A display device includes a display panel which displays an image, the display panel including a display signal line and a pad electrode which extends from the display signal line, a flexible film from which a display signal is provided to the pad electrode of the display panel, the flexible film including a base film attached to a side surface of the display panel and including a front surface facing away from the side surface of the display panel, and a wiring electrode disposed on the front surface of the base film and, an adhesion member configured to attach the flexible film to the side surface of the display panel, and a connection electrode directly bonded to the pad electrode of the display panel and the wiring electrode of the flexible film to electrically connect the display signal line of the display panel to the wiring electrode.