US Patent 8018715 Electronic device

An electronic device includes a display screen and a slide mechanism. The display screen includes first and second display panels, and a housing for receiving the second display panel. The slide mechanism includes two slide rails connected to the housing, and a slide frame connected slidably to the two slide rails and coupled to the second display panel. One of the slide rails has first and second positioning recesses. The slide frame has rollers connected to the slide rails. The slide frame can bring the second display panel to move between an initial position where the second display panel is on a rear face of the first display panel and a retaining unit is retained in the first positioning recess, and an open position where the second display panel is exposed from one side of the housing and the retaining unit is retained in the second positioning recess.