International Business Machines Corporation

Globalfoundries Inc.

Roger Lam

Thomas Weiss

Hilton T Toy

Benjamin V Fasano

Paul Francis Fortier

Shidong Li

Thomas Edward Lombardi

Edmund D Blackshear

Wai Mon Ma

Elaine Cyr

Marcus E Interrante

Todd H Buley

Charles Hampton Perry

Daniel P O'Connor

Brian D Chapman

Arch F Nuttall

John P Weir

An improved electronic module assembly and method of fabrication is disclosed. A patterned array of adhesive is deposited on a laminate, to which a chip is attached. Each region of adhesive is referred to as a lid tie. A lid is placed on the laminate, and is in contact with the lid ties. The lid ties serve to add stability to the laminate and reduce flexing during thermal processing and mechanical stress.

Electronic module assembly with patterned adhesive array

Disclosed is a method, system, and computer program storage product for optimizing land grid array site geometry on an electronic assembly mounting. A first member including at least one convex region is aligned with a first portion of an electronic assembly mounting. A second member is aligned with a second portion of the electronic assembly mounting. The second portion includes at least one concave region corresponding to the convex region of the first portion. The second member includes a dome-shaped region having a predefined geometry. Heat is applied to at least one of the electronic assembly mounting, the first member, and the second member. Pressure is applied to at least one of the first member and the second member to reshape the convex region into a substantially flat surface. Applying pressure also reshapes the concave region into a geometry corresponding to the predefined geometry of the dome-shaped region.

Method of optimizing land grid array geometry

An apparatus for applying solder to an electronic circuit board substrate includes a solder wave device for generating a molten wave of solder and, above that, a movable substrate holder. The substrate holder includes a support for an electronic circuit board substrate inclined at an angle with respect to the direction and an opening on a bottom thereof for access of a protruding connector disposed near an end of the substrate to the molten solder wave. The angle of incline is sufficient to prevent a component disposed at a distance from the end of the substrate from contacting the molten solder wave when the substrate holder is moved over the solder wave device. A shield in the substrate holder prevents the component not to be soldered from contacting the molten solder wave.

Inclined solder wave methodology for wave soldering double sided pin-in-hole electronic components

A method in which an alignment tool consisting of a nest and guide tool is used to align an LGA module in the nest and then the LGA module is removed from the nest and aligned with a circuit card by the use of the guide tool.

Method of assembling a land grid array module

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Fishkill, NY, United States of America

Roger Lam