Patent ID: 9355890
Filing Date: 2016-05-31
CPC Classification: H01L

Claim Text:
1. A method of manufacturing a semiconductor device comprising: providing a semiconductor substrate that is comprised of: a supporting substrate; a first insulating film formed over the supporting substrate; and a semiconductor layer formed over the first insulating film, and that includes a first region and a second region over the upper surface of the semiconductor layer; exposing the upper surface of the first insulating film in the second region by forming a second insulating film over the semiconductor layer and by processing the semiconductor layer with the use of the second insulating film as a mask; forming a third insulating film so as to cover the semiconductor layer, the second insulating film, and the first insulating film; exposing the upper surface of the supporting substrate by opening the third insulating film and the first insulating film in the second region; forming a first epitaxial layer in the opening of the first insulating film and the third insulating film; exposing the upper surface of the semiconductor layer by polishing the first epitaxial layer, the third insulating film, and the second insulating film; and after the exposing of the upper surface of the semiconductor layer, forming a semiconductor element over each of the semiconductor layer in the first region and the first epitaxial layer in the second region.