Patent ID: 8803304

Claim:
A semiconductor package comprising: a wiring board; a first semiconductor chip mounted on the wiring board; a second semiconductor chip mounted on the first semiconductor chip, wherein a size of the second semiconductor chip is larger than that of the first semiconductor chip when viewed from a thickness direction of the semiconductor package; a base disposed on the wiring board at a position outside an outer periphery of the first semiconductor chip to face a peripheral portion of the second semiconductor chip, the base being projected so as not to contact a surface of the second semiconductor chip; and a thermosetting resin film provided between the wiring board and the second semiconductor chip so as to cover the base and provided between the wiring board and the first semiconductor chip so as to cover the first semiconductor chip, wherein a top surface of the thermosetting resin film which is located outside the outer periphery of the first semiconductor chip is substantially flush with a too surface of the first semiconductor chip and wherein a pripheral portion of the thermosetting resin film at a position outside an outer periphery of the second semiconductor chip is formed in a fillet shape, wherein the base comprises: a plurality of corner bases each of which is disposed on the wiring board to face a corresponding corner portion of the second semiconductor chip; and a plurality of side bases each of which is disposed on the wiring board to face a corresponding side portion of the second semiconductor chip so as to be continuous or discontinuous with adjacent ones of the corner bases, wherein each of the side portions of the second semiconductor chip is located between adjacent ones of the corner bases.