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:
Sep. 01, 1998

Filed:

Dec. 10, 1996
Applicant:
Inventors:

Frank J Juskey, Coral Springs, FL (US);

Douglas W Hendricks, Gulfstream, FL (US);

Sally A Stallings, Lake Worth, FL (US);

Assignee:

Motorola, Inc., Schaumburg, IL (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B44C / ; C23F / ; H05K / ;
U.S. Cl.
CPC ...
216 16 ; 216 41 ; 216 44 ; 216 54 ; 216 78 ; 216 17 ; 430313 ; 430318 ; 430311 ; 174254 ; 174262 ; 174261 ;
Abstract

A process (200) for fabricating a flex circuit (708, 806, 812, 818 or 824) using a fabrication process without the use of a photomask includes the steps of generating (412) an electronic image (702 or 802) of circuit traces (704 or 804) representing at least a single-sided flex circuit, and selectively thermal transferring (506 or 606) a resin to either a conductively clad or non-conductive flexible substrate (304) under the control of the electronic image (702 or 802) to form either an etch resist or a conductor which defines the circuit traces (704 or 804). The conductively clad flexible substrate (304) is etched to form the circuit traces (704 or 804) of the flex circuit defined by the etch resist, after which the etch resist is removed.


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