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. 16, 2012
Filed:
Nov. 24, 2010
Masahiko Moteki, Kamakura, JP;
Yusuke Yokobayashi, Yokohama, JP;
Masahiko Moteki, Kamakura, JP;
Yusuke Yokobayashi, Yokohama, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
In an optical semiconductor device including a first semiconductor layer of a first conductivity type, an active layer provided on the first semiconductor layer, a second semiconductor layer of a second conductivity type provided on the active layer, an insulating layer provided on a part of the second semiconductor layer, an uneven semiconductor layer of the second conductivity type provided on another part of the second semiconductor layer, and an electrode layer provided on the insulating layer and the uneven semiconductor layer, a density of carriers of the second conductivity type being larger at a tip portion of the uneven semiconductor layer than at a bottom portion of the uneven semiconductor layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile