Flexible stretchable conductive circuit and preparation method and use thereof

A conductive line, flexible technology, applied in the direction of printed circuit manufacturing, printed circuit, conductive pattern formation, etc., can solve the problems that are not suitable for fine pattern preparation and large-scale production, affect electrical performance, and pattern structure

Inactive Publication Date: 2018-10-16
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can skillfully avoid the huge surface energy of liquid metal, the line width of the pattern obtained by this method is limited by the aperture of the needle tip, the pattern is prone to cracks and affects the electrical performance, and the additional external force will affect the structure of the pattern. , also not suitable for the preparation of fine patterns and large-scale production

Method used

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  • Flexible stretchable conductive circuit and preparation method and use thereof
  • Flexible stretchable conductive circuit and preparation method and use thereof
  • Flexible stretchable conductive circuit and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] This example is used to illustrate the flexible and stretchable conductive circuit prepared by the method of the present invention.

[0096] Put 1g of liquid indium gallium eutectic alloy (EGaIn Ga 75.5%wt In 24.5%wt) in 1ml of mixed solution of n-octanol and glycerol (volume ratio octanol: glycerol=80:20), use Ultrasonic cell disruptor ultrasonicated at 30% amplitude for 60s to obtain a gray liquid metal suspension. The metal was dispersed into numerous micro-nano sized particles with an average particle size of 1500nm. The core of the small particles is liquid metal, and the outside is covered by a thin oxide film. In order to achieve complete transfer, the PET film was selected as the original pattern layer, and the PDMS solution was prepared according to the ratio of PDMS prepolymer: curing agent mass ratio of 10:1. Line widths of 200, 300, 500, 600, 800 and 1000 microns were produced on PET films using screen printing techniques, such as Figure 9 , and its width...

Embodiment 2

[0098] This example is used to illustrate the flexible and stretchable conductive circuit prepared by the method of the present invention. Put 1 g of liquid indium-gallium-tin alloy (In(22)Ga(68)Sn(10)) in 1 ml of 1,4-butyrolactone, and use an ultrasonic cell disruptor to sonicate at 30% amplitude for 30 minutes to obtain the average Ink with a particle size of 600nm. The present invention uses soft etching technology to prepare microfluidic channels with a depth of 80 microns and a width of 200 microns, 100 microns, 80 microns, 50 microns and 20 microns on the surface of the elastomer PDMS, and then fills the ink into the groove with a scraper A pattern is formed in the channel, that is, the PDMS layer is the original pattern layer. Place the pattern in an oven at 80 degrees Celsius for 30 minutes. Then use Smooth-On Ecoflex 0030 as a release layer to cast over the pattern. After being cured at room temperature for 6 hours and peeled off from the PDMS, conductive patterns ...

Embodiment 3

[0100] This example is used to illustrate the flexible and stretchable conductive circuit prepared by the method of the present invention.

[0101] Put 1g of liquid indium-gallium-tin alloy (In(22)Ga(68)Sn(10)) in 1ml of N-methylpyrrolidone, and use an ultrasonic cell disruptor to sonicate at 30% amplitude for 30min to obtain the average particle size 600nm ink. In order to achieve complete transfer, the PET film was selected as the original pattern layer, and the PDMS solution was prepared according to the ratio of PDMS prepolymer: curing agent mass ratio of 10:1. Use inkjet printing method to print the desired pattern on the PET film. That is to say, the prepared ink is added to a piezoelectric nozzle or a thermal bubble nozzle, and the diameter of the nozzle is 40-200 microns. The nozzle prints the required pattern in the preset trajectory. Other steps are as shown in Example 1. We can obtain conductive patterns by inkjet printing.

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Abstract

The invention provides a flexible stretchable conductive circuit, a preparation method and use thereof. The invention also provides double-sided wiring, multilayer board, flexible display, flexible electronics, and/or sensor comprising the flexible stretchable circuit described above. The method for preparing flexible stretchable conductive circuit provided by the invention is simple and rapid, and is generally applicable to various substrate materials, the liquid metal is used in a small amount, does not require additional external force, and the pattern does not generate cracks, the wire width is controllable, has a high resolution and it's very suitable for mass production.

Description

technical field [0001] The invention belongs to the field of electronic circuits. Specifically, the invention relates to a flexible and stretchable conductive circuit and a preparation method and application of the circuit. Background technique [0002] Printed circuit (PCB) board technology has dominated the circuit manufacturing industry since its inception, and printed circuit boards can be found in almost any piece of electronic equipment in every corner of the world. However, with the continuous development of science and technology, the combination of biotechnology and electronic technology is getting closer and closer, and rigid printed circuit boards are increasingly unable to meet the needs of flexible circuits, such as the development of wearable devices, electronic devices combined with tissue engineering The emergence of flexible and stretchable circuit boards is urgently needed in the fields such as. It is not difficult to achieve flexibility. Generally speakin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/09H05K3/10H05K3/12
CPCH05K1/092H05K3/107H05K3/1216H05K3/1241H05K2203/0502
Inventor 蒋兴宇唐立雪
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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