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:
Feb. 11, 1986
Filed:
Aug. 08, 1984
Applicant:
Inventor:
Shoji Nakakita, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428131 ; 427 86 ; 427 89 ; 427 97 ; 428132 ; 428133 ; 428458 ; 428901 ;
Abstract
Good electrical connection between adjacent metal layers in a multi-layered substrate is provided by embedding a conductive material in via-holes in the insulator which separates the adjacent metal layers. This conductive material can be a low temperature sintered metal such as gold, or a conductive organic paste. The presence of the conductive material avoids problems associated with photoresist material that adheres to the side walls of the via-holes during the metallization process.