Graphical flexible electrode, preparation method and flexible display device

A flexible electrode and patterning technology, which is applied in the direction of circuits, electrical components, and electrical solid devices, can solve problems affecting product quality and life, electrode damage, and depletion of microsphere wrappings, so as to improve flexural resistance and Product life, ensuring the uniformity of luminescence, and improving product competitiveness

Active Publication Date: 2018-06-29
HISENSE VISUAL TECH CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a display device for wearable display, it needs to be bent and deflected multiple times, which will damage the electrodes, resulting in display mura, affecting product quality and lifespan
[0003] At present, most of the flexible display electrode materials in the industry are nano-silver wires and other materials, and the problem of repair after fracture has not been effectively solved, and

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Graphical flexible electrode, preparation method and flexible display device
  • Graphical flexible electrode, preparation method and flexible display device
  • Graphical flexible electrode, preparation method and flexible display device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0059] According to another aspect of the present invention, there is provided a method for preparing a patterned flexible electrode, including the following steps:

[0060] (1) Connecting long-chain polymers on the surface of micro metal particles;

[0061] (2) The surface of the fiber is coated with organic molecules;

[0062] (3) Mix the micro metal particles treated in step (1), the fibers treated in step (2), and the metal electrode material slurry to obtain a flexible electrode material, wherein the organic molecules and the long-chain polymer pass through hydrogen Key connection, the fiber wraps the micro metal particles;

[0063] (4) Pattern the flexible electrode paste to obtain the patterned flexible electrode.

[0064] According to an embodiment of the present invention, in step (2), the fibers and the organic molecules are mixed in a mass ratio of (4-5):1.

[0065] According to one embodiment of the present invention, the organic molecule is 4-vinylpyridine; the long-chain p...

Example

[0066] Preparation Example 1

[0067] In this embodiment, the preparation method of the flexible electrode includes the following steps:

[0068] a. Dissolve 1 mol of m-phenylalkyl anhydride in an organic solvent (such as acetone, methanol, ethanol, etc.), add 2 mol of alkyl hydrazine solution, mix well, stir in an ice water bath, and quickly add powdered metal particles (Such as micro-silver, micro-nickel, etc.); after reacting for 20 minutes, transfer the above mixed solution to a 60°C water bath to continue the reaction to the end, and a viscous liquid is obtained, which is micro-metal particles with long-chain polymers attached to the surface; The reaction formula of base acid anhydride and alkyl hydrazine to produce long-chain polymer is as follows image 3 Shown. One of the amino groups of the alkylhydrazine reacts with m-phenylalkyl anhydride to form an amide bond, and the other amino group can continue to react with the acid anhydride to form a polymer.

[0069] b. Add 4-me...

Example

[0075] Preparation Example 2

[0076] The flexible electrode of this embodiment is prepared according to a method similar to that of Preparation Example 2, wherein the organic molecules are selected from isocyanates; the long-chain polymer is a long-chain polymer obtained by the reaction of phthalic acid and 1,12-octadecyl glycol. Chain polymer; long-chain polymer and isocyanate are connected by hydrogen bonds.

[0077] According to yet another aspect of the present invention, there is provided a flexible display device, which includes the patterned flexible electrode as described above and the patterned flexible electrode obtained by the above-mentioned manufacturing method.

[0078] According to an embodiment of the present invention, the patterned flexible electrode serves as a cathode electrode layer for flexible display.

[0079] The flexible display device according to the present invention further includes an electron transport layer, a light emitting layer, a hole transport la...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Line widthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of display, in particular to a graphical flexible electrode, a preparation method and a flexible display device. The flexible electrode comprises a graphical line, wherein the graphical line comprises a metal electrode material and further comprises fiber and micro-metallic particle; long-chain polymer is connected with the surface of the micro-metallicparticle; organic molecule is covered on the surface of the fiber; the organic molecule is connected with the long-chain polymer through a hydrogen bond; the fiber wraps the micro-metallic particle.The graphical flexible electrode has dynamic self-repairing capability, can dynamically repair bending fatigue damage during disconnection, rapidly recover path and eliminate display defect after being applied to the flexible display device, guarantees the uniformity of luminance, and improves the deflection resistance capacity and increases the service life of a product.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a patterned flexible electrode, a preparation method, and a flexible display device. Background technique [0002] Flexible display QLED (Quantum Dot Light Emitting Diode) or OLED technology, as the future display technology, has the advantages of high brightness, fast response, wide color gamut, better HDR effect, etc. Flexible QLED is considered to be the ultimate in next-generation quantum display technology form. Flexible display technology has the advantages of strong portability and rich application scenarios. As a display device for a wearable display, it needs to be bent and flexed many times, which will damage the electrodes, resulting in display mura, affecting product quality and lifespan. [0003] At present, most flexible display electrode materials in the industry are nano-silver wires and other materials, and the problem of repair after fracture has not been eff...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01L51/52H01L51/56
CPCH10K50/805H10K50/82H10K71/00H10K2102/311
Inventor 刘振国宋志成刘卫东
Owner HISENSE VISUAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap