Patent ID: 8803440
Filing Date: 2014-08-12
Classification: G09G,H05B,Y02B

Abstract:
1. A driving circuit for driving a light emitting diode (LED) backlight, comprising: a power supply module; a first resistor; and a current regulation module; wherein a controllable switch and a voltage dividing resistor module are successively connected in series between an output end of the power supply module and a grounding end of the LED backlight driving circuit, and a power management chip is coupled with a control end of the controllable switch; wherein one end of the first resistor is connected between the controllable switch and the voltage dividing resistor module, and another end of the first resistor is connected with a first reference voltage, and the first reference voltage is constant; wherein an output current of the current regulation module is regulable, and an output end of the current regulation module is coupled between the first resistor and the first reference voltage.