Patent ID: 8592957

Claim:
A semiconductor device comprising: a wiring board comprising a first surface on which a board-side ground terminal and a board-side power supply terminal are provided; a semiconductor chip arranged so as to face the first surface of the wiring board, where the first surface faces an opposite surface of the semiconductor chip; a shield layer provided at the semiconductor chip so as to cover an outer surface of the semiconductor chip except for the opposite surface; a chip-side power supply terminal which is provided on the opposite surface and is electrically connected to the board-side power supply terminal; a chip-side ground terminal which is provided on the opposite surface and is electrically connected to the board-side ground terminal and the shield layer; and a first capacitively coupled part by which the shield layer and the chip-side power supply terminal are capacitively coupled with each other, and wherein the first capacitively coupled part comprises inter-digital electrodes which are respectively formed at the shield layer and the chip-side power supply terminal, the inter-digital electrodes each having a comb shape, and are separated from and engaged with each other.