Patent ID: 7514877
Filing Date: 2009-04-07
Classification: H03F

Abstract:
1. A display panel driving circuit comprising; an input part for amplifying an input on-off signal so as to generate a first on-off voltage signal; a voltage signal generation part for generating a second on-off voltage signal whose voltage is varied in response to variations in voltage of said first on-off voltage signal; and an output part including a first output transistor having a first conductive type and a second output transistor having a second conductive type, said first output transistor and said second output transistor being push-pull connected for generating a push-pull output voltage as a driving voltage so as to drive a display panel, conductivities of said first output transistor and said second output transistor being controlled by said first on-off voltage signal and said second on-off voltage signal, respectively, wherein said display panel driving circuit further comprises a controlling part for controlling said voltage signal generation part so that a difference between on and off voltages of said second on-off voltage signal is not smaller than a predetermined voltage.