The present invention provides a manufacturing apparatus for display device components and a manufacturing method thereof, which can prevent the protrusion of the adhesive, and prevent no fillings of adhesives and the residues of the unhardened portion of the adhesives in the display region. The manufacturing apparatus includes a laminating portion and an irradiating portion. The laminating portion laminates workpieces with adhesives hardened by irradiation of energy. The workpieces are a pair of workpieces forming the display device, and one of them includes a printed frame that divides the display region. The irradiating portion that irradiates energy by switching from a first irradiation state to a second irradiation state. The first irradiation state is a state in which the energy is irradiated only to the area where the energy is irradiated to the region where the energy is applied to the edge of the workpiece. The second irradiation state is a state in which energy is irradiated onto a region where incident energy is closer to an inner portion than the edge of the adhesive.