Roll-to-roll preparation device and method for high-performance flexible transparent conductive film

A transparent conductive film, high-performance technology, applied to conductive layers, circuits, electrical components and other directions on insulating carriers, which can solve the problem of difficulty in forming conductive paths, inability to achieve cross-linking of linear conductive fillers, and affecting the electrical properties of flexible transparent conductive films. and other problems to achieve the effect of enhancing contact, improving stability and reducing contact resistance

Active Publication Date: 2016-01-20
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these conventional roll-to-roll coating devices can realize the cross-linking of linear conductive fillers, and it is difficult to form enough effective conductive paths, thus affecting the electrical properties of flexible transparent conductive films based on linear conductive fillers

Method used

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  • Roll-to-roll preparation device and method for high-performance flexible transparent conductive film
  • Roll-to-roll preparation device and method for high-performance flexible transparent conductive film
  • Roll-to-roll preparation device and method for high-performance flexible transparent conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1 Roll-to-roll production of flexible transparent conductive film based on linear conductive filler

[0054] The nano-silver solution with a concentration of 10mg / ml and the HPMC aqueous solution with a concentration of 1wt% are mixed according to a mass ratio of 1:6 to obtain a conductive ink, wherein the average diameter of the nano-silver wire is 35nm and the length is 10um. Such as image 3 with Figure 4 As shown, the transparent and insulating plastic substrate roll material adopts PET (polyethylene terephthalate) roll film with high light transmittance and low haze, and the first PET roll film passes through the unwinding device 1. The roller 11 and the tension roller 12 are sent to the coating device 2, and the coating unit 21 is used to evenly coat one layer of ink comprising a linear conductive filler on the PET film, with a thickness of about 4-24um; The PET film of the ink is sent to the alignment device 3 (the alignment implementation methods u...

Embodiment 2

[0055] The roll-to-roll production of the flexible transparent conductive film of embodiment 2 multilayer conductive layer

[0056] The nano-silver solution with a concentration of 10mg / ml and the HPMC aqueous solution with a concentration of 1wt% are mixed according to a mass ratio of 1:6 to obtain a conductive ink, wherein the average diameter of the nano-silver wire is 35nm and the length is 10um. Such as image 3 with Figure 4 As shown, the transparent and insulating plastic substrate roll material adopts PET (polyethylene terephthalate) roll film with high light transmittance and low haze, and the first PET roll film passes through the unwinding device 1. The roller 11 and the tension roller 12 are sent to the coating device 2, and the coating unit 21 is used to uniformly coat one layer of ink comprising a linear conductive filler on the PET film, with a thickness of about 4-12um; The PET film of the ink is sent to the alignment device 3, and the linear conductive fill...

Embodiment 3

[0057] Embodiment 3 Meyer rod scrape coating alignment method

[0058] Such as Figure 5 As shown, the transparent and insulating plastic substrate roll material adopts a PET (polyethylene terephthalate) roll film with high light transmittance and low haze, and utilizes a coating unit 21 to evenly coat the PET film on the PET film. A layer of ink containing linear conductive fillers is spread, and at the alignment unit 31 , the linear conductive fillers are arranged in an orderly manner by using a Meyer rod (Meyerrod) doctor blade alignment method. Such as Figure 6 As shown, the linear conductive fillers on the PET film are initially randomly distributed, but after scraping with a Meyer rod, these linear conductive fillers show a tendency to align along the scraping direction. Therefore, the orientation of the linear conductive fillers on the PET film can be controlled by changing the direction of the Mayer rod coating. The thickness of the Meyer rod can be 4-24um.

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Abstract

The invention provides a roll-to-roll preparation device for a high-performance flexible transparent conductive film. The preparation device comprises at least one unreeling device, at least one coating device, at least one orientation device, at least one solidification device, at least one composite device and at least one rolling device, wherein the unreeling device is used to dispose a substrate, the coating device coats the substrate with printing oil including a conductive filling material, and the orientation device realizes ordered arrangement of the conductive filling material by making contact with the filling material. According to the invention, the orientation device is introduced in to a traditional roll-to-roll conductive film preparation device, and due to the orientation effect of the orientation device, the conductivity of the film can be substantially improved while the light transmittance of the same is not influenced in the production process.

Description

technical field [0001] The invention belongs to the technical field of transparent conductive thin film devices and preparation methods, and more particularly relates to a roll-to-roll high-performance flexible transparent conductive thin film device and method. Background technique [0002] Definition of transparent conductive film: ①It should have a transmittance of more than 80% in the range of visible light (wavelength 380-760nm). ② High conductivity, with a resistivity lower than 1x10-3Ω·cm. Transparent conductive films are widely used in touch panels, flat panel displays, transparent electrodes of thin film solar cells, luminescent devices, etc. Traditional transparent conductive films are made of indium tin oxide as the main material, but in flat panel display products, in order to meet the application of larger areas and higher image quality, the light transmittance and surface resistance of indium tin oxide Neither can meet the technical requirements of the new ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B5/14
Inventor 杨柏儒许多桦邱景燊
Owner SUN YAT SEN UNIV
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