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:
Jun. 05, 2012
Filed:
Apr. 16, 2009
Ke-horng Chen, Taipei County, TW;
Chun-yu Hsieh, Taichung, TW;
Chia-lin Liu, Tai-Chung Hsien, TW;
Chi-neng MO, Taoyuan County, TW;
Hun-wei Chen, Taoyuan County, TW;
Ming-tsung Ho, Taipei Hsien, TW;
Ke-Horng Chen, Taipei County, TW;
Chun-Yu Hsieh, Taichung, TW;
Chia-Lin Liu, Tai-Chung Hsien, TW;
Chi-Neng Mo, Taoyuan County, TW;
Hun-Wei Chen, Taoyuan County, TW;
Ming-Tsung Ho, Taipei Hsien, TW;
Chunghwa Picture Tubes, Ltd., Bade, Taoyuan, TW;
Abstract
A backlight module control system includes a plurality of backlight sub-modules, a control signals output unit, a voltage converter and a plurality of current control units. The control signals output circuit is for providing a voltage control signal, a current control signal and a plurality of PWM signals; the voltage converter is coupled to the control signals output circuit and the backlight sub-modules, and is for outputting an output voltage to the backlight sub-modules according to the voltage control signal; the current control units are coupled to the backlight sub-modules, respectively, and each current control unit is for determining a current of its corresponding backlight sub-module according to the current control signal, and each current control unit is further utilized for determining whether its corresponding backlight sub-module is enabled or not according to its corresponding PWM signal. In addition, only one backlight module is enabled at a same time.