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:
Jul. 25, 2006
Filed:
Jun. 05, 2001
Applicants:
Toru Uchida, Nakakoma, JP;
Chikashi Anayama, Nakakoma, JP;
Inventors:
Toru Uchida, Nakakoma, JP;
Chikashi Anayama, Nakakoma, JP;
Assignee:
Fujitsu Quantum Devices Limited, Yamanashi, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/0304 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor photodetection device includes a photodetection layer formed of an alternate and repetitive stacking of an optical absorption layer accumulating therein a compressive strain and a stress-compensating layer accumulating therein a compensating tensile strain, wherein the optical absorption layer has a thickness larger than a thickness of the stress-compensating layer.