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:
Jul. 18, 2023
Filed:
May. 03, 2021
Epistar Corporation, Hsinchu, TW;
Hsin-Ying Wang, Hsinchu, TW;
Chih-Hao Chen, Hsinchu, TW;
Chien-Chih Liao, Hsinchu, TW;
Chao-Hsing Chen, Hsinchu, TW;
Wu-Tsung Lo, Hsinchu, TW;
Tsun-Kai Ko, Hsinchu, TW;
Chen Ou, Hsinchu, TW;
EPISTAR CORPORATION, Hsinchu, TW;
Abstract
A light-emitting device comprises a substrate comprising a sidewall, a first top surface, and a second top surface, wherein the second top surface is closer to the sidewall of the substrate than the first top surface to the sidewall of the substrate; a semiconductor stack formed on the substrate comprising a first semiconductor layer, an active layer, and a second semiconductor layer; a dicing street surrounding the semiconductor stack, and exposing the first top surface and the second top surface of the substrate; a protective layer covering the semiconductor stack; a reflective layer comprising a Distributed Bragg Reflector structure covering the protective layer; and a cap layer covering the reflective layer, wherein the second top surface of the substrate is not covered by the protective layer, the reflective layer, and the cap layer.