Method for driving plasma display panel
View Patent ↗Disclosed is a method for driving a plasma display panel in which a plurality of first electrodes and second electrodes are arranged parallel to each other, a plurality of third electrodes are arranged to cross the first and second electrodes, and discharge cells defined with areas in which the electrodes cross mutually are arranged in the form of a matrix. According to the driving method, a reset period is a period during which the distribution of wall charges in the plurality of discharge cells is uniformed. An addressing period is a period during which wall charges are produced in the discharge cells according to display data. A sustain discharge period is a period during which sustain discharge is induced in the discharge cells in which wall charges are produced during the addressing period. The driving method in accordance with the present invention comprises a step of applying a first pulse in which an applied voltage varies with time so as to induce first discharge in the lines defined by the first and second electrodes, and a step of applying a second pulse in which an applied voltage varies with time so as to induce second discharge as erase discharge in the lines defined by the first and second electrodes. These steps are carried out during the reset period.
1. A method for driving a plasma display panel in which a plurality of first and second electrodes are arranged adjacently each other, a plurality of third electrodes are arranged to cross the first and second electrodes, the plasma display panel having a reset period, an address period, and a sustain discharge period, the method comprising:
in said reset period, applying to the second electrodes a first ramp waveform voltage, whose applied potential gradually increases with time to a first predetermined potential, and applying to the first electrodes a first direct current voltage;
in said reset period, decreasing the potential of the second electrodes from the first predetermined potential to a second predetermined potential;
and thereafter, in said reset period, applying to the second electrodes a second ramp waveform voltage, whose applied potential gradually decreases with time to a third predetermined potential having a negative potential, and applying to the first electrodes a second direct current voltage which is higher than the first direct current voltage.
2. A method for driving a plasma display panel according to claim 1 , wherein
said second predetermined potential is equal to a potential at initiating the application of the first ramp waveform voltage.
3. A method for driving a plasma display panel according to the claim 1 , wherein
said second predetermined potential is equal to a ground potential.