Patent ID: 9064686
Filing Date: 2015-06-23
Classification: B32B,H01L,Y10T

Abstract:
1. A method for temporary bonding two wafer surfaces comprising: providing a first wafer comprising first and second wafer surfaces opposite to each other; providing a second wafer comprising first and second wafer surfaces opposite to each other; applying a first adhesive layer upon said first surface of said first wafer; curing the first adhesive layer, thereby producing a cured first adhesive layer; applying a second adhesive layer upon said first surface of said second wafer; providing a bonder module comprising an upper chuck assembly and a lower chuck assembly arranged below and opposite the upper chuck assembly; inserting said first wafer into said bonder module and holding said first wafer by said upper chuck assembly so that its first surface with the cured first adhesive layer faces down; inserting said second wafer into said bonder module and placing said second wafer upon said lower chuck assembly so that said second adhesive layer faces up and is opposite to said first adhesive layer; moving said lower chuck assembly upwards and bringing said second adhesive layer in contact with said cured first adhesive layer; and curing said second adhesive layer, thereby forming a temporary bond between said first and second wafers.