Patent ID: 8289350

Claim:
A display panel device, comprising: a luminescence element including a first luminescence electrode and a second luminescence electrode; a first capacitor including a first capacitor electrode and a second capacitor electrode that holds a capacitor voltage; a driver including a gate electrode, a drain electrode, and a source electrode that drives the luminescence element to produce a luminescence by allowing a drain current corresponding to the capacitor voltage to flow through the luminescence element, the gate electrode being connected to the first capacitor electrode, the source electrode being connected to the first luminescence electrode and the second capacitor electrode; a first power line that determines a potential of the drain electrode of the driver; a second power line electrically connected to the second luminescence electrode; a data line that supplies a signal voltage to the first capacitor; a first switch switchably interconnecting the data line and the first capacitor electrode; a second switch switchably interconnecting the first power line and the drain electrode of the driver; and a controller that controls the first switch and the second switch, wherein the controller is configured to: turn ON the second switch to interconnect the first power line and the drain electrode of the driver, and, when the second switch is in an ON state, turn ON the first switch to interconnect the data line and the first capacitor electrode to supply the signal voltage to the first capacitor and flow a current between the source electrode of the driver and the second capacitor electrode; and turn OFF the second switch after an elapse of a predetermined time period after the signal voltage is supplied to the first capacitor to cause non-conduction between the first power line and the drain electrode of the driver to stop the flow of the current between the source electrode of the driver and the second capacitor electrode, whereby a charge accumulated in the first capacitor is discharged when the current flows between the source electrode of the driver and the second capacitor electrode during the predetermined time period.