Organic light emitting board for dynamic interactive display

Eui Hyuk Kim, Sung Hwan Cho, Ju Han Lee, Beomjin Jeong, Richard Hahnkee Kim, Seunggun Yu, Tae-Woo Lee, Wooyoung Shim and Cheolmin Park ()
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Eui Hyuk Kim: Yonsei University
Sung Hwan Cho: Yonsei University
Ju Han Lee: Yonsei University
Beomjin Jeong: Yonsei University
Richard Hahnkee Kim: Yonsei University
Seunggun Yu: Yonsei University
Tae-Woo Lee: Seoul National University
Wooyoung Shim: Yonsei University
Cheolmin Park: Yonsei University

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract Interactive displays involve the interfacing of a stimuli-responsive sensor with a visual human-readable response. Here, we describe a polymeric electroluminescence-based stimuli-responsive display method that simultaneously detects external stimuli and visualizes the stimulant object. This organic light-emitting board is capable of both sensing and direct visualization of a variety of conductive information. Simultaneous sensing and visualization of the conductive substance is achieved when the conductive object is coupled with the light emissive material layer on application of alternating current. A variety of conductive materials can be detected regardless of their work functions, and thus information written by a conductive pen is clearly visualized, as is a human fingerprint with natural conductivity. Furthermore, we demonstrate that integration of the organic light-emitting board with a fluidic channel readily allows for dynamic monitoring of metallic liquid flow through the channel, which may be suitable for biological detection and imaging applications.

Date: 2017
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DOI: 10.1038/ncomms14964

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