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:
Dec. 31, 2013
Filed:
Jul. 14, 2010
Katsushi Akita, Itami, JP;
Yohei Enya, Itami, JP;
Takashi Kyono, Itami, JP;
Masahiro Adachi, Osaka, JP;
Shinji Tokuyama, Osaka, JP;
Yusuke Yoshizumi, Itami, JP;
Takamichi Sumitomo, Itami, JP;
Masaki Ueno, Itami, JP;
Katsushi Akita, Itami, JP;
Yohei Enya, Itami, JP;
Takashi Kyono, Itami, JP;
Masahiro Adachi, Osaka, JP;
Shinji Tokuyama, Osaka, JP;
Yusuke Yoshizumi, Itami, JP;
Takamichi Sumitomo, Itami, JP;
Masaki Ueno, Itami, JP;
Sumitomo Electronic Industries, Ltd., Osaka-shi, JP;
Abstract
A group III nitride substrate has a semi-polar primary surface. A first cladding layer has a first conductivity type, and comprises aluminum-containing group III nitride. The first cladding layer is provided on the substrate. An active layer is provided on the first cladding layer. A second cladding layer has a second conductivity type, and comprises aluminum-containing group III nitride. The second cladding layer is provided on the active layer. An optical guiding layer is provided between the first cladding layer and the active layer and/or between the second cladding layer and the active layer. The optical guiding layer comprises a first layer comprising InGaN (0≦x1<1) and a second layer comprising InGaN (x1<x2<1). The second layer is provided between the first layer and the active layer. The total thickness of the first layer and the second layer is greater than 0.1 μm. The wavelength of laser light is in a range of 480 nm to 550 nm.