Patent ID: 7851333

Claim:
A method for producing an apparatus comprising a device integrated into a device layer structure, the method comprising: providing a device integrated into a device layer structure disposed on a semiconductor substrate with an insulating layer being disposed between the semiconductor substrate and the device layer structure, the device comprising a bulk acoustic wave filter; affixing a temporary carrier substrate to the semiconductor substrate with the device layer structure facing the temporary carrier substrate; thinning or removing the semiconductor substrate from a side of the semiconductor substrate opposed to the insulating layer; bonding an insulating carrier substrate such that the insulating layer is positioned between the device layer structure and the insulating carrier substrate, the insulating carrier substrate having a patterned surface facing the insulating layer and the bonding being performed such that, after bonding, the patterned surface of the insulating carrier substrate and a surface of the insulating layer facing the insulating carrier substrate enclose a cavity overlapping the device viewed in a thickness direction of the device layer structure; and removing the temporary carrier substrate.