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:
Sep. 30, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Kazuhiko Kurafuchi, Kikuchi-gun, JP;
Hiroshi Seki, Kikuchi-gun, JP;
Mitsuyuki Takada, Amagasaki, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
3241581 ; 324757 ;
Abstract
An evaluation board for evaluating electrical characteristics of an IC package has an electrically insulating support board having signal wire patterns for contact by a measurement probe formed on a first surface and mounting pads for contact with solder balls of an IC package formed on a surface. The signal wire patterns and the mounting pads are electrically connected with each other via through holes formed in the support board. The signal wire patterns are surrounded by and spaced from a ground pattern formed on the first surface.