Patent ID: 8669653

Claim:
A semiconductor device comprising: a wiring board which includes a first face and a second face opposite to the first face and in which a through part and a through hole penetrating the wiring board from the first face to the second face are provided, the through hole being disposed in a peripheral of the through part; a through electrode which includes a connection portion which is provided in the through hole, a first pad which is connected to one end of the connection portion, and which extends along the first face of the wiring board, the first pad having a first connection face at a distal side opposite to a proximal side connected to the connection portion, and a second pad which is connected to the other end of the connection portion, and which extends along the second face of the wiring board, the second pad having a second connection face at a distal side opposite to a proximal side connected to the connection portion; an electronic component which is housed in the through part and which includes an electrode pad forming face on which an electrode pad is formed and a rear face opposite to the electrode pad forming face, the electrode pad forming face extending beyond the first face of the wiring board; a seal resin which is provided in the through part, on the electrode pad forming face of the electronic component, and on the first and second faces of the wiring board so as to cover side faces of the electrode pad and the first and second pads, and which includes a first plane exposing a connection face of the electrode pad and the first connection face of the first pad and a second plane exposing the rear face of the electronic component and the second connection face of the second pad; and a wiring pattern which is provided on the connection face of the electrode pad, the first connection face of the first pad and the first plane of the seal resin to electrically connect the connection face of the electrode pad with the first connection face of the first pad, wherein the first plane of the seal resin, the connection face of the electrode pad and the first connection face of the first pad are flat and a bottom surface of the wiring pattern is coplanar with the first plane of the seal resin, the connection face of the electrode pad and the first connection face of the first pad throughout an entire horizontal length of the wiring pattern from the connection face of the electrode pad to the first connection face of the first pad, and wherein the second plane of the seal resin, the rear face of the electronic component and the second connection face of the second pad are flat.