Hot-melt underfill composition and method of application

Hot-melt underfill composition and method of application

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; optional...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHENFIELD, DAVID, CHAWARE, RAGHUNANDAN RAMESH, HE, XIPING
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung: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.