Patent ID: 7868560

Claim:
An inverter driving circuit for a liquid crystal display backlight, the circuit comprising: a controller supplying a first driving signal of a square wave; a level shifter boosting up and shifting the first driving signal of the controller into a second driving signal; a first delay circuit comprising a first resistor having one end connected to an output terminal of the first driving signal and a first switch connected between another end of the first resistor and a ground and turned on when the first driving signal is at a low level, the first delay circuit delaying a rising section of the first driving signal to provide the first driving signal; a second delay circuit comprising a second resistor having one end connected to an output terminal of the second driving signal of the level shifter and a second switch connected between another end of the second resistor and a power supply and turned on when the second driving signal is at a high level, the second delay circuit delaying a falling section of the second driving signal to provide the second driving signal; and a power switching circuit comprising a third switch switching on/off in response to the first driving signal of the first delay circuit and a fourth switch switching on/off differentially from the third switch in response to the second driving signal of the second delay circuit, the third and fourth switches connected in series between the power supply and the ground.