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. 10, 2015
Filed:
May. 13, 2015
AU Optronics Corp., Hsin-Chu, TW;
Chun-Hsien Lin, Hsin-Chu, TW;
Chin-Shun Chen, Hsin-Chu, TW;
AU OPTRONICS CORP., Hsin-Chu, TW;
Abstract
A light emitting diode (LED) string driving method applicable to drive a driving circuit is provided. The driving circuit comprises a plurality of LED strings, a power supply unit electrically coupled to the LED strings, a comparison unit configured to receive an input voltage, a control unit electrically coupled to the comparison unit, and a switch unit electrically coupled to the control unit, the power supply unit and the LED strings. The driving method comprises configuring the comparison unit to output a first control signal to the control unit through comparing the input voltage to the predetermined voltage, configuring the control unit to output a second control signal to the switch unit according to the first control signal, and configuring the switch unit to form various electrical loops and configuring the LED strings to corporately form either a parallel loop or a series loop via respective electrical loops.