Patent ID: 7911421

Claim:
A plasma display apparatus being driven by dividing a sub-field into at least an address period and a sustain period, the apparatus comprising: a timing controlling unit configured to vary a length of the sustain period depending on a discharge pattern of a discharge cell, wherein the discharge pattern of the discharge cell varies in accordance with a number of switching operations of a data voltage applied to an address electrode, wherein the timing controlling unit is further configured to lengthen the length of the sustain period by lengthening a length from an initiation time point of a last sustain pulse to a reset period of a next sub-field, and lengthen the length from the initiation time point of the last sustain pulse to the reset period of the next sub-field by lengthening a ground period of the last sustain pulse in the sustain period, as the number of switching operations of the data voltage is higher, in order to recover the data voltage drop amount during the sustain period, and wherein the data voltage rises during a period between the initiation time point of the last sustain pulse and the reset period of the next sub-field.