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. 14, 2014
Filed:
Dec. 05, 2011
Yusuke Yokobayashi, Tokyo, JP;
Satoshi Tanaka, Tokyo, JP;
Tatsuma Saito, Tokyo, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
A semiconductor light emitting device having an n-electrode and a p-electrode provided on the same surface side of a semiconductor film, wherein current spread in the semiconductor film is promoted, so that the improvements in luminous efficiency and reliability, the emission intensity uniformalization across the surface, and a reduction in the forward voltage, can be achieved. The semiconductor light emitting device includes a semiconductor film including an n-type semiconductor layer, an active layer, and a p-type semiconductor layer; the n-electrode formed on an exposed surface of the n-type semiconductor layer exposed by removing parts of the p-type semiconductor layer, of the active layer, and of the n-type semiconductor layer with accessing from the surface side of the p-type semiconductor layer; and the p-electrode. A current guide portion having conductivity higher than that of the n-type semiconductor layer is provided on or in the n-type semiconductor layer over the p-type electrode.