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. 28, 2015
Filed:
Apr. 07, 2013
Applicant:
Shenzhen China Star Optoelectronics Technology Co., Ltd., Shenzhen, CN;
Inventor:
Anle Hu, Shenzhen, CN;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H05B 33/08 (2006.01); G09G 3/34 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0815 (2013.01); G09G 3/3406 (2013.01);
Abstract
A light emitting diode (LED) backlight driving circuit of the present disclosure includes a constant current driver chip, a power module, an LED lightbar coupled to the power module, a dimming module coupled to the LED lightbar, and a low-pass filter. The constant current driver chip comprises a multiplier, and the constant current driver chip generates a gate signal and a dimming signal that are sent to an input end of the multiplier. An output end of the multiplier is coupled to the power module, and is coupled to the dimming module through the low-pass filter.