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Dye-Doped Polymer Dispersed Liquid Crystal Films for Flexible Displays

Title
Dye-Doped Polymer Dispersed Liquid Crystal Films for Flexible Displays
Authors
Yang, KJ[Yang, Kee-Jeong]Lee, SC[Lee, Seung-Chul]Choi, BD[Choi, Byeong-Dae]
DGIST Authors
Yang, KJ[Yang, Kee-Jeong]Choi, BD[Choi, Byeong-Dae]
Issue Date
2010-05
Citation
Japanese Journal of Applied Physics, 49(5)
Type
Article
Article Type
Article; Proceedings Paper
Keywords
Bead MillingBiodegradable PolymersBipolar ConfigurationBlue DyesColor DifferenceContrast RatioDichroic DyesDriving VoltagesDrop BreakupDrop FormationDroplet SizesDye-DopedDye-Doped PolymerDye CompositionElectro-Optic CharacteristicFlexible DisplaysLiquid-Crystal DropletsLiquid Crystal DisplaysLiquid CrystalsLiquid FilmsMilling (Machining)Nematic Liquid CrystalsPdlc FilmsPlastic FilmsPolymer Dispersed Liquid Crystals (PDLC)Polymer FilmsSplay Deformations
ISSN
0021-4922
Abstract
Red, green, and blue dyes were doped to polymer dispersed liquid crystal (PDLC) films for flexible display applications. Dichroic dye-doped liquid crystal droplets had a bipolar configuration. The E7-DG6071-dye composition showed better chromaticity data than other compositions. The small-particle-size red-dye-doped PDLC film showed good color differences. To improve the color difference, the dye particle size has to be small, and the bead milling process can make dye particles small. In this system, the bigger the liquid crystal droplet size, the higher the PDLC film driving voltage (Von), except in the LC-DG6071-red dye composition. This is the reason that the splay deformation increase is greater than the droplet size increase. In the electro-optic characteristics of dye-doped PDLC film, the TL205-DG6071-red dye composition had the lowest Von and the TL205-DG7052-red dye had the highest contrast ratio. © 2010 The Japan Society of Applied Physics.
URI
http://hdl.handle.net/20.500.11750/3526
DOI
10.1143/JJAP.49.05EA05
Publisher
Japan Society of Applied Physics
Related Researcher
Files:
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Collection:
Intelligent Devices and Systems Research Group1. Journal Articles
Division of Nano∙Energy Convergence Research1. Journal Articles


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