A portable terminal is capable of large screen display and includes an apparatus for driving the same. The portable terminal includes a first display panel unit for displaying a first image, a second display panel unit for displaying a second image, a first and a second trajectory discs being positioned opposite each other at one side of the first display panel unit and formed with a plurality of trajectory grooves at one side thereof, and a folding slide door unit combined between the first display panel unit and the second display panel unit. The folding slide door unit is formed with guide protrusions respectively so as to be slidably inserted into the trajectory grooves of the first and the second trajectory discs at both lateral sides thereof, and includes a plurality of slide doors so as to be slidably folded along the trajectory grooves.