Patent ID: 7898298
Filing Date: 2011-03-01
Classification: G09G,H05B,Y02B

Abstract:
1. An inverter driver integrated circuit (IC) comprising: a control signal generator for generating a first control signal and a second control signal by use of a pulse width modulation oscillator signal; a comparator for comparing a half-wave rectified signal of a lamp feedback signal fed back from a lamp with a preset reference signal to output a lamp state signal; a first sensor for receiving the lamp state signal and the second control signal to output a first sensing signal; and a second sensor for receiving the first sensing signal and the first control signal to output a second sensing signal; wherein the control signal generator comprises: a first flip-flop for receiving the pulse width modulation oscillator signal as a clock signal; a second flip-flop for receiving the pulse width modulation oscillator signal as a clock signal, and an output signal of the first flip-flop; a NOT gate for feeding back an output signal of the second flip-flop as an input of the first flip-flop; a first AND gate performing an AND operation on the output signal of the first flip-flop and an inverted signal of the output signal of the second flip-flop to output a first control signal; and a second AND gate performing an AND operation on the output signal of the first flip-flop and the output signal of the second flip-flop to output a second control signal.