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. 01, 1997
Filed:
Mar. 31, 1995
Applicant:
Inventors:
Assignee:
SGS-Thomson Microelectronics, S.R.L., Agrate Brianza Mi, IT;
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361723 ; 257675 ; 361707 ;
Abstract
A leadframe for electronic semiconductor devices incorporates one or two metal bars fastened to a heat dissipator by electroconductive means. Each bar has a metallized area for the electric connection, by means of a bonding wire, with a semiconductor chip placed on the dissipator. According to the present invention, the metallized areas are lowered in relation to the upper surface of the metal bar, so that lead frames can be stacked, during packing and transportation, directly on each other without danger of damaging the metallized areas.