Charge-controlled driving circuit for plasma display panel

Details Charge-controlled driving circuit for plasma display panel Charge-controlled driving circuit for plasma display panel

2006-04-25

2006-04-25

Wong, Don (Department: 2821)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C345S060000

Reexamination Certificate

active

07034468

ABSTRACT:
An energy recovery driving circuit is presented with an improved design which the power efficiency is increased by limiting the current during the sustain period of the plasma display panel (PDP). The circuit to be disclosed comprises a storage capacitor; charging device for providing a path of charge-flow when turned on, the charging means being connected to the storage capacitor; a resonance inductor that is connected to the charging device; an intermediate capacitor, connected to the resonance inductor to accomplish a LC resonance with the inductor, wherein the intermediate capacitor is charged up to at least a sustain voltage as a result of the LC resonance. The circuit further comprises switching device, connected between the intermediate capacitor and the panel capacitance, which turns on after the intermediate capacitor is charged to at least the sustain voltage so that the charge stored in the intermediate capacitor is transferred to the panel capacitance and the sustain discharge is fired.

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patent: 6538627 (2003-03-01), Whang et al.
patent: 2003/0090440 (2003-05-01), Marcotte

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