Nam-Sung Jung

The current injection method for AC plasma display panel (PDP) sustainer

A new concept of energy recovery for a plasma display panel (PDP) is proposed. Different from conventional LC resonant sustaining drivers, the current built up before inverting the polarity of the panel electrodes is utilized to change the panel polarity together with energy previously charged in panel capacitance. This operation provides zero-voltage switching of switches and reduction of electromagnetic interference by rejecting the surge current when the sustain switches are turned on. The buildup current helps to reduce the transition time of the panel polarity and may produce more stable light waveforms. This method is suitable for a PDP sustaining driver requiring stable light emission characteristic while it maintains low circuit loss like the series-resonant-type energy recovery circuit which is known to be a very effective method.

43.1: A New 42-in. AC PDP Using MAoD II Driving Scheme

We present a new prototype 42″PDP using Samsung SDIs MAoD II driving scheme (Multiple Addressing with Overlapping Display period) suited for a high-resolution PDP. We used the commercial driver ICs to implement the entire parts of driving system and achieved the luminance of 600 cd/m2 with a single scan addressing method with the advantage of space charge priming. It also adopted 14 sub-fields in order to reduce the dynamic false contour.