Patent ID: 7371606
Filing Date: 2008-05-13
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: (a) providing a substrate; (b) mounting a semiconductor chip over a main surface of the substrate through protruded electrodes; (c) placing the substrate with the semiconductor chip mounted thereover onto a molding surface of a lower die of a resin molding die; (d) reducing the internal pressure of a cavity of the molding die; and (e) clamping the substrate so as to be sandwiched by the lower die and an upper die of the molding die and thereafter injecting a sealing resin into the cavity of the molding die and also between surfaces of the substrate and surfaces of the semiconductor chip opposing the surfaces of the substrate to seal the semiconductor chip, (e1) establishing a relative positional relation between the lower die and the upper die so that a clamping pressure for the substrate becomes a first clamping pressure; (e2) after the step (e1), injecting the sealing resin through injection ports of the cavity of the molding die; and (e3) establishing a relative positional relation between the lower die and the upper die so that the clamping pressure for the substrate becomes a second clamping pressure higher than the first clamping pressure at a time point at which the sealing resin reaches a position intermediate between the injection ports and air vents in the molding die.