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. 17, 2017
Filed:
Oct. 24, 2016
Epistar Corporation, Hsinchu, TW;
Hsin-Chih Chiu, Hsinchu, TW;
Shih-I Chen, Hsinchu, TW;
You-Hsien Chang, Hsinchu, TW;
Hao-Min Ku, Hsinchu, TW;
Ching-Yuan Tsai, Hsinchu, TW;
Kuan-Chih Kuo, Hsinchu, TW;
Chih-Hung Hsiao, Hsinchu, TW;
Rong-Ren Lee, Hsinchu, TW;
EPISTAR CORPORATION, Hsinchu, TW;
Abstract
A semiconductor light-emitting device comprises an epitaxial structure for emitting a light and comprises an edge, a first portion and a second portion surrounding the first portion, wherein a concentration of a doping material in the second portion is higher than that of the doping material in the first portion, a main light-extraction surface on the epitaxial structure and comprises a first light-extraction region corresponding to the first portion and a second light-extraction region corresponding to the second portion and an edge, wherein the second portion is between the edge and the first portion.