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:
Nov. 26, 2024
Filed:
Jul. 18, 2024
X-signal Integrated Co., Ltd., Beijing, CN;
X-SIGNAL INTEGRATED CO., LTD., Beijing, CN;
Abstract
An LED backlight driving circuit based on low-potential-end switch control and a backlight driving method are provided. The LED backlight driving circuit includes a plurality of LED strings, a channel control switch device, a constant current module, a channel switching control module, a signal control unit, and an SPI interface unit. Each of the LED strings has a high-potential-end directly connected to an LED driving voltage Vand a low-potential-end connected to one channel control switch device and one constant current module, and a plurality of channel control switch devices in each group of LED strings are connected to one channel switching control module; and the channel switching control module is used to control the on-state duty cycle of the LED strings in the group.