BACKLIGHT DRIVING CIRCUIT, BACKLIGHT DRIVING METHOD, AND LIQUID CRYSTAL DISPLAY

摘要

A backlight driving circuit comprises a constant-voltage IC, having a voltage feedback pin and used for outputting a constant voltage, wherein the voltage feedback pin is connected with a negative end of an LED string light; and a detecting resistor, wherein one end of the detecting resistor is connected with the negative end of the LED string light while the other end of the detecting resistor is grounded. Also provided are a backlight driving method and a liquid crystal display comprising the backlight driving circuit.