Patent ID: 6456264
Filing Date: 2002-09-24
Classification: G09G

Abstract:
A method for driving a plasma display panel (PDP) with an automatic power control function, the PDP having discharge sustaining electrodes including pairs of scanning lines and common lines, and address electrodes arranged orthogonally to the discharge sustaining electrodes, the discharge sustaining and address electrodes being driven by an address-while-display (AWD) driving method in which addressing and sustaining discharges for expressing gray scale levels by sub-fields, each sub-field consisting of an erase period, an address period, and a sustained discharge period, are simultaneously performed at the scanning lines, not in a time-division manner, to display a video signal of each frame on the PDP, the method comprising:before applying erase pulses at timing points during the sustained discharge periods, determining application timing points of the erase pulses by obtaining an invalidation ratio of discharge sustain pulses applied to the respective sub-fields by detecting power consumed at a power source stage for driving the PDP when luminance is at a maximum; and applying the erase pulses for invalidating some discharge sustain pulses applied during the sustained discharge periods corresponding to respective sub-fields so as not to cause a sustained discharge, at timing points during the sustained discharge periods of the respective sub-fields.