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:
Sep. 23, 2025
Filed:
Aug. 11, 2022
Quanzhou Sanan Semiconductor Technology Co., Ltd., Nanan, CN;
Baojun Shi, Nanan, CN;
Jin Xu, Xiamen, CN;
Shiwei Liu, Xiamen, CN;
Dazhong Chen, Xiamen, CN;
Shuijie Wang, Xiamen, CN;
Ke Liu, Xiamen, CN;
Chung-Ying Chang, Xiamen, CN;
Wen-Chia Huang, Xiamen, CN;
Yu-Tsai Teng, Xiamen, CN;
Abstract
A light-emitting device includes a substrate and an epitaxial unit. The substrate has a first and a second surface. The substrate is formed on the first surface with a plurality of protrusions. The epitaxial unit includes a first semiconductor layer, an active layer, and a second semiconductor layer that are sequentially disposed on the first surface of the substrate. The first surface of the substrate has a first area that is not covered by the epitaxial unit, and a second area this is covered by the epitaxial unit. A height difference (h) between the first area and the second area is no greater than 1 μm. A display apparatus and a lighting apparatus are also disclosed.