Human-Interactive, Active-Matrix Displays for Visualization of Tactile Pressures

Jiuk Jang, Byungkook Oh, Subin Jo, Sunghee Park, Hyeon Seok An, Seunghee Lee, Woon Hyung Cheong, Seunghyup Yoo, Jang Ung Park

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36 Citations (Scopus)


Human-interactive displays involve the interfacing of a stimuli-responsive sensor with a human-readable response. Human-readable responses include the five recognized senses, i.e., sight (vision), hearing (audition), taste (gustation), smell (olfaction), and touch (somatosensation). Vision is considered to be the most informative human stimulus so that the visualization of electrical, thermal, and mechanical data is important for various applications. Herein, the fabrication of human-interactive displays is demonstrated in which active-matrix arrays of pressure-sensitive Si transistors with air dielectric layers are fully integrated with pixels of organic light-emitting diodes (OLEDs). In this way, the luminance of the individual OLED pixels can be increased locally by pressing the display, and the luminance is dependent on the magnitude of the applied pressure. Furthermore, the air dielectric layer of transistors provides outstanding electrical properties, including high transconductance and negligible hysteresis. 3D integration of these transistors with dual-side emissive OLED pixels is also demonstrated. Local pressing increases the light intensity of OLED pixel and then the underlaid Si channel can absorb this light successively to generate additional photocurrents from the pressure-sensitive transistor, further enhancing its sensitivity. This human-interactive display can visualize tactile pressure directly, suggesting the substantial promise as next generation displays for intelligent human-machine interfacing.

Original languageEnglish
Article number1900082
JournalAdvanced Materials Technologies
Issue number7
Publication statusPublished - 2019 Jul

Bibliographical note

Funding Information:
J.J., B.O., and S.J. contributed equally to this work. This work was supported by the Ministry of Science & ICT and the Ministry of Trade, Industry and Energy (MOTIE) of Korea through the National Research Foundation (2016R1A2B3013592 and 2016R1A5A1009926), the Bio & Medical Technology Development Program (2018M3A9F1021649), the Nano Material Technology Development Program (2015M3A7B4050308 and 2016M3A7B4910635), and the Industrial Technology Innovation Program (10080577). Also, the authors thank financial support by the Institute for Basic Science (IBS-R026-D1) and the Research Program (2018-22-0194) funded by Yonsei University.

Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering


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