Integral imaging type stereoscopic display device and method for displaying image

PURPOSE: An integrated image type three-dimensional display device and a method thereof are provided to change a narrow viewing angle into a wide viewing angle by varying a lens area location of a lens array. CONSTITUTION: A pickup unit generates the total three-dimensional image of a display target object. A lens array(200) is located between a display panel(100) and a viewer. A tracking unit(300) tracks a location of a viewer. A control unit(500) controls a lens location of the lens array and an element image projected to the display panel according to a location of the viewer.