Patent ID: 8068069
Filing Date: 2011-11-29
Classification: G09G

Abstract:
1. A method of driving a plasma display panel that displays an image, comprising: providing a plurality of subfields in a field period, wherein each subfield includes: an initialization period during which a gently falling gradient waveform voltage is applied to a scan electrode; a writing period during which a scan pulse voltage is applied to the scan electrode to generate writing discharge in a discharge cell including a display electrode pair including the scan electrode and a sustain electrode; and a sustain period during which a sustain pulse voltage is alternately applied, to the display electrode pair, a number of times corresponding to a luminance weight to generate a sustain discharge in the discharge cell in which the writing discharge is generated during the writing period, and wherein the plasma display panel is driven so that a lowest voltage of the gradient waveform voltage in the initialization period in a subfield other than a subfield with a largest luminance weight is lower than a lowest voltage of the gradient waveform voltage in the initialization period in the subfield with the largest luminance weight, wherein the initialization period of a subfield with a smallest luminance weight is an all-cell initializing subfield in which all discharge cells are made to generate initializing discharge, and wherein the initialization period of the subfield with the largest luminance weight is a selectively initializing subfield in which an initializing discharge is generated selectively in the discharge cell in which the sustain discharge has been generated in an immediately preceding subfield.