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:
Apr. 30, 2013
Filed:
Apr. 19, 2010
Ming Gao, Shenzhen, CN;
Ming Gao, Shenzhen, CN;
Innocom Technology (Shenzhen) Co., Ltd., Shenzhen, CN;
Chimei Innolux Corporation, Miaoli County, TW;
Abstract
A backlight control circuit includes a logic unit, a drive unit, a decoder, a current setting unit, a current stabilizer, a pulse width modulated generator, a plurality of light sources, and a control unit. The control unit controls the brightness of each light source according to the pulse width modulated signals from the pulse width modulated generator. The logic unit sends an enable signal to the control unit. The drive unit sends a first control signal to the decoder. According to a decoded signal from the decoder, the current setting unit sends a second control signal and an output voltage to the current stabilizer, the current stabilizer generates a steady current. According to the second control signal, the control unit selectively provides the steady current to the corresponding light source.