Patent ID: 8305303

Claim:
An organic light emitting diode display, comprising: a data line; a gate line that crosses the data line to receive a scan pulse; a high potential driving voltage source configured to generate a high potential driving voltage; a low potential driving voltage source configured to generate a low potential driving voltage; a light emitting element configured to emit light due to a current flowing between the high potential driving voltage source and the low potential driving voltage source; a drive element connected between the high potential driving voltage source and the light emitting element and configured to control a current flowing in the light emitting element, depending on a voltage between a gate electrode and a source electrode of the drive element; and a driving current stabilization circuit configured to apply a first voltage to the gate electrode of the drive element to turn on the drive element and to sink a reference current through the drive element to set a source voltage of the drive element at a sensing voltage and to modify the voltage between the gate and source electrodes of the drive element to scale a current to be applied to the light emitting element from the reference current, wherein the drive current stabilization circuit sets the source voltage of the drive element at a sensing voltage during a first period and then modifies the voltage between the gate and source electrodes of the drive element during a second period, such that the light emitting element is turned off during the first and second periods and turned on during a third period following the second period, wherein the first period is a first half period of the scan pulse maintained in a high logic voltage state, wherein the second period is a second half period of the scan pulse maintained in a high logic voltage state, and wherein the third period is a period during which the scan pulse is maintained in a low logic voltage state.