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:
Oct. 17, 2006
Filed:
Jul. 15, 2003
Applicant:
Daisuke Hanaoka, Soraku-Gun, JP;
Inventor:
Daisuke Hanaoka, Soraku-Gun, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 5/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A nitride semiconductor laser device chip has a nitride semiconductor stacked-layered structure including an n-type layer, an active layer and a p-type layer stacked successively on a main surface of a nitride semiconductor substrate. A ridge stripe structure is formed in a portion of the p-type layer. The chip has a length Lof more than 500 μm in a longitudinal direction of the stripe structure and a length Lof more than 200 μm in a width direction of the stripe structure, and L/Lis more than 2.5.