Patent ID: 7329364
Filing Date: 2008-02-12
Classification: C30B

Abstract:
1. A method for manufacturing a bonded wafer with single crystal ferroelectric film, comprising: a) providing a single crystal ferroelectric wafer, a first carrier wafer, and a second carrier wafer; b) coating a bonding material over the surface of said single crystal ferroelectric wafer; c) bonding said single crystal ferroelectric wafer to said first carrier wafer with said bonding material for forming a sandwich structure as single crystal ferroelectric wafer/bonding material/first carrier wafer; d) thinning said single crystal ferroelectric wafer for forming a single crystal ferroelectric film; e) bonding said single crystal ferroelectric film to the second carrier wafer, and removing said bonding material and said first carrier wafer; and f) thinning said single crystal ferroelectric film for forming said single crystal ferroelectric film.