Patent ID: 8872325

Claim:
A semiconductor device comprising: a substrate; a semiconductor chip mounted on the substrate; an encapsulating body encapsulating the semiconductor chip on the substrate, the encapsulating body including a top surface and a side surface, the side surface of the encapsulating body being substantially aligned with a side surface of the substrate; and a plurality of heat sink plates embedded in the encapsulating body, each of the heat sink plates including an upper surface and a lower surface opposite to the upper surface, each of the upper surfaces being exposed from the top surface of the encapsulating body, the heat sink plates being spaced from each other, each of the heat sink plates being spaced from the semiconductor chip by the encapsulating body, and the encapsulating body being in contact with an entire area of each of the lower surfaces of the heat sink plates, the plurality of heat sink plate being electrically isolated from the semiconductor chip, wherein the encapsulating body comprises an insulating resin, and wherein at least one of the heat sink plates includes an end part that is terminated with the side surface of the encapsulating body without covering the side surface of the encapsulating body by the end part.