Patent ID: 7008860
Filing Date: 2006-03-07
Classification: H01L

Abstract:
1. A method of manufacturing a substrate having a buried insulating layer, comprising an insulating layer formation step of forming an insulating layer on a semiconductor region of a first substrate including the semiconductor region; an implantation step of implanting ions into the semiconductor region through the insulating layer to form an ion-implanted layer; an insulating layer thinning step of thinning down the insulating layer by chemical etching after the implantation step; a bonding step of bonding a second substrate to the first substrate via the insulating layer to prepare a bonded substrate stack after the insulating layer thinning step; and a splitting step of splitting the bonded substrate stack by using the ion-implanted layer to obtain a substrate which has the insulating layer on the second substrate and a semiconductor layer as part of the semiconductor region on the insulating layer.