Patent ID: 8115702

Claim:
A plasma display device comprising: a plasma display panel comprising a plurality of discharge cells corresponding to an electrode; and a panel electrode driver for generating driving signals for the electrode, wherein the panel electrode driver comprises: a falling ramp switch coupled at a first side to the electrode, and coupled at a second side to a low level power source; and a switch controller coupled to the falling ramp switch; wherein the switch controller is adapted to generate a switching pulse to repeatedly turn on and turn off the falling ramp switch during a turn-on period and a turn-off period, respectively, to achieve a falling ramp waveform wherein a voltage of the electrode falls from a first voltage to a second voltage; and wherein the turn-on period of the switching pulse during the falling ramp waveform follows the equations below: T= 4 a×C 2 /( I peak ) 2 I peak ≦I r (I r : Maximum current allowed by the falling ramp switch; a: Correction constant; I peak : Peak current through the falling ramp switch; T: Time of the turn-on period; C: Panel capacitance).