Light emitting display device and driving method thereof

A light emitting display device, comprising:

• a display panel;
• a scan driver including a shift register configured to supply a scan signal to the display panel;
• a power supply configured to supply a first potential voltage and a second potential voltage to the display panel;
• and
• a switch circuit configured to:
• sense the first potential voltage applied to the display panel;
• and
• feedback the first potential voltage to the power supply,
• wherein the power supply is further configured to:
• compensate for the first potential voltage based on the first potential voltage fed back from the switch circuit;
• and
• output a compensated first potential voltage,
• wherein the switch circuit is electrically connected to the shift register circuit,
• wherein the switch circuit comprises a plurality of switches positioned in a non-display area of the display panel, and
• wherein the plurality of switches are configured to be sequentially turned on in response to scan signals that are sequentially output from the shift register circuit.