The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2000
Filed:
Aug. 18, 1997
Hisashi Takemura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An electric field emission cold cathode which is free of short-circuited damage upon discharge is provided by forming a highly voltage-withstandable control mechanism, which is capable of limiting generation of current upon discharge, with a simple structure and through simple fabrication processes. The electric field emission cold cathode includes a sharp-pointed emitter, a gate electrode having an aperture surrounding the emitter, and a cathode electrode connected to the emitter. The electric field emission cold cathode further includes an n-type diffused layer connected to the emitter and the cathode electrode, and a p-type silicon substrate electrically connected to the cathode electrode at least at a side thereof facing the emitter. A pinch-off resistor is provided between the emitter and the cathode electrode. The pinch-off resistor has a saturation current value smaller than a short-circuit breakdown current of the emitter.