Display device and method of driving display device

A display device, comprising:

• a display panel including a plurality of pixel rows;
• a power supply configured to provide a power voltage to the display panel;
• an overcurrent protector configured to shutdown the power supply when at least one of the pixel rows is burnt, the overcurrent protector including:
• a sensing controller configured to sense a first current of at least one first pixel row of the display panel in a first frame period, and configured to sense a second current of the first pixel row in a second frame period after the first frame period when the first current is greater than or equal to a first threshold value;
• a burnt determiner configured to determine whether the first pixel row is burnt, and configured to provide a shutdown signal to the power supply when the first pixel row is burnt;
• a frame counter configured to generate a frame period number based on input image data;
• and
• a look-up table configured to store a pixel row number for a pixel row to be sensed corresponding to the frame period number,
• wherein the sensing controller is configured to sense a current of the pixel row based on the pixel row number, and
• wherein the burnt determiner is configured to compare the current with a threshold value, and update the pixel row number of the look-up table when the current is greater than or equal to the threshold value;
• and
• a scan driver configured to provide a scan signal to the display panel,
• wherein the sensing controller is configured to generate a scan start signal provided to the scan driver based on the pixel row number.

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

• sensing a first current of at least one first pixel row of a display panel in a first frame period;
• sensing a second current of the first pixel row in a second frame period after the first frame period when the first current is greater than or equal to a first threshold value;
• determining whether the first pixel row is burnt;
• stopping a supply of a power voltage to the display panel when the first pixel row is burnt;
• sensing a third current of at least one second pixel row of the display panel adjacent to the first pixel row in a third frame period after the second frame period when the second current is greater than or equal to the first threshold value, and
• wherein determining whether the first pixel row is burnt includes determining that the first pixel row is burnt when the third current is greater than a second threshold value.