A display apparatus including: a first display; a second display disposed adjacent to the first display; a hinge rotatably coupling the first display and the second display, the hinge including a first hinge portion at a side of the first display and a second hinge portion rotatably coupled to the first hinge portion and at a side of the second display; a light emitter on the first hinge portion; a light receiver on the second hinge portion; and a controller configured to control the first display and the second display based on an intensity of light received by the light receiver while the light emitter outputs the light.