Patent ID: 7301114

Claim:
A movable contact arrangement comprising: a first insulating film, and a first adhesive layer disposed underneath a lower face of said first insulating film; a plurality of first movable contacts shaped like domes and bonded onto said first adhesive layer and bowing downward upon being depressed, said first movable contacts being positioned so as to be spaced apart from each other and arranged in a cross shape in which a row of said first movable contacts intersects with a column of said first movable contacts; a second movable contact formed of a conductive thin metal plate, shaped like a dome, and disposed on an upper face of said first insulating film concentrically with one of said first movable contacts and bowing downward upon being depressed so as to depress said one of said first movable contacts to bow downwardly; a second insulating film, and a second adhesive layer disposed beneath a lower face of said second insulating film, wherein said second movable contact is bonded on said lower face of said second insulating film via said second adhesive layer, and said second insulating film is bonded on said upper face of the first insulating film via said second adhesive layer; and wherein said one of said first movable contacts is positioned at an intersection of said row of said first movable contacts and said column of said first movable contacts so as to be arranged for enter operations wherein said first movable contacts of said row of said first movable contacts include at least a pair of surrounding first movable contacts on opposite sides of said one of said first movable contacts; wherein said surrounding first movable contacts do not have second movable contacts disposed thereabove that, when depressed, bow downwardly and depress said surrounding first movable contacts, respectively.