Organic light-emitting display device and driving method thereof

An organic light-emitting display device, comprising:

• a plurality of pixels, each comprising:
• an organic light-emitting element;
• a driving transistor configured to drive the organic light-emitting element;
• a control transistor configured to control the driving transistor;
• and
• a sensing transistor;
• a scan driver configured to supply a scan signal, which turns on the control transistor;
• and
• a sensing controller configured to supply a sensing control signal, which turns on the sensing transistor,
• wherein a driving current is generated in a channel of the driving transistor in response to a sensing voltage being supplied via a first terminal of the turned-on control transistor, and
• wherein the scan driver comprises a sensor, which is configured to measure the driving current via the turned-on sensing transistor.

A method of driving an organic light-emitting display device, which comprises a plurality of pixels, each pixel comprising an organic light-emitting element, a driving transistor driving the organic light-emitting element, a control transistor controlling the driving transistor, and a sensing transistor, and a scan driver turning on the control transistor, the driving method comprising:

• applying a sensing voltage to a gate terminal of the driving transistor via the control transistor;
• and
• measuring a driving current, which is generated in a channel of the driving transistor according to the sensing voltage,
• wherein the scan driver comprises a sensor, which measures the driving current, and
• wherein the sensor measures the driving current via the sensing transistor that is turned on.