Simulated results of plasma discharge in AC plasma display panel with asymmetric electrode

摘要

The cost of the driving circuit could be reduced in the AC type plasma display if one of the two electrodes on upper plate was grounded and the driving circuits were used at only the other electrodes. However, when this new driving waveforms were applied to the conventional panel structure, it had been found that the misfiring discharge occurred during the sustain period even though the address signal was not applied. Since the misfiring discharge during the sustain period occurred between the scan electrode at the upper plate and the address electrode at the lower plate, it is possible to prevent the misfiring discharge by applying the additional voltage to the address electrode at the time of applying the positive sustain voltage. On the other hand, since the application of the address voltage during the sustain period causes the power loss of the drive circuit and the shortening of the lifetime in the circuit component, a panel having the asymmetric electrode structure in which the width of the scan electrode on the upper plate is narrower than other electrodes has been proposed. The reason for only reducing the width of the scan electrode on the upper plate is to prevent the misfiring discharge area with the facing address electrode on the lower plate. As a result, it could be confirmed that the misfiring discharge was prevented by the asymmetric electrode structure using the discharge and wall charge simulations.