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Disordered co-laminated transparent conductive film and preparation method thereof

A transparent conductive film and transparent technology, which can be used in equipment for manufacturing conductive/semiconducting layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc., and can solve problems such as large difference in line resistance and poor uniformity of resistance distribution

Active Publication Date: 2019-12-06
SHENZHEN HUAKE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above technical problems, the present invention provides a disorderly co-laminated transparent conductive film and its preparation method, which solves the problem of poor TD / MD direction resistance distribution uniformity and large line resistance difference caused by the production of the existing silver nanowire conductive film. question

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  • Disordered co-laminated transparent conductive film and preparation method thereof
  • Disordered co-laminated transparent conductive film and preparation method thereof
  • Disordered co-laminated transparent conductive film and preparation method thereof

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Embodiment approach

[0017] As an embodiment of the present invention, a method for preparing a disordered co-stacked transparent conductive film includes the following steps:

[0018] (1) Preparation of silver nanowire conductive ink;

[0019] (2) Coating and curing silver nanowire conductive ink on a transparent carrier film;

[0020] A vibration device is installed in the coating head area of ​​the coating machine before entering the oven. The transparent carrier film vibrates under the action of the vibration device after the silver nanowire conductive ink is coated and before curing.

[0021] In the present invention, the silver nanowire conductive ink is coated on a transparent carrier film, and a vibration treatment step is added before the drying and curing process. Through the vibration method, the distribution of the silver nanowires in the MD and TD directions is adjusted to make the silver nanowires reach A state of disorderly co-stacking. After the vibration treatment of the transparent cond...

Embodiment 1

[0037] A preparation method of disordered co-stacked transparent conductive film includes the following steps:

[0038] (1) Preparation of silver nanowire conductive ink: mix the silver nanowire dispersion, the ultrapure aqueous solution, the first auxiliary agent, and the second auxiliary agent, and shake them on a shaker at 1000 rpm for 30 minutes.

[0039] (2) Coating and curing the silver nanowire conductive ink on the transparent carrier film: the PET base film is unrolled to the coating head, and the distance between the coating head and the PET film material is adjusted. The silver nanowire conductive ink passes through the diaphragm pump at 1000ml / min The speed is uniformly coated on the PET transparent carrier film. After the coating head is discharged, the vibrator vibrates continuously on the bottom of the transparent carrier film PET at a low frequency of 10 Hz. After passing through the oven, the temperature is raised and lowered by gradient, where the first gradient ...

Embodiment 2

[0041] A preparation method of disordered co-stacked transparent conductive film includes the following steps:

[0042] (1) Preparation of silver nanowire conductive ink: mix the silver nanowire dispersion, the ultrapure aqueous solution, the first auxiliary agent, and the second auxiliary agent, and shake them on a shaker at 1000 rpm for 30 minutes.

[0043] (2) Coating and curing the silver nanowire conductive ink on the transparent carrier film: the PET base film is unrolled to the coating head, and the distance between the coating head and the PET film material is adjusted. The silver nanowire conductive ink passes through the diaphragm pump at 1000ml / min The speed is uniformly coated on the PET transparent carrier film. After the coating head is discharged, the vibrator vibrates continuously on the bottom of the transparent carrier film PET at a low frequency of 10 Hz. After passing through the oven, the temperature is raised and lowered in gradients, where the first gradient...

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Abstract

The invention relates to the technical field of conductive films, in particular to a disordered co-laminated transparent conductive film and a preparation method thereof. Aiming at a problem that in the prior art, the number of silver nanowires in the MD direction is larger than that of silver nanowires in the TD direction due to a fact that the number of the silver nanowires distributed in the advancing direction of the base film is greater than that of the silver nanowires in the vertical direction, the invention provides a preparation method of a disordered co-laminated transparent conductive film. The method comprises the following steps: (1) preparing silver nanowire conductive ink; (2) coating and curing silver nanowire conductive ink on the transparent carrier film, arranging vibrating devices at the positions, in front of an oven, of a film material outlet coating head area of the coating machine, and enabling the transparent carrier film to vibrate under the action of the vibrating devices after silver nanowire conductive ink is coated and before the silver nanowire conductive ink is cured. Through vibration after coating and before curing, the distribution of the silver nanowires in the MD direction and the TD direction is adjusted, so that the silver nanowires reach a disordered co-stacked state.

Description

Technical field [0001] The invention relates to the technical field of conductive films, in particular to a disordered co-stacked transparent conductive film and a preparation method thereof. Background technique [0002] Transparent conductive film is a kind of thin film with conductive function. It is widely used in liquid crystal displays, flexible circuit boards, solar cells, optoelectronics and various optical fields because of its advantages of light weight, deformability, and non-breakability. At present, the most widely used transparent conductive film is prepared on hard substrates such as PET, PMMA, TAC, COP, CPI, glass, ceramics, etc. The most widely used transparent conductive films are ITO conductive film, graphene conductive film, silver nanowire conductive film, copper metal grid conductive film, carbon nanotube, polymer organic polymer conductive film, etc. Among them, the silver nanowire conductive film is widely used in various large-size touch screens, foldabl...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0016H01B13/0026
Inventor 靳世东曾西平王海波潘莹莹李晓明
Owner SHENZHEN HUAKE COMM TECH CO LTD