Auxetic Meta‐Display: Stretchable Display without Image Distortion

Abstract: Mechanical metamaterials possess unusual mechanical properties that cannot be found in nature. Auxetic metamaterials have negative Poisson's ratios and tend to expand in a direction perpendicular to the axial extension direction. When the Poisson's ratio of a display circuit board is forced to be −1 by adopting an auxetic metamaterial, a display can be stretchable without image distortion, and this display is called a meta‐display in this study. The critical obstacles to implementing a stretchable display are large stretchability, high deformation uniformity, and low image distortion. The meta‐display overcomes these obstacles by incorporating micro‐LEDs and a kirigami‐based auxetic circuit board. An auxetic meta‐display with a stretchability of 24.5%, Poisson's ratio of −1, and no image distortion under uniaxial stretching is demonstrated. Finally, the roll transfer process enabled the scaling‐up of a 3‐inch meta‐display attachable to surfaces with non‐zero Gaussian curvatures. This conformity to the non‐zero Gaussian curvature helps realize biomedical applications such as wearable display, phototherapy, and skincare.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Auxetic Meta‐Display: Stretchable Display without Image Distortion ; day:15 ; month:02 ; year:2022 ; extent:10
Advanced functional materials ; (15.02.2022) (gesamt 10)

Urheber
Jang, Bongkyun
Won, Sejeong
Kim, Jaegu
Kim, Juho
Oh, Minsub
Lee, Hak‐Joo
Kim, Jae‐Hyun

DOI
10.1002/adfm.202113299
URN
urn:nbn:de:101:1-2022021614260646281393
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:35 MESZ

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Beteiligte

  • Jang, Bongkyun
  • Won, Sejeong
  • Kim, Jaegu
  • Kim, Juho
  • Oh, Minsub
  • Lee, Hak‐Joo
  • Kim, Jae‐Hyun

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