Patent ID: 7381629
Filing Date: 2008-06-03
Classification: H01L

Abstract:
1. A method of transfer bonding thin films and passive or active device structures to another substrate comprising: providing a substrate having target transfer regions thereon; providing a sacrificial wafer; coating said sacrificial wafer with a polymer layer with low adhesion to metals; coating a conductive layer on said polymer layer; coating a photoresist layer over said conductive layer; patterning said photoresist layer to provide openings to said conductive layer; forming said thin film and passive or active device structures on said conductive layer within said openings; bonding said substrate to said sacrificial wafer wherein said thin film and passive or active device structures and said photoresist layer provide said bonding and wherein said thin film and passive or active device structures contact said substrate at said target transfer regions; and stripping said photoresist in a high frequency agitation bath wherein said photoresist separates from said sacrificial wafer and wherein said thin film and passive or active device structures separate from said polymer layer at an interface between said polymer layer and said thin film and passive or active device structures to complete said transfer bonding of said thin films and passive or active device structures to said another substrate.