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:
Feb. 23, 2016
Filed:
Nov. 29, 2013
Applicant:
Epistar Corporation, Hsinchu, TW;
Inventors:
Wu-Tsung Lo, Hsinchu, TW;
Yu-Chih Yang, Hsinchu, TW;
Chien-Ming Wu, Hsinchu, TW;
Kai-Yi Hong, Hsinchu, TW;
Assignee:
EPISTAR CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/10 (2010.01); H01L 33/32 (2010.01); H01L 33/30 (2010.01); H01L 33/46 (2010.01);
U.S. Cl.
CPC ...
H01L 33/10 (2013.01); H01L 33/46 (2013.01); H01L 33/465 (2013.01);
Abstract
A light-emitting device includes: a Distributed Bragg reflector comprising alternate first semiconductor layers and second semiconductor layers, wherein each first semiconductor layer comprises a low-refractive-index part having a depth; and a light-emitting semiconductor stack associated with the Distributed Bragg reflector; wherein the depths of the low-refractive-index parts of the first semiconductor layers are gradually changed in a direction toward the light-emitting semiconductor stack.