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http://dx.doi.org/10.3807/JOSK.2013.17.5.428

Flexible Reflective Color Displays using Thermochromic Pigments  

Heo, Kyong Chan (Department of Physics, Yeungnam University)
Sohn, Youngku (Department of Chemistry, Yeungnam University)
Yi, Jonghoon (Department of Physics, Yeungnam University)
Kwon, Jin Hyuk (Department of Physics, Yeungnam University)
Gwag, Jin Seog (Department of Physics, Yeungnam University)
Publication Information
Journal of the Optical Society of Korea / v.17, no.5, 2013 , pp. 428-432 More about this Journal
Abstract
This research presents a flexible reflective thermochromic display (TCD) comprised of thermochromic pigments and a patterned indium tin oxide (ITO) film coated on a polyethylene naphthalate (PEN) substrate, and the display's thermo-optical characteristics. The display showed maximum red, green, and blue reflectances of 30%, 38%, and 29%, respectively. Furthermore, the display exhibited a continuous grey color when the temperature was changed continuously. As a flexible display, the display showed reliable thermo-optical performance without image damage even when highly bent. We expect the proposed TCD will be used in outdoor information display applications where low cost is a key factor.
Keywords
Thermochromic display; Reflective display; Flexible display; Thermochromic pigmnet;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 H. Sato, H. Fujikae, H. Kikuchi, and T. Kurita, "Bending tolerance of ferroelectric liquid crystal with polymer walls fastening plastic substrates," Jpn. J. Appl. Phys. Part 2 42, L476-L478 (2003).   DOI   ScienceOn
2 H. Sato, H. Fujikae, Y. Iino, M. Kawakita, and H. Kikuchi, "Flexible grayscale ferroelectric liquid crystal device containing polymer walls and networks," Jpn. J. Appl. Phys. Part 1 41, 5302-5306 (2002).   DOI
3 D.-W. Kim, C.-J. Yu, Y.-W. Lim, J.-H. Na, and S.-D. Lee, "Mechanical stability of a flexible ferroelectric liquid crystal display with a periodic array of columnar spacers," Appl. Phys. Lett. 87, 051917-1-05917-3 (2005).   DOI   ScienceOn
4 A. Henzen, N. Ailenei, F. V.Reeth, G. Vansichem, R. W. Zehner, and K. Amundson, "An electronic ink low latency drawing tablet," in Proc. SID Int. Symp. Digest Tech. Papers (Washington State Convention and Trade Center, Seattle, Washington, USA, 2004), vol. 35, pp. 1070-1073.
5 L. Liu, S. Pen, W. Wen, and P. Sheng, "Paperlike thermochromic display," Appl. Phys. Lett. 90, 213508-1-213508-3 (2007).   DOI   ScienceOn
6 H. A. Seeboth, J. Kriwanek, and R. Vetter, "Novel chromogenic polymer gel networks for hybrid transparency and color control with temperature," Adv. Mater. (Weinheim, Ger.) 12, 1424-1426 (2000).   DOI
7 Y. Noguchi, T. Sekitani, and T. Someya, "Organic-transistorbased flexible pressure sensors using ink-jet-printed electrodes and gate dielectric layers," Appl. Phys. Lett. 89, 253507-1-253507-3 (2006).   DOI   ScienceOn
8 O. Yarimaga, M. Im, B. Gu, T. W. Kim, Y. K. Jung, H. G. Park, and Y. K. Choi, "A thermally actuated organic display device using thermo-chromatic polymer composite film with self-aligned patterns," in Proc. IEEE MEMS Technical Digest (Tucson, Arizona, USA, 2008), pp. 750-753.
9 M. Seredyuk, A. B. Gaspar, V. Ksenofontov, S. Reiman, Y. Galyametdinov, W. Haase, R. Vetter, and P. Gutlich, "Room temperature operational thermochromic liquid crystals," Chem. Mater. 18, 2513-2519 (2006).   DOI   ScienceOn
10 A. Mills and A. Lepre, "Development of novel thermochromic plastic films for optical temperature sensing," Analyst (Cambridge, UK) 124, 685-689 (1999).   DOI   ScienceOn
11 M. G. Baron, M. Elie, M. G. Baron, and M. Elie, "Temperature sensing using reversible thermochromic polymeric films," Sens. Actuators B Chem. 90, 271-275 (2003).   DOI   ScienceOn
12 O. Yarimaga, M. Im, Y.-K. Choi, T. W. Kim, Y. K. Jung, H. G. Park, S. Lee, and J.-M. Kim, "A color display system based on thermochromic conjugated polydiacetylene superamolecules," Macromol. Res. 18, 404-407 (2010).   DOI   ScienceOn
13 A. Seeboth, R. Ruhmann, and O. Muhling, "Thermotropic and thermochromic polymer based materials for adaptive solar control," Materials 3, 5143-5168 (2010).   DOI
14 K. C. Heo, Y. Sohn, J. Yi, J. H. Kwon, P. K. Son, and J. S. Gwag, "Reflective color display using thermochromic pigments," Appl. Opt. 51, 4246-4249 (2012).   DOI
15 http://www.hwsands.com/category/141.aspx.
16 D. C. Maclaren and M. A. White, "Design rules for reversible thermochromic mixtures," J. Mater. Chem. 40, 669-676 (2005).
17 G. Shimizu, Shiga, and Y. Hayasshi, "Thermochromic composition," U. S. Patent, US4717710 (5 January 1998).