Patent ID: 8552940

Claim:
A display device, comprising: luminescence pixels arranged in a matrix; data lines for determining luminescence of the luminescence pixels; a data driving circuit that supplies a signal voltage to the data lines; and a bias supplying circuit that supplies a predetermined bias voltage to the data lines, wherein each of the luminescence pixels includes: a driving transistor that converts the signal voltage supplied from a data line included in the data lines into a signal current; a luminescence element that produces a luminescence when the signal current flows; and a switching transistor that switches between conduction and non-conduction between the data line and one of an anode and a cathode of the luminescence element, the display device further comprises: a controller configured to cause a non-conduction state between the data line and the data driving circuit, cause a conduction state between the data line and the bias supplying circuit, and apply the predetermined bias voltage to the one of the anode and the cathode of the luminescence element by switching ON the switching transistor within a period in which the signal current does not flow to the luminescence element, and the predetermined bias voltage is set to a voltage value that restores brightness of the luminescence element affected by brightness deterioration.