An electronic device comprising: a transparent substrate constructed of a synthetic resin material; a touch screen display panel comprising a flat display area (A1) and a curved display area (A2) disposed to an edge of the flat display area, disposed to a lower face of the transparent substrate and having first and second faces facing each other; and an input sensing panel disposed to a lower face of the touch screen display panel, the input sensing panel comprising: a digitizer circuit board ; at least one or more conductive patterns constructed on a first face of the digitizer circuit board; and at least one dummy patterns constructed on the first face of the digitizer circuit board, and each disposed between each of the conductive patterns, wherein each of the dummy patterns has substantially the same thickness between the touch screen display panel and the digitizer circuit board as that of each of the conductive patterns , each of the dummy patterns being disposed to be co-planar with each of the conductive patterns , and wherein when the touch screen display panel is viewed from above, a first region having the flat display area (A1) disposed thereon has the conductive patterns and the dummy patterns , and a second region having the curved display area (A2) disposed thereon has the conductive patterns and a space in which no dummy pattern is constructed between the conductive patterns . a transparent substrate constructed of a synthetic resin material; a touch screen display panel comprising a flat display area (A1) and a curved display area (A2) disposed to an edge of the flat display area, disposed to a lower face of the transparent substrate and having first and second faces facing each other; and an input sensing panel disposed to a lower face of the touch screen display panel, the input sensing panel comprising: a digitizer circuit board ; at least one or more conductive patterns constructed on a first face of the digitizer circuit board; and at least one dummy patterns constructed on the first face of the digitizer circuit board, and each disposed between each of the conductive patterns, wherein each of the dummy patterns has substantially the same thickness between the touch screen display panel and the digitizer circuit board as that of each of the conductive patterns , each of the dummy patterns being disposed to be co-planar with each of the conductive patterns , and wherein when the touch screen display panel is viewed from above, a first region having the flat display area (A1) disposed thereon has the conductive patterns and the dummy patterns , and a second region having the curved display area (A2) disposed thereon has the conductive patterns and a space in which no dummy pattern is constructed between the conductive patterns . a digitizer circuit board ; at least one or more conductive patterns constructed on a first face of the digitizer circuit board; and at least one dummy patterns constructed on the first face of the digitizer circuit board, and each disposed between each of the conductive patterns, wherein each of the dummy patterns has substantially the same thickness between the touch screen display panel and the digitizer circuit board as that of each of the conductive patterns , each of the dummy patterns being disposed to be co-planar with each of the conductive patterns , and wherein when the touch screen display panel is viewed from above, a first region having the flat display area (A1) disposed thereon has the conductive patterns and the dummy patterns , and a second region having the curved display area (A2) disposed thereon has the conductive patterns and a space in which no dummy pattern is constructed between the conductive patterns . <EOS>