Wireless Stand-Alone Trimodal Interactive Display Enabled by Direct Capacitive Coupling

Jihye Jang, Seung Won Lee, Seokyeong Lee, Chang Eun Lee, Eui Hyuk Kim, Wookyeong Jin, Sejeong Lee, Youngkyung Kim, Jin Woo Oh, Youngdoo Jung, Ho Yeon Kim, Hyungseok Yong, Jeongok Park, Sangmin Lee, Cheolmin Park

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


With recent advances in interactive displays, the development of a stand-alone interactive display with no electrical interconnection is of great interest. Here, a wireless stand-alone interactive display (WiSID), enabled by direct capacitive coupling, consisting of three layers: two in-plane metal electrodes separated by a gap, a composite layer for field-induced electroluminescence (EL) and inverse piezoelectric sound, and a stimuli-responsive layer, from bottom to top, is presented. Alternating current power necessary for field-induced EL and inverse piezoelectric sound is wirelessly transferred from a power unit, with two in-plane electrodes remotely separated from the WiSID. The unique in-plane power transfer through the stimuli-sensitive polar bridge allows stand-alone operation of the WiSID, making it suitable for the wireless dynamic monitoring of medical fluids. Moreover, a haptic wireless stand-alone trimodal interactive display mounted on a human finger is demonstrated, whereby touch is wirelessly displayed in various outputs of EL, inverse piezoelectric sound, and tactile vibration, making it suitable for a wireless three-mode smart braille display.

Original languageEnglish
Article number2204760
JournalAdvanced Materials
Issue number37
Publication statusPublished - 2022 Sept 15

Bibliographical note

Funding Information:
J.J. and S.W.L. contributed equally to this work. This study was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (2018M3D1A1058536). This study was also supported by a grant from the National Research Foundation of Korea (NRF) funded by the Korean government (MEST) (No. 2020R1A2B5B03002697). This work was supported by the Korea Medical Device Development Fund grant funded by the Korea government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health & Welfare, the Ministry of Food and Drug Safety) (Project Number: 9991006750, KMDF_PR_20200901_0077 and 1711138098, KMDF_PR_20200901_0077). This work was also supported by the Brain Korea 21 FOUR Project funded by National Research Foundation (NRF) of Korea, Yonsei University College of Nursing (F21JB7504007) and a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (grant number: HI19C1344).

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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