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Composition for preparing self-healing transparent touch electrode and method for preparing self-healing transparent touch electrode

A touch electrode and self-healing technology, applied in the field of preparing self-healing touch electrodes and compositions for preparing self-healing transparent touch electrodes, can solve problems such as easy bending

Active Publication Date: 2016-02-10
GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the protective layer can alleviate the problem, it runs counter to the goals of "thinness" and "bendability" pursued by flexible displays, and is not a good solution

Method used

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  • Composition for preparing self-healing transparent touch electrode and method for preparing self-healing transparent touch electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A composition for preparing self-healing transparent touch electrodes, including carbon nanotubes as conductive materials, one or more intercrosslinked polymers with self-healing function, and a solvent as a reaction medium, and the intercrosslinked polymers adsorbed on carbon nanotubes.

[0030] The polymers constituting the above composition are hydrogen bonded and physically crosslinked. The polymers are combined by hydrogen bonds first, and then a cross-linking reaction occurs to form a hydrogen-bonded cross-linked network. The hydrogen bond is reversible. When the hydrogen bond is broken by an external force, the polymer can be cross-linked again by means of the hydrogen bond to achieve self-healing. Therefore, the polymer has good strength and self-healing function.

[0031] Specifically, the carbon nanotubes are any one of single-walled carbon nanotubes, double-walled carbon nanotubes and multi-walled carbon nanotubes or a combination of any two or more. The m...

Embodiment 2

[0044] The method for preparing a self-healing transparent touch electrode using the composition for preparing a self-healing transparent touch electrode of Example 1 specifically includes the following steps:

[0045] (1) Coating or printing the composition for preparing self-healing transparent touch electrodes on a flexible substrate, the thickness of the composition ranges from The preferred thickness is

[0046] Flexible substrates generally use resins, such as PEN and PEI, PEI is preferred, self-healing cross-linked copolymer materials and resin flexible substrates can be better combined. This not only enables the carbon nanotube electrode to have the ability of self-healing, but also strengthens the adhesion between the electrode and the substrate.

[0047] (2) Heat treatment at 80°C to 250°C.

[0048] (3) Patterning the composition layer by using an ashing process. The ashing process is specifically a photolithography process using a gray-scale mask, the light tr...

Embodiment 3

[0051]A composition for preparing self-repairing transparent touch electrodes, others are the same as in Example 1, except that the copolymer is a side chain graft type, and the silicon component is aminopropyl functionalized polydimethylsiloxane ( aminopropyl-functionalizedaminopropylfunctionalizedAP-PDMS), the cross-linking component is polyglycine. The composition was obtained after mixing the copolymer with single-walled carbon nanotubes and sodium dodecylbenzenesulfonate (NaDDBS). Through the composition of the invention, a self-repairing transparent touch electrode can be prepared without affecting the thinness and bendability of the device.

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Abstract

The invention discloses a composition for preparing a self-healing transparent touch electrode and a method for preparing a self-healing transparent touch electrode. The composition for preparing a self-healing transparent touch electrode comprises carbon nanotubes, one or more cross-linked polymers with a self-healing function, and a solvent as the reaction medium, wherein the cross-linked polymers are adsorbed on the carbon nanotubes. The polymers are bound by hydrogen bonds and are physically cross-linked. When the hydrogen bonds are disconnected under external force, the polymers can be bound again by the hydrogen bonds. The method for preparing a self-healing transparent touch electrode comprises the following steps: (1) applying or printing the composition on a flexible substrate, wherein the thickness of the composition is 100-1000 angstroms; (2) carrying out heat treatment at 80-250 DEG C; and (3) patterning the composition using an ashing process. By adopting the composition and the method, a self-healing transparent touch electrode can be prepared, and the lightness and thinness and the bending performance of devices are not affected.

Description

technical field [0001] The invention relates to the field of flexible display technology, in particular to a composition for preparing self-repairing transparent touch electrodes and a method for preparing self-repairing touch electrodes. Background technique [0002] With the continuous upgrading of users' demands for intuitive and humanized operation, the touch screen has become one of the standard configurations of smart phones and tablets. With the growing popularity of wearable display and flexible display concepts, it means that display manufacturers will face new challenges. In order to realize flexible display, each element of the display screen must be integrated on a flexible substrate. During use, each component will be subjected to more frequent and higher-intensity external impacts than ordinary rigid displays, and the touch panel is no exception. [0003] Especially for displays using On-cell or OGS technology, because the touch panel is located on the displa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/20H01B13/00G06F3/041
Inventor 宁洪龙彭俊彪王磊兰林锋
Owner GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD