Verification of Bonding Force between PVP Dielectric Layer and PDMS for Application of Flexible Capacitive-type Touch Sensor with Large Dynamic Range

넓은 다이내믹 레인지의 유연 촉각센서 적용을 위한 PVP 유전층과 PDMS 접착력 검증

  • Won, Dong-Joon (Mechanical Engineering, Pohang University of Science and Technology) ;
  • Huh, Myoung (Mechanical Engineering, Pohang University of Science and Technology) ;
  • Kim, Joonwon (Mechanical Engineering, Pohang University of Science and Technology)
  • Received : 2016.01.03
  • Accepted : 2016.07.21
  • Published : 2016.08.31


In this paper, we fabricate arrayed-type flexible capacitive touch sensor using liquid metal (LM) droplets (4 mm spatial resolution). Poly-4-vinylphenol (PVP) layer is used as a dielectric layer on the electrode patterned Polyethylene naphthalate (PEN) film. Bonding tests between hydroxyl group (-OH) on the PVP film and polydimethylsiloxane (PDMS) are conducted in a various $O_2$ plasma treatment conditions. Through the tests, we can confirm that non-$O_2$ plasma treated PVP layer and $O_2$ plasma treated PDMS can make a chemical bond. To measure dynamic range of the device, one-cell experiments are conducted and we confirmed that the fabricated device has a large dynamic range (~60 pF).



Supported by : National Resarch Foundation of Korea(NRF)


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