Patent ID: 9171749
Filing Date: 2015-10-27
Classification: H01L

Abstract:
1. A method of removing a handler wafer comprising: providing a handler wafer formed of a single layer and a semiconductor device wafer having a plurality of semiconductor devices, the semiconductor device wafer having an active surface side and an inactive surface side; applying an amorphous carbon layer directly to a surface of the handler wafer; applying an adhesive layer directly to at least one of the amorphous carbon layer of the handler wafer and the active surface side of the semiconductor device wafer; joining the handler wafer to the semiconductor device wafer through the adhesive layer such that the amorphous carbon layer is between the surface of the handler wafer and the adhesive layer; applying laser radiation to the handler wafer to cause heating of the amorphous carbon layer that in turn causes heating of the adhesive layer; and separating the plurality of semiconductor devices of the semiconductor device wafer from the handler wafer.