A manufacturing apparatus of a display device includes: a first stage including a plurality of cell units, each including: a display unit including a display area, and a pad area; and a protective film unit attached to the display unit, and including a display film portion corresponding to the display area, and a pad film portion corresponding to the pad area; a second stage; and a transfer unit to transfer the cell units to the second stage from the first stage, and to peel off the pad film portion. The transfer unit includes: a body member; a plurality of pins along a first direction on a first surface of the body member; a plurality of suction pads on the first surface of the body member along a second direction; and a reel member on a second surface of the body member to supply a peeling tape to the second surface.