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:
May. 20, 2014
Filed:
Jul. 26, 2011
Applicants:
Jinhwa Chung, Seoul, KR;
Frank Chang, Hsinchu, TW;
Byunghak Ahn, Seoul, KR;
Moonho Choi, Bucheon, KR;
Inventors:
Jinhwa Chung, Seoul, KR;
Frank Chang, Hsinchu, TW;
Byunghak Ahn, Seoul, KR;
Moonho Choi, Bucheon, KR;
Assignee:
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to an LED emitting device and a driving method thereof including at least two LED channels. If a power source voltage supplied to an LED emitting device reaches a predetermined threshold voltage, the power source voltage is maintained as a threshold voltage during an overvoltage regulation period.