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Full-self-healing stretchable liquid crystal light scattering display device and preparation method thereof

A display device and self-healing technology, applied in chemical instruments and methods, liquid crystal materials, optics, etc., can solve problems such as thermal reversibility that is not involved, and achieve the effect of extending service life and expanding application prospects.

Active Publication Date: 2019-01-08
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above studies only applied the photoresponsiveness and electrical responsiveness of liquid crystal physical gels, and did not involve their natural thermoreversible properties, that is, self-healing properties.

Method used

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  • Full-self-healing stretchable liquid crystal light scattering display device and preparation method thereof
  • Full-self-healing stretchable liquid crystal light scattering display device and preparation method thereof
  • Full-self-healing stretchable liquid crystal light scattering display device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Roll-coat AgNWs conductive network (silver nanowires, methanol: isopropanol = 1:1:1) on a clean glass plate to a surface resistance of 15Ω, configure furan / maleimide self-healing material (70wt% multifunctional furan compound and 30wt% maleimides), spread the polyurethane PU prepolymer on the surface of the self-repairing film for in-situ polymerization, and then cover the glass sheet coated with the conductive network. The PU film is cured at room temperature and then heat-treated, and then peeled off while hot to obtain a three-layer composite electrode of AgNWs / PU / self-healing film, which is a flexible self-healing film.

Embodiment 2

[0034] Roll-coat AgNWs conductive network (silver nanowires, methanol: isopropanol = 1:1:2) on a clean glass plate to a surface resistance of 20Ω, configure furan / maleimide self-healing material (80wt% multifunctional furan compound and 20wt% maleimides), and the multifunctional polyester acrylate PA-furfuryl methacrylate FM prepolymer (PA-FM prepolymer) is spread on the surface of the self-repairing film for in-situ polymerization , and then covered with a glass sheet coated with a conductive network. The PA-FM film is cured at room temperature and then heat-treated, and then peeled off while hot to obtain a three-layer composite electrode of AgNWs / PA-FM / self-healing film, which is a flexible self-healing film.

Embodiment 3

[0042] With reference to Table 2, 99.9wt% of the liquid crystal compound nematic phase (5CB) and 0.1wt% of the gel factor of the structural formula A are mixed uniformly and mutually soluble at 140° C. The device made of the obtained AgNWs / PU / self-healing film three-layer composite flexible self-healing film is then encapsulated by polyurethane PU, and the thickness of the device is controlled by spacer balls to 18 μm, and a fully self-healing stretchable liquid crystal light is obtained. Scattering display devices.

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Abstract

The invention relates to the technical field of display, aims to solve the problem that a traditional flexible deformable display device cannot be randomly bent and is damaged, and provides a full-self-healing stretchable liquid crystal light scattering display device and a preparation method thereof; the full-self-healing stretchable liquid crystal light scattering display device is composed of amiddle layer and covering layers located on the two sides of the middle layer, wherein the middle layer is self-assembled liquid crystal physical gel, and the covering layers are flexible self-repairing thin film. On the research basis of a traditional flexible device, the defect that the flexible device cannot be bent at will and is damaged is overcome; and the thermal reversible performance ofthe liquid crystal physical gel and the self-repairing function of the flexible conducting thin film are combined, so that the service life of the flexible deformable display device is prolonged, andthe application prospect is expanded.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a fully self-healing stretchable liquid crystal light-scattering display device and a preparation method thereof. Background technique [0002] At present, a lot of research on foldable and bendable display devices has gradually brought flexible display technology into the public's field of vision. There have been reports on the application of related flexible OLED displays, but such displays have fixed screen curvature, and users cannot I like to bend the display at will, otherwise it will accelerate the aging of the display, resulting in a decrease in brightness, black spots, dark lines and other damage, so that the service life of the flexible display will decline rapidly. [0003] Zhao Kaifeng conducted a comprehensive study on the preparation and properties of self-healing polymers based on Diels-Alder reversible covalent bonds in his master's thesis; Qibing Pei's research ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333C09K19/52
CPCC09K19/52C09K2019/526G02F1/1333G02F1/133305
Inventor 陈思王旭杜钦青童晓茜单天宇马猛施燕琴何荟文
Owner ZHEJIANG UNIV OF TECH