Wafer-trilayer adhesive layer-support composite, wafer support with trilayer adhesive layer for use in wafer processing, trilayer adhesive layer for use in wafer processing, method of manufacturing said composite and method of manufacturing a thin wafer using said composite

摘要

A wafer processing laminate is provided comprising a support (3), a temporary adhesive layer (2), and a wafer (1). The temporary adhesive layer (2) has a trilayer structure consisting of a first temporary bond layer (A) of thermoplastic siloxane bond-free polymer, a second temporary bond layer (B) of thermoplastic siloxane polymer, and a third temporary bond layer (C) of thermosetting modified siloxane polymer. In a peripheral region, the second layer (B) is removed so that the first layer (A) is in close contact with the third layer (C).