1. A display apparatus comprising:a housing having a pillar shape;
a plurality of monitors, each of which includes a front surface and a back surface through which an image is displayed and side surfaces connecting the front surface and the back surface; and
a driving unit received in the housing, the driving unit providing driving signals to the plurality of monitors,
wherein one side surface of the side surfaces of each of the plurality of monitors is coupled to the housing, and
wherein a thickness of each of the plurality of monitors decreases as a distance from the housing increases.