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Method for high-accuracy ink printed flexible circuit

An inkjet printing, flexible circuit technology, applied in the directions of printed circuits, printed circuit manufacturing, electrical components, etc., can solve the problems of low precision and resolution, unfavorable preparation of high-precision electronic circuits, etc., to improve resolution and good compatibility. , Improve the effect of printing accuracy

Inactive Publication Date: 2018-07-27
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the accuracy and resolution of inkjet printing are relatively low at present, and the printed conductive ink spreads seriously on a variety of flexible substrates, which is not conducive to the preparation of high-precision electronic circuits.

Method used

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  • Method for high-accuracy ink printed flexible circuit
  • Method for high-accuracy ink printed flexible circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Spin-coat a layer of PDMS superhydrophobic material on the PET substrate, control the rotation speed at 8000rpm / s, spin-coating time is 30s, then control the temperature on the heating table to 120°C, and heat and cure for 1min. Then it was treated with oxygen plasma for 3s, and the treatment power was 700W. The processed substrate was placed on the printing platform, pre-heated to 55°C, and the control dot pitch was 35 μm to print the circuit.

Embodiment 2

[0028] A layer of PDMS superhydrophobic material was spin-coated on the PEN substrate, the rotation speed was controlled at 8000rpm / s, the spin-coating time was 30s, and then the temperature was controlled at 120°C on a heating platform, and heated and cured for 1min. Then it was treated with oxygen plasma for 3s, and the treatment power was 700W. The processed substrate was placed on the printing platform, preheated to 45°C, and the control dot pitch was 40 μm to print the circuit.

Embodiment 3

[0030] A layer of PDMS superhydrophobic material was spin-coated on the PI substrate, the rotation speed was controlled at 8000rpm / s, the spin-coating time was 30s, and then the temperature was controlled at 120°C on a heating platform, and heated and cured for 1min. Then it was treated with oxygen plasma for 3s, and the treatment power was 700W. The processed substrate was placed on the printing platform, preheated to 40°C, and the control dot pitch was 45 μm to print the circuit.

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PUM

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Abstract

The invention discloses a method for high-accuracy ink printed flexible circuit. The method comprises process parameter optimization and substrate surface modification and processing and comprises thefollowing steps of coating a layer of high-hydrophobicity material polydimethylsiloxane PDMS on a flexible substrate such as polyethylene terephthalate PET, polyethylene naphthalate PEN, polyimide PI, polyvinyl alcohol PVA, polyurethane acrylate PUA and a hydrogenated styrene-butadiene segmented copolymer SEBS, performing oxygen plasma or ultraviolet ozone (UVO) processing, rising a temperature of the processed substrate to 30-65 DEG C, and controlling an ink printing circuit within a point distance range of 20-65 micrometers. The patterned circuit fabricated by the method has the characteristics of high circuit accuracy, small line width and high resolution, and high conductivity and high flexibility are shown.

Description

technical field [0001] The invention relates to an inkjet printing method for flexible circuits, belonging to the technical fields of printed electronics and flexible electronics. Background technique [0002] As a basic component of electronic components, electronic circuits are widely used in optoelectronic technology, communications, artificial intelligence, Internet of Things, national defense and other fields. At present, the preparation of electronic circuits mainly involves chemical etching and other processes, which are complicated, waste raw materials, high cost, and pollute the environment. In addition, traditional circuit boards mostly use hard substrates with poor flexibility, which is not suitable for the development needs of low-cost, large-area flexible electronic components in the future. As an emerging electronic manufacturing technology, inkjet printing has unique advantages over traditional chemical etching processes. Inkjet printing is an additive manuf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/12
CPCH05K3/125H05K2203/0502H05K2203/1173
Inventor 赖文勇程涛黄维吴幼薇陈雅丽
Owner NANJING UNIV OF POSTS & TELECOMM
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