A display device includes: a display module; a first support part and a second support part disposed below the display module, the first and second support parts being arranged in a first direction; a hinge disposed between the first and second support parts below the display module to define biaxial rotation axes extending in a second direction intersecting the first direction; and a plurality of rotation parts coupled to the hinge to rotate about the biaxial rotation axes, the plurality of rotation parts being connected to the first and second support parts, respectively. Each of the rotation parts includes first and second parts that move relative to each other via a lost motion connection upon rotation of the rotation parts.