There are provided a design sheet (5) attached to the surface of an upper electrode film (1) of a touch panel (4) such that the design sheet is protruded at its periphery from the touch panel (4) and a touch-panel-unit casing (6) which is integrally molded with the design sheet (5) such that the casing is covered at its surface with the design sheet (5) and surrounds the side surfaces of the touch panel (4).