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:
Feb. 19, 1991
Filed:
Feb. 09, 1988
Applicant:
Inventors:
Richard M Brook, Sherman, TX (US);
Thomas H Ramsey, Garland, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ; H01L / ;
U.S. Cl.
CPC ...
228179 ; 22826317 ; 22826318 ; 357 67 ;
Abstract
The disclosure relates to an electrical connection between a bonding pad on a semiconductor chip and a wire wherein the bonding pad is formed of copper doped aluminum and the wire is formed of copper doped gold. The wire has from about 100 to about 10,000 parts per million copper and the pad has from about 5000 to about 50,000 parts per million copper.