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. 29, 2020
Filed:
Mar. 14, 2019
Applicant:
Epistar Corporation, Hsinchu, TW;
Inventors:
Chao-Kai Chang, Hsinchu, TW;
Chen-Yu Wang, Hsinchu, TW;
Chang-Hseih Wu, Hsinchu, TW;
Jai-Tai Kuo, Hsinchu, TW;
Assignee:
EPISTAR CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H05B 39/04 (2006.01); H05B 41/36 (2006.01); H05B 45/37 (2020.01); H05B 45/10 (2020.01);
U.S. Cl.
CPC ...
H05B 45/37 (2020.01); H05B 45/10 (2020.01);
Abstract
A light-emitting device has a stabilizing-current circuit, a current source having a high electron mobility transistor, and a light source electrically connected to the stabilizing-current circuit and the current source.