Patent ID: 7176854

Claim:
A plasma display panel (PDP) driver for applying a driving voltage to a panel capacitor formed between first and second electrodes and having first and second ends, the PDP driver comprising: a first voltage source having a positive polarity terminal and a negative polarity terminal for supplying a first voltage; a second voltage source for supplying a second voltage; a first switch coupled between a first end of the panel capacitor and the positive polarity terminal of the first voltage source; a second switch coupled between the positive polarity terminal of the first voltage source and the second voltage source; a third switch coupled between the first end of the panel capacitor and a negative polarity terminal of the first voltage source; and a fourth switch coupled between the negative polarity terminal of the first voltage source and the second voltage source, wherein when the first and fourth switches are turned on, a third voltage is applied to the first end of the panel capacitor, the third voltage being a voltage difference between the first and second voltages, when the second and third switches are turned on, a fourth voltage is applied to the first end of the panel capacitor, the fourth voltage being a voltage difference between a negative value of the first voltage and the second voltage, and wherein the first and fourth switches and the second and third switches are alternately turned on to alternately apply the third and fourth voltages, respectively, to the first end of the panel capacitor.