Patent ID: 6281635
Filing Date: 2001-08-28
Classification: G09G

Abstract:
A separate voltage driving method for a plasma display panel in which a writing pulse, a sustaining pulse and an erasure scanning pulse are separately applied to the panel including a plurality of first and second electrodes covered with a dielectric material, and address electrodes crossing the first and second electrodes to form cells so as to drive the panel, wherein at least one of sub-fields in a frame for a picture display comprises:a writing discharge interval for separately generating positive and negative sustaining pulses and positive and negative writing pulses having a different desired level and width at the first and second electrodes, and for superposing the separated positive and negative sustaining pulses with the positive writing pulse to make a writing discharge of the entire cells;an address interval for separately applying the positive sustaining pulse and the negative sustaining pulse after the writing discharge to sustain a discharge of the entire cells, and for applying a reference voltage to any one electrode of the first and second electrodes while applying a negative erasure scanning pulse having a phase contrary to the address pulse of the address electrode to the other electrode thereof, thereby selectively erasing the writing discharge for the entire cells; anda sustaining discharge interval for separately applying the positive and negative sustaining pulses to the first and second electrodes to sustain the writing discharge for the cells except for the erased cells in the entire cells.