to activate the emitter tip before operating the field emission cathode with operating gate voltages. The activation voltage is greater than any one of the operating gate voltages but less than a dielectric breakdown voltage.

REFERENCES:
patent: 5543686 (1996-08-01), Huang et al.
patent: 5604401 (1997-02-01), Makishima
patent: 5610478 (1997-03-01), Kato et al.
Yamabe et al; "Thickness Dependence of Dielectric Breakdown Failure of Thermal SiO2 Films"; 1983; pp. 184-190; IEEE.
Spindt et al; "Physical properties of thin-film field emission cathodes with molybdenum cones"; Dec. 1976; pp. 5248-5263; Journal of Applied Physics, vol. 47, No. 12.

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