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:
Oct. 08, 1996
Filed:
May. 24, 1995
Applicant:
Inventors:
Deepak Mahulikar, Madison, CT (US);
Arvind Parthasarathi, North Branford, CT (US);
Assignee:
Olin Corporation, New Haven, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257666 ; 257736 ; 257750 ; 257762 ; 257763 ; 257765 ; 257766 ; 257767 ;
Abstract
There is disclosed a leadframe for electrically interconnecting a semiconductor device to external circuitry. The leadframe has an electrically conductive substrate that is coated with an oxidation resistant external layer. An intervening layer is disposed between a portion of the substrate and the external layer. The intervening layer is absent from the outer lead ends of the leadframe. Subsequent removal of the external layer from the outer lead ends enables a solder to directly contact the leadframe substrate.