A display apparatus includes light-emitting elements each of which is
arranged for a pixel circuit and emits light at a luminance corresponding
to a driving current. To a signal line through the pixel circuit, is
supplied a gray level designation current having a current value larger
than that of the driving current during a selection period to store a
luminance gray level in the pixel circuit. A first voltage is outputted
to the pixel circuit so that the gray level designation current is
supplied to the signal line through the pixel circuit during the
selection period, and a second voltage is outputted to the pixel circuit
during a nonselection period, thereby modulating a current output from
the pixel circuit on the basis of the luminance gray level stored in the
pixel circuit to supply the driving current to the pixel circuit.