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:
Nov. 11, 2014
Filed:
Oct. 12, 2011
Huang-ti Lin, Hsin-Chu, TW;
Wen-ti Chang, Hsin-Chu, TW;
Chia-yuan Chang, Hsin-Chu, TW;
Chun-chieh Huang, Hsin-Chu, TW;
Huang-Ti Lin, Hsin-Chu, TW;
Wen-Ti Chang, Hsin-Chu, TW;
Chia-Yuan Chang, Hsin-Chu, TW;
Chun-Chieh Huang, Hsin-Chu, TW;
Au Optronics Corp., Hsinchu, TW;
Abstract
An exemplary current regulating circuit of LED string includes a capacitor, an inductor, a diode, a switch and a detection circuit. First and second terminals of the capacitor respectively are connected to a low voltage and a preset voltage. A first terminal of the inductor is connected to the low voltage. Positive and negative terminals of the diode are respectively connected to a second terminal of the inductor and a high voltage. First and second terminals of the switch are respectively connected to the second terminal of the inductor and the preset voltage. The detection circuit detects the low voltage to thereby switch ON-OFF states of the switch in demand. Moreover, a LED illumination device using the current regulating circuit also is provided.