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:
Oct. 14, 1986
Filed:
May. 20, 1985
Kenkichi Tanioka, Tokyo, JP;
Keiichi Shidara, Tama, JP;
Takao Kuriyama, Sagamihara, JP;
Yukio Takasaki, Kawasaki, JP;
Tadaaki Hirai, Koganei, JP;
Yasuhiko Nonaka, Mobara, JP;
Eisuke Inoue, Mobara, JP;
Nippon Hoso Kyokai, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A structure of a photoconductive film related to a target of an image pickup tube of the photo conductivity type is disclosed. This photoconductive film is formed from mainly Se and Te is added in a central part thereof. Further, As, which is considered to form a deep trap level which captures electrons in Se and GaF.sub.3, etc. which form negative space charges by capturing electrons in Se are added in the region adjacent to the region where Te exists. In addition, a thickness of film in the region where GaF.sub.3, etc. exists is selected to be thinner (not smaller than 20 .ANG. and not larger than 90 .ANG.) than a value which has been adopted so far.