Patent ID: 8507358
Filing Date: 2013-08-13
Classification: B81B,B81C,H01L

Abstract:
1. A method of forming a composite wafer semiconductor, the method comprising: providing a first wafer, the first wafer having a first side and a second side, the second side being substantially opposite the first side; providing a second wafer; forming an isolation set on the first side of the first wafer; etching the isolation set to create a free space in the isolation set; bonding the second wafer to the isolation set; forming a floating structure in the second wafer over the free space; forming a surface mount pad on the second side of the first wafer; electrically coupling the floating structure to the surface mount pad using a through silicon via (TSV) conductor, wherein the TSV extends through the isolation set; and forming a via conductor through the second wafer and through a portion of the isolation set to electrically couple the floating structure to the via conductor.