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:
Nov. 14, 2006
Filed:
Mar. 25, 2005
Applicants:
Shigetaka Tomiya, Tokyo, JP;
Tomonori Hino, Kanagawa, JP;
Inventors:
Shigetaka Tomiya, Tokyo, JP;
Tomonori Hino, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/06 (2006.01); H01L 23/48 (2006.01); H01L 23/52 (2006.01); H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is a nitride compound semiconductor laser, in which a cleaved end face is flat, and a breakdown of a laser end face induced during an operation can be suppressed, which consequently enables a life to be prolonged. In the nitride compound semiconductor laser, a stress concentration suppression layer is formed between an active layer and a cap layer.