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. 17, 2012
Filed:
Sep. 23, 2010
Hisayoshi Kuramochi, Kanagawa, JP;
Tomonori Hino, Tokyo, JP;
Tatsuhiro Hirata, Kanagawa, JP;
Yuta Yoshida, Miyagi, JP;
Hisayoshi Kuramochi, Kanagawa, JP;
Tomonori Hino, Tokyo, JP;
Tatsuhiro Hirata, Kanagawa, JP;
Yuta Yoshida, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention provides a semiconductor laser realizing reduced possibility that a wiring layer disposed in the air is broken even under severe environment of a large temperature difference. A trench is provided between adjacent ridges, and a wiring layer electrically connecting an upper electrode and a pad electrode is disposed in the air at least above the trench. The wiring layer in a portion above the trench has a flat shape or a concave shape which dents toward the trench. With the configuration, accumulation of strains in the wiring layer when the wiring layer repeats expansion and shrink under severe environment of a large temperature difference is suppressed.