Journal
LIQUID CRYSTALS
Volume 46, Issue 15, Pages 2235-2244Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2019.1618937
Keywords
Display devices; viewing angle characteristics; polymer dispersed liquid crystals; microlouver structures
Funding
- State Key Laboratory for Advanced Metals and Materials [2018Z-06]
- Joint Foundation of the Equipment Pre-Research Chinese Ministry of Education [6141A020222]
- National Natural Science Foundation of China [51573003, 51573006, 51773017]
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Display devices with the narrow viewing angle (NVA) and the wide viewing angle (WVA) characteristics can simultaneously meet the demands for privacy protection and information sharing. Herein, we propose a novel method for fabricating a controllable anti-peeping device with a laminated structure of microlouver and polymer dispersed liquid crystals (PDLCs) film, and this device can be reversibly switched between a wider viewing angle range (VAR) for the WVA mode and a narrower viewing angle range (VAR) for the NVA mode at 0 V and 8 V, respectively. Also, the VARs of the controllable anti-peeping device can be dynamically tuned by varying dimensions of the microlouver structures and applying various voltages across the PDLCs film from 0 V to 8 V. The as-fabricated device provides display devices with controllable viewing angle characteristics, which can be applied in the display field with fascinating and practical functions. [GRAPHICS] .
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