Preparation method of metal grid induction film

A technology of metal mesh and induction film, which is used in devices for coating liquids on surfaces, pretreatment surfaces, coatings, etc., can solve problems such as defects, poor quality, easy functions and performances, etc., so as to improve the production quality of products. efficiency, reducing void defects, and improving the ability to wet the photoresist

Active Publication Date: 2022-02-18
江苏软讯科技有限公司
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  • Description
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Problems solved by technology

[0006] In order to solve the technical problems of functional and performance defects due to poor coating and screen printing quality, a method for preparing a metal grid induction film is provided

Method used

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  • Preparation method of metal grid induction film
  • Preparation method of metal grid induction film

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) Take the PET base film, and corona treat it: power 2KW, output voltage is 10KV, and the surface energy of the PET base film can reach 46 dynes, and the upper and lower surfaces of the base film are coated with a negative substance containing a photoinitiator. A photoresist with a thickness of 500nm is formed after prebaking at 120° C. for 5 minutes; a negative photoresist containing a photoinitiator includes polyisoprene, solvent xylene and photoinitiator 1-(6 -O-chlorobenzoyl-9-ethylcarbazole)-1-ethanone oxime ethyl ester, so that the viscosity after deployment is 480mPa·s, and the photoinitiator consumption is 2% of the polyisoprene quality;

[0030] (2) Corona treatment is carried out to described photoresist layer: after power 2KW, output voltage are 10KV to make photoresist layer surface can reach 42 dyne, on the surface coating catalyst solution of described photoresist layer, in After drying at 80°C for 20s, a 40nm-thick catalyst layer is formed; wherein the ...

Embodiment 2

[0037] The preparation process of this example is the same as that of Example 1, except that after the catalyst layer is formed in step (2), the biaxially stretched BOPP film is heated by double-sided hot-pressed rubber rolls at 100°C, at a speed of 10m / min, with two rolls Heat paste it on the catalyst layer under the pressure of 3KG. After heat paste, the surface hardness reaches 5b / 500g or more, which can protect the surface of the catalyst layer from water resistance, insulation, scratch resistance, and friction resistance. The intermediate products after the aforementioned operations are protected from damage during the transfer operation;

[0038] After the exposure treatment in step (3) and before the development treatment, the BOPP film needs to be peeled off at room temperature.

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Abstract

The invention relates to a preparation method of a metal grid induction film, which comprises the following steps of: (1) performing corona treatment on a base film to enable the surface of the base film to reach at least 42 dynes, coating photoresist on the upper surface and the lower surface of the base film, and pre-baking to form a photoresist layer; (2) performing corona treatment on the photoresist layer to enable the surface of the photoresist layer to reach at least 40 dynes, coating a catalyst solution on the surface of the photoresist layer, and forming a catalyst layer after film formation; and (3) after double-sided exposure treatment, developing treatment is carried out to obtain a grid pattern, then copper plating treatment is carried out to form a metal grid layer, blackening treatment is carried out to form a metal grid blackening layer, and finally, protective glue is coated to form a protective glue layer, so that the metal grid induction film is prepared. According to the method, the function and performance defects caused by the bad risk of wire breakage of the metal grid can be reduced, and the production yield of products is improved.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a method for preparing a metal grid sensing film Background technique [0002] High-performance transparent electrodes are essential for the application of many optoelectronic devices, such as touch screens, wearable devices, foldable devices, smart homes, etc. At present, transparent conductive electrodes generally use metal oxides, such as ITO thin films. Due to the limited reserves of some key metal elements such as indium in oxide electrodes and the popularity of products such as liquid crystal displays and touch screens, the price of indium has risen sharply. In addition, ITO transparent electrodes lack flexibility, are not easy to bend, and have poor chemical stability, so they are not suitable for application in the field of flexible products, such as the new consumer electronics industry with foldable flexible display and touch integration. [0003] Alternative te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/04B05D7/24B05D3/14
CPCB05D7/04B05D7/24B05D3/14Y02E60/10
Inventor 谢才兴李奎邱昭飞冯博文
Owner 江苏软讯科技有限公司
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