Modified Driving Waveform for Ridged Dielectric Structure Based on VtClosed Curve Analysis in AC PDP

The discharge characteristics of an AC plasma display panel (PDP) with the ridged dielectric structure were investigated. In particular, characteristics such as firing voltage and related wall voltage based on the Vt closed curve measurement were compared in the ridged and conventional dielectric structures. The front plate of the AC PDP with the conventional panel structure is composed of glass, electrodes and dielectric. In the ridged dielectric structure, the middle part of the dielectric layer is eliminated to allow for light to pass through more easily. This structural modification causes the plasma discharge between the two front electrodes to occur at a lower voltage. Meanwhile, as the ridged dielectric structure differs from the conventional dielectric structure, various problems arise if the conventional driving waveform is used. Especially, as the discharge firing voltage characteristics between the scan and sustain electrodes of the ridged dielectric structure is different, it is necessary to m...