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:
May. 28, 1996
Filed:
Sep. 23, 1994
Applicant:
Inventors:
Naoyuki Okamoto, Nagoya, JP;
Kazunori Miura, Nagoya, JP;
Assignee:
NGK Spark Plug Co., Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257703 ; 257701 ; 257779 ; 257766 ;
Abstract
In a ceramic base and metallic member assembly, a metallic member such as an input/output terminal is joined by solder to a ceramic base substrate by way of a stress relief layer. The ceramic base substrate has a metallized layer on which the stress relief layer is formed by plating. The stress relief layer is made of soft metal such as copper and has the thickness equal to or larger than 25 .mu.m. In one embodiment, a barrier made of glass or an organic insulating material for preventing outflow of solder is formed on a peripheral portion of a joining surface of the stress relief layer.