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A kind of nano-silver wire flexible transparent conductive film with low square resistance and excellent bending resistance and preparation method thereof

A technology of transparent conductive film and nano-silver wire, applied to the conductive layer on the insulating carrier, equipment for manufacturing conductive/semiconductive layer, cable/conductor manufacturing, etc., can solve the problems of high equipment requirements and achieve optical performance Good, the effect of improving lap joint efficiency and improving mechanical stability

Active Publication Date: 2021-05-25
合肥微晶材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional methods to improve lap joint efficiency include thermal welding (thermal annealing), optical welding (laser welding, plasma welding), mechanical crimping, etc., but thermal annealing usually requires a temperature above 200°C, and the general flexible base film cannot withstand such High temperature, optical welding and mechanical crimping have higher requirements on equipment

Method used

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  • A kind of nano-silver wire flexible transparent conductive film with low square resistance and excellent bending resistance and preparation method thereof
  • A kind of nano-silver wire flexible transparent conductive film with low square resistance and excellent bending resistance and preparation method thereof
  • A kind of nano-silver wire flexible transparent conductive film with low square resistance and excellent bending resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The composition of each component by mass percentage in the welding fluid used in this embodiment is:

[0047] Copper nitrate 0.01%

[0048] Stabilizer 0.015% (mass ratio of sodium silicate to magnesium sulfate 1:1)

[0049] Hydroxylamine Hydrochloride 0.01%

[0050] Solvent (ethanol / water mass ratio 1:1) 99.965%

[0051] Specific preparation method: add copper nitrate, sodium silicate, magnesium sulfate, and solvent in turn to the dispersion tank, stir at a speed of 500r / min for 50min, then add hydroxylamine hydrochloride, and mechanically stir for 20s to obtain the welding solution.

[0052] This embodiment prepares nano-silver wire flexible transparent conductive film as follows:

[0053] (1) Coat the conductive ink on the surface of the flexible substrate through the dimple coating process, and then dry it in a tunnel furnace at 130°C for 2 minutes to form a conductive layer of silver nanowires;

[0054] (2) Apply the soldering liquid on the surface of the condu...

Embodiment 2

[0057] The composition of each component by mass percentage in the welding fluid used in this embodiment is:

[0058] Silver nitrate 0.01%

[0059] Stabilizer 0.015% (mass ratio of sodium silicate to magnesium sulfate 1:1)

[0060] Hydroxylamine Hydrochloride 0.01%

[0061] Solvent (ethanol to water mass ratio 1:1) 99.965%

[0062] Specific preparation method: add silver nitrate, sodium silicate, magnesium sulfate, and solvent in turn to the dispersion tank, stir at a speed of 500r / min for 50min, then add hydroxylamine hydrochloride, and mechanically stir for 20s to obtain the welding solution.

[0063] This embodiment prepares nano-silver wire flexible transparent conductive film as follows:

[0064] (1) Coat the conductive ink on the surface of the flexible substrate through the dimple coating process, and then dry it in a tunnel furnace at 130°C for 2 minutes to form a conductive layer of silver nanowires;

[0065] (2) The welding liquid is coated on the surface of the ...

Embodiment 3

[0068] The composition of each component by mass percentage in the welding fluid used in this embodiment is:

[0069] Copper nitrate 0.01%

[0070] β-Cyclodextrin 0.01%

[0071] Hydroxylamine Hydrochloride 0.01%

[0072] Solvent (ethanol / water mass ratio 1:1) 99.97%

[0073] Specific preparation method: add copper nitrate, β-cyclodextrin, and solvent in sequence to the dispersion tank, stir at a speed of 500r / min for 50min, then add hydroxylamine hydrochloride, and mechanically stir for 20s to obtain the welding solution.

[0074] This embodiment prepares nano-silver wire flexible transparent conductive film as follows:

[0075] (1) Coat the conductive ink on the surface of the flexible substrate through the dimple coating process, and then dry it in a tunnel furnace at 130°C for 2 minutes to form a conductive layer of silver nanowires;

[0076] (2) The welding liquid is coated on the surface of the conductive layer through a dimple coating process, and then naturally air-...

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Abstract

The invention discloses a nano-silver wire flexible transparent conductive film with low square resistance and excellent bending resistance and a preparation method thereof. Firstly, a nano-silver wire conductive layer is formed on the surface of a flexible substrate, and then the nano-silver wire is formed on the surface of the nano-silver wire through welding liquid. The joints are welded, and finally a UV protective layer is provided on the surface of the conductive layer after welding, so as to obtain. The present invention realizes welding at the nodes of nano silver wires, and the square resistance of the conductive film is reduced by about 20% to 40%, while the optical transmittance and haze do not change significantly, and the prepared conductive film has low square resistance and excellent optical performance , Excellent bending resistance, suitable for large-size displays and flexible displays.

Description

technical field [0001] The invention belongs to the field of flexible transparent conductive films, in particular to a nano-silver wire flexible transparent conductive film with low square resistance and excellent bending resistance and a preparation method thereof. Background technique [0002] As an important functional material, transparent conductive films are widely used in touch screens, sensors, solar cells, light-emitting diodes and other fields. Indium tin oxide (ITO) has been widely used as a transparent conductive electrode for a long time because of its excellent conductivity, light transmission and high stability, but ITO also has some insurmountable shortcomings, such as brittleness, which is difficult to apply to the field of flexible touch, Metal indium resources are in short supply and the price is relatively expensive, and the investment in magnetron sputtering equipment for ITO coating is relatively large. Therefore, in recent years, materials such as con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0026
Inventor 张梓晗吕鹏姚成鹏张运奇聂彪
Owner 合肥微晶材料科技有限公司
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