A display device includes a display unit having a front surface for display, a rear surface formed with a vertical row of spaced-apart positioning hole units, and a bottom side. A supporting unit includes a first supporting rod that is connected pivotally to the rear surface of the display unit, that is disposed adjacent to the bottom side, and that is adapted to abut against a supporting surface, and a second supporting rod connected pivotally to the first supporting rod and having a free end formed with a positioning stub that engages a selected one of the positioning hole units in the rear surface of the display unit so that an acute angle is formed between the first and second supporting rods, thereby supporting the display unit on the supporting surface.