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:
Nov. 08, 1988
Filed:
Nov. 23, 1987
Applicant:
Inventor:
Martin A Kalfus, Scottsdale, AZ (US);
Assignee:
Motorola Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437209 ; 29741 ; 29827 ; 29841 ; 26427213 ; 357 81 ; 437211 ;
Abstract
A method is described for coupling the leadframe of a thermogenetic semiconductor device to a heatsink. This method consists of screening a first layer of thermally conductive epoxy on the heatsink. The first layer is cured and a second layer is screened on the first layer. The leadframe is then deposited on the second layer and the second layer is cured. The device then goes to encapsulation and final processing.