Patent ID: 6642912
Filing Date: 2003-11-04
Classification: G09G

Abstract:
A method of driving an ac-discharge PDP;the PDP comprising scan electrodes and sustain electrodes extending in parallel in a first direction and data electrodes extending in a second direction; the scan electrodes, the sustain electrodes, and the data electrodes forming cells arranged regularly for displaying images using discharge-induced emission; the method comprising: (a) a wall-charge adjustment step of storing first wall-charge of a first polarity near the respective scan electrodes and second wall-charge of a second polarity near the respective sustain electrodes, where the second polarity is opposite to the first polarity; the first wall-charge of the first polarity stored near the respective scan electrodes generating an associate electric-field in the cells; the wall-charge adjustment step being performed by common application of at least one of a first wall-charge adjustment voltage pulse to the scan electrodes and a second wall-charge adjustment voltage pulse to the sustain electrodes; and (b) a writing discharge generating step of generating writing discharge in the desired cells; the writing discharge generation step being performed after the wall-charge adjustment step by applying successively a scan voltage pulse to the scan electrodes and applying a data voltage pulse to the data electrodes according to desired image data; the scan voltage pulse and the data voltage pulse generating a main electric-field in the cells; the main electric-field cooperating with the associate electric-field, thereby generating a writing voltage in the cells; and (c) a step of commonly applying a secondary scan voltage pulse to the sustain electrodes in the writing discharge generation step; wherein the secondary scan voltage pulse serves to decrease or eliminate the second wall-charge stored near the respective sustain electrodes in the cells, preventing error discharge.