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:
Dec. 13, 2005
Shojiro Komatsu, Tsukuba, JP;
Toyohiro Chikyo, Tsukuba, JP;
Katsuyuki Okada, Tsukuba, JP;
Yusuke Moriyoshi, Tsukuba, JP;
Shojiro Komatsu, Tsukuba, JP;
Toyohiro Chikyo, Tsukuba, JP;
Katsuyuki Okada, Tsukuba, JP;
Yusuke Moriyoshi, Tsukuba, JP;
National Institute For Materials Science, Tsukuba-shi, Ibaraki, JP;
Abstract
In an electron emission method, a voltage is applied to a field electron emission element that has a boron nitride material containing crystal, formed on an element substrate to show a conical projection of the boron nitride material and shows a stable electron emitting property in an atmosphere when a voltage is applied thereto to emit electrons. An electron emission threshold of the field electron emission element falls due to formation of a surface electric dipolar layer by bringing it into contact with an operating atmosphere containing polar solvent gas when applying a voltage to the field electron emission element so as to emit electrons.