A display device includes a printed circuit board (PCB), two sides of the PCB extending in first and second directions, respectively, the first and second directions crossing each other, pad group areas being defined in the PCB and arranged along the first direction; and a display panel electrically connected to the PCB through the pad group areas, the PCB including: first pads in each of the pad group areas and arranged along a third direction crossing the first and second directions; and second pads in each of the pad group areas, arranged along the third direction, and spaced apart from the first pads, wherein a portion of the first pads is in the first pad area, an other portion of the first pads and a portion of the second pads are in the second pad area, and an other portion of the second pad is in the third pad area.