Patent ID: 7005747

Claim:
A semiconductor device having an additional functional element, comprising: a semiconductor element, on at least one face of which first, second, third and fourth electrodes are arranged, wherein: the first electrodes are a plurality of electrodes for signal use, arranged in an outer peripheral region on the one face of the semiconductor element, and the second, third and fourth electrodes are arranged in a central region on the one face of the semiconductor element and the third and fourth electrodes provide electric power and grounding, respectively; a wiring board, having first, second, third and fourth connection pads on a mounting face on which the semiconductor element is mounted; a connector electrically connecting the first electrode with the first connection pad so that a small gap is formed between the one face of the semiconductor element and the mounting face of the wiring board when the one face of the semiconductor element is facing the mounting face of the wiring board; and an extremely thin passive element having a specific additional function arranged in the gap formed between the central region of the semiconductor element and the wiring board, wherein: the extremely thin passive element is connected with the second electrode on the one face of the semiconductor element and also is connected with the second connection pad on the mounting face of the wiring board so that a specific electric function can be exhibited; and the third and fourth electrodes are electrically connected with the third and fourth connection pads on the wiring board, respectively, through a plurality of conductive vias penetrating from one face of the extremely thin passive element to the other face thereof.