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:
Dec. 03, 2002
Filed:
Jan. 15, 1999
Sony Corporation, , JP;
Abstract
An electron emitting apparatus having excellent mechanical strength and capable of satisfactorily emitting electrons even if a high electric field is applied and a manufacturing method therefor are disclosed. The electron emitting apparatus according to the present invention incorporates a first gate electrode formed on a substrate, a cathode formed on the first gate electrode through a first insulating layer and having a projection projecting over the first insulating layer and a second gate electrode formed on the cathode through a second insulating layer. The electron emitting apparatus has the cathode structured such that the projection has an inclined surface, the thickness of which is reduced toward the leading end.