AC PDP高阻维持驱动方法

High Impedance Sustain Driving Technique in AC Plasma Display Panel

针对AC PDP传统维持驱动方法存在零电压状态,造成两次维持放电之间壁电荷损失的问题。本文提出了一种AC PDP高阻维持驱动方法,在该方法中,采用高阻状态替换了传统维持驱动方法中的零电压状态。从而去掉了两次维持放电中间的放电通路,使得壁电荷在两次维持放电之间不会损失。实验结果表明,采用该方法,可以增大AC PDP维持电压余裕度,降低维持电压,提高维持放电的稳定性。

A novel technique has been successfully developed to realize the sustain driving in high impedance state for the alternating current plasma display panel （AC PDP）. Three distinctive states： the positive voltage state, the high impedance states and the negative state, in one sustain cycle can be identified for the voltage across the X and Y elec- trodes in a typical AC PDP. The high impedance state lies between the alternating positive and negative voltage states. In the technique, the current is interrupted during the polarity change of the applied voltage by using the high impedance state, and the wall charge loss in the interval of the adjacent gas discharges can be avoided. As a result, the stability of the sustain discharge in an AC DPD can be considerably improved. The experimental results show that the newly-developed significantly decreases the minimum sustain voltage, and increases the sustain voltage margin.