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:
Apr. 17, 2001
Filed:
Dec. 07, 1998
Applicant:
Inventors:
Yoshiki Kuhara, Osaka, JP;
Yasuhiro Iguchi, Osaka, JP;
Tadashi Saito, Osaka, JP;
Hitoshi Terauchi, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 3/1072 ; H01L 3/1109 ; H01L 3/10328 ; H01L 3/10336 ;
U.S. Cl.
CPC ...
H01L 3/1072 ; H01L 3/1109 ; H01L 3/10328 ; H01L 3/10336 ;
Abstract
A half-transmittance photodiode usable as a photodetector in receivers for “ping-pong transmission” is improved in temperature characteristic, so that a half-transmittance photodiode usable at low temperatures is available. A p-n junction is formed in a buffer layer, not in an absorption layer.