A kind of conductive film and preparation method thereof

A technology of conductive film and conductive layer, applied in cable/conductor manufacturing, conductive layer on insulating carrier, circuit, etc., can solve the problems of limited mass production speed, inability to thick coating, touch failure, etc., to prevent conductive layer Short circuit, enhanced protection effect, avoid touch failure effect

Active Publication Date: 2022-06-24
苏州思尔维纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the disadvantages of high cost, poor appearance, and obvious moiré patterns, more and more large-scale touch modules are beginning to use nano-silver wire transparent conductive film as a substitute
The existing preparation process of nano-silver wire transparent conductive film is: precise coating of nano-silver wire on the surface of the film material, precision coating of ultra-thin protective layer on the surface of nano-silver wire, and conductive silver paste on the edge of the film material. Conductive lines appear after laser etching; the current preparation process has the following problems: the middle of the laser-etched lines is only protected by an ultra-thin protective layer, and silver migration is easy to occur, resulting in short circuits and touch failures; Thin-layer protective coating has a general protective effect for aging experiments, but due to the need for laser etching, thick coating protection cannot be carried out; the cost of laser etching process is high, and it will limit the mass production speed to a certain extent, and will affect the price. Expensive silver nanowires create waste

Method used

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  • A kind of conductive film and preparation method thereof
  • A kind of conductive film and preparation method thereof

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preparation example Construction

[0062] Based on the same inventive concept, the present invention also provides the above-mentioned preparation method of the conductive film, comprising the following steps:

[0063] S1. Provide a base material;

[0064] S2, preparing a hydrophobic template array layer on one side of the substrate;

[0065] S3, prepare a conductive layer between adjacent hydrophobic templates on one side of the substrate;

[0066] S4, preparing a protective layer on the side of the hydrophobic template array layer and the conductive layer away from the substrate.

[0067] In some embodiments, preparing the hydrophobic template array layer on one side of the substrate specifically includes:

[0068] Prepare hydrophobic template liquid;

[0069] The hydrophobic template liquid is screen printed on the substrate, that is, the hydrophobic template array is prepared on one side of the substrate.

[0070] column layer;

[0071] Wherein, the hydrophobic template liquid includes the following co...

Embodiment 1

[0106] The embodiment of the present application provides a method for preparing a conductive film, comprising the following steps:

[0107] S1. Provide a PET substrate with a thickness of 125 μm;

[0108] S2. Prepare the hydrophobic template liquid, apply the hydrophobic template liquid on one side of the PET substrate by screen printing, and use 500mJ / cm 2 After curing with UV light, and drying at 80 °C, the hydrophobic template array layer is prepared; the hydrophobic template liquid includes the following components in mass fractions: 60% polyurethane acrylic resin, 1.5% photoinitiator 184 , 1.5% photoinitiator 651, 0.2% tego-5000, 0.6% polyvinylpyrrolidone, 0.2% BYK-054, 36% ethyl acetate;

[0109] S3. Prepare a conductive liquid, coat the conductive liquid on one side of the PET substrate prepared with the hydrophobic template array layer, and then dry it at 80°C to obtain a conductive layer; the conductive liquid includes the following components in mass fractions: 0....

Embodiment 2

[0112] The embodiment of the present application provides a method for preparing a conductive film, comprising the following steps:

[0113] S1. Provide a PET substrate with a thickness of 125 μm;

[0114] S2. Prepare a hydrophobic template liquid, apply the hydrophobic template liquid on one side of the PET substrate by screen printing, bake at 80 °C for 3 min, and then cure at 120 °C for 1 h, to prepare a hydrophobic template array layer; wherein the hydrophobic template liquid includes the following components by mass fraction: 50% acrylic resin, 25% polyisocyanate, 0.5% tego-5000, 0.5% DB310, 24% butanone;

[0115] S3. Prepare a conductive liquid, coat the conductive liquid on one side of the PET substrate prepared with the hydrophobic template array layer, and then dry it at 80°C to obtain a conductive layer; the conductive liquid includes the following components in mass fractions: 5% silver nanowires (30nm in diameter, 50μm in length), 1% monolayer graphene (0.5nm in t...

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Abstract

The invention provides a conductive film and a preparation method thereof. The conductive film comprises: a substrate; a hydrophobic template array layer, a conductive layer and a protective layer; the preparation method of the conductive film is: preparing a hydrophobic template on one side of the substrate An array layer; a conductive layer is prepared on one side of the base material between adjacent hydrophobic templates; a protective layer is prepared on the side of the array layer of the hydrophobic template and the conductive layer away from the base material. The method of the present invention uses the coating of the conductive liquid after the hydrophobic template array layer is blocked, so that the conductive liquid only stays in the place not covered by the hydrophobic template array layer, thereby forming a conductive line, instead of the traditional laser etching process, Since the hydrophobic template array layer can effectively prevent the short circuit of the conductive layer and avoid touch failure; at the same time, because the laser etching process is not used, the thick coating of the protective liquid can be realized, and the thickness of the final protective layer can reach 0.2~ Compared with the laser etching process, the protective effect of the protective layer of the present application is greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of display touch modules, and in particular, to a conductive film and a preparation method thereof. Background technique [0002] Existing large-size display touch modules are mainly divided into two categories, one is a nano-silver wire transparent conductive film, and the other is a metal mesh transparent conductive film. Due to the disadvantages of high cost, poor appearance, and obvious moiré patterns of metal grids, more and more large-size touch modules are now replaced by nano-silver wire transparent conductive films. The preparation process of the existing nano-silver wire transparent conductive film is as follows: precision coating of nano-silver wire on the surface of the film material, precision coating of an ultra-thin protective layer on the surface of the nano-silver wire, and conductive silver paste on the edge of the film material. The current preparation process has the following problems: ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/00
Inventor许玮昶孟祥浩
Owner苏州思尔维纳米科技有限公司