Privacy-protection system using a unidirectional emission waveguide liquid crystal display and an asymmetrical transmission window system

Cheng Kai Liu, Shu Ching Chang, Sheng Wen Wang, Ko Ting Cheng

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

Privacy-protection system using a unidirectional emission waveguide liquid crystal display (WG-LCD) with an electrically switchable vertically aligned polymer network LC (VA-PNLC) cell and an asymmetrical transmission window (ATW) system is reported. The configurations and operations of the WG-LCD, the WG-LCD with a VA-PNLC cell, the ATW system, and the privacy-protection system are elucidated. The ATW system comprises an absorption layer (dichroic dyes doped in two LC layers), a common window, and specific light sources. With the use of the privacy-protection system, people in a private space can see the private information displayed on the WG-LCD with the VA-PNLC cell and the scenes in a public space. Contrarily, people in a public space cannot see the scenes in the private space and the displayed information. The methods to increase optical performance of the privacy-protection system, WG-LCD with a VA-PNLC cell, as well as the method of designing the absorption layer with the light sources in a private space are elucidated. The ATW/privacy-protection system can be applied to various fields in daily life, such as car interior space and home/meeting room.

原文???core.languages.en_GB???
文章編號107175
期刊Optics and Lasers in Engineering
158
DOIs
出版狀態已出版 - 11月 2022

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