The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1998
Filed:
Apr. 09, 1996
Richard B Booth, Williamson County, TX (US);
Michael A Gaynes, Broome County, NY (US);
Robert M Murcko, Broome County, NY (US);
Viswanadham Puligandla, Travis County, TX (US);
Judith M Roldan, Westchester County, NY (US);
Ravi Saraf, Westchester County, NY (US);
Jerzy M Zalesinski, Crittenden County, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A simple process for card assembly by Direct Chip Attachment (DCA) uses electrically conductive adhesives. Two methods create the same intermediate wafer product with a layer of insulative thermoplastic and conductive thermoplastic bumps. After sawing or dicing the wafer to form the chips, the chips are adhered to chip carriers with conductive pads which match the conductive thermoplastic bumps, using heat and pressure. Chips may be easily removed and replaced using heat.