A semiconductor package comprising a base material, an FPC substrate bonded through the intervention of an adhesive or an adhesive sheet on the base material and a semiconductor chip mounted on the FPC substrate, the semiconductor chip being mounted on the FPC substrate by FC bonding, the base material being formed by a resin, the base material having a concave portion or hole, and the semiconductor chip being mounted on the FPC substrate inside the concave portion or hole of the base material.