Sustain driving apparatus and method for plasma display panel

A sustain driving apparatus for a plasma display panel for alternately applying a sustain pulse having a sustain voltage value to a scan electrode and a sustain electrode, said apparatus comprising:

• a voltage source having a half of the voltage required for a sustain driving of the plasma display panel;
• a boosting circuit connected to the voltage source, said circuit boosting a ½ sustain voltage from the voltage source to generate said sustain voltage;
• and
• a sustain capacitor connected to the boosting circuit and charged with said sustain voltage from the boosting circuit to supply a constant sustain voltage to the panel.

A sustain driving apparatus for a plasma display panel, comprising:

• a voltage source having a half of the voltage required for a sustain driving of the plasma display panel;
• an energy recovering circuit connected between the voltage source and the panel, said circuit configuring an LC resonance circuit by a switching to recover a power of the panel, thereby applying said sustain driving voltage to the panel;
• a charge capacitor connected to the voltage source to charge the panel into a voltage higher than said voltage of the voltage source using the charged voltage;
• and
• a separating diode for shutting off a reverse current into the voltage source and for applying said voltage having the ½ value to the energy recovering circuit and the charge capacitor separately.

A sustain driving apparatus for a plasma display panel, comprising:

• a display panel having pixel cells provided at intersections between first and second sustain electrodes for causing a sustain discharge and address electrodes, said pixel cells being arranged in a matrix type;
• a positive voltage source;
• a negative voltage source;
• a first recovering circuit connected between a positive voltage source and the display panel to charge a positive voltage from the positive voltage source into the display panel and recover the charged positive voltage;
• and
• a second recovering circuit connected between the negative voltage source and the first recovering circuit to charge a negative voltage from the negative voltage source into the display panel and recover the charged negative voltage.

A method of driving a plasma display panel having an ½ sustain voltage source, said method comprising the steps of:

• boosting a ½ sustain voltage value of the voltage source to generate a sustain voltage;
• supplying the panel with said boosted sustain voltage;
• charging the boosted sustain voltage into a sustain capacitor;
• and
• supplying said sustain voltage from the sustain capacitor such that, when the boosted sustain voltage is supplied to the panel, said sustain voltage is constantly maintained to permit a stable driving.

A method of driving a plasma display panel, comprising the steps of:

• generating a positive voltage supplied to the plasma display panel;
• generating a negative voltage supplied to the panel;
• charging said positive voltage into the panel and recovering the charged positive voltage;
• and
• charging said negative voltage into the panel and recovering the charged negative voltage.