Patent ID: 7884367
Filing Date: 2011-02-08
Classification: H01L

Abstract:
1. A semiconductor device, including a polycrystalline Si thin film and a single crystal Si thin film that are provided on an insulating substrate, which is constituted by the steps of: depositing an SiO removing partially a predetermined area of the SiO cutting a single crystal Si substrate into a predetermined shape so as to partially or substantially entirely cover the predetermined area that has been subjected to the etching, said single crystal Si substrate having a surface which has been oxidized or on which an SiO cleaning the insulating substrate and the single crystal Si substrate so as to activate surfaces of both the substrates; bonding a hydrogen ion implantation surface of the single crystal Si substrate that has been cut into the predetermined shape to the predetermined area that has been subjected to the etching at a room temperature; dividing the single crystal Si substrate at the hydrogen ion implantation portion in a cleaving manner by performing a heating process, so as to form the single crystal Si thin film; depositing an insulating film and an amorphous Si film sequentially on a surface of the insulating substrate; and growing a polycrystalline Si layer, by heating the amorphous Si film, so as to form the polycrystalline Si thin film, wherein a maximum size of the single crystal Si thin film is not more than 10 cm.