HINGE, SHELL STRUCTURE AND FLEXIBLE DISPLAY DEVICE

A housing structure includes a hinge and a second body. The hinge includes a rod having a head and a tail at opposite ends thereof. The head and the tail are respectively disposed on two opposite sides of the rod along a longitudinal direction of the rod. The two plates are respectively pivoted to the rod in a transverse direction of the rod and can be flipped back and forth through the hinge in a deployed state and a folded state. In the unfolded state, the two plates are away from each other, are close to the head of the rod, and have an angle with the tail of the rod respectively. In the folded state, the two plates are close to each other and are separated from the head of the rod. Wherein the two plates and the head define another angle, and the another angle is symmetrical with the angle. Therefore, the housing structure can compensate for the reduced inside length with an increased outside length in the folded state, and thus the flatness of the flexible panel can be maintained.