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Proceedings Paper

Bistable liquid-crystal phase grating device for smart window and window display applications
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Paper Abstract

A liquid crystal (LC) phase grating devices have been studied actively because of their outstanding features, such as the high diffraction efficiency, large diffraction angle, no diffraction at the initial state, and the simple fabrication process. It can be used to control the haze value owing to its high diffraction efficiency. Although it can be operated with low power, power consumption needs to be further reduced because it requires power to maintain the diffraction. To reduce the power consumption in a phase grating device, bistable operation, which consumes power only while it is being switched between the states, is necessary. In this paper, we will introduce bistable LC phase grating devices which can provide a translucent state with a high haze value thanks to its strong diffraction. Moreover, it can be operated with very low power as the transparent [translucent] state is maintained even after the applied vertical [in-plane] electric field is removed. We believe that these devices can be one of the new candidates for power-saving smart window or window display applications.

Paper Details

Date Published: 25 February 2020
PDF: 8 pages
Proc. SPIE 11303, Emerging Liquid Crystal Technologies XV, 113030J (25 February 2020); doi: 10.1117/12.2543475
Show Author Affiliations
Jae-Won Huh, Corning Technology Ctr. Korea (Korea, Republic of)
Tae-Hoon Choi, Pusan National Univ. (Korea, Republic of)
Jae-Hyeon Woo, Pusan National Univ. (Korea, Republic of)
Jin-Hun Kim, Pusan National Univ. (Korea, Republic of)
Su-Min Do, Pusan National Univ. (Korea, Republic of)
Jeong-Ho Seo, Pusan National Univ. (Korea, Republic of)
Tae-Hoon Yoon, Pusan National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 11303:
Emerging Liquid Crystal Technologies XV
Liang-Chy Chien; Dirk J. Broer, Editor(s)

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