An electroluminescent device, in which a layer having a light emitting
region is provided between an anode and a cathode, is driven by applying
a bipolar waveform as a drive waveform per one image display period to
the device. The one image display period is divided into a light emitting
period and a non-light emitting period. The bipolar waveform per one
image display period is set such that a waveform portion (current or
voltage) for generating an electric field reversed to an electric field
caused in the light emitting period is applied in the non-light emitting
period, and that an integral intensity obtained by multiplying a voltage
value by an applied time in the light emitting period is balanced with or
canceled by an integral intensity obtained by multiplying a voltage value
by an applied time in the non-light emitting period. Since the optimized
drive waveform is applied to the electroluminescent device, it is
possible to realize a high reliability and a long-term service life of
the device.