US Patent 7598609 - Nanowire z-axis conductive film

http://www.freepatentsonline.com/7598609.html

This patent from Industrial Technology Research Institute teaches a polymer electrical connection film providing high adhesive strength for a fine pitched chip by using parallel nanowires. Claim 1 reads:

1. A polymer-matrix conductive film, comprising:

a polymer-matrix conductive body with unidirectional conductivity, including a plurality of solid conductive nanowires arranged parallel and spaced apart from each other and a polymer material filled in spacings of said solid conductive nanowires,

wherein each end of each said solid conductive nanowire has a barrier layer and a solder layer both of which contained in said polymer-matrix conductive body.