Patent ID: 7605056

Claim:
A manufacturing method of a semiconductor device comprising the steps of: forming a release layer over a first substrate; forming a transistor over the release layer; forming an insulating layer over the transistor; forming a first opening portion in the insulating layer and forming a first conductive layer electrically connected to a source region or a drain region of the transistor; forming a first resin layer over the insulating layer; forming a second opening portion so as to expose at least a part of the release layer; forming a layer comprising a conductive particle so as to be in contact with the first conductive layer; forming a second resin layer over a second substrate, the second substrate being provided with a second conductive layer; electrically connecting the first conductive layer to the second conductive layer with the layer comprising the conductive particle interposed therebetween by providing the second substrate over the first resin layer, the first resin layer being formed over the first substrate; and separating a stack including the transistor from the first substrate by using the second substrate with physical force.