Flexible conductive film

Abstract

The invention provides a flexible conductive film which comprises a flexible base layer, a flexible conductive layer and a flexible water vapor barrier layer. The flexible base layer, the flexible conductive layer and the flexible water vapor barrier layer are laminated to each other and are combined to form the flexible conductive film. The flexible conductive film is not easy to break, has the advantages of scrape resistance, scratch resistance, bending folding resistance, high light transmittance, low haze, water vapor resistance and the like, can be widely used in a variety of optoelectronic devices, and especially optoelectronic devices with flexible demand and waterproof demand.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a flexible conductive film. Background technique [0002] Transparent conductive films have the advantages of low resistance and high transmittance. In recent years, they have been widely used in the fields of material science, energy, information, and microelectronics industries. Transparent conductive films have also become the focus of industry research. [0003] In the prior art, the preparation of nano-silver wire conductive film usually requires repeated steps such as soaking nano-silver wire and hot-pressing process. The process is cumbersome, and after each repeated operation, an optical interface will be formed on the joint surface. It will greatly reduce the light transmittance of the conductive film. Chinese patent document CN102214499 discloses a method for making a transparent conductive film. The steps include: coating a hydrophilic transparent resin on a soft tra...

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Problems solved by technology

[0003] In the prior art, the preparation of nano-silver wire conductive film usually requires repeated steps such as soaking nano-silver wire and hot-pressing process. The process is cumbersome, and after each repeated operation, an optical interface will be formed on the joint surface. Will greatly reduce the light transmittance of the conductive film

Chinese patent document CN102214499 discloses a method for making a transparent conductive film. The steps include: coating a hydrophilic transparent resin on a soft transparent substrate, drying the hydrophilic transparent resin, soaking the dried hydrophilic transparent Resin in the dispersion liquid of nano-silver wire, hot-press the hydrophilic transparent resin, let the nano-silver wire enter the hydrophilic transparent resin, and repeat the soaking and hot-pressing steps several times, the conductive film produced by this method , low light transmittance

[0004] There is another method in the prior art, which is to coat the nano-silver wire slurry on the PET substrate. The transparent conductive film made by this method lacks surface protection, and the nano-silver wire layer is easy to fall off, and the transparent conductive film The surface is easy to be scratched. The base material of the nano-silver wire conductive film is a hardened film similar to the ITO conductive film, that is, the nano-silver wire is coated on the hardened film and then dried. This method is different from ITO sputtering, but The selection of substrates is similar, so there are a series of problems such as low light transmittance, high haze, low adhesion, poor flexibility, and low production efficiency.

[0005] Conventional transparent conductive films can realize flat panel touch, but neither the substrate nor the conductive layer can be bent, and there is no water vapor barrier function, which limits the preparation of flexible touch screens.

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