Graphene enhanced and engineered materials for membrane touch switch and other flexible electronic structures

A multilayered structure comprising:

• a) a flexible substrate, wherein the flexible substrate comprises a polyester or polycarbonate based film;
• b) a layer comprising a metal ink on the flexible substrate, wherein the metal ink comprises a conductive filler selected from the group consisting of a metal filler selected from the group consisting of micron-sized silver flakes, nano-silver, micron-sized silver coated copper flakes, micron-sized silver coated copper-nickel-zinc flakes, and combinations of one or more of the foregoing, organo-silver compounds, and combinations of one or more of the foregoing;
• c) a layer comprising a graphene ink on the layer comprising a metal ink;
• and
• d) a layer comprising a dielectric ink on the layer comprising a graphene ink
• wherein the graphene ink comprises:
• (i) at least one polymeric binder, the polymeric binder comprising from about 25% to about 100% by weight of thermoplastic resins comprising homo-polymers or copolymers, and at least one of about 1% to about 50% by weight polyester resin, about 1% to about 20% by weight phenoxy resin, and about 1% to about 50% by weight thermoset network forming resins;
• (ii) at least one solvent;
• and
• (iii) graphene.