NANOSTRUCTURE TRANSPARENT CONDUCTORS HAVING HIGH THERMAL STABILITY FOR ESD PROTECTION
Disclosed herein are transparent conductors having high thermal capacity and improved protection against electrostatic discharge.
1 . A transparent conductive film, comprising:
a substrate;
a conductive layer disposed on the substrate, the conductive layer having a plurality of interconnecting conductive elements optionally embedded in a binder; and
an overcoat layer overlying the conductive layer, wherein at least one of the binder and the overcoat is a thermally stable material.
2 . The transparent conductive film of claim 1 wherein the binder is polyimide or polybenzoxazoles.
3 . The transparent conductive film of claim 1 wherein the overcoat is polyimide or polybenzoxazoles.
4 . The transparent conductive film of claim 1 wherein the overcoat is a spin-on dielectric layer.
5 . The transparent conductive film of claim 4 wherein the spin-on dielectric layer comprises a network of polymers having moieties of —Si—O—, —Si—NH—, —Si—C—, or a combination thereof.
6 . The transparent conductive film of claim 4 wherein the overcoat is a spin-on glass.
7 . The transparent conductive film of claim 1 wherein the thermally stable material is capable of maintaining its structural integrity when heated to above 400° C. for at least 1 minute.
8 . The transparent conductive film of claim 1 wherein the thermally stable material is capable of maintaining its structural integrity when heated up to 1000° C. for at least 100 microseconds.
9 . The transparent conductive film of claim 1 wherein the overcoat layer comprises a first plurality of high heat-capacity nanoparticles.
10 . The transparent conductive film of claim 9 , further comprising a hard coating layer interposed between the substrate and the conductive layer, the hard coat layer having a second plurality of high heat-capacity nanoparticles.
11 . The transparent conductive film of claim 9 wherein the high heat-capacity nanoparticles are oxides of silicon, titanium, zinc, zirconium, aluminum, and cerium.
12 . The transparent conductive film of claim 9 wherein the high heat-capacity nanoparticles are carbon nanotubes.
13 . The transparent conductive film of claim 1 wherein the conductive elements are a plurality of conductive nanostructures.
14 . The transparent conductive film of claim 13 wherein the conductive nanostructures are silver nanowires.
15 . The transparent conductive film of claim 1 wherein the conductive elements form a conductive mesh.
16 . The transparent conductive film of claim 15 wherein the conductive mesh is formed of metallic paste or conductive wires.
17 . The transparent conductive film of claim 1 wherein the conductive layer comprises a plurality of conductive nanostructures electrically coupled to a conductive mesh.