Plasma display panel driving method
View Patent ↗A method of driving a plasma display panel minimizes occurrence of complementary color ghost images (afterimage). Reset pulses are applied to a plurality of row electrode pairs to trigger a reset discharge in all discharge cells. The reset pulses include a first reset pulse that is applied to one of the row electrodes of each row electrode pair and a second reset pulse that is applied to the other row electrode at the same time that the first reset pulse is applied and has a polarity opposite that of the first reset pulse. The first and second reset pulses have different voltage levels.
1. A method of driving a plasma display panel in accordance with image signals, the plasma display panel including a plurality of row electrode pairs, each of which pairs defines a display line, and a plurality of column electrodes arranged in a perpendicular fashion to the row electrode pairs such that a plurality of discharge cells, which function as display pixels, are formed at respective intersections between the column electrodes and row electrode pairs, with a display period for one field being divided into a plurality of sub-fields,
wherein each sub-field is driven by a pixel data writing operation that applies a scanning pulse to one row electrode of each row electrode pair and applies a pixel data pulse corresponding to the image signal to each column electrode to generate a selecting discharge that sets every discharge cell to either a light emission state or a non-light emission state, and a light emission sustaining operation that applies sustaining pulses to the row electrode pair of every discharge cell to trigger a sustaining discharge in only those discharge cells which are set to the light emission state, so as to cause these discharge cells to repeatedly emit light,
wherein either a plurality of sub-fields or each sub-field is also driven by a reset operation that, prior to the pixel data writing operation, applies reset pulses to the plurality of row electrode pairs to trigger a reset discharge in the discharge cells, and
wherein the reset pulses include a first reset pulse applied to the one row electrode of each row electrode pair and a second reset pulse applied to the other row electrode of each row electrode pair at the same time as the first reset pulse is applied, and the second reset pulse has a polarity opposite that of the first reset pulse,
wherein the voltage value of said first reset pulse is smaller than the voltage value of said second reset pulse.
2. The method of driving a plasma display panel according to claim 1 , wherein the voltage value of the first reset pulse is ½ the voltage value of the second reset pulse.
3. The method of driving a plasma display panel according to claim 1 , wherein the reset operation is performed in a leading sub-field of said one field.