Low-haze transparent conductive film and preparation method thereof

Abstract

The invention provides a low-haze transparent conductive film and a preparation method thereof. The low-haze transparent conductive film comprises a transparent substrate layer, wherein the transparent substrate layer is coated with a super hydrophilic coating formed by a super hydrophilic coating material, the super hydrophilic layer is coated with a transparent conductive layer formed by a conductive ink composition, and the wetting angle of water at the surface of the super hydrophilic coating is less than or equal to 5 degrees. After the super hydrophilic coating is coated, the light transmittance of the substrate is improved, the haze is reduced, an adhesive force between the transparent conductive layer and the substrate is enhanced, and the oxygen permeability of the transparent substrate is also reduced at the same time. By adopting the technical scheme provided by the invention, the total haze of the ultimately acquired transparent conductive film is reduced by 40% compared with that before super hydrophilic processing under the condition of keeping the conductivity to be unchanged, the light transmittance is improved by 2-5%, the adhesive force is also obviously improved, and the appearance is more transparent.

Description

technical field [0001] The invention belongs to the field of transparent conductive films, and in particular relates to a low-haze transparent conductive film and a preparation method thereof. Background technique [0002] Transparent conductive films can be used in touch screens, display devices, electromagnetic shielding and other fields. Due to the limited reserves of the rare metal indium (In) in the traditional ITO transparent conductive film and its poor bending resistance on flexible substrates, ITO alternative materials have attracted more and more attention. Among all ITO substitute materials, under the same conductivity, the conductive film composed of metal nanowire network has the highest total light transmittance, and the light transmittance at 550nm at 100Ω / □ can not be lower than 99% (excluding the substrate ), much higher than graphene (less than 90%) [1], carbon nanotubes (less than 80%) [2], conductive polymers (less than 80%) [3]. However, the network st...

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Problems solved by technology

Patent US20140170407 mentions the use of mercaptotriazole or mercaptotetrazole as a corrosion inhibitor for silver nanowires, but mercapto groups cannot coexist with nanowires for a long time, so that this corrosion inhibitor can only be used in the protective layer and cannot be used for conductive Therefore, the selection of corrosion inhibitors and how to apply them more effectively to transparent conductive film materials based on metal nanowires need further research in order to achieve more significant technical effects.

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