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. 03, 2018
Filed:
Jan. 06, 2016
Shenzhen Skyworth-rgb Electronic Co., Ltd, Shenzhen, CN;
Xiangfeng Hu, Shenzhen, CN;
Chao Zeng, Shenzhen, CN;
SHENZHEN SKYWORTH-RGB ELECTRONIC CO., LTD, Shenzhen, CN;
Abstract
The present invention discloses a television backlight driving device and the driving method thereof, the said television backlight driving device comprises: an AC-DC module and an LED driving module; when a power is on, the said AC-DC module transforms an input supplied AC power into a DC power before supplying to the backlight LED lightstrip; comparing to the existing backlight driving methods, there is no second process of DC-DC needed, saving a system cost of the power, and improving an efficiency of the system; when the LED driving module determines the detection current larger than the preset current but smaller than the first threshold, a constant-current output for LED current is controlled by adjusting the duty ratio; when the detection current is larger than the first threshold or smaller than the preset current, the LED driving module feeds back the detection current to the AC-DC module; the AC-DC module then controls the DC voltage according to the detection current; different methods for adjustment may save a power consumption, as well as achieving an effect of stabling the current output; it owns a simple circuit structure, and a high system reliability.