b to the electrodes 352 b 353 b and 354 b provided on the power supply terminal cells 452 b 453 b and 454 b of the ic device 400 whereby the power supply voltage is supplied to the inside of the ic device 400 next the power supply voltage supplied to the electrodes 352 b 353 b and 354 b provided on the power supply terminal cells 452 b 453 b and 454 b of the ic device 400 is supplied to the power supply terminal cells 452 a 453 a and 454 a provided with the power supply terminal cell 451 interposed between themselves and the electrodes 352 b 353 b and 354 b through the metal lines 552 553 and 554 respectively then the power supply voltage supplied to the power supply terminal cells 452 a 453 a and 454 a is supplied to the electrodes 152 a 153 a and 154 a disposed on the mounting board 100 via the electrodes 352 a 353 a and 354 a formed on the power supply terminal cells 452 a 453 a and 454 a respectively next the power supply voltage supplied to the electrodes 152 a 153 a and 154 a is supplied.