Flexible micro-LED display and its application in Gbps multi-channel visible light communication

Luhing Hu; Jaeyong Choi; Sumin Hwangbo; Do Hoon Kwon; Bongkyun Jang; Seunghyeon Ji; Jae Hyun Kim; Sang Kook Han; Jong Hyun Ahn

doi:10.1038/s41528-022-00234-z

Flexible micro-LED display and its application in Gbps multi-channel visible light communication

Luhing Hu, Jaeyong Choi, Sumin Hwangbo, Do Hoon Kwon, Bongkyun Jang, Seunghyeon Ji, Jae Hyun Kim, Sang Kook Han, Jong Hyun Ahn

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A flexible full-color micro-LED display with high mechanical robustness was fabricated by printing quantum dots (QDs) on a blue micro-LED array using standard photolithography. The red and green colors yielded from QDs exhibit a better color gamut than conventional color filters. The light conversion efficiency was enhanced by adding TiO₂ nanoparticles to the QD-photoresist composite. This full-color micro-LED display was successfully mounted on various unusual substrates such as curved glass, fabrics, and human skin, enabling diverse optoelectronic applications. In addition, wireless multi-channel visible light communication (VLC) based on the wavelength-division-multiplexing orthogonal-frequency-division-multiplexing (WDM-OFDM) technique was demonstrated using a QD-based color micro-LED panel. A high data transmission rate of 1.9 Gbps was successfully obtained owing to the high electrical–optical modulation bandwidth of the QD-based micro-LED panel.

Original language	English
Article number	100
Journal	npj Flexible Electronics
Volume	6
Issue number	1
DOIs	https://doi.org/10.1038/s41528-022-00234-z
Publication status	Published - 2022 Dec

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) funded by the Korean government (MSIT) (NRF-2015R1A3A2066337), and the Research Program of Korea Institute of Machinery & Materials (NK230D).

Publisher Copyright:
© 2022, The Author(s).

All Science Journal Classification (ASJC) codes

Materials Science(all)
Electrical and Electronic Engineering

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10.1038/s41528-022-00234-z

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title = "Flexible micro-LED display and its application in Gbps multi-channel visible light communication",

abstract = "A flexible full-color micro-LED display with high mechanical robustness was fabricated by printing quantum dots (QDs) on a blue micro-LED array using standard photolithography. The red and green colors yielded from QDs exhibit a better color gamut than conventional color filters. The light conversion efficiency was enhanced by adding TiO2 nanoparticles to the QD-photoresist composite. This full-color micro-LED display was successfully mounted on various unusual substrates such as curved glass, fabrics, and human skin, enabling diverse optoelectronic applications. In addition, wireless multi-channel visible light communication (VLC) based on the wavelength-division-multiplexing orthogonal-frequency-division-multiplexing (WDM-OFDM) technique was demonstrated using a QD-based color micro-LED panel. A high data transmission rate of 1.9 Gbps was successfully obtained owing to the high electrical–optical modulation bandwidth of the QD-based micro-LED panel.",

author = "Luhing Hu and Jaeyong Choi and Sumin Hwangbo and Kwon, {Do Hoon} and Bongkyun Jang and Seunghyeon Ji and Kim, {Jae Hyun} and Han, {Sang Kook} and Ahn, {Jong Hyun}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) funded by the Korean government (MSIT) (NRF-2015R1A3A2066337), and the Research Program of Korea Institute of Machinery & Materials (NK230D). Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

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doi = "10.1038/s41528-022-00234-z",

language = "English",

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AU - Hu, Luhing

AU - Choi, Jaeyong

AU - Hwangbo, Sumin

AU - Kwon, Do Hoon

AU - Jang, Bongkyun

AU - Ji, Seunghyeon

AU - Kim, Jae Hyun

AU - Han, Sang Kook

AU - Ahn, Jong Hyun

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) funded by the Korean government (MSIT) (NRF-2015R1A3A2066337), and the Research Program of Korea Institute of Machinery & Materials (NK230D). Publisher Copyright: © 2022, The Author(s).

PY - 2022/12

Y1 - 2022/12

N2 - A flexible full-color micro-LED display with high mechanical robustness was fabricated by printing quantum dots (QDs) on a blue micro-LED array using standard photolithography. The red and green colors yielded from QDs exhibit a better color gamut than conventional color filters. The light conversion efficiency was enhanced by adding TiO2 nanoparticles to the QD-photoresist composite. This full-color micro-LED display was successfully mounted on various unusual substrates such as curved glass, fabrics, and human skin, enabling diverse optoelectronic applications. In addition, wireless multi-channel visible light communication (VLC) based on the wavelength-division-multiplexing orthogonal-frequency-division-multiplexing (WDM-OFDM) technique was demonstrated using a QD-based color micro-LED panel. A high data transmission rate of 1.9 Gbps was successfully obtained owing to the high electrical–optical modulation bandwidth of the QD-based micro-LED panel.

AB - A flexible full-color micro-LED display with high mechanical robustness was fabricated by printing quantum dots (QDs) on a blue micro-LED array using standard photolithography. The red and green colors yielded from QDs exhibit a better color gamut than conventional color filters. The light conversion efficiency was enhanced by adding TiO2 nanoparticles to the QD-photoresist composite. This full-color micro-LED display was successfully mounted on various unusual substrates such as curved glass, fabrics, and human skin, enabling diverse optoelectronic applications. In addition, wireless multi-channel visible light communication (VLC) based on the wavelength-division-multiplexing orthogonal-frequency-division-multiplexing (WDM-OFDM) technique was demonstrated using a QD-based color micro-LED panel. A high data transmission rate of 1.9 Gbps was successfully obtained owing to the high electrical–optical modulation bandwidth of the QD-based micro-LED panel.

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Flexible micro-LED display and its application in Gbps multi-channel visible light communication

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