Patent ID: 6794273
Filing Date: 2004-09-21
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device using a wiring substrate, comprising the steps of:a) forming a peelable resin layer on a silicon substrate, said peelable resin layer having a lower adhesiveness to said silicon substrate and being easily peelable from said silicon substrate; b) forming the wiring substrate on said peelable resin layer; c) mounting a plurality of semiconductor chips on said wiring substrate; d) forming semiconductor devices by sealing said plurality of semiconductor chips by a sealing resin; e) individualizing said semiconductor devices by dicing said semiconductor devices from the sealing resin side but leaving said silicon substrate; f) peeling each of said individualized semiconductor devices from said silicon substrate such that said silicon substrate and said peelable resin layer is separated; and g) exposing terminals provided on said wiring substrate by forming openings through said peelable resin layer or by removing said peelable resin layer.