A method for manufacturing a semiconductor device with plural semiconductor chips is provided. The method includes the step of attaching a second semiconductor chip to a first surface of a supporting member in a manner such that a third set of electrodes are wirelessly connected to the supporting member at positions outwardly from an opening of the supporting member. The method also includes the step of mounting a first semiconductor chip to the second semiconductor chip in a manner such that the main surfaces of the first and second semiconductor chips face each other while a first set of electrodes of the first semiconductor chip are wirelessly connected to a second set of electrodes in the opening of the supporting member.