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Roll-to-roll capacitive touch screen sensor and preparation method thereof

A capacitive touch screen, roll-to-roll technology, applied in the direction of electrical digital data processing, instruments, data processing input/output process, etc., can solve the problems of high energy consumption, inability to realize rapid manufacturing of touch screens, high processing costs, etc., to achieve conductive Good performance, good product performance stability, and low production cost

Active Publication Date: 2018-01-12
珠海纳金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing industry, hard inorganic oxide materials such as indium tin oxide (ITO) are mainly used as the transparent conductive layer of the touch screen function sheet. It needs to go through cumbersome process steps such as masking, exposure, development, etching, and water washing, which is the main bottleneck that prevents the downstream industry chain from realizing rapid manufacturing of touch screens, and brings many troubles to the electronics industry.

Method used

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  • Roll-to-roll capacitive touch screen sensor and preparation method thereof
  • Roll-to-roll capacitive touch screen sensor and preparation method thereof
  • Roll-to-roll capacitive touch screen sensor and preparation method thereof

Examples

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preparation example Construction

[0052] The preparation method of above-mentioned first conductive ink, comprises:

[0053] Premixing step: dissolving the conductive polymer in the solvent, and then adding the silane coupling agent under stirring condition to completely dissolve the silane coupling agent to obtain a premixed solution;

[0054] The step of activating the nano-silver wire: adding a wetting and dispersing agent to the nano-silver wire, dispersing and activating the nano-silver wire, the concentration of the nano-silver wire in the solvent is 1-100mg / mL, and obtaining a nano-silver wire dispersion;

[0055] The step of dispersing the nano-metal particles: dispersing the nano-metal particles into a solvent to obtain a nano-metal particle dispersion;

[0056] Mixing step: add a pH regulator to adjust the pH of the premix to 7-8, add a polymer resin to the premix under agitation, and dissolve the polymer resin; then gradually add a viscosity regulator, non-ionic Surfactant, leveling agent and defoa...

Embodiment 1

[0098] refer to Figure 1-Figure 3 , a roll-to-roll capacitive touch screen functional sheet, comprising a substrate 10, a first electrode 20, a second electrode 30, a third electrode 40, an erasure protection layer 50 and an OCA optical adhesive layer 60;

[0099] The first electrode 20 is disposed in the middle of the upper surface of the substrate 10;

[0100] The second electrode 30 is arranged on the upper surface of the substrate 10 and is located on the outer periphery of the first electrode 20; the second electrode 30 includes a second electrode body 31 connected to the first electrode 20 and a Several second electrode leads 32 extending outward from the second electrode body 31;

[0101] Each of the second electrode leads 32 is covered with the third electrode 40;

[0102] The erasure protection layer 50 covers the upper surface of the first electrode 20 , and the erasure protection layer 50 covers parts of the second electrode 30 other than the surface covered by t...

Embodiment 2

[0114] A roll-to-roll capacitive touch screen functional sheet, the difference lies in: the thickness of the substrate is 125um. The square resistance of the first electrode is 60Ω / □, and its thickness is 400nm. The square resistance of the second electrode is 1Ω / □, and its thickness is 1um. The square resistance of the third electrode is 10Ω / □, and its thickness is 5um. The thickness of the erasing protective layer is 300nm; the thickness of the OCA optical adhesive layer is 5um.

[0115] Others are the same as in Example 1.

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Abstract

The invention discloses a roll-to-roll capacitive touch screen sensor. The roll-to-roll capacitive touch screen sensor comprise a substrate, a first electrode, a second electrode, third electrodes, adisapparation protection layer and an OCA optical adhesive layer, wherein the first electrode is arranged at the middle part of the upper surface of the substrate; the second electrode is arranged onthe upper surface of the substrate and at the periphery of the first electrode; the second electrode comprises a second electrode body and second electrode leads; the third electrodes cover the secondelectrode leads; the disapparation protection layer covers the upper surface of the first electrode and the parts, except the surface covered by the third electrodes, of the second electrode; and theOCA optical adhesive layer covers the first electrode, the second electrode, the third electrodes and the disapparation protection layer. The invention furthermore discloses a preparation method of the roll-to-roll capacitive touch screen sensor. The touch screen sensor has the characteristics of being low in resistance, good in electric conductivity, low in production cost and excellent in buckling performance. The preparation method has the characteristics of being simple in process, high in production efficiency, good in product performance stability and high in yield.

Description

technical field [0001] The invention relates to a capacitive touch screen functional sheet, in particular to a roll-to-roll capacitive touch screen functional sheet and a preparation method thereof. Background technique [0002] With the increasing material level, consumers' requirements for electronic products are rapidly developing in terms of thinner, lighter, more flexible, visualized, and touch-sensitive devices. At present, touch screens and related industrial chains all over the world are being integrated into people's daily life at an extremely fast speed. In addition, flexible display technology shows that the display has the characteristics of being able to bend or curl into any shape, and has the characteristics of being light, thin and easy to carry. [0003] In the existing industry, hard inorganic oxide materials such as indium tin oxide (ITO) are mainly used as the transparent conductive layer of the touch screen function sheet. The need to go through tediou...

Claims

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Application Information

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IPC IPC(8): G06F3/044G06F3/041
Inventor 雷震吴浩松丁轶
Owner 珠海纳金科技有限公司
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