A display device includes a display panel, a flexible film, and a conductive adhesion member. The display panel includes a first substrate which includes a pad electrode connected to a signal line, a second substrate, and a metal electrode electrically connected to the pad electrode and on a side surface of the display panel. The flexible film includes a line electrode electrically connected to the metal electrode and attached to the side surface of the display panel. The conductive adhesion member includes a connection electrode electrically connecting the metal electrode to the line electrode. The conductive adhesion member attaches the flexible film to the surface of the display panel. The connection electrode includes the solder particles in melted form.