Tuesday, January 17, 2012

US Patent 8094247 - Nanowire-based touch screen


Metal and metal oxide nanowires are being developed as a transparent conductive electrode material for flexible displays. This patent from Cambrios Technologies suggests metal nanowires to form the conductive layers in touch panel displays. Claim 4 reads:

4. A multi-layer structure comprising:

a substrate;

a conductive layer formed on the substrate, wherein the conductive layer comprises a first plurality of metallic nanowires, the first plurality of metallic nanowires reaching an electrical percolation level; and

an overcoat formed on the conductive layer, the overcoat incorporating a second plurality of conductive particles, the second plurality of conductive particles being below the electrical percolation level, and wherein the overcoat is surface conductive.