Patent ID: 8101868

Claim:
A multilayered printed circuit board comprising: a semiconductor device; a double-sided metal clad laminate forming a first resin insulating layer, a conductor circuit on a first surface of the first resin insulating layer, and a conductor circuit and a metal layer on a second surface of the first resin insulating layer, the first resin insulating layer accommodating the semiconductor device; a second resin insulating layer provided on the first surface of the first resin insulating layer; a conductor circuit provided on the second resin insulating layer; and a plurality of via holes electrically connecting the semiconductor device to the conductor circuit formed on the second resin insulating layer, wherein the second surface of the first resin insulating layer is on an opposite side of the first surface of the first resin insulating layer, the first resin insulating layer has a recess extending from the first surface of the first resin insulating layer to the metal layer on the second surface of the first resin insulating layer, the semiconductor device is accommodated in the recess in the first resin insulating layer, the metal layer on the second surface of the first resin insulating layer has a portion supporting the semiconductor device in the recess, and the metal layer has an exposed portion which has a thickness smaller than a thickness of a non-exposed portion of the metal layer.