Patent ID: 7719488

Claim:
A PDP driving circuit comprising: a set-up voltage generating circuit generating and outputting a set-up voltage Vsetup; and a set-up supplier supplying the set-up voltage Vsetup outputted by the set-up voltage generating circuit to a predetermined electrode of the PDP, wherein the set-up voltage generating circuit includes: a charger connected in series between a terminal applied with a sustain voltage Vs and a terminal of a predetermined voltage for charging a voltage corresponding to a difference between the sustain voltage Vs and the predetermined voltage and outputting the set-up voltage Vsetup thus generated to the set-up supplier; and a first switch connected in series between the charger and the terminal of the predetermined voltage for controlling the charge of the charger in response to a predetermined control signal, wherein the charger comprises a device that prevents the charged voltage from being discharged toward the sustain voltage Vs, and the set-up voltage generating circuit further includes a second switch connected to the charger in parallel for controlling in such a manner that a voltage in which the charged voltage and the sustain voltage Vs are added to the set-up voltage Vsetup if the charger is charged and the first switch is turned off.