Capacitive load drive circuit and plasma display apparatus

摘要

A capacitive load circuit and a plasma display apparatus using such a circuit are disclosed which are able to use a sustain transistor having a voltage rating in accordance with a sustain voltage even when a voltage larger than the sustain voltage is applied to a sustain electrode. The circuit comprises a switch (CUSW, CDSW) one end of which is connected to a capacitive load (CL), and when a third voltage, whose voltage difference from a second voltage is larger than the voltage difference between a first voltage and the second voltage, is applied to the capacitive load, a fourth voltage is selectively applied to the other end of the switch.