Multifunctional flexible electronic device, application and preparation method

A multi-functional and flexible technology, applied in cable/conductor manufacturing, equipment for manufacturing conductive/semiconductive layers, circuits, etc., can solve the difficulties of multi-functional flexible electronic light-emitting devices, low-cost patterned light-emitting is difficult to achieve, Complicated weaving methods and other problems, to achieve the effect of rich raw materials, low cost, and solve uneven coating

Active Publication Date: 2019-07-19
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are only a few reports about fabric electronics. The patent publication number CN101240475B discloses an electronic fabric, which needs to be cross-woven with transverse fibers and longitudinal fibers, and needs to be divided into conductive area groups and insulating area groups. The overall weaving method is more complicated
Other prior art mentions simply soaking the fabric into a conductive solution to obtain an infrared-shielding and heatable fabric. However, due to the complex shape of the fabric surface, it is difficult to realize multifunctional flexible electronics based on fabrics, especially light-emitting devices. , and low-cost, easy-to-operate patterned luminescence on fabrics is more difficult to achieve

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
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  • Multifunctional flexible electronic device, application and preparation method
  • Multifunctional flexible electronic device, application and preparation method
  • Multifunctional flexible electronic device, application and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The average length of silver nanowires used in this example is 20 μm.

[0040] 1) Preparation of the first electrode layer: Spray silver nanowires on the base of a plastic petri dish to prepare a conductive film. The average length of the silver nanowires used is 20 μm, the sheet resistance of the film is 10Ω / sq, and the light transmittance is 55%. The conductive film has both the functions of the inner electrode in the light-emitting mode and the heating layer in the heating mode. Then drop-coat NOA63 on the conductive film as an adhesive and cover the fabric on NOA63, and peel it off from the substrate after the whole is completely cured.

[0041] 2) Prepare the luminescent functional layer: fully mix the ZnS phosphor and the insulating polymer (PB, ie polybutadiene) to prepare the luminescent layer solution, wherein for the blue luminescent functional layer material, the phosphor added is ZnS: Cu; orange light-emitting functional layer material, the phosphor powder ...

Embodiment 2

[0050] The silver nanowires used in this example have an average length of 10 μm.

[0051] 1) Preparation of the first electrode layer: Spray silver nanowires on the base of a plastic petri dish to prepare a conductive film. The average length of the silver nanowires used is 10 μm, the sheet resistance of the film is 1Ω / sq, and the light transmittance is 20%. The conductive film has both the functions of the inner electrode in the light-emitting mode and the heating layer in the heating mode. Then drop-coat NOA63 on the conductive film as an adhesive and cover the fabric on NOA63, and peel it off from the substrate after the whole is completely cured.

[0052] 2) Preparation of luminescent functional layer: fully mix ZnS phosphor and insulating polymer (PB) to prepare a luminescent layer solution, wherein for the blue luminescent functional layer material, the phosphor powder added is ZnS:Cu, and spin-coated A large-area luminescent layer was obtained by spin coating and drie...

Embodiment 3

[0062] The average length of silver nanowires used in this example is 200 μm.

[0063] 1) Preparation of the first electrode layer: Spray silver nanowires on the base of a plastic petri dish to prepare a conductive film. The average length of the silver nanowires used is 200 μm, the sheet resistance of the film is 100Ω / sq, and the light transmittance is 90%. With the function of inner electrode in light-emitting mode and heating layer in heating mode, the density of silver nanowires should be as high as possible to obtain good conductivity. Then drip-coat NOA63 as an adhesive on the conductive film and cover the fabric on NOA63, and peel it off from the substrate after the whole is completely cured.

[0064] 2) Preparation of luminescent functional layer: fully mix ZnS:Cu phosphor with insulating polymer (PB) to prepare a luminescent layer solution with a mass ratio of 1:1. Select the Chinese zodiac seal with the "pig" pattern, press a small amount of luminescent layer soluti...

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
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Abstract

The invention discloses a multifunctional flexible electronic device, an application and a preparation method. Specifically the multifunctional flexible electronic device comprises a first electrode layer (a), a light-emitting functional layer (b), a dielectric layer (c) which is a transparent or semitransparent insulating polymer, a second electrode layer (d), and an insulating protective layer (e) which is the transparent or semitransparent insulating polymer. The invention further discloses an application and a preparation method of the flexible electronic device. The multifunctional flexible electronic device is directly prepared on a common fabric; the raw materials are rich, the cost is low, the integrity is high, and the implementation is easy; a patterned flexible electronic deviceis prepared innovatively by handwriting, imprinting and other ways; Joule heat is generated by utilizing electrodes so as to obtain a flexible heatable device; and the patterned flexible electronic device and the flexible heatable device are combined to obtain the multifunctional flexible electronic device based on the common fabric.

Description

technical field [0001] The invention relates to a multifunctional flexible electronics, an application and a preparation method, specifically belonging to the field of flexible and wearable electronics. Background technique [0002] With the advancement of technology and the improvement of people's requirements for technology, flexible and wearable electronics will gradually become the trend of multifunctional flexible electronics, such as various foldable mobile phones, smart watches, portable medical equipment, etc. However, these electronic devices may not be fully flexible, or the comfort of the external wear is too low, and they are far from meeting people's ultimate expectations for wearable electronics. [0003] An effective way to solve the problem of wearing comfort is to combine flexible electronics with the clothes people wear every day, that is, textile electronics. At present, there are only a few reports about fabric electronics. The patent publication number ...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00H05B3/14F21K2/00
CPCF21K2/00H01B5/14H01B13/0026H05B3/146
Inventor 刘举庆孙涛田志辉
Owner NANJING UNIV OF TECH
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