| 摘要 |
A driving device of a plasma display panel is provided to perform low voltage address operations without discharge error by changing the least voltage level of a ramp down pulse according to temperature variation. A driving device of a plasma display panel includes a sustain pulse supply unit(222), a ramp pulse supply unit(224), and a scan voltage supply unit(226). The sustain pulse supply unit applies a sustain voltage to first electrodes. The ramp pulse supply unit applies a ramp-up pulse, which is increased from the sustain voltage with a slope, and a ramp-down pulse, which is decreased from the sustain voltage with a slope, to the first electrodes. The scan voltage supply unit supplies first and second scan voltages to the first electrodes. The ramp pulse supply unit includes first and second transistors(Q21,Q22), a resistor(R21), and a voltage dropping element(D22). The first transistor is connected between a voltage source and a ramp-up pulse outputting node. A source of the second transistor is connected to a second scan voltage inputting terminal. The resistor connected to a drain of the second transistor varies resistance thereof according to temperature. The voltage dropping element is connected between the resistor and a ramp-down pulse outputting node.
|
