A display device includes a display panel including a display area and a non-display area, a plurality of driver integrated circuits mounted on the non-display area of the display panel by a COG method, a printed circuit board (PCB) configured to provide a signal to the plurality of driver integrated circuits, and a flexible printed circuit (FPC) configured to transfer the signal from the PCB to the plurality of driver integrated circuits. The FPC has a first end portion and a second end portion opposite to the first end portion. The first end portion is attached on the non-display area of the display panel by a FOG method, and the second end portion is attached on the PCB. A width of the second end portion is different from a width of the first end portion.