Patent ID: 7514293
Filing Date: 2009-04-07
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: (a) providing a lead frame having a chip mounting portion, a plurality of leads disposed around the chip mounting portion, and suspending leads for supporting the chip mounting portion, each of the suspending leads having a bent portion, metal plating films being formed over a part of each of the plurality of leads and a part of each of the suspending leads including the bent portion, each of the metal plating films formed over the suspending leads having one end portion and another end portion opposing to the one end portion, the one end portion being positioned closer to the chip mounting portion than the another end portion; (b) after the step (a), mounting a semiconductor chip over the chip mounting portion such that the one end of each of the metal plating films formed over the suspending leads is overlapped with the semiconductor chip, the semiconductor chip having a main surface, a plurality of pads formed on the main surface and a rear surface opposing to the main surface; (c) after the step (b), electrically connecting the plurality of pads of the semiconductor chip with the plurality of leads via a plurality of wires and the metal plating films formed over the part of the plurality of leads, respectively; and (d) after the step (c), sealing the semiconductor chip and the plurality of wires with resin such that the rear surface of the semiconductor chip is contacted with the resin; wherein the bent portion is formed by following steps,