Patent ID: 7138706

Claim:
A semiconductor device comprising: a substrate; a plurality of semiconductor chips mounted on the substrate by stacking one on top of another; and an encapsulation resin layer, wherein, among the plurality of semiconductor chips, a first semiconductor chip as an uppermost semiconductor chip is mounted with a surface thereof on which a circuit is formed facing the substrate, wherein the first semiconductor chip is directly and electrically connected to bumps and a second semiconductor chip provided immediately below the first semiconductor chip is directly and electrically connected to the bumps, and wherein the encapsulation resin layer is formed so that at least a surface of the first semiconductor chip opposite to the surface on which the circuit is formed and a portion adjacent to said opposite surface in each of side surfaces of the first semiconductor chip are exposed to the outside of the encapsulation resin layer and the surface on which the circuit is formed and a remaining portion in each of the side surfaces are covered with the encapsulation resin layer.