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:
Dec. 30, 2003
Filed:
Aug. 02, 2002
Applicant:
Inventors:
Li Li, Gilbert, AZ (US);
Treliant Fang, Chandler, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 3/526 ;
U.S. Cl.
CPC ...
B23K 3/526 ;
Abstract
A conductive paste ( ) for use in making conductive bumps ( ) and a method for using the conductive paste to make conductive bumps ( ) on a substrate ( ). The conductive paste ( ) is formed by combining a tin alloy with a flux composition containing an aromatic carboxylic acid fluxing agent and a solvent. The conductive paste ( ) is disposed on underbump metallization layers ( ) and reflowed to form the conductive bumps ( ).