Hot-Melt Underfill Composition and Methos of Application

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United States of America Patent

SERIAL NO

11275080

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Abstract

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This invention provides a process for applying a wafer level underfill comprising: providing a solvent-free hot-melt underfill composition; melting the underfill; applying the underfill in a uniform layer to the active side of a semiconductor wafer; returning the underfill to a solid state; optionally B-staging the underfill; optionally removing any excess underfill from the bumps on the wafer; and dicing the wafer into individual dies.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL STARCH AND CHEMICAL INVESTMENT HOLDING CORP1000 UNIQEMA BOULEVARD NEW CASTLE DE 19720

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chaware, Raghunandan Ramesh Huntington Beach, CA 1 15
He, Xiping Cerritos, CA 5 106
Shenfield, David Fountain Valley, CA 6 44

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