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Flexible copper mesh-based touch screen and preparation method thereof

A technology of copper grid and touch screen, which is applied in the direction of instruments, electrical digital data processing, and input/output process of data processing, etc. It can solve the problems of high reflectivity, increased cost of touch screen, and increased weight of touch screen, etc., and achieve high transmittance , the effect of strong environmental resistance

Active Publication Date: 2017-02-15
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At the same time, PET itself has a high reflectivity in the visible light region. After being made into a touch screen, the graphic fidelity of the touch screen is significantly reduced. reduces the weight of the touch screen and reduces its flexibility of the touch screen

Method used

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  • Flexible copper mesh-based touch screen and preparation method thereof
  • Flexible copper mesh-based touch screen and preparation method thereof
  • Flexible copper mesh-based touch screen and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0027] like figure 1 As shown, the figure shows an embodiment of a flexible copper grid-based touch screen, the composite film includes optical glue 1, flexible transparent polyethylene terephthalate PET substrate film 2, anti-reflection and anti-reflection layers 13 and 14 and copper grid conductive layer 15.

[0028]The transparent film substrate 2 is composed of flexible transparent polyethylene terephthalate and its double-sided UV-cured polyacrylate hard coating. Preferably, the thickness of the flexible transparent substrate 2 is 50 microns, and may also be 125 microns. The UV-cured polyacrylate hardening coating is evenly coated on both sides of the flexible transparent PET substrate by a traditional roll-to-roll coating method, so as to improve the strength, hardness and durability of the flexible transparent substrate 2 .

[0029] The anti-reflection and anti-reflection layers 13 and 14 are multi-layer stacked structures covering the upper and lower surfaces of the ...

Embodiment 2

[0035] like figure 2 As shown, this figure shows an embodiment of a flexible copper grid base touch screen, and the composite film includes optical glue 1, flexible transparent polyethylene terephthalate PET substrate film 2, anti-reflection and anti-reflection layers 23 and 24 and copper grid conductive layer 25.

[0036] The transparent film substrate 2 is composed of flexible transparent polyethylene terephthalate and its double-sided UV-cured polyacrylate hard coating. Preferably, the thickness of the flexible transparent substrate 2 is 50 microns, and may also be 125 microns. The UV-cured polyacrylate hardening coating is evenly coated on both sides of the flexible transparent PET substrate by a traditional roll-to-roll coating method, so as to improve the strength, hardness and durability of the flexible transparent substrate 2 .

[0037] The anti-reflection and anti-reflection layers (23 and 24) are multi-layer stacked structures, covering the upper and lower surface...

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Abstract

The invention relates to the field of optical films, and relates to a flexible copper mesh-based touch screen and a preparation method. The flexible copper mesh-based touch screen comprises a flexible copper mesh-based conductive film and an optical cement; the flexible copper mesh-based conductive film comprises a flexible transparent substrate, anti-reflection layers, and a copper mesh conductive layer; the anti-reflection layers are sputtered on an upper surface and a lower surface of a PET substrate, the transmittance of the substrate is improved, the reflected light on the surface is reduced, and then a copper metal conductive composite layer is sputtered on the surface of the anti-reflection layer at one side; the copper metal conductive layer is etched by use of a photolithographic process, thereby preparing a transparent conductive film with high transmittance and low resistance; the optical cement is used for adhering two transparent conductive films with the same structure to enable the copper mesh layer to contact with the optical cement, thereby obtaining an electrode structure for the touch screen. The visible light transmittance of the touch screen disclosed by the invention is higher than 98%, the surface sheet resistance is lower than 6 omega / sq, the chromatic value b* is less than 0.3, the reflectivity of the copper film surface is lower than 4%, and the reflectivity of the copper film back (PET film uncoated film) is less than 5%. And the reflectivity of the touch screen surface is less than 0.5%.

Description

technical field [0001] The invention relates to the field of optical thin films, and relates to a flexible copper grid-based touch screen and a preparation method. Background technique [0002] Transparent conductive films are an essential component in the manufacture of devices such as flat-screen TVs, touch screens, smart window panes, light-emitting diodes, and photovoltaic cells. In recent years, with the development of information (such as touch display), energy (such as photovoltaics, smart window glass) and other industries, people's demand for transparent conductive films has increased sharply, and among transparent conductive films, the most widely used The second type is tin-doped indium oxide thin film, commonly known as ITO thin film. As we all know, the content of indium in the earth's crust is rare (about 0.05ppm), and it is difficult to purify. With the significant increase in the amount of ITO thin film, its content is getting rarer and rarer, resulting in a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/044G06F2203/04103
Inventor 刘宏燕颜悦刘伟明望咏林伍建华
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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