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3 October 2022 Aligned polymer dispersed liquid crystal film and its application in light efficiency enhancement of quantum dot backlight (Conference Presentation)
Suman Halder, Yunho Shin, Ziyuan Zhou, Xinfang Zhang, Lang Hu, Deng-Ke Yang
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Proceedings Volume PC12207, Liquid Crystals XXVI; PC1220704 (2022) https://doi.org/10.1117/12.2633696
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States
Abstract
We developed a unidirectionally aligned PDLC film with liquid crystal (LC) droplets permanently aligned along the film’s normal direction using the polymer stabilization method. Due to the unidirectional alignment of LC droplets, the aligned PDLC film shows selective scattering: it scatters light with a large incident angle but remains transparent for the small incident angles. We studied the selective scattering properties of aligned PDLC and optimized its electro-optical performance to use as a light efficiency enhancement film. The optimized aligned PDLC film increases the light efficiency of a Quantum Dot (QD) backlight film by about 20%. This aligned PDLC film can also improve the light efficiency of other flat panel displays like OPED, MLED, etc.
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Suman Halder, Yunho Shin, Ziyuan Zhou, Xinfang Zhang, Lang Hu, and Deng-Ke Yang "Aligned polymer dispersed liquid crystal film and its application in light efficiency enhancement of quantum dot backlight (Conference Presentation)", Proc. SPIE PC12207, Liquid Crystals XXVI, PC1220704 (3 October 2022); https://doi.org/10.1117/12.2633696
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KEYWORDS
Liquid crystals
Polymer thin films
Polymers
Quantum dots
Quantum efficiency
Light scattering
Scattering
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