A flexible display device may include a display panel including a display area and a bending area which extends on one side of the display area and is bent, first and second back plates disposed on a rear surface of the display panel, a thin film transistor and a light emitting element disposed on the display area, a circuit wire disposed on the display area and the bending area, a micro coating layer disposed on the circuit wire of the bending area, and a support member disposed between the first and second back plates and constituted by an adhesive and a cushion tape attached to a part of the rear surface of the adhesive, and a heat dissipation sheet attached to the rear surfaces of the cushion tape and the adhesive.