Patent ID: 8518799
Filing Date: 2013-08-27
Classification: H01L

Abstract:
1. A method of forming a semiconductor on glass structure, comprising: obtaining a glass substrate having a bonding surface and a semiconductor wafer having a bonding surface; depositing a stiffening layer having a Young's modulus of about 125 GPa or higher on one of the bonding surface of the glass substrate and the bonding surface of the semiconductor wafer; implanting ions into the bonding surface of the semiconductor wafer to form an exfoliation layer in the bonding surface region of the semiconductor wafer; contacting the bonding surface of the semiconductor wafer with the bonding surface of the glass substrate, with the stiffening layer between the glass substrate and the semiconductor wafer; bonding the exfoliation layer to the glass substrate, with the stiffening layer between the glass substrate and the semiconductor wafer, by heating the semiconductor wafer and glass substrate to an elevated temperature; and separating the exfoliation layer from a remaining portion of the semiconductor wafer, leaving the exfoliation layer bonded to the glass substrate, with the stiffening layer between and, wherein an as separated surface of the exfoliation layer has a surface roughness with a skew level of about 0.6 or lower.