Patent ID: 8049681

Claim:
A plasma display device, comprising: discharge cells at crossing regions of scan electrodes, sustain electrodes, and address electrodes; and a scan driver comprising: a selection circuit for selectively supplying voltages between a first node and a second node to the scan electrodes; a capacitor coupled between the first node and the second node; a first waveform generator coupled to a base power source for supplying a base power source voltage, the first waveform generator being configured to alternatively supply to the second node a rapidly falling waveform that falls rapidly to the base power source voltage and a falling ramp waveform that falls with a slope to the base power source voltage; a second waveform generator coupled to a sustain power source for supplying a sustain power source voltage, the second waveform generator being configured to supply to the first node a rapidly increasing waveform that increases rapidly to the sustain power source voltage and a rising ramp waveform that rises with a slope to the sustain power source voltage; an energy recovery circuit for supplying sustain pulses to the scan electrodes; and a scan pulse supplier coupled between the first node and a scan power source, wherein each of the first waveform generator and the second waveform generator comprises: a first transistor having a drain electrode, a gate electrode, and a source electrode; a first resistor and a first diode coupled at a common node between a first input terminal and the gate electrode; a second resistor coupled between the gate electrode and a second input terminal; and a first capacitor coupled between the drain electrode and the common node between the first resistor and the first diode.