Modified Ramp Reset Waveform for High Contrast Ratio in AC PDPs

  • Kim, Jae-Sung (School of Electrical Engineering, Seoul National University) ;
  • Yang, Jin-Ho (School of Electrical Engineering, Seoul National University) ;
  • Ha, Chang-Hoon (School of Electrical Engineering, Seoul National University) ;
  • Whang, Ki-Woong (School of Electrical Engineering, Seoul National University)
  • 발행 : 2002.08.21

초록

In general, the background light produced during the reset period deteriorates the dark room contrast ratio in AC PDP. In this paper, we propose a modified ramp reset pulse that can reduce the background light to imperceptible level. In the new reset waveform, the discharges between the scan and sustain electrodes are minimized by applying a positive bias voltage to the sustain electrode and only the weak discharges between the scan and address electrodes occur during the reset period. We adopted a MgO coated phosphor layer to get the same level of voltage margin in the new reset pulse scheme compared to that of the conventional ramp reset pulse one. As a result, the voltage margin is maintained at the same level and the dark room contrast ratio is improved dramatically.

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