Patent ID: 8637122

Claim:
A method of manufacturing a transparent conductive film containing carbon nanotubes and a binder, comprising: 1) treating the carbon nanotubes with an acid solution to realize a surface functionalization on the carbon nanotubes by introducing carboxyl group to end portions and surface of the carbon nanotubes, thereby increasing dispersibility of the carbon nanotubes to a solvent, wherein the acid solution is one selected from the group of acids consisting of nitric acid, hydrochloric acid, and sulfuric acid; 2) washing the surface functionalized carbon nanotubes with distilled water to remove the acid solution; 3) filtering the surface functionalized carbon nanotubes; 4) drying the surface functionalized carbon nanotubes; 5) dispersing the surface functionalized carbon nanotubes in the solvent to prepare a carbon nanotube solution, wherein the solvent is either a polar solvent or a nonpolar solvent; 6) mixing a dispersion stabilizer into the carbon nanotube solution to further increase dispersibility of the surface functionalized carbon nanotubes in the solvent; 7) mixing the carbon nanotube solution with the binder, thus preparing a carbon nanotube/binder coating solution; 8) applying the carbon nanotube/binder coating solution on a surface of a substrate; and 9) drying the substrate applied with the carbon nanotube/binder coating solution to remove the solvent and to solidify the binder.