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:
Jan. 07, 2014
Filed:
Oct. 21, 2011
Kang-yi Liu, Hsin-Chu, TW;
Chao-chieh Chen, Hsin-Chu, TW;
Chia-ming Wu, Hsin-Chu, TW;
Chao-kai Huang, Hsin-Chu, TW;
Kang-Yi Liu, Hsin-Chu, TW;
Chao-Chieh Chen, Hsin-Chu, TW;
Chia-Ming Wu, Hsin-Chu, TW;
Chao-Kai Huang, Hsin-Chu, TW;
AU Optronics Corp., Hsinchu, TW;
Abstract
A power management and control module adapted for a liquid crystal display device includes a boost-type DC/DC topology circuit, a LED dimming control circuit and a multiplexer. The boost-type DC/DC topology circuit has a voltage output terminal electrically connected with a logic high power supply terminal of a gate driving circuit and a power supply terminal of a LED backlight source. The LED dimming control circuit is electrically connected with the LED backlight source for dimming operation. A first and second data input terminals of the multiplexer are electrically connected to the voltage output terminal through a first and second feedback networks respectively. The LED backlight source is electrically connected in the second feedback network. A data output terminal of the multiplexer is electrically connected to the boost-type DC/DC topology circuit and alternatively communicated with the first or second data input terminal to provide a feedback input voltage.