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. 13, 1993
Filed:
Aug. 13, 1992
Applicant:
Inventors:
Anton Doering, Pliezhausen, DE;
Ludger Olbrich, Reutlingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437209 ; 437217 ; 437220 ; 437902 ;
Abstract
A standard lead-frame has an aperture pierced to produce an opening sufficiently large to make room therein for the mounting of a semiconductor circuit chip. A heat sink for the semiconductor circuit chip is fastened into position in or just below the opening. The semiconductor circuit chip is then affixed directly to the heat sink. After wires have been bonded to connect contact areas of the chip to respective parts of the lead frame the unit is encapsulate such a fashion that a major surface of the heat sink protrudes from the encapsulation.