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:
Aug. 31, 2010
Filed:
Jan. 14, 2009
Yasuhiko Matsushita, Osaka, JP;
Yasuhiko Matsushita, Osaka, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
Provided are a nitride semiconductor laser chip with a reliability improved by relieving stress due to strain within the nitride semiconductor laser chip, a manufacturing method thereof, and a nitride semiconductor laser device. The nitride semiconductor laser chip comprises: a substrate; and a laminated structure provided on a main surface of the substrate and including a nitride semiconductor layer. In the laminated structure, at least one crack parallel to a resonator end face is formed. By forming a crack within a laser chip, stress due to strain is relieved; therefore, it is possible to obtain a laser chip having a high reliability.