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. 14, 2015
Filed:
Jul. 09, 2013
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventor:
Donald C. Abbott, Chatley, MA (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/48 (2006.01); H01L 21/64 (2006.01); H01L 23/495 (2006.01);
U.S. Cl.
CPC ...
H01L 23/49503 (2013.01); H01L 21/4821 (2013.01); H01L 23/49541 (2013.01); H01L 23/49548 (2013.01); H01L 23/49565 (2013.01); H01L 21/64 (2013.01); H01L 23/49575 (2013.01); H01L 2924/0002 (2013.01);
Abstract
A method for fabricating a leadframe strip is disclosed. A leadframe pattern is formed from flat sheet of base metal. Additional metal layers are plated on patterned tape of base metal and the leadframe surface is roughed. A first set of leadframe areas is planished. A second set of leadframe areas are offsetted and the tape is cut into strips.