Patent ID: 6111556
Filing Date: 2000-08-29
Classification: G09G

Abstract:
An energy recovery sustain circuit having first, and second energy recovery sustain driving parts for supplying sustain pulses of Vo volt to a load capacitor in an AC plasma display panel, the first, and second energy recovery sustain driving parts comprising:an output terminal for providing sustain pulses capable of charging and discharging an external load capacitor;inductor means connected to the output terminal in series for recovery of the voltage charged in or discharged from the load capacitor;first capacitor means for charging or discharging the voltage recovered by the inductor means;first discharging means for selective discharge of the voltage recovered and charged in the first capacitor means for charging the load capacitor up to a first voltage level;first voltage sustaining means for sustaining a voltage supplied to the load capacitor by the first capacitor means at the first voltage level;second capacitor means for charging or discharging the voltage recovered at the inductor;second discharging means for selective discharge of the voltage recovered and charged in the second capacitor means to charge the load capacitor charged up to the first voltage up to a level of a second voltage, additionally;second voltage sustaining means for sustaining a voltage supplied to the load capacitor by the discharge of the second capacitor at the level of the second voltage;second charging means for being supplied of a voltage recovered by the inductor when the load capacitor charged up to the second voltage is discharged and selective charging of the second capacitor;third voltage sustaining means for sustaining a voltage to the load capacitor at the first voltage when the load capacitor charged up to the second voltage is discharged;first charging means for being supplied of the voltage recovered at the inductor when the load capacitor discharged down to the first voltage level discharges for the second time and selective charging of the first capacitor; andfourth voltage sustaining means for sustaining voltage at 0 volt when the load capacitor held at the first voltage is discharged for the second time.