At&t Bell Laboratories

American Telephone & Telegraph Co., At&t Bell Laboratories

Stephen G Seger, Jr

Sungho Jin

Alan Michael Lyons

Thomas H Tiefel

Richard C Sherwood

John J Mottine, Jr

Disclosed is a method for making a solder joint without flux, in the presence of an inert gas. A pair of articles having solder-coated surfaces are heated to melt the solder, pressure is applied to the joint region, and the articles are cooled. During the heating step, inert gas is flowed over the articles.

Method for manufacturing a soldered article

Electrical interconnection is established by means of an anisotropically conductive, composite layer medium comprising electrically conductive particles in a nonconductive matrix material. Enhanced uniformity of conductivity across the medium, and minimized incidence of lateral shorting are achieved as a result of essentially uniform distribution of electrically conductive particles which are also magnetic, such distribution resulting upon application of a magnetic field essentially perpendicular to a layer before or during hardening of the matrix material.

Anisotropically conductive composite medium

Growing community of inventors

Bedminster, NJ, United States of America

Stephen G Seger, Jr