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Touch screen structure capable of reducing silver migration probability

A touch screen, silver migration technology, applied in the input/output process of data processing, instruments, electrical digital data processing and other directions, can solve the problems of easy occurrence of silver ion migration, silver migration, and ITO cannot support it.

Inactive Publication Date: 2019-08-06
WUHU LUNFENG ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nano-silver conductive film material is evenly coated on the transparent film material in the form of a nano-scale silver wire mesh to form a conductive film material; for the touch screen, the touch pattern we need is etched on the surface of the conductive film. Form the required induction magnetic field; for products made of nano-silver film, if the environment is humid, silver migration will easily occur during power-on work, resulting in poor function of the touch screen
At present, nano-silver film manufacturers overcome this problem by adjusting their nano-silver coating formula, trying to cure nano-silver on the surface of the film as much as possible, but the migration of silver ions is still prone to problems due to the influence of the use environment.
This is also a market where nano-silver film has a cost advantage but cannot replace ITO; however, the square resistance of ITO film cannot be as low as nano-silver, and ITO cannot support large-size touch screens.

Method used

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  • Touch screen structure capable of reducing silver migration probability
  • Touch screen structure capable of reducing silver migration probability
  • Touch screen structure capable of reducing silver migration probability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 As shown, a touch screen structure that reduces the probability of silver migration includes a touch screen sensing channel 1 and a channel lead 2, the touch screen sensing channel 1 is connected to the channel lead 2, the touch screen sensing channel 1 is made of nano-silver material, the A peripheral channel 3 is provided on the periphery of the touch screen sensing channel 1, the peripheral channel 3 is grounded, and the distance D between the peripheral channel 3 and the touch screen sensing channel 1>2mm, and the peripheral channel 3 uses silver paste as the conductive paste.

Embodiment 2

[0027] like figure 2 As shown, a touch screen structure that reduces the probability of silver migration includes a touch screen sensing channel 1 and a channel lead 2, the touch screen sensing channel 1 is connected to the channel lead 2, the touch screen sensing channel 1 is made of nano-silver material, the The periphery of the touch screen sensing channel 1 is provided with a peripheral channel 3, the peripheral channel 3 is connected to a power supply, and its power supply size is the same as that of the touch screen sensing channel 1, and the periphery of the peripheral channel 3 is also provided with a grounding wire 4, and the grounding wire is made of silver paste As the conductive paste, the peripheral channel 3 is made of copper paste or carbon paste as the conductive paste, and the distance D between the ground wire 4 and the peripheral channel 3 is ≤ 1 mm.

Embodiment 3

[0029] like image 3 As shown, a touch screen structure that reduces the probability of silver migration includes a touch screen sensing channel 1 and a channel lead 2, the touch screen sensing channel 1 is connected to the channel lead 2, the touch screen sensing channel 1 is made of nano-silver material, the The periphery of the touch screen sensing channel 1 is provided with a peripheral channel 3. The peripheral channel 3 is connected to a power supply whose power supply size is the same as that of the touch screen sensing channel 1. The distance between D≤1mm.

[0030] In the present invention, the channel leads 2 use silver paste or copper paste as the conductive paste.

[0031] The present invention also discloses an electronic device, which includes a touch screen body, and the touch screen structure in any of the above-mentioned embodiments is adopted on the touch screen body.

[0032] In this embodiment, the electronic device is specifically any one of a mobile pho...

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PUM

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Abstract

The invention discloses a touch screen structure capable of reducing the silver migration probability. Relating to the technical field of touch screens, the touch screen structure comprises a touch screen induction channel and a channel lead, the touch screen sensing channel is connected to a channel lead; the touch screen sensing channel is made of a nano-silver material; wherein the periphery ofthe touch screen induction channel is provided with a peripheral channel, the peripheral channel is connected to a power supply, the power supply size of the peripheral channel is the same as that ofthe touch screen induction channel, or the peripheral channel is grounded.

Description

technical field [0001] The invention belongs to the technical field of touch screens, and in particular relates to a touch screen structure for reducing silver migration probability. Background technique [0002] At present, the touch screen of the film structure scheme, due to the reasons of cost and square resistance, more and more film materials used are changed from the original ITO to nano-silver material. At present, only nano-silver film materials can be selected, but the problems of silver anodic oxidation and silver migration are the main obstacles for the large-scale promotion of nano-silver film materials. [0003] Silver migration refers to the fact that in a humid environment with a DC voltage gradient, water molecules penetrate into the surface of silver-containing conductors and electrolyze to form hydrogen ions and hydroxide ions. Under the action of an electric field, silver ions migrate from high potential to low potential and form flocculent Or dendritic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/044G06F2203/04103
Inventor 胡川刘小军华远洪丁永生
Owner WUHU LUNFENG ELECTRONICS TECH CO LTD