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Proceedings Paper

Control of haze value using electrically switchable liquid crystal phase grating devices
Author(s): Tae-Hoon Choi; Jae-Hyeon Woo; Jae-Won Huh; Byoung-Gyu Jeon; Tae-Hoon Yoon
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Paper Abstract

We introduce an electrically switchable two-dimensional liquid crystal (LC) phase grating device for window display applications. The device consists of the top and bottom substrates with crossed interdigitated electrodes and vertically aligned LCs sandwiched between the two substrates. The device, switchable between the transparent and translucent states by applying an electric field, can provide high haze by the strong diffraction effect with little dependence on the azimuth angle owing to a large spatial phase difference. This device exhibits outstanding features, such as a low operating voltage, high transmittance, and wide viewing angle in the transparent state and a high haze in the translucent state. In addition, the LC device can provide sub-millisecond switching between the transparent and translucent states with the use of an overdrive scheme and a vertical trigger pulse.

Paper Details

Date Published: 8 February 2018
PDF: 9 pages
Proc. SPIE 10555, Emerging Liquid Crystal Technologies XIII, 105551E (8 February 2018); doi: 10.1117/12.2289272
Show Author Affiliations
Tae-Hoon Choi, Pusan National Univ. (Korea, Republic of)
Jae-Hyeon Woo, Pusan National Univ. (Korea, Republic of)
Jae-Won Huh, Pusan National Univ. (Korea, Republic of)
Byoung-Gyu Jeon, Pusan National Univ. (Korea, Republic of)
Tae-Hoon Yoon, Pusan National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 10555:
Emerging Liquid Crystal Technologies XIII
Liang-Chy Chien, Editor(s)

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