A display device (1; 2; 3), comprising: a base substrate comprising an active area and a non-active area neighboring the active area; a plurality of film attachment pads disposed on the non-active area; a flexible printed circuit film disposed on the plurality of film attachment pads; and an anisotropic conductive film disposed between the plurality of film attachment pads and the flexible printed circuit film, wherein the flexible printed circuit film includes: a film support layer; a first film conductive layer disposed on a first surface of the film support layer; and a second film conductive layer disposed on a second surface of the film support layer opposite the first surface of the film support layer, wherein the second film conductive layer includes: a first film conductive member; a second film conductive member; and a space positioned between the first film conductive member and the second film conductive member, wherein the first film conductive member and the second film conductive member are electrically connected to the first film conductive layer through a first contact hole and a second contact hole, respectively, and wherein a side surface of the base substrate is positioned between two edges of the space in a direction parallel to the first surface of the film support layer, wherein the base substrate comprises a polymer organic material, and wherein the anisotropic conductive film extends beyond or at least overlaps the side surface of the base substrate. a base substrate comprising an active area and a non-active area neighboring the active area; a plurality of film attachment pads disposed on the non-active area; a flexible printed circuit film disposed on the plurality of film attachment pads; and an anisotropic conductive film disposed between the plurality of film attachment pads and the flexible printed circuit film, wherein the flexible printed circuit film includes: a film support layer; a first film conductive layer disposed on a first surface of the film support layer; and a second film conductive layer disposed on a second surface of the film support layer opposite the first surface of the film support layer, wherein the second film conductive layer includes: a first film conductive member; a second film conductive member; and a space positioned between the first film conductive member and the second film conductive member, wherein the first film conductive member and the second film conductive member are electrically connected to the first film conductive layer through a first contact hole and a second contact hole, respectively, and wherein a side surface of the base substrate is positioned between two edges of the space in a direction parallel to the first surface of the film support layer, wherein the base substrate comprises a polymer organic material, and wherein the anisotropic conductive film extends beyond or at least overlaps the side surface of the base substrate. a film support layer; a first film conductive layer disposed on a first surface of the film support layer; and a second film conductive layer disposed on a second surface of the film support layer opposite the first surface of the film support layer, wherein the second film conductive layer includes: a first film conductive member; a second film conductive member; and a space positioned between the first film conductive member and the second film conductive member, wherein the first film conductive member and the second film conductive member are electrically connected to the first film conductive layer through a first contact hole and a second contact hole, respectively, and wherein a side surface of the base substrate is positioned between two edges of the space in a direction parallel to the first surface of the film support layer, wherein the base substrate comprises a polymer organic material, and wherein the anisotropic conductive film extends beyond or at least overlaps the side surface of the base substrate. a first film conductive member; a second film conductive member; and a space positioned between the first film conductive member and the second film conductive member, wherein the first film conductive member and the second film conductive member are electrically connected to the first film conductive layer through a first contact hole and a second contact hole, respectively, and wherein a side surface of the base substrate is positioned between two edges of the space in a direction parallel to the first surface of the film support layer, wherein the base substrate comprises a polymer organic material, and wherein the anisotropic conductive film extends beyond or at least overlaps the side surface of the base substrate.