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:
Aug. 08, 1989
Filed:
Sep. 18, 1987
Applicant:
Inventor:
Mutsuo Tsuji, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361386 ; 174 523 ; 357 81 ; 357 79 ; 361388 ;
Abstract
A chip carrier including a substrate having a plurality of pads formed on the upper and lower surfaces thereof and wirings to connect the pads. The chip carrier also includes an integrated circuit chip having a plurality of leads connected to corresponding ones of the pads. A first metal frame is included which is soldered to the upper surface of the substrate so as to surround the integrated circuit chip. The chip carrier also includes a second metal frame which is seam-welded to the upper end of the first metal frame so as to surround the integrated circuit chip and a plate is soldered to the upper end of the second metal frame so as to cover the integrated circuit chip.