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. 20, 2015
Filed:
Dec. 28, 2012
Applicant:
Epistar Corporation, Hsinchu, TW;
Inventors:
Assignee:
EPISTAR CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/22 (2010.01); H01L 31/0236 (2006.01); H01L 33/00 (2010.01);
U.S. Cl.
CPC ...
H01L 33/22 (2013.01); H01L 31/02363 (2013.01); H01L 33/0095 (2013.01);
Abstract
A light-emitting device includes: a substrate; a first semiconductor layer disposed on the substrate and having a first surface; a rough structure formed in the first semiconductor layer, the rough structure comprising porous structures formed therein and a portion of the porous structures having openings exposed on the first surface of the first semiconductor layer; and an active layer formed on the first semiconductor layer.