A display device for a gaming device which includes concentric rotating displays, wherein an outer one of the displays is also operable to translate with respect to an inner one of the displays. The protection layer includes, from bottom to top, a first layer for providing a first stress against the substrate structure, a second layer for providing a second stress against the substrate structure, and a third layer for providing a third stress against the substrate structure. A pushing link interconnects the rear and forward linkages so that the front rail is inverted to a position adjacent the center rail, and the center rail is shifted rearward as the rear four bar linkage contracts. A method of using the ADD is also presented that includes a step of the ADD being formed in a mold in a single molding operation. An existent upper cover is used as a battery cover; therefore, the battery cover does not need not to be molded additionally and the cost is lowered.