Patent ID: 8446399
Filing Date: 2013-05-21
Classification: G09G

Abstract:
1. A driving device that drives a plasma display panel including discharge cells at intersections of a plurality of scan electrodes, a plurality of sustain electrodes and a plurality of data electrodes by a sub-field method in which one field period includes a plurality of sub-fields having respective luminance weights, comprising: a voltage source that generates a driving voltage; and a driving circuit that performs a two-phase driving operation to said plurality of scan electrodes in at least a sub-field having a largest luminance weight of said plurality of sub-fields using the driving voltage generated by said voltage source, wherein said driving circuit applies a first ramp waveform that drops from a first potential to a second potential to a plurality of first scan electrodes of said plurality of scan electrodes and applies a second ramp waveform that drops from a third potential that is higher than said first potential to a fourth potential that is higher than said second potential to a plurality of second scan electrodes of said plurality of scan electrodes in a setup period, and sequentially applies a scan pulse to said plurality of first scan electrodes and sequentially applies a scan pulse to said plurality of second scan electrodes after the scan pulse is applied to said plurality of first scan electrodes in a write period in said two-phase driving operation.