Patent ID: 7270258
Filing Date: 2007-09-18
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor integrated circuit device, comprising the steps of: (a) providing an organic wiring substrate; (b) disposing a plurality of semiconductor chips over a first stage; (c) disposing the substrate at first main surface sides of the semiconductor chips over the first stage and bonding the semiconductor chips and the substrate to each other temporarily by thermocompression bonding while heating the semiconductor chips from the second main surface sides of the chips over the first stage; (d) after the step (c), disposing the temporarily bonded semiconductor chips and substrate over a second stage adjacent to the first stage; and (e) pressurizing the semiconductor chips over the second stage for a longer time than in the first stage while heating the semiconductor chips from the second main surface sides of the chips to effect a main bonding of the semiconductor chips and the substrate by thermocompression bonding, wherein the heating of the semiconductor chips from the second main surface sides of the chips over the second stage is performed directly without interposition of the organic wiring substrate.