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:
Jan. 21, 2025
Filed:
Feb. 22, 2022
Xiamen Sanan Optoelectronics Technology Co., Ltd., Xiamen, CN;
Poyang Chang, Xiamen, CN;
Linrong Cai, Xiamen, CN;
Shao-Hua Huang, Xiamen, CN;
Liqin Zhu, Xiamen, CN;
Shuangliang Liu, Xiamen, CN;
Xiamen Sanan Optoelectronics Technology Co., Ltd., Xiamen, CN;
Abstract
A light-emitting diode (LED) chip includes a substrate and an epitaxial structure. The epitaxial structure includes a first semiconductor layer, an active layer and a second semiconductor layer that are sequentially disposed on the substrate in such order. The second semiconductor layer has a light-emitting surface that is opposite to the active layer and that is formed with a microstructure. The microstructure includes a plurality of first protrusions that are separately disposed on the light-emitting surface, and a plurality of second protrusions that are disposed on the first protrusions and on the light-emitting surface between any two adjacent ones of the first protrusions.