Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Reexamination Certificate
2006-09-19
2006-09-19
Tran, Thuy V. (Department: 2821)
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
C345S067000
Reexamination Certificate
active
07109662
ABSTRACT:
A method of driving a PDP including alternately-arranged X and Y electrodes and A electrodes crossing the X and Y electrodes provides a recurring cycle of a resetting period, an addressing period, and a sustaining period. The method includes applying a ramp waveform in the resetting period. Discharge starting threshold voltages between the X and Y electrodes and between the A and Y electrodes are denoted by VtXYand VtAY, respectively. Voltages applied between the X and Y electrodes and between the A and Y electrodes at the trailing edge of the ramp waveform are denoted by VXYand VAY, respectively. An offset voltage of the voltage applied between the A and Y electrodes at the end of the sustaining period is denoted by Vaoff. In such a case, the voltage of a driving waveform for each electrode is set so as to satisfy the relational expression “2 VtAY−VtXY>2VAY−VXY−2Vaoff”.
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A Minh Dieu
Hitachi , Ltd.
Staas & Halsey , LLP
Tran Thuy V.
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