Patent ID: 7330180

Claim:
A driving circuit for driving a capacitive load by applying to the capacitive load a voltage that corresponds to an input signal and whose polarity is periodically inverted, the driving circuit comprising: an output circuit for outputting the voltage corresponding to the input signal and applying the voltage corresponding to the input signal to the capacitive load; an open/close circuit for electrically disconnecting the output circuit from the capacitive load for a predetermined time interval in which the polarity of the voltage applied to the capacitive load is inverted; a capacitor having a predetermined capacitance; and a connection switching circuit for connecting the capacitor for a first predetermined period within an OFF period, which is the predetermined time interval during which the output circuit is electrically disconnected from the capacitive load, in parallel to the capacitive load, and connecting the capacitor for a second predetermined period after the first predetermined period within the OFF period in parallel to the capacitive load with an orientation that is opposite to the orientation in the first predetermined period.