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:
Jun. 01, 2010
Filed:
Mar. 28, 2007
Eiichi Ohta, Kanagawa, JP;
Takuro Sekiya, Kanagawa, JP;
Naomi Sugimoto, Kanagawa, JP;
Yukimichi Someya, Tokyo, JP;
Shohji Tanaka, Kanagawa, JP;
Yasuo Katano, Kanagawa, JP;
Yoshihiko Iijima, Miyagi, JP;
Toshihiro Ishii, Miyagi, JP;
Eiichi Ohta, Kanagawa, JP;
Takuro Sekiya, Kanagawa, JP;
Naomi Sugimoto, Kanagawa, JP;
Yukimichi Someya, Tokyo, JP;
Shohji Tanaka, Kanagawa, JP;
Yasuo Katano, Kanagawa, JP;
Yoshihiko Iijima, Miyagi, JP;
Toshihiro Ishii, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electron emission element according to the present invention is compact, thin and low cost, and has a structure and constitution in which deterioration of the electron emission material itself is low. In the electron emission element, boron nitride material is used as the electron emission material, and a metal material or a semiconductor material is used as a substrate for forming the boron nitride material. In this way it is possible to obtain good quality boron nitride material on the substrate. Also, a voltage can be applied to the material to emit electrons, also electrons can be supplied. Moreover, by using Sp-bonded boron nitride as the boron nitride material, and using Sp-bonded 5H—BN material or Sp-bonded 6H—BN material as the Sp-bonded boron nitride, a field electron emission element can be achieved for which high efficiency electron emission characteristics unprecedented in conventional art can be obtained.