| 摘要 |
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.
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