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, 2021
Filed:
Nov. 04, 2019
Xiamen San'an Optoelectronics Co., Ltd., Xiamen, CN;
Chao Liu, Tianjin, CN;
Zhendong Ning, Tianjin, CN;
Ling-Fei Wang, Tianjin, CN;
Jun-Zhao Zhang, Tianjin, CN;
Weihuan Li, Tianjin, CN;
Wen-Hao Gao, Tianjin, CN;
Chaoyu Wu, Xiamen, CN;
Duxiang Wang, Tianjin, CN;
Xiamen San'an Optoelectronics Co., Ltd., Fujian, CN;
Abstract
A light emitting device includes a light emitting structure and a distributed Bragg reflector (DBR) structure disposed thereon. The light emitting structure includes an n-type confinement layer, an active layer disposed on the n-type confinement layer, and a p-type confinement layer disposed on the active layer opposite to the n-type confinement layer. The n-type and p-type confinement layers are disposed proximal and distal to the DBR structure, respectively. The DBR structure includes first to NDBR units. The first and NDBR units are disposed proximal and distal to the light emitting structure, respectively. Each of the first to NDBR units has a center reflection wavelength defined by λ+(z−1)λ.