Patent ID: 8609468

Claim:
A method of manufacturing a semiconductor device comprising the steps of: (a) providing a lead frame having a die pad, a plurality of suspension leads supporting the die pad, a plurality of first leads spaced apart from the die pad and arranged adjacent to the die pad, and a plurality of second leads spaced apart from the die pad and supporting the suspension leads; (b) after the step (a), mounting, over an upper surface of the die pad, a semiconductor chip having a front surface, a plurality of bonding pads formed over the front surface, and a rear surface opposite to the front surface such that the rear surface faces to the upper surface of the die pad; (c) after the step (b), electrically connecting the bonding pads with the first leads via a plurality of wires, respectively; and (d) after the step (c), placing the lead frame having the semiconductor chip thereon between a first molding die having a recessed portion and a second molding die faces to the first molding die, clamping a portion of each of the suspension leads, a portion of each of the first leads, and a portion of each of the second leads with the first molding die and the second molding die, supplying a resin into the recessed portion so as to seal the semiconductor chip and the wires with the resin such that a lower surface of the die pad opposite to the upper surface, the portion of each of the suspension leads, the portion of each of the first leads and the portion of each of the second leads are exposed, and thereby forming a sealing body, wherein a shape in a plan view of the sealing body is comprised of quadrangle; wherein the suspension leads extend from the die pad to a plurality of corner portions of the sealing body, in the plan view; wherein each of the suspension leads has one end portion connected to the die pad, the other end portion opposite to the one end portion, and an intermediate portion located between the one end portion and the other end portion, and wherein some of the second leads are connected at the intermediate portion of each of the suspension leads, or at the die pad side of each of the suspension leads from the intermediate portion.