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:
Nov. 06, 2007
Filed:
Oct. 20, 2004
Taiko Motoi, Kanagawa-Ken, JP;
Masato Yamanobe, Tokyo, JP;
Rie Ueno, Kanagawa-Ken, JP;
Toshiaki Aiba, Kanagawa-Ken, JP;
Kumi Nakamura, Kanagawa-Ken, JP;
Masaaki Shibata, Kanagawa-Ken, JP;
Taiko Motoi, Kanagawa-Ken, JP;
Masato Yamanobe, Tokyo, JP;
Rie Ueno, Kanagawa-Ken, JP;
Toshiaki Aiba, Kanagawa-Ken, JP;
Kumi Nakamura, Kanagawa-Ken, JP;
Masaaki Shibata, Kanagawa-Ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is an electron-emitting device with high electron emission efficiency and with stable electron emission characteristics over a long period. The electron-emitting device has a substrate, first and second carbon films laid with a first gap in between on the surface of the substrate, and first and second electrodes electrically connected to the first carbon film and to the second carbon film, respectively. In the electron-emitting device, a narrowest gap portion between the first carbon film and the second carbon film in the first gap is located above a surface of the substrate and the substrate has a depressed portion, at least, in the first gap.