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:
Feb. 01, 2000
Filed:
Mar. 10, 1998
Junji Itoh, Tsukuba, JP;
Seigo Kanemaru, Tsukuba, JP;
Abstract
A cold electron emission device including an emitter having a protrusion having a sharp tip and disposed at a first end of a semiconductor thin film formed on an insulation substrate; a cathode electrode disposed at a second end of the semiconductor thin film; at least one gate electrode disposed between the emitter and the cathode electrode for controlling a current flowing through the semiconductor thin film; an insulating layer arranged to cover the semiconductor thin film, cathode electrode and gate electrode, except for the emitter; and a lead electrode arranged on the insulating layer such that it surrounds the tip of the emitter, thereby making it possible to achieve a cold electron emission device with reliable current stability.