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:
Apr. 02, 2002
Filed:
Mar. 21, 2000
Donald C. Abbott, Norton, MA (US);
Raymond A. Frechette, North Providence, RI (US);
Robert Sabo, Smithfield, RI (US);
Steve Smith, Lincoln, RI (US);
Christopher Sullivan, Rochester, MA (US);
David West, Pembroke, MA (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A double sided electrical connection flexible circuit particularly useful as a substrate for an area array integrated package, and the method of fabricating the structure is described. A circuit having interconnections on one surface and solder ball contact pads on the second surface are interconnected by copper plated from a single surface in order to avoid entrapment of air pockets. In one embodiment, the conductive vias are formed from a copper film which extends from the solder ball contact pads, which may be indented, providing a well for solder balls in the contact pad.