Patent Number: 7,823,278

Title: Method for fabricating electrical contact buttons

Abstract: An interposer having one or more hollow electrical contact buttons disposed in a carrier. The interposer is formed by disposing sacrificial posts in vias of the carrier. The electrical contact buttons are formed on the sacrificial posts by a metallizing process in desired pattern using a mask. The sacrificial posts are made of a material that thermally decomposes upon application of heat without altering the carrier or the electrical contact buttons.

Inventors: Hougham; Gareth G (Ossining, NY), Fogel; Keith E (Nanuet, NY), Rosner; Joanna (Cortlandt Manor, NY), Lauro; Paul A (Brewster, NY), Goma; Sherif (Hawthorne, NY), Zinter, Jr.; Joseph (Brewster, NY)

Assignee: International Business Machines Corporation

International Classification: H05K 3/02 (20060101)

Expiration Date: 2019-11-02 0:00:00