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:
Feb. 12, 2008
Filed:
Nov. 03, 2006
Tong Zhou, Shenzhen, CN;
Jin-liang Xiong, Shenzhen, CN;
Jia-hui Tu, Shenzhen, CN;
Hua Xiao, Shenzhen, CN;
Tong Zhou, Shenzhen, CN;
Jin-Liang Xiong, Shenzhen, CN;
Jia-Hui Tu, Shenzhen, CN;
Hua Xiao, Shenzhen, CN;
Innocom Technology (Shenzhen) Co., Ltd., Shenzhen, Guangdong Province, CN;
Innolux Display Corp., Chu-Nan, Miao-Li County, TW;
Abstract
An exemplary backlight control circuit () includes two load circuits (), a pulse width modulation integrated circuit (PWM IC) () having a current sampling pin (), a switching circuit (), a first input circuit () and a second input circuit () including an input resistor. Each load circuit includes a backlight () and an output end (). The first input circuit includes a diode (), a resistor (), a capacitor () and a voltage division resistor (). A negative terminal of the diode is connected to ground via the resistor and the capacitor respectively, and is connected to the switching circuit. A positive terminal of the diode is connected to one of the output end of the load circuits. The other one of the output ends of the load circuits is connected to the current sampling pin via the input resistor.