Embodiments of a display device for a vehicle and methods for the same can adjust operation velocity and stroke of a monitor by changing simple mechanical configurations of a driving apparatus for the monitor in the display device. The display device for a vehicle can include a monitor in a case for displaying an image on its front surface and a movable unit that can be installed to the case to reciprocally move the monitor. A control lever can be installed between the monitor and the movable unit to be inclined at a predetermined angle and configured to cooperate with the movable unit. Therefore, it is possible to provide an inexpensive display device capable of satisfying a variety of users' needs and design requirements.