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:
Jan. 13, 2009
Filed:
Jul. 10, 2006
Applicants:
Willmar E. Subido, Garland, TX (US);
Edgardo Hortaleza, Garland, TX (US);
Stuart M. Jacobsen, Frisco, TX (US);
Inventors:
Willmar E. Subido, Garland, TX (US);
Edgardo Hortaleza, Garland, TX (US);
Stuart M. Jacobsen, Frisco, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/322 (2006.01); H01L 21/44 (2006.01); H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides methods and systems for laser assisted wirebonding. One or more conditioning laser pulses are used to prepare a bonding surface for wirebonding by removing impurities such as residues from manufacturing processes, oxides, or irregularities on the bonding surface. Subsequently, a free air ball is brought into contact with the conditioned bonding surface to form a weld.