In a display device arranging anode wires and cathode wires in a matrix shape,
disposing light emitting elements at the intersections, scanning and driving the
cathodes at specific time intervals, and driving the anode of a desired light emitting
element in synchronism therewith, thereby selectively emitting the light emitting
element, the display controller includes a setting unit for setting the discharge
time for discharging the accumulated charge of the light emitting elements before
light emitting of the light emitting elements, and operates and controls the anode
controller and cathode controller for discharging the accumulated charge of the
light emitting elements within the set discharge time, and also operates and controls
the anode controller and cathode controller for emitting the light emitting elements
after discharge control of the accumulated charge. In the display device having
such configuration, supposing the luminance of the light emitting element when
emitting light in no-charge or almost no-charge accumulated state to be Le, and
the luminance by actual light emission to be Lp, they are in the relation of Lp0.9Le,
and further supposing the discharge time to satisfy this relation to be Tx, the
discharge time Rt of actual discharge is determined to satisfy the relation of TxRt.
