Patent ID: 7691677

Claim:
A method of manufacturing a semiconductor device, comprising the steps of: (a) providing a lead frame including chip mounting portions, leads arranged around each of the chip mounting portions, and suspending leads connecting to each of the chip mounting portions, the chip mounting portions and the suspending leads being half-etched and having projecting portions; (b) mounting a semiconductor chip over each of the chip mounting portions, each semiconductor chip having a main surface and a back surface opposite to the main surface, with pads being disposed on the main surface; (c) bonding a conductive wire to each of the leads and each of the pads; (d) providing a resin molding die comprised of an upper die and a lower die, the resin molding die having gate portions for injecting resin, and cavities formed between the upper and lower dies; (e) after steps (c) and (d), disposing the lead frame on a film sheet disposed over the lower die of the resin molding die; (f) after step (e), clamping the upper and lower dies in such a manner that the leads and the projecting portions come into close contact with the film sheet, the semiconductor chips being arranged inside corresponding ones of the cavities of the resin molding die; (g) after step (f), injecting insulative resin into the cavities to form bodies covering the semiconductor chips, the conductive wires, first portions of the leads, and first portions of the chip mounting portions; and (h) after step (g), cutting second portions of the leads and the suspending leads to separate the sealing bodies, wherein, after step (h), the leads and the projecting portions are partially exposed from back surfaces of the sealing bodies, and wherein, after step (h), the insulative resin covers back surfaces of the chip mounting portions and the suspending leads which face toward the back surfaces of the sealing bodies.