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A method for making a transparent conductive film of nano-silver wires with customizable patterns

A technology of transparent conductive film and nano-silver wire, which is applied in the direction of equipment, circuit, and electrical components for manufacturing conductive/semiconductive layers, which can solve the problems of complex processing process, affecting yield, and limited flexibility.

Active Publication Date: 2021-03-09
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

Since the nano-silver wire itself has good flexibility, the flexibility of the conductive layer can fully meet any situation through modification, but the flexibility of the film substrate itself limits the flexibility of the nano-silver wire conductive film
[0004] In addition, the current commercially available silver nanowire transparent conductive film is a complete unpatterned roll material, which requires cutting, aging, and patterning processes when used. The process is complicated and will lead to a certain decrease in product yield.
[0005] In view of the limited flexibility of the silver nano wire transparent conductive film, the complicated processing process and the impact on the yield rate, etc., there is an urgent need to develop a non-restricted base film flexibility, which can be applied to any flexible display field and is easy to use. , flexible silver nano wire transparent conductive film with high yield

Method used

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  • A method for making a transparent conductive film of nano-silver wires with customizable patterns
  • A method for making a transparent conductive film of nano-silver wires with customizable patterns
  • A method for making a transparent conductive film of nano-silver wires with customizable patterns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1, preparation of bonding glue and flexible transparent optical glue

[0074] The preparation method of the polyurethane acrylic prepolymer used in the bonding adhesive and the flexible transparent optical adhesive of this embodiment is as follows:

[0075] (a) Dehydration of raw materials: PEG-1000, polyether triol polyoxypropylene triol-600, 1,6-hexamethylene diisocyanate and hydroxyethyl acrylate are subjected to high-temperature vacuum dehydration treatment. The treatment conditions are: The temperature is 100°C, the vacuum degree is 0.1MPa, and the time is 2h.

[0076] (b) Reaction of polyol and isocyanate: in N 2 Under a protective environment, add 5.5 mol of the above-mentioned dehydrated 1,6-hexamethylene diisocyanate into the flask, mechanically stir at a speed of 500 r / min, while slowly heating to 60°C, and then add 3.64 mol of the dehydrated The mixed solution of PEG-1000 and 0.91mol polyether trihydric alcohol polyoxypropylene triol-600 was adde...

Embodiment 2

[0084] The preparation method of the coating liquid with UV irradiation viscosity-reducing function used in this embodiment is: under dust-free and yellow light environment, 972g solvent (ethyl acetate, butanol and cyclohexanone by mass ratio 1:1:1 mixture ), 20g UV resin (WDS-9500 and DSM2421 mixed at a mass ratio of 1:1), 4g UV monomer (trimethylolpropane triacrylate), and 2g hydroxyethyl acrylate were added to the dispersion tank in turn, at 1000r / min Speed ​​mechanical stirring for 30min; then add 1g of photoinitiator (photoinitiator 184) and 1g of crosslinking agent (1,6-hexamethylene diisocyanate) in sequence, and continue to stir for 10min to obtain a UV-viscosity-reducing Coating solution.

[0085] Such as figure 1 As shown, the present embodiment makes the nano-silver wire transparent conductive film with desired pattern according to the following steps:

[0086] Step 1, setting the nano-silver wire transparent conductive film based on the PET base film

[0087] 11...

Embodiment 3

[0098] In this embodiment, the nano-silver wire transparent conductive film with the required pattern is produced by the same method as in Example 2, the difference is only that the preparation method of the coating liquid with UV irradiation viscosity-reducing function used is: under dust-free and yellow light environment, 972g solvent (mixture of ethyl acetate, butanol and cyclohexanone in mass ratio 1:1:1), 20g UV resin (CN9013NS and CN9010 in mass ratio of 1:1), 4g UV monomer (trimethylol Propane triacrylate), 2g hydroxyethyl acrylate were added into the dispersing cylinder in turn, and mechanically stirred at a speed of 1000r / min for 30min; then 1g photoinitiator (photoinitiator 184) and 1g crosslinking agent (1,6-hexaethylene Methyl diisocyanate), and continue to stir for 10 minutes to obtain a coating liquid with UV irradiation viscosity-reducing function.

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Abstract

The invention discloses a manufacturing method of a nano silver wire transparent conductive film with customizable patterns. Patterning of a nano silver nanowire transparent conductive film is realized by utilizing the change of stripping force between coating liquid with a UV irradiation viscosity reduction function and a base film before and after UV irradiation and combining an adhesive suitable for the nano silver nanowire conductive film and a flexible transparent optical adhesive, and the patterned nano silver nanowire transparent conductive film taking the flexible transparent optical adhesive as a substrate is obtained. The process is simple, the product yield is higher, and the obtained conductive film has better optical performance and flexibility.

Description

technical field [0001] The invention belongs to the display field, and in particular relates to a method for manufacturing a nano-silver wire transparent conductive film with customizable patterns. Background technique [0002] With the development of electronic display to large size and flexibility, the requirements for the flexibility of conductive films are getting higher and higher. At present, the ITO transparent conductive film with the largest amount in the market has the problems of high square resistance and poor flexibility, and is not suitable for large-size displays and flexible displays. The nano-silver wire in the new material has become the best substitute material for ITO due to its excellent comprehensive properties such as optical properties, good flexibility, and low square resistance. [0003] The square resistance of the nano-silver wire transparent conductive film can be made very low, which is completely suitable for large-scale display. However, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00
CPCH01B13/0026
Inventor 张梓晗吕鹏杨锦张运奇
Owner 合肥微晶材料科技有限公司
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