Disclosed is a mobile terminal, including a body including a first frame and a second frame slidably movably coupled to the first frame in first or second direction, a flexible display unit including a side face portion surrounding one side of the body, and a driver. A rear face of the first frame includes a first rear face exposed to the rear face of the first frame in the second state and a second rear surface that remains overlapping with the second frame in the second state. The driver includes a motor installed in the second frame, a pinion gear configured to rotate upon receiving a rotational force of the motor, and a rack gear fastened to the second rear surface of the first frame and configured to be extended along the first direction and to move linearly in engagement with the pinion gear.