US Patent 11334123 Foldable display device

A foldable display device according to an exemplary embodiment includes a first body and a second body, and a hinge unit which is connected between the first body and the second body. The hinge unit includes a first joint which includes a first recess, a second joint which faces the first joint, a third joint disposed at one side of the first joint, a first leaf spring disposed in the first recess, and a first fastener fixed to the third joint through the first leaf spring and the first joint.