International Business Machines Corporation

David Michael Passante

Jeffrey Alan Knight

James W Fuller, Jr

Allen Frederick Moring

Joseph Alphonse Kotylo

Mary Beth Fletcher

David John Russell

William John Rudik

Stephen John Kosteva

Jonathan Craig Whitcomb

A semiconductor package and method for preparing same to obtain improved die adhesion to organic chip carriers has been developed. A copper die bond pad is coated with a passivation material and attached to an organic card with the same passivation material. A semiconductor die may be adhered to the coated die bond pad with either the same passivation material or a common die bond adhesive. Alternatively, the passivation material is coated only on the portion of the die bond pad where the die is attached, and common die bond adhesive attaches the die bond pad to the organic card.

Apparatus and process for improved die adhesion to organic chip carriers

According to the present invention, a technique for controlling the flow of plastic encapsulant which is applied over an integrated circuit (I/C) chip wire bonded to wire pads formed on a chip carrier substrate is provided. This technique includes applying a barrier material to the substrate surrounding the wire bond pads, which barrier material is in the form of two walls projecting upwardly from the surface thereof, and defining a well between the walls to confine the flow of the encapsulant material. This prevents the encapsulant material from flowing past a desired defined boundary and covering the circuit connection pads which are not intended to be covered.

Method and structure for constraining the flow of incapsulant applied to

Structure for constraining the flow of encapsulant applied to an I/C

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Endicott, NY, United States of America

David Michael Passante