Patent ID: 8570248
Filing Date: 2013-10-29
Classification: G09G

Abstract:
1. A plasma display device that drives a plasma display panel including a plurality of discharge cells at intersections of a scan electrode and a sustain electrode with a plurality of data electrodes by a sub-field method in which one field period includes a plurality of sub-fields, comprising: a scan electrode driving circuit that drives said scan electrode; a sustain electrode driving circuit that drives said sustain electrode; and a data electrode driving circuit that drives said data electrodes, wherein at least one sub-field of said plurality of sub-fields includes a first setup period where wall charges of said plurality of discharge cells are adjusted so that write discharges can be performed, said scan electrode driving circuit applies a ramp voltage that changes from a first potential to a second potential, to said scan electrode for setup discharges in said first setup period, said sustain electrode driving circuit applies a voltage that changes from a third potential to a fourth potential, to said sustain electrode before a time point where a potential of said scan electrode starts changing to said first potential so that a potential difference between said scan electrode and said sustain electrode is decreased, and said data electrode driving circuit applies to each of the data electrodes a voltage that changes from a fifth potential to a sixth potential before the time point where the potential of said scan electrode starts changing to said first potential so that a potential difference between said sustain electrode and each of the data electrodes is increased in synchronization with a change in a voltage of said sustain electrode, causes the voltage of each of the data electrodes to change from said sixth potential to said fifth potential before the time point where the potential of said scan electrode starts changing to said first potential, and subsequently causes the voltage of each of the data electrodes to return to said sixth potential after the time point where the potential of said scan electrode starts changing to said first potential.