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Ultrasonic bonding based on Ni micro-nano cones array (MCA) was developed in this study. Interfacial morphologies of bonding joints were investigated. The deformation of nanocones demonstrated the complexity of initial indentation process. Analysis of morphology evolution under different bonding pressure revealed that interfacial voids shrinkage faster as pressure increase. The time dependent morphology...
Ultrasonic bonding based on Ni micro-nano cones array (MCA) was developed in this study. Interfacial morphologies of bonding joints were investigated. The deformation of nanocones demonstrated the complexity of initial indentation process. Analysis of morphology evolution under different bonding pressure revealed that interfacial voids shrinkage faster as pressure increase. The time dependent morphology...
Ag-8Au-3Pd alloy wire has shown its advantages as a kind of interconnect material in semiconductor packaging. In thermosonic wire bonding, a uniformed and stable Free-Air-Ball (FAB) created by electronic flame-off (EFO) is crucial to a reliable 1st bond. In this study, the relationship between Free-Air-Ball (FAB) size and EFO parameters (EFO current, EFO time) of 0.6 mil Ag-8Au-3Pd alloy wire has...
To conform to the ever-emerging market demand, stacked memory devices have been more widely utilized. The stacking method also reduces the cost of electronical components through the way that stacking could fully utilize currently on-hand equipment without any new investment. While, starting from late 2003, flash memory manufacturers begin experience capacity degradation, specifically with multiple...
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