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Flexible electronic skin and production method thereof

A technology of electronic skin and flexible electrodes, which is applied in the field of preparation of flexible electronic skin, can solve the problems of inability to meet multi-channel large-scale signal acquisition, small flexible sensor area, complex preparation process, etc., achieve good bonding performance and reduce manufacturing time , The effect of reducing manufacturing costs

Inactive Publication Date: 2019-09-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these flexible electronic device preparation methods have one or more of the following disadvantages: 1) The area of ​​the prepared flexible sensor is small, which cannot meet the multi-channel large-scale signal acquisition; 2) The preparation process is complicated, time-consuming and costly; therefore For these existing problems, it is necessary to develop a new method for the preparation of flexible electronic skin

Method used

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  • Flexible electronic skin and production method thereof
  • Flexible electronic skin and production method thereof
  • Flexible electronic skin and production method thereof

Examples

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preparation example Construction

[0038] A preparation method of flexible electronic skin, such as Figure 5 As shown, the flexible electronic skin includes functional layers, substrate A and adhesive substrate B from top to bottom, as figure 1 As shown, the preparation method of the flexible electronic skin comprises the following steps:

[0039] (a) Preparation of composite substrate

[0040] The composite substrate includes a substrate A2 and an auxiliary substrate 1, the substrate A2 is attached on the auxiliary substrate 1, and the two are connected by a sacrificial layer arranged on the auxiliary substrate;

[0041] The substrate A is preferably an organic flexible film, and the auxiliary substrate is preferably a water transfer tattoo paper, which has its own starch layer.

[0042] The sacrificial layer 3 is preferably starch or pectin.

[0043] (b) preparation of functional layers,

[0044] (b1) if figure 2 As shown, the functional layer includes a connection layer 4 and a metal conductive layer,...

Embodiment 1

[0059] (a) Use water transfer printing tattoo paper, and attach PET film on the tattoo paper. There is a layer of starch on the surface of the tattoo paper itself, as a sacrificial layer, and the film as the base;

[0060] (b1) Evaporating metal on the PET film by evaporation. Among them, chromium is evaporated as the connection layer first to increase the adhesion of conductive metals on PET, and then conductive metals such as gold and silver are evaporated as functional layers, and signal transmission is mainly completed by this functional layer. Such as figure 2 Shown, after finishing this step, composite film is obtained, and it comprises PET film, functional layer, connecting layer;

[0061] (b2) Using AUTOCAD to design the electromyographic pattern, using laser cutting or numerical control cutting to cut and pattern the composite film in step 2, to obtain the required flexible electronic components;

[0062] (b3) Use water to spray the back of the tattoo paper to red...

Embodiment 2

[0066] (a) Use water transfer printing tattoo paper, and attach PET film on the tattoo paper. There is a layer of pectin on the surface of the tattoo paper itself, as a sacrificial layer, and the film as the base;

[0067] (b1) Evaporating metal on the PET film by evaporation. Among them, chromium is evaporated first as the connecting layer to increase the adhesion of conductive metal on PET, and then silver conductive metal is evaporated as the functional layer, and the signal transmission is mainly completed by the functional layer. Such as figure 2 , after completing this step, a composite film is obtained, which includes a PET film, a functional layer, and a connecting layer;

[0068] (b2) Using AUTOCAD to design the electromyographic pattern, using laser cutting or numerical control cutting to cut and pattern the composite film in step 2, to obtain the required flexible electronic components;

[0069] (b3) Use water to spray the back of the tattoo paper to reduce the ...

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Abstract

The invention belongs to the field flexible electronic skin and discloses flexible electronic skin and a production method thereof. The flexible electronic skin comprises a functional layer, a substrate A and an adhesive substrate B from top to bottom. The production method includes that (a), a compound substrate comprises the substrate A and an auxiliary substrate which are connected through a sacrificial layer arranged on the auxiliary substrate; (b1), the functional layer comprises a connecting layer and a metal conductive layer which are produced layer by layer through evaporation; (b2), a compound layer formed by the functional layer and the substrate A is subjected to pattern cutting to cut the compound layer into a flexible electrode part and a non-functional part; (b3), the non-functional part is stripped; (c), tape is adhered to the functional layer in the flexible electrode part, and the auxiliary substrate is removed to obtain the flexible electrode part adhered to the tape; (d), the adhesive substrate B is adhered to the substrate A, and the tape is removed to obtain the flexible electronic skin. By the production method, a traditional production process is simplified, and production cost is lowered.

Description

technical field [0001] The invention belongs to the field of flexible electronic skin, and more specifically relates to a method for preparing a flexible electronic skin and a product thereof. Background technique [0002] The flexible electronic skin is light and thin, soft and bendable, and has the characteristics of good adhesion to the skin. These characteristics make it have broad application prospects in health monitoring, prosthetic limb control, etc. [0003] At present, there are some manufacturing processes for flexible electronic skin devices, such as patent No. CN200710005352.6, which provides a method for manufacturing flexible electronic devices that adheres a flexible film to the etched surface of a substrate. Patent No. 201110091338.9 proposes a method for preparing a flexible electronic device that uses screen printing technology to print circuits on a flexible circuit board. Patent No. 201620900658.2 provides a preparation method for circuit preparation a...

Claims

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Application Information

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IPC IPC(8): A61F2/68B32B7/12B32B27/36B32B27/40B32B33/00B32B37/12B32B38/10
CPCA61F2/68B32B7/12B32B27/36B32B27/40B32B33/00B32B37/12B32B38/10
Inventor 申曜鑫张树昌邓鹏飞杨朝宇
Owner HUAZHONG UNIV OF SCI & TECH