Patent ID: 8362626

Claim:
A semiconductor device, comprising: (a) a chip mounting part; (b) a first semiconductor chip mounted over the chip mounting part, the first semiconductor chip having a first major surface, the first semiconductor chip including a driver circuit formed over the first major surface, and a plurality of pads arranged along a periphery of the first major surface; (c) a second semiconductor chip mounted over the first major surface of the first semiconductor chip, the second semiconductor chip having a second major surface, the second semiconductor chip including an analog circuit block formed over the second major surface, the analog circuit block including a plurality of circuits, the plurality of circuits of the analog circuit block including an analog to digital conversion circuit, and wherein an operating voltage of the analog to digital conversion circuit is lower than that of other circuits of the second semiconductor chip, (d) a plurality of leads electrically coupled to the first semiconductor chip and the second semiconductor chip; and (e) a sealing body sealing the first semiconductor chip, the second semiconductor chip, and a part of each of the plurality of leads, wherein the driver circuit of the first semiconductor chip is arranged at a location closer to a periphery edge than to a center of the first major surface of the first semiconductor chip, and wherein the second semiconductor chip is mounted over the first major surface of the first semiconductor chip so that the second semiconductor chip overlaps with the driver circuit of the first semiconductor chip, and the analog to digital conversion circuit of the second semiconductor chip does not overlap with the driver circuit of the first semiconductor chip in plan view.