1. A display apparatus comprising:a first support member and a second support member arranged in a first direction;
a plurality of joint units arranged in the first direction and extending in a second direction crossing the first direction, wherein the joint units are arranged between the first and second support members so as to be connected to the first and second support members and are coupled to be rotatable with respect to each other;
a display module on the first and second support members and having flexibility;
a third support member under the first support member;
a fourth support member under the second support member;
a hinge member respectively providing a first rotation axis and a second rotation axis, which extend in the second direction, to one side of the third support member and one side of the fourth support member facing each other; and
a plurality of sliding units connected to bottoms of the first and second support members and disposed under the third and fourth support members.