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.

Date of Patent:
Jul. 06, 2004

Filed:

Mar. 08, 2001
Applicant:
Inventors:

Norihiko Takada, Kanazawa, JP;

Hisamitsu Kamenaga, Ishikawa-ken, JP;

Shingo Iwasa, Matto, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 4/142 ;
U.S. Cl.
CPC ...
H01L 4/142 ;
Abstract

A wire bonding method for ultrasonically joining two connecting electrodes with a wire includes the steps of forming at least one of the connecting electrodes with tantalum and forming the wire of one of a metallic wire having a fracture load of about 21 g or greater and a metallic wire having a fracture stress of 290 N/mm or greater.


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