Resin Self-Alignment Processes for Self-Assembly Systems

[+] Author and Article Information
Jong-Min Kim, Kiyokazu Yasuda, Kozo Fujimoto

Department of Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565-0871, Japan

J. Electron. Packag 127(1), 18-24 (Mar 21, 2005) (7 pages) doi:10.1115/1.1846061 History: Received January 06, 2004; Revised July 08, 2004; Online March 21, 2005
Copyright © 2005 by ASME
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Schematics of a self-alignment technique using the surface tension of (a) the water and (b) the molten solder
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Principles of the resin self-alignment process of (a) the put-down model and (b) the pull-up model
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Mathematical models of an axisymmetric liquid joint for (a) the put-down model and (b) the pull-up model
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The assembly test vehicle
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Diagram of the experimental system (pull-up model)
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Relationship between the liquid volume and the stand-off height (SOH) normalized with respect to the pad radius
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3-D liquid joint geometry with one of both dimensionless force and liquid volume: (a) SOH/r=0.31,θs=111.8 with convex geometry (put-down model); (b) SOH/r=0.33,θs=80.3 with concave geometry (pull-up model)
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Restoring force acting on the component with different misalignment level for both alignment models
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Self-alignment behaviors of (a) the put-down model and (b) the pull-up model
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Self-alignment motions of (a) the put-down model and (b) the pull-up model with 100 μm for misalignment level
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Measured alignment accuracies at different levels of misalignment




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