Patent ID: 8853865

Claim:
A semiconductor device comprising: a semiconductor chip of quadrangular shape and having a main surface over which a plurality of electrode pads are formed; a plurality of lead terminals each having an upper surface over which the semiconductor chip is placed such that the main surface of the semiconductor chip faces the upper surface of each of the plurality of lead terminals, and a first lower surface and a second lower surface located on the opposite side to the upper surface, the plurality of lead terminals being respectively electrically coupled with the plurality of electrode pads of the semiconductor chip; and a sealing body having a main surface and a back surface located on the opposite side to the main surface and sealing the semiconductor chip and a part of each of the plurality of lead terminals, wherein each of the plurality of lead terminals has the first lower surface exposed from the back surface of the sealing body and the second lower surface disposed within the sealing body, wherein each of the plurality of electrode pads of the semiconductor chip overlaps the first lower surface of the corresponding lead terminal of the plurality of lead terminals in plan view, wherein the main surface of the semiconductor chip has a first side and a second side which intersects the first side, and wherein, in the plan view, a corner point of the first and second sides of the main surface of the semiconductor chip is surrounded by a perimeter of the upper surface of a first lead terminal of the plurality of lead terminals.