In a display apparatus having organic EL devices to display images in
units of pixels, each pixel comprises a first transistor to drive the
relevant device; a current supply circuit for supplying, in a first mode,
a current of a magnitude based on the value of the pixel displayed by the
device; a second transistor whose control electrode is connected to the
control electrode of the first transistor to thereby constitute a current
mirror circuit, wherein the second transistor receives, in the first
mode, the current from the current supply circuit; a capacitor connected
to the control electrode of the second transistor and holding, in the
first mode, the voltage generated in the control electrode of the second
transistor when the current from the current supply circuit has been
received; and a switch for connecting, in a second mode, the device to
the first transistor in a state where the voltage generated in the
control electrode of the second transistor and held in the capacitor is
supplied to the control electrode of the first transistor. In this
device, high-quality image display can be achieved at lower cost with a
simplified structure.