Flexible high-resolution micro-LED display device with integrations of transparent, conductive, and highly elastic hydrogel

Jiangwen Wang, Jianan Niu, Wei Sha, Xinhuan Dai, Tianci Huang, Qilin Hua, Yong Long, Junfeng Xiao, Weiguo Hu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Computer vision techniques are real-time, immersive, and perceptual human-computer interaction technology. Excellent display effect, dynamic surface flexibility, and safe bio-adhesion are essential for various human–computer interaction applications, such as metaverse interfaces, skin-like sensors, and optoelectronic medical devices. However, realizing the flexible matching of inorganic optoelectronic devices and organisms remains a grand challenge for current display technologies. Here, we proposed a novel strategy by combining the optoelectronic advantages of inorganic micro light emitting diode (micro-LED) display and the extraordinary mechanical/biological compatibility of organic materials to overcome this challenge. A highly elastic (greater than 2000% strain), highly transparent (94% visible light transmittance), biocompatible conductive hydrogel composite electrode layer was fabricated. For the first time, we realized the on-chip electrical interconnection of 4900 LED units to form a blue-green light display patch with high resolution (264 PPI), low power consumption (4.4 mW) and adaptive surface attachment. This work demonstrates an integrated scheme and potential applications of flexible high-resolution microdisplays, such as wearable full-color micro-LED smart curved display devices and conformable biomedical monitoring systems.[Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)11893-11899
Number of pages7
JournalNano Research
Volume16
Issue number9
DOIs
Publication statusPublished - Sept 2023
Externally publishedYes

Keywords

  • InGaN/GaN
  • flexible
  • hydrogel
  • micro light emitting diode (micro-LED)

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Wang, J., Niu, J., Sha, W., Dai, X., Huang, T., Hua, Q., Long, Y., Xiao, J., & Hu, W. (2023). Flexible high-resolution micro-LED display device with integrations of transparent, conductive, and highly elastic hydrogel. Nano Research, 16(9), 11893-11899. https://doi.org/10.1007/s12274-023-5731-x