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:
Nov. 29, 2016
Filed:
Nov. 21, 2014
Epistar Corporation, Hsinchu, TW;
Chih-Chiang Lu, Hsinchu, TW;
Yi-Chieh Lin, Hsinchu, TW;
Wen-Luh Liao, Hsinchu, TW;
Shou-Lung Chen, Hsinchu, TW;
Chien-Fu Huang, Hsinchu, TW;
EPISTAR CORPORATION, Hsinchu, TW;
Abstract
A method for making a light-emitting device comprises the steps of: providing a growth substrate; forming a first light-emitting semiconductor stack on the growth substrate by epitaxial growth, and the first light-emitting semiconductor stack comprises a first active layer; forming a Distributed Bragg reflector on the first light-emitting semiconductor stack by epitaxial growth; forming a second light-emitting semiconductor stack on the Distributed Bragg reflector by epitaxial growth, and the second light-emitting semiconductor stack comprises a second active layer; and wherein the first active layer emits a first radiation of a first dominant wavelength, and the second active layer emits a second radiation of a second dominant wavelength longer than the first dominant wavelength.