Patent ID: 8080122
Filing Date: 2011-12-20
Classification: H01L

Abstract:
1. A method of manufacturing a wiring substrate, comprising: a first step of preparing a dummy chip and providing a peeling facilitating member on a surface of the dummy chip; a second step of forming an accommodating opening, in which the dummy chip is accommodated, in a reinforcing substrate; a third step of providing a tape member on one surface of the reinforcing substrate to cover at least the accommodating opening; a fourth step of inserting the dummy chip into the accommodating opening to provide the dummy chip on the tape member with the surface of the dummy chip on which the peeling facilitating member is provided in contact with the tape member; a fifth step of sealing the reinforcing substrate and the dummy chip with a resin; a sixth step of removing the tape member and forming a build-up wiring layer, in which an insulating layer and a wiring layer are stacked, on a surface from which the tape member is removed, said surface from which the tape member is removed including the surface of the dummy chip on which the peeling facilitating member is provided; a seventh step of removing the resin; and an eighth step of peeling the dummy chip from the build-up wiring layer with the peeling facilitating member facilitating peelability of the dummy chip from the build-up wiring layer.