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:
Jul. 04, 2006
Filed:
Oct. 08, 2003
Benjamin J. Holmes, Norcross, GA (US);
Randall P. Chambers, Lawrenceville, GA (US);
Benjamin J. Holmes, Norcross, GA (US);
Randall P. Chambers, Lawrenceville, GA (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A flexible circuit having improved tear resistance is provided. A flexible circuit, made of polyimide film, includes at least one extension which needs to be folded. To prevent tearing, an annular piece of metal, like an exposed copper pad for example, is placed at the apex of the bend angle. A second metal is then deposited atop the annular piece of metal, thereby reinforcing the annular piece of metal. The reinforced annular piece of metal helps to prevent the flexible circuit from tearing when shearing forces are applied to the extension. Experimental results have shown that the invention provides as much as a 285% increase in tear resistance when compared to prior art flexible circuits.