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contributor authorWu, Bo
contributor authorZhang, Shuanghai
contributor authorWang, Fuliang
contributor authorChen, Zhuo
date accessioned2019-02-28T11:14:25Z
date available2019-02-28T11:14:25Z
date copyright8/6/2018 12:00:00 AM
date issued2018
identifier issn1043-7398
identifier otherep_140_04_044502.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4254182
description abstractThe incorporation of a micro copper pillar is considered as the major interconnection method in three-dimensional (3D) integrated circuit (IC) intergradation under high-density I/O conditions. To achieve low-temperature bonding, this study investigated the thermosonic flip chip bonding of a copper pillar with a tin cap. The effect of bonding force on bonding strength was studied, and an average bonding strength 2500 g (approximately 84.8 MPa) was obtained in 2 s, at an optimized bonding force of 0.11 N per 40 μm pillar bump, and substrate temperature of 200 °C. Additionally, the effect of the bonding force on bonding interface microstructure and intermetallic compounds (IMCs) was also investigated. Tin whiskers were also observed at the bonding interface at low bonding forces.
publisherThe American Society of Mechanical Engineers (ASME)
titleMicro Copper Pillar Interconnection Using Thermosonic Flip Chip Bonding
typeJournal Paper
journal volume140
journal issue4
journal titleJournal of Electronic Packaging
identifier doi10.1115/1.4040794
journal fristpage44502
journal lastpage044502-5
treeJournal of Electronic Packaging:;2018:;volume( 140 ):;issue: 004
contenttypeFulltext


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