A display device includes a first substrate including a display area and a non-display area, which is on the periphery of the display area, a light-emitting element disposed on the first substrate and in the display area, a display signal line which is disposed on the first substrate and in the display area, extends in a first direction, and transmits a signal to the light-emitting element, a common voltage supply line disposed on the first substrate and in the non-display area, a pad disposed on the first substrate and in the non-display area, and electrically connected to the display signal line, and an indentation pad disposed on the first substrate and in the non-display area, and electrically connected to the common voltage supply line, where the indentation pad is disposed closer than the pad to edges of the first substrate in a second direction, which intersects the first direction.