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:
Mar. 29, 1994
Filed:
May. 22, 1992
Applicant:
Inventors:
Tamayo Hiroki, Zama, JP;
Hidetoshi Nojiri, Hadano, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01L / ;
U.S. Cl.
CPC ...
25022711 ; 257187 ; 257290 ; 257459 ;
Abstract
A light absorbing layer is formed in a photodetector that receives and detects light guided therein. Carriers are generated in the light absorbing layer in response to the guided light. Unwanted carriers likely to be generated in regions other than the light absorbing layer when light is guided into the photodetector are swept out by a carrier sweeping arrangement to improve the time response and light-current characteristics of the photodetector.