Patent ID: 7821795

Claim:
A multilayered substrate comprising: a first circuit board having an upper surface and a lower surface, the upper surface of the first circuit board having a first wiring layer provided thereon, the lower surface of the first circuit board having a second wiring layer provided thereon; a second circuit board having an upper surface and a lower surface, the upper surface of the second circuit board having a third wiring layer provided thereon, the lower surface of the second circuit board having a fourth wiring layer provided thereon; a solid electrolytic capacitor having an insulative oxide film layer, an electrolytic layer, and a conductor layer sequentially formed on one surface of a foil-like metal substrate and an electrode layer formed on the other surface of the foil-like metal substrate, the foil-like metal substrate being made of aluminum, the electrode layer being made of plated Cu or plated Ni; and a first conductive substance passing through the first circuit board, the second circuit board, the foil-like metal substrate, and the electrode layer, the first conductive substance being connected to the foil-like metal substrate and the electrode layer; wherein the solid electrolytic capacitor is disposed to be held between the first circuit board and the second circuit board; wherein the second wiring layer includes a grounding layer connected to the conductor layer; and wherein the third wiring layer includes a power layer connected to the first conductive substance.