Patent ID: 9196202
Filing Date: 2015-11-24
Classification: G09G,H05B

Abstract:
1. A light emitting diode (LED) backlight driving circuit, comprising: a monitor module; a first light cluster; a first boost voltage module driving the first light cluster; a second light cluster; and a second boost voltage module driving the second light cluster; wherein the first boost voltage module comprises a first detection unit that detects an output current of the first boost voltage module, and the second boost voltage module comprises a second detection unit that detects an output current of the second boost voltage module; wherein the monitor module comprises a current comparing unit coupled to the first detection unit and the second detection unit, and an actuator coupled to the current comparing unit; the actuator controls running states of the first boost voltage module and the second boost voltage module, when a difference value of output current between the first detection unit and the second detection unit is more than a reference difference value, the first boost voltage module and the second boost voltage module are turned off.