Display device

A display device comprising:

• a substrate comprising a display area in which emission areas are arranged, and a non-display area around the display area;
• a circuit layer above the substrate, and comprising:
• light-emitting pixel drivers arranged side by side in a first direction and a second direction;
• data lines extending in the second direction and configured to transmit a data signal to the light-emitting pixel drivers;
• and
• a defect inspection circuit unit at the non-display area, and configured to:
• supply inspection signals to the data lines;
• operate in a lighting inspection mode for detecting a normal or abnormal status of a light-emitting element for ones of the emission areas of a same color;
• and
• operate in a short-circuit inspection mode for detecting a short circuit between neighboring data lines among the data lines;
• and
• an element layer above the circuit layer, and comprising light-emitting elements respectively at the emission areas, and respectively electrically connected to the light-emitting pixel drivers.

An electronic device comprising a display device comprising:

• a substrate comprising a display area in which emission areas are arranged, and a non-display area around the display area;
• a circuit layer above the substrate, and comprising:
• light-emitting pixel drivers arranged side by side in a first direction and a second direction;
• data lines extending in the second direction, configured to transmit a data signal to the light-emitting pixel drivers, and comprising a first data line, a second data line, a third data line, and a fourth data line arranged adjacent to each other in the first direction;
• and
• a defect inspection circuit unit at the non-display area, and configured to supply inspection signals to the data lines, and comprising:
• a first inspection transistor electrically connected between the first data line and a first inspection signal supply line configured to transmit a first inspection signal;
• a second inspection transistor electrically connected between the second data line and a second inspection signal supply line configured to transmit a second inspection signal;
• a third inspection transistor electrically connected between the third data line and a third inspection signal supply line configured to transmit a third inspection signal;
• and
• a fourth inspection transistor electrically connected between the fourth data line and the second inspection signal supply line;
• and
• an element layer above the circuit layer, and comprising light-emitting elements respectively at the emission areas and electrically connected to the light-emitting pixel drivers.