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:
Jan. 05, 1988
Filed:
Feb. 19, 1986
Masanao Yamamoto, Mobara, JP;
Eisuke Inoue, Mobara, JP;
Keiichi Shidara, Tama, JP;
Eikyuu Hiruma, Komae, JP;
Hitachi, Ltd., Tokyo, JP;
Nippon Hoso Kyokai, Tokyo, JP;
Abstract
An image pick-up tube target comprising an N-type conductive film formed on a transparent substrate, and P-type photoconductive film in rectifying contact with the N-type conductive film and comprising a first layer containing As, fluoride and Se, a second layer containing As, Te and Se, a portion of said second layer containing fluoride, a third layer containing As and Se, the composition of the third layer being different along the direction of thickness thereof, a fourth layer containing As and Se, wherein the concentration of As in the second layer varies continuously along the direction of thickness thereof, and in the second layer the minimum As concentration is located on the first layer side of the second layer and the maximum As concentration is located on the third layer side of the second layer.