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:
Apr. 20, 2021
Filed:
Jun. 03, 2020
Epistar Corporation, Hsinchu, TW;
Chao-Hsing Chen, Hsinchu, TW;
Jia-Kuen Wang, Hsinchu, TW;
Tzu-Yao Tseng, Hsinchu, TW;
Bo-Jiun Hu, Hsinchu, TW;
Tsung-Hsun Chiang, Hsinchu, TW;
Wen-Hung Chuang, Hsinchu, TW;
Kuan-Yi Lee, Hsinchu, TW;
Yu-Ling Lin, Hsinchu, TW;
Chien-Fu Shen, Hsinchu, TW;
Tsun-Kai Ko, Hsinchu, TW;
EPISTAR CORPORATION, Hsinchu, TW;
Abstract
A light-emitting device comprises a semiconductor stack comprising a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first contact layer on the first semiconductor layer; a second contact layer on the second semiconductor layer, wherein the first contact layer and the second contact layer comprise a metal material other than gold (Au) or copper (Cu); a first pad on the semiconductor stack; a second pad on the semiconductor stack.