A display device includes a display area and a non-display area; pixels disposed in the display area; a pad area including pads, the pad area being disposed in the non-display area; first power lines electrically connected to the pixels in the display area; first fan-out lines extending in a first direction in the non-display area, the first fan-out lines being electrically connected to the pads; and a first power connection line extending in a second direction intersecting the first direction in the non-display area, the first power connection line electrically connecting the first power lines to the first fan-out lines. A width of a central part of the first power connection line in the first direction is wider than a width of an outer part of the first power connection line in the first direction.