Patent ID: 6057815
Filing Date: 2000-05-02
Classification: G09G

Abstract:
A driver circuit for a plasma display panel having striped scanning electrodes and striped column electrodes perpendicular to the striped scanning electrodes, said scanning electrodes being divided into a plurality of scanning electrode blocks, and also having a preliminary discharge period and a writing period for each of said scanning electrode blocks, and a sustaining period common to all of said scanning electrodes, said driver circuit comprising:a data pulse generator for generating data pulses;a plurality of scanning pulse generators associated with said scanning electrode blocks, respectively, for generating scanning pulses;a first switch comprising a pull-up switch for generating sustaining pulses to be applied to the plasma display panel in said sustaining period, said first switch having one end connected to a higher potential side of a sustaining pulse power supply and the opposite end for supplying a current to the plasma display panel;a first group of as many diodes as the number of said scanning electrode blocks, said diodes of the first group having respective anodes connected in common to the opposite end of said first switch and respective cathodes connected respectively to said scanning pulse generators;a second switch comprising a pull-down switch for generating sustaining pulses to be applied to the plasma display panel in said sustaining period, said second switch having one end connected to a lower potential side of the sustaining pulse power supply and the opposite end for drawing a current from the plasma display panel;a second group of as many diodes as the number of said scanning electrode blocks, said diodes of the second group having respective cathodes connected in common to the opposite end of said second switch and respective anodes connected respectively to said scanning pulse generators; andthird switches associated respectively with said scanning electrode blocks for generating pulses other than said sustaining pulses independently with respect to said scanning electrode blocks.