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. 28, 2012
Filed:
Jun. 09, 2009
Applicant:
Akira Shimazu, Hiratsuka, JP;
Inventor:
Akira Shimazu, Hiratsuka, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 63/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is an electron-emitting device which is excellent in electron-emitting efficiency, and may obtain a large electron-emitting amount and stable electron-emitting characteristics. The electron-emitting device includes: a first conductive film and a second conductive film which are provided through a first gap; first carbon films connected to the first conductive film; and second carbon films which are connected to the second conductive film, and are opposed to the first carbon films through second and third gaps. Continuous concave portions are provided in the second and third gaps.