Patent Number: 6,486,408

Title: Flexible circuit using discrete wiring

Abstract: A system and method is described which provides for electrical signaltransmission and a secure mechanical attachment in a flexible circuitassembly. The inventive mechanism combines the electrical features ofdiscrete wiring with the mechanical features of etched pads connected toplated vias on flex circuits in order to achieve robustness in both themechanical and electrical properties. A discrete wire is preferablysecurely bonded to a conductive pad which pad is then securely attached toa plated via. In this manner, the sequence of connections is mademechanically secure by either ultrasonically bonding or welding thediscrete wire to the pad and employing the traditionally robust connectionbetween the pad and the via. The arrangement achieves high qualityelectrical signal transmission by employing discrete wiring for signaltransmission along any path of significant length.

Inventors: Morris; Terrel L. (Garland, TX)


International Classification: H05K 1/11 (20060101); H05K 3/10 (20060101); H05K 3/42 (20060101); H05K 1/00 (20060101); H05K 001/00 (); H05K 001/11 ()

Expiration Date: 11/22015