Patent ID: 7352341
Filing Date: 2008-04-01
Classification: G09G

Abstract:
1. A plasma display device comprising: a plasma display panel having respective discharge cells between a respective sustain electrode, scan electrode, and address electrode; and a scan and sustain driving circuit for applying a driving voltage to the sustain electrode and to the scan electrode during a reset period, an address period, and a sustain period, and an address driving circuit for applying an address driving voltage to the address electrode during the reset period, the address period, and the sustain period, wherein during the reset period, the scan and sustain driving circuit gradually decreases a voltage of the scan electrode to a negative voltage, wherein during the address period, the address driving circuit applies a second voltage to the address electrode of a discharge cell to be selected when the address electrode of discharge cells which are not selected is established to receive a first voltage, wherein during the sustain period, the scan and sustain driving circuit alternately applies a sustain pulse to the sustain electrode and to the scan electrode and the address driving circuit maintains a potential of the address electrode at a third voltage for a predetermined time, wherein during the address period, the scan and sustain driving circuit applies a fourth voltage to the scan electrode of the discharge cell to be selected, wherein during the reset period, a fifth voltage is applied to the sustain electrode when the voltage of the scan electrode is at the negative voltage, wherein the difference between the second voltage and the fourth voltage is greater than a sixth voltage, and wherein the sixth voltage is a voltage substantially equal to a voltage difference between the scan electrode and the sustain electrode for sustain discharging in the sustain period.