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. 14, 2006
Filed:
Apr. 27, 2004
Yasumori Narizuka, Tokyo, JP;
Mitsuko Itou, Tokyo, JP;
Yoshihide Yamaguchi, Tokyo, JP;
Hiroyuki Tenmei, Tokyo, JP;
Yasumori Narizuka, Tokyo, JP;
Mitsuko Itou, Tokyo, JP;
Yoshihide Yamaguchi, Tokyo, JP;
Hiroyuki Tenmei, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The invention relates to a wiring board comprising a board having an electrode and being coated with an insulation layer with a hole for exposing the electrode; a wiring comprising a Cr or Ti layer, which is connected to the electrode and closely contacts with the insulation layer, and of a Cu layer which is closely contacts with the Cr or Ti layer; a protective film which covers the wiring and is provided with another hole for soldering; and a solder for the outer connection which is mounted in the both holes and brought to diffuse into the Cu layer to produce an alloy, and brought to reach the Cr or Ti layer thereby connecting the solder to the Cr or Ti layer.