Patent ID: 8946820
Filing Date: 2015-02-03
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor substrate in which a plurality of single crystal semiconductor films are disposed on a base substrate, the method characterized by comprising steps of: bonding a plurality of stacked substrates, in which a first insulating film, a single crystal semiconductor film, a second insulating film, and a support substrate having a fragile layer formed by ion irradiation in the inside and being made from a single crystal semiconductor material are stacked sequentially, to a base substrate in such a way that the first insulating film is located on a side close to the base substrate; applying heat to the plurality of stacked substrates to separate part of the support substrate at the fragile layer and transfer the first insulating film, the single crystal semiconductor film, the second insulating film, and part of the support substrate to the base substrate; and subjecting the base substrate to an etch back treatment to expose the second insulating film by etching part of the transferred support substrate.