Patent ID: 7795113

Claim:
A method for bonding and releasing a first element to and from a second element, the method comprising: providing a first element having a main surface; providing a sacrificial layer on the main surface of the first element, the sacrificial layer being selectively removable with respect to the first element; providing a second element having a main surface; applying a removable attachment layer on top of the sacrificial layer or on top of the main surface of the second element; bonding the first element to the second element by contacting one element to the removable attachment layer present on the other element, thereby obtaining a composite substrate; subjecting the composite substrate to a temperature increase, wherein the first and second elements are released or become easily releasable due to a phase change of the removable attachment layer; and removing the sacrificial layer by an etching agent or a solvent after the release of the first and second elements, thereby also removing residues left from the removable attachment layer.