Patent ID: 8089477

Claim:
A display device, comprising: a luminescence element including a first electrode and a second electrode; a first power line electrically connected to the first electrode; a second power line electrically connected to the second electrode; a capacitor for holding a capacitor voltage, the capacitor including a third electrode and a fourth electrode; a driver provided between the first electrode and the first power line for passing a signal current between the first power line and the second power line, the signal current corresponding to the capacitor voltage held by the capacitor; a data line electrically connected to one of the third electrode and the fourth electrode for supplying a signal voltage to one of the third electrode and the fourth electrode; a first switch provided between the data line and the one of the third electrode and the fourth electrode for causing the capacitor to hold the capacitor voltage, the capacitor voltage corresponding to the signal voltage; a voltage generation circuit electrically connected to the data line for supplying the signal voltage to the data line and supplying a pre-charge voltage to the data line; a current generation circuit electrically connected to the data line for supplying an inspection current to the luminescence element; a voltage detection circuit electrically connected to the data line for detecting a luminescence voltage of the luminescence element; a second switch electrically connected to the first electrode and the data line; and a controller configured to: turn off the first switch to turn off the driver; turn on the second switch; control the voltage generation circuit to supply the pre-charge voltage to the data line; control the current generation circuit to supply the inspection current to the first electrode of the luminescence element plural times through the data line and the second switch; control the voltage detection circuit to detect, the plural times through the data line and the second switch, voltage values of the first electrode supplied with the inspection current; and control the voltage generation circuit to supply the data line with an updated voltage that is higher than the pre-charge voltage when a difference in the voltage values of the first electrode detected the plural times is at least a predetermined value.