Patent ID: 8581417

Claim:
A semiconductor device comprising: a substrate having a plurality of electrodes on its one surface; a first semiconductor chip having its back surface joined to the one surface of the substrate and having a plurality of bonding pads in a central region of its front surface; a plurality of wires which connect the electrodes of the substrate and the bonding pads of the first semiconductor chip to each other; a second semiconductor chip disposed so that its back surface is positioned on the front surface of the first semiconductor chip with a bonding layer interposed between the first and second semiconductor chips; and a wire retaining member which is disposed in a region of the front surface of the first semiconductor chip including a middle point, the middle point being midway between the bonding pads and a peripheral edge of the first semiconductor chip, and which retains, at a position of a center of a spacing between the first semiconductor chip and the second semiconductor chip, at least a portion of each of a subset of the plurality of wires passing through a space between the first semiconductor chip and the second semiconductor chip.