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:
Jun. 28, 2013
Shenzhen China Star Optoelectronics Technology Co., Ltd, Shenzhen, CN;
Xinhong Chen, Shenzhen, CN;
Other;
Abstract
A light emitting diode (LED) backlight driving circuit includes a power supply, a constant current driving unit that drives LED light bars, a switching unit coupled to the power supply, and M light units that are connected with each other in parallel. Each of the light units comprises at least two LED light bars that are connected with each other in parallel, and an input end of each of the LED light bars is coupled to the switching unit. The constant current driving unit includes a plurality of dimming channels coupled to an output end of the LED light bars, and each of the dimming channels is connected with M LED light bars. The M LED light bars connected with a same dimming channel are arranged in different light units, one LED light bar is coupled to one dimming channel. The power supply is only coupled to one light unit through the switching unit when the LED backlight driving circuit is in operation, and M is a positive integer.