Patent ID: 6677193
Filing Date: 2004-01-13
Classification: H01L

Abstract:
A method of producing a semiconductor device having an SOI (Silicon On Insulator) transistor and a multi-layer wiring, comprising:a step of preparing a silicon substrate having a front face and a back face; an inter-layer insulation layer forming step of forming an inter-layer insulation layer on the front face of said silicon substrate; a wiring step of forming a multi-layer wiring via contact holes and wiring trenches in said inter-layer insulation layer; a substrate fixing step of fixing a substrate on said inter-layer insulation layer; an SOI (Silicon On Insulator) layer forming step of thinning said silicon substrate from the back face into a thin film so that said silicon substrate becomes an SOI layer; and a transistor forming step of forming a channel layer and a gate electrode on a back of said channel layer in said SOI layer, and further forming a source and a drain facing each other having said channel layer in between so that an SOI transistor is obtained.