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:
May. 24, 2005
Filed:
Feb. 26, 2003
Hironobu Mizuno, Kanagawa, JP;
Takashi Iwaki, Tokyo, JP;
Toshihiko Takeda, Kanagawa, JP;
Noritake Suzuki, Kanagawa, JP;
Kazuya Miyazaki, Kanagawa, JP;
Koki Nukanobu, Kanagawa, JP;
Hironobu Mizuno, Kanagawa, JP;
Takashi Iwaki, Tokyo, JP;
Toshihiko Takeda, Kanagawa, JP;
Noritake Suzuki, Kanagawa, JP;
Kazuya Miyazaki, Kanagawa, JP;
Koki Nukanobu, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a process of reducing a resistivity of a polymer film for carbonization in a surface conduction electron-emitting device, by irradiating an energy beam onto the polymer film, when an energy intensity of the beam given in a unit area in a unit time is assumed to be W W/m, W satisfies a formula W≧2×T×(ρ·C·λ/τ), where T is defined as a temperature ° C. at which the polymer film is heated for one hour in a vacuum degree of 1×10Pa to reduce a resistivity of the polymer film to 0.1 Ω·cm, Cis a specific heat J/kg·K of the substrate, ρis a specific gravity kg/mof the substrate, λis a heat conductivity W/m·K of the substrate, and τ is an irradiation time in the range of 10sec to 10 sec.