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. 21, 2017
Filed:
Jul. 24, 2015
Epistar Corporation, Hsinchu, TW;
Shao-Ping Lu, Hsinchu, TW;
Yi-Ming Chen, Hsinchu, TW;
Yu-Ren Peng, Hsinchu, TW;
Chun-Yu Lin, Hsinchu, TW;
Chun-Fu Tsai, Hsinchu, TW;
Tzu-Chieh Hsu, Hsinchu, TW;
EPISTAR CORPORATION, Hsinchu, TW;
Abstract
A light-emitting device comprises a carrier; and a first semiconductor element comprising a first semiconductor structure and a second semiconductor structure, wherein the second semiconductor structure is closer to the carrier than the first semiconductor structure is to the carrier, the first semiconductor structure comprises a first MQW structure configured to emit a first light having a first dominant wavelength during normal operation, and the second semiconductor structure comprises a second MQW structure configured not to emit light during normal operation.