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. 14, 2002
Filed:
Aug. 05, 1999
Nobuyasu Negishi, Tsurugashima, JP;
Takuya Hata, Tsurugashima, JP;
Atsushi Yoshizawa, Tsurugashima, JP;
Hideo Satoh, Tsurugashima, JP;
Takashi Yamada, Tsurugashima, JP;
Takashi Chuman, Tsurugashima, JP;
Shingo Iwasaki, Tsurugashima, JP;
Takamasa Yoshikawa, Tsurugashima, JP;
Hiroshi Ito, Tsurugashima, JP;
Kiyohide Ogasawara, Tsurugashima, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An electron emission device comprises an electron-supply layer made of metal or semiconductor and disposed on an ohmic electrode; an insulator layer formed on the electron-supply layer; and a thin-film metal electrode formed on the insulator layer. The electron-supply layer is essentially composed of elements belonging to group IV and contains an additive of at least one material selected from atomic elements belonging to group III or V.