Image quality enhancement of transparent waveguide display using a twisted nematic mode polymer-stabilized liquid crystal

Heng Yi Tseng, Kuan Wu Lin, Li Min Chang, Guan Yu Lu, Cheng Chang Li, Sheng Wen Wang, Ko Ting Cheng, Tsung Hsien Lin

研究成果: 雜誌貢獻期刊論文同行評審

摘要

In this study, a twisted nematic mode polymer-stabilized liquid crystal (TN mode PSLC) integrated with a crossed polarizer was used to create a transparent waveguide display. When a voltage was applied, the PSLC scattered the waveguide light with a high polarization selectivity such that no substantial loss of the outgoing light intensity was observed after integrating the polarizer. However, with a crossed polarizer, in the ON state, the background light was not only scattered but also absorbed by the analyzer. Using this device configuration, with a 12 μm cell gap and 7% monomer concentration, we successfully realized a normally transparent waveguide display. The contrast ratio of the waveguide outgoing light was 26 and that of the undesired background reached 90. This device can display images due to waveguide edge-lit light scattering and simultaneously block the background information to improve the image quality.

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頁(從 - 到)5255-5264
頁數10
期刊Optics Express
30
發行號4
DOIs
出版狀態已出版 - 14 2月 2022

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