Wearable red–green–blue quantum dot light-emitting diode array using high-resolution intaglio transfer printing

Deformable full-colour light-emitting diodes with ultrafine pixels are essential for wearable electronics, which requires the conformal integration on curvilinear surface as well as retina-like high-definition displays. However, there are remaining challenges in terms of polychromatic configuration, electroluminescence efficiency and/or multidirectional deformability. Here we present ultra-thin, wearable colloidal quantum dot light-emitting diode arrays utilizing the intaglio transfer printing technique, which allows the alignment of red-green-blue pixels with high resolutions up to 2,460 pixels per inch. This technique is readily scalable and adaptable for low-voltage-driven pixelated white quantum dot…

• NR
  National Research Foundation
• SN
  Seoul National University

  Award: IBS-R006-D1
• MO
  Ministry of Science, ICT and Future Planning

  Award: IBS-R006-D1
• NR
  National Research Foundation of Korea

  Awards: 2012R1A1A1004925, IBS-R006-D1