Patent ID: 6933179
Filing Date: 2005-08-23
Classification: H01L

Abstract:
1. A method of manufacturing semiconductor devices, comprising: forming a plurality of integrated circuits on a main surface of a semiconductor wafer, the plurality of integrated circuits having a plurality of electrode pads for respectively connecting thereto; forming a plurality of bumps on said main surface that are respectively connected to said electrode pads; placing a sheet of encapsulating material containing a thermosetting resin having a curing temperature over said semiconductor wafer so as to cover said main surface; heating and curing said sheet encapsulating material by application of heat to said semiconductor wafer by a heating apparatus on which said semiconductor wafer is placed to thereby form an encapsulating resin layer; polishing said encapsulating resin layer to expose portions of said plurality of bumps; and dividing said semiconductor wafer into individual semiconductor device chips; wherein said heating and curing are done in such a manner that the heating of said sheet encapsulating material is at a heating temperature lower than the curing temperature of said sheet encapsulating material, at which the viscosity of said sheet encapsulating material is low and voids contained in said sheet encapsulating material can escape, and said sheet encapsulating material is kept at said heating temperature for a period of time determined to be sufficient for said voids to, be eliminated, and thereafter said sheet encapsulating material is increased in temperature to said curing temperature or higher.