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. 27, 2009
Filed:
Oct. 06, 2005
Tsuyoshi Yamamoto, Kawasaki, JP;
Mitsuru Ekawa, Kawasaki, JP;
Tsuyoshi Yamamoto, Kawasaki, JP;
Mitsuru Ekawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In order to prevent As/P replacement at the boundary face of a re-grown semiconductor layer and avoid a crystalline defect caused by the replacement, there is provided an optical semiconductor device comprising: a semiconductor substrate; a striped stacking body including a first semiconductor layer, an active layer, and a second semiconductor layer; and a burying layer burying the striped stacking body striped stacking body, wherein surfaces in contact with a side face and a bottom face of the burying layer are made of a compound semiconductor that contains arsenic (As) alone as a group V element, and a portion other than the surface includes a group V element other than arsenic.