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:
Dec. 21, 2004

Filed:

Mar. 28, 2001
Applicant:
Inventors:

Peter J. Sinkunas, Canton, MI (US);

Zhong-You Shi, Ann Arbor, MI (US);

Lawrence L. Bullock, late of Detroit, MI (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 2/600 ; B23K 2/608 ; B23K 3/100 ; B23K 3/102 ;
U.S. Cl.
CPC ...
B23K 2/600 ; B23K 2/608 ; B23K 3/100 ; B23K 3/102 ;
Abstract

A method to solder flex circuits by diode laser. First and second flex circuits composed of polymer flex substrate are provided. Each flex circuit has a top and a bottom side and at least one contact trace embedded in its surface. An area of solder is provided on the contact trace of at least one of the flex circuits and the flex circuits are positioned so that the contact traces of each flex circuit are substantially aligned. A laser beam is positioned to heat the contact trace to melt the solder and fuse the contacts.


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