Patent ID: 9633892
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. A method for manufacturing a semiconductor device comprising the steps of: forming a first oxide film on a surface of a first semiconductor substrate by performing thermal oxidation treatment on the first semiconductor substrate; forming a second oxide film over the first oxide film on the first semiconductor substrate by a chemical vapor deposition method with use of TEOS gas; forming an embrittled region in the first semiconductor substrate by irradiating the first semiconductor substrate with hydrogen ions through the first oxide film and the second oxide film; forming a third oxide film on a surface of a second semiconductor substrate by performing thermal oxidation treatment on the second semiconductor substrate; and bonding the second semiconductor substrate and the first semiconductor substrate so as to face each other with the first oxide film, the second oxide film and the third oxide film interposed therebetween, wherein a first surface of the second oxide film is in contact with the first oxide film, wherein a second surface of the second oxide film is in contact with the third oxide film, wherein the second surface is an opposite side of the first surface, wherein the hydrogen ions include H wherein the proportion of H