Highly integrated elastic island-structured printed circuit board with controlled young's modulus for stretchable electronics

Duho Cho, Junhyung Kim, Pyoenggeun Jeong, Wooyoung Shim, Su Yeon Lee, Youngmin Choi, Sungmook Jung

Research output: Contribution to journalArticle

Abstract

Astretchable printed circuit board (PCB), which is an essential component of next-generation electronic devices, should be highly stretchable even at high levels of integration, as well as durable under repetitive stretching and patternable. Herein, an island-structured stretchable PCB composed of materials with controlled Young's modulus and viscosity by adding a reinforcing agent or controlling the degree of crosslinking is reported. Each material was fabricated with the most effective structures through a 3D printer. The PCB was able to stretch 71.3% even when highly integrated and was patterned so that various components could be mounted. When fully integrated, the stress applied to the mounted components was reduced by 99.9% even when stretched by over 70%. Consequently, a 4 x 4 array of capacitance sensors in a stretchable keypad demonstration using our PCB was shown to work, even at 50% stretching of the PCB.

Original languageEnglish
Article number617
Pages (from-to)1-13
Number of pages13
JournalMicromachines
Volume11
Issue number6
DOIs
Publication statusPublished - 2020 Jun 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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