A pixel circuit includes a light-emitting element which emits light having
the intensity corresponding to an amount of a driving current; a driving
transistor which supplies the driving current to the light-emitting
element; a storing circuit which writes a data signal instructing the
light-emitting brightness of the light-emitting element during a writing
period of time to store the data signal; and a buffer circuit which
supplies a signal output from the storing unit to the driving transistor.