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. 20, 2010
Filed:
Jun. 19, 2007
Fumio Kishi, Kanagawa-ken, JP;
Masato Yamanobe, Tokyo, JP;
Takeo Tsukamoto, Kanagawa-ken, JP;
Toshikazu Ohnishi, Kanagawa-ken, JP;
Keisuke Yamamoto, Kanagawa-ken, JP;
Sotomitsu Ikeda, Kanagawa-ken, JP;
Yasuhiro Hamamoto, Tokyo, JP;
Kazuya Miyazaki, Kanagawa-ken, JP;
Fumio Kishi, Kanagawa-ken, JP;
Masato Yamanobe, Tokyo, JP;
Takeo Tsukamoto, Kanagawa-ken, JP;
Toshikazu Ohnishi, Kanagawa-ken, JP;
Keisuke Yamamoto, Kanagawa-ken, JP;
Sotomitsu Ikeda, Kanagawa-ken, JP;
Yasuhiro Hamamoto, Tokyo, JP;
Kazuya Miyazaki, Kanagawa-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electron-emitting device comprises a pair of electrodes and an electroconductive film arranged between the electrodes and including an electron-emitting region carrying a graphite film. The graphite film shows, in a Raman spectroscopic analysis using a laser light source with a wavelength of 514.5 nm and a spot diameter of 1 μm, peaks of scattered light, of which 1) a peak (P) located in the vicinity of 1,580 cmis greater than a peak (P) located in the vicinity of 1,335 cmor 2) the half-width of a peak (P) located in the vicinity of 1,335 cmis not greater than 150 cm.