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Flexible 2-Layer Paper Printed Circuit Board Fabricated by Inkjet Printing for 3-D Origami Electronics

  • Mingyu Kang
  • Kyung-Tae Kang
Regular Paper
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Abstract

Inkjet printing has advantages to be easy to use, environmentally benign and adaptable for flexible electronics manufacturing. Also, paper is an emerging potential substrate due to extremely cheap price and its abundance. We used inkjet printing on a paper to make inexpensive flexible 3-D origami electronics. We printed two pads of 2 × 2 mm2 and the metal lines between pads that had the width of 0.2 mm and the length of 5 mm on the paper. Repetitive printing methods reduced the resistance value of metal lines. The measured resistance values of metal lines printed on a chromatography paper ten times repeatedly were less than 10 ohms. We confirmed that the metal lines printed on both sides of the paper were not connected and could be connected through the ‘printed via without holes’. The inkjet-printed metal lines on paper were successfully used to construct the simple PCB with LED. We also tested bending test and confirmed lighting the LED. In order to prevent that metal lines were broken during folding the paper PCB, both sides of the folding point were additionally printed such as via. As a result, the metal line was not broken even when folded.

Keywords

3-D printed electronics Paper electronics Metal printing Inkjet Origami 

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Copyright information

© Korean Society for Precision Engineering 2018

Authors and Affiliations

  1. 1.Korea Institute of Industrial TechnologyGyeonggi-doRepublic of Korea
  2. 2.Program in Nanoscience and Technology, Department of Transdisciplinary Studies, Graduate School of Convergence Science and TechnologySeoul National UniversitySeoulRepublic of Korea

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