Back to results
US 2017/0150572 A1Published application
Led backlight driving circuit
AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorHua Zhang
Life of this patent
Estimating the term…
Abstract
An LED backlight driving circuit is disclosed. The present disclosure relates to the technical field of display, whereby the technical problem of the incorrect detection of the short circuit detection module when the open circuit malfunction occurs to one LED backlight unit and the output voltage of the LED backlight driving circuit rises can be solved.
Claims10
An LED backlight driving circuit used for driving an LED backlight circuit, the LED backlight circuit comprising at least one LED backlight unit,
- wherein the LED backlight driving circuit comprises an open circuit detection module that is used for detecting an open circuit malfunction of the LED backlight unit, a short circuit detection module that is used for detecting a short circuit malfunction of the LED backlight unit, and a regulation module;
- and
- wherein the regulation module is configured to turn off the short circuit detection module when the open circuit malfunction occurs to the LED backlight unit and an output voltage of a voltage output end of the LED backlight driving circuit rises, and to turn on the short circuit detection module when the LED backlight unit to which the open circuit malfunction occurs is turned off the by the LED backlight driving circuit and the output voltage of the voltage output end of the LED backlight driving circuit declines.
Dependencies are inferred from the claim text.