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:
Aug. 22, 2000
Filed:
Feb. 05, 1998
Steven A Cordes, Cortlandt Manor, NY (US);
Peter Alfred Gruber, Mohegan Lake, NY (US);
Egon Max Kummer, Croton on Hudson, NY (US);
Stephen Roux, Purdys, NY (US);
Carlos Juan Sambucetti, Croton on Hudson, NY (US);
James Louis Speidell, Poughquag, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A precise volume, precisely registerable carrier is provided for use with injection molding for producing integrated circuit bump contacts in the 'flip chip' technology. A hemispherical cavity is produced by etching through and undercutting a registered opening into a transparent carrier. The hemispherical cavity has related specific volume and visible peripheral shape that permits simple optical quality control when the injection molding operation has filled the cavity and simple optical registration for fusing to the pads on the integrated circuit.