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:
Jun. 18, 1996
Filed:
Dec. 21, 1994
Applicant:
Inventors:
Robert E Hawke, Burlington, CA;
Atin J Patel, Mississauga, CA;
Assignee:
Gennum Corporation, Burlington, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361706 ; 174 163 ; 174 / ; 174 522 ; 257706 ; 257713 ; 257730 ; 257787 ; 361715 ; 361717 ; 361816 ;
Abstract
A method and a structure for reducing the stresses arising in a hybrid circuit from the interface between the encapsulant and the substrate. An additional layer, preferably of the same material as the substrate, is added to the outside surface of the encapsulant. The purpose of the layer is to provide a second opposing surface to balance and thereby reduce the stress originating from the encapsulant/substrate interface. The second layer is applied prior to the curing of the encapsulant material.