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:
Sep. 15, 2020
Filed:
Apr. 26, 2017
Stanley Electric Co., Ltd., Tokyo, JP;
Toshiyuki Obata, Yamaguchi, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
A group-Ill nitride stacked body includes a substrate, an n-type first AlGaN layer expressed by the composition formula AlGaN (0<X≤1), and a second AlGaN layer which is disposed between the substrate and the n-type first AlGaN layer and which is expressed by the composition formula AlGaN (0.5<Y≤1, where Y<X). A group-III nitride light-emitting element comprises an active layer which is disposed on the n-type first AlGaN layer of the group-Ill nitride stacked body and which includes at least one well layer. The well layer of the active layer is an AlGaN layer expressed by the composition formula AlGaN (0<W<1), where the Al composition W is such that W≤Y.