Abstract: To provide a protrusion drop structure and others in which when a load applied to an operating button in a back direction is smaller than a predetermined load, the bending of a printed circuit board is made sufficiently small so as not to give a feeling of strangeness when a user depresses the operating button, and when a load applied to the operating button in the back direction reaches the predetermined load, a projecting height of the operating button from a surface of a casing is reduced to less than or equal to a predetermined height.

Abstract: A display device includes: circuit board 6 provided inside a display panel; flat cable 10 attached to connector 11 provided on the board 6; outlet section 10A which is provided in a position on the rotational axis side of the display panel at substantially the same height as that of the board 6, of which the corner of the open edge part is formed by a radius of curvature of a predetermined value or more, and which draws the cable 10 attached to the connector 11 to the outside of the panel; and a draw path section of flat part 4b and contact part 13, of which the corner coming into contact with the cable 10 attached to the connector 11 is formed by a radius of curvature of a predetermined value or more, and which leads the cable 10 to the section 10A without bending.