Patent ID: 11087704

Abstract:
A liquid crystal panel driving circuit is provided. The circuit includes a pulse width modulation integrated circuit, including an input terminal, a first resistor, a second resistor, a comparator, a light-emitting diode, a latch, a RC circuit and a power supply voltage. Wherein the input terminal is connected to a ground terminal through the first resistor and the second resistor which are serially connected, a positive input terminal of the comparator is connected to a reference voltage, and a negative input terminal of the comparator is connected between the first resistor and the second resistor, an anode of the light-emitting diode is connected to an output terminal of the comparator, and a cathode of the light-emitting diode is connected to the latch, and an input terminal and an output terminal of the RC circuit are respectively connected to the power supply voltage and the latch.