ABSTRACT
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.
Graphical abstract
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (NSFC) (Grant No. 51573006, 51573003 and 51773017), the Joint Foundation of the Equipment Pre-Research Chinese Ministry of Education (Grant No. 6141A020222) and the State Key Laboratory for Advanced Metals and Materials (Grant No. 2018Z-06).
Disclosure statement
No potential conflict of interest was reported by the authors.
Supplementary material
The supplementary data for this article can be accessed here.