| Plasma display panel (PDP) technology has achieved many excellent performances and it has been regarded as one of the best candidates for HDTV (high-definition television).However, there are still some problems and difficulties, the high power consumption, high fabrication cost and low luminance efficacy, for example. The birth of shadow Mask Plasma display panel(SMPDP) provides the possibility that some parameters of PDPs, like the resolution and luminance, can be further improved. Certainly, lots of jobs should be done when transfer this technology from lab to mass production. Due to the differences of basic structure of SMPDP and conventional ACC-PDP, their electrical characteristics are also different. In order to fully utilize the advantages of this new structure, we must understand the basic operating principles of SMPDP, improve and optimize the driving scheme for SMPDP.After the analysis and comparison to the available PDP driving schemes for the surface-discharge structure, the driving waveform for SMPDP has been proposed according to its special structure. This driving waveform is based on typical ADS method which is composed with three periods: reset period, address period and sustain period.A ramp reset waveform is proposed to improve both the contrast ratio and the stability for addressing .This waveform has two stages: ramp up stage and ramp down stage. According to the academic analysis and actual experiment, we confirm that this waveform can result in good wall voltage conditions for stable addressing and a good priming effect. Otherwise, we present correlative parameters for reset waveform.Factors which will influence the addressing speed in SMPDP are investigated. According to the actual experiment, we provide the voltage requirements of address waveforms. In order to reduce addressing time more, several addressing schemes are presented.Requests for reliable sustain are studied. We present correlative parameters for sustain waveform in 25 inch SMPDP. |
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