Patent ID: 7635617
Filing Date: 2009-12-22
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device, comprising: conducting a first heat treatment to a glass substrate; forming a separation layer at a predetermined depth from a surface of a single-crystalline semiconductor substrate; forming a silicon oxide film over the single-crystalline semiconductor substrate by chemical vapor deposition; superposing the single-crystalline semiconductor substrate and the glass substrate to which the first heat treatment is conducted on each other with the silicon oxide film interposed therebetween and bonding the single-crystalline semiconductor substrate to the glass substrate; conducting a second heat treatment at a temperature close to a strain point of the glass substrate with the single-crystalline semiconductor substrate and the glass substrate superposed on each other, to generate a crack at the separation layer; and separating the single-crystalline semiconductor substrate from the glass substrate so that a single-crystalline semiconductor layer remains on the glass substrate, wherein the first heat treatment is conducted at a temperature higher than that of the second heat treatment.