Display device and method of driving the same

A display device comprising:

• a display panel including a sub-pixel connected to a data line and a reference line;
• a driving circuit configured to supply a data voltage to the display panel through the data line;
• and
• a sensing circuit including a sampling circuit for sensing the display panel through the reference line, wherein:
• the sampling circuit includes a sampling capacitor configured to continuously maintain charge sharing with a sensing capacitor connected to the reference line;
• and
• the sensing circuit acquires a sensing voltage from the sampling capacitor and determines presence or absence of a defect based on the sensing voltage.

A method of driving a display device, the method comprising:

• charging a data line of a sub-pixel included in a display panel with a data voltage;
• charging a reference line of the sub-pixel included in the display panel with a reference voltage;
• and
• turning on a sampling switch included in a sampling circuit of a sensing circuit to acquire a sensing voltage through the reference voltage,
• wherein the sampling switch has a turn-on state within an image display period of the display panel.