Patent ID: 8236669
Filing Date: 2012-08-07
Classification: C09J,H01L,Y10T

Abstract:
1. A wafer bonding method comprising: providing a stack comprising first and second substrates bonded together via a bonding composition layer comprising a compound; subjecting said stack to a temperature sufficient to soften said bonding layer; and separating said first and second substrates, wherein said compound is selected from the group consisting of polymers and oligomers having a formula selected from the group consisting of wherein R is selected from the group consisting of X is selected from the group consisting of phenyl sulfones, aromatics, aliphatic, and cyclic aliphatics; and wherein Z is selected from the group consisting of siloxanes and moieties comprising ether bridges, and wherein said compound further comprises an endcap group derived from a compound selected from the group consisting of aromatic mono-amines, aliphatic mono-amines, cyclo-aliphatic mono-amines, and phthalic anhydrides.