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9 March 2022 Real-color displays with random depolarization film designed with respect to birefringence and particle size
Shizuki Sasaki, Yasuhiro Koike
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Proceedings Volume PC12025, Ultra-High-Definition Imaging Systems V; PC120250C (2022) https://doi.org/10.1117/12.2608371
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
The random depolarization film (RDF) randomizes polarization of the light and resolves blackout and color change problems of existing displays. The RDF consists of a polymer film doped with birefringent particles such as calcite; however, the dopant particles slightly scatter the light, which degrades the image sharpness. In this study, we improve the image sharpness using RDF designed by focusing on the birefringence and particle size of the dopants. Furthermore, the RDF achieved chromaticity changes of less than human eyes can recognize because it showed various interference colors with maximum retardation of 600 nm.
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Shizuki Sasaki and Yasuhiro Koike "Real-color displays with random depolarization film designed with respect to birefringence and particle size", Proc. SPIE PC12025, Ultra-High-Definition Imaging Systems V, PC120250C (9 March 2022); https://doi.org/10.1117/12.2608371
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KEYWORDS
Particles
Birefringence
Calcite
Light scattering
Liquid crystals
Organic light emitting diodes
Polymer thin films
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