A laminating device includes a first jig on which a first member is seated, a second jig facing the first jig, and a second member between the first jig and the second jig. The second jig includes a pad part having a top surface on which the second member is seated, the pad part having elasticity, a pad deformation part configured to support a rear surface of the pad part, and a support part to support the pad deformation part. The pad deformation part couples the pad part to the support part, and a portion of the pad deformation part has a recessed plate shape with respect to the pad part to correspond to a position thereof coupled to the support part.