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Dye-Doped Polymer Dispersed Liquid Crystal Films for Flexible Displays
- Dye-Doped Polymer Dispersed Liquid Crystal Films for Flexible Displays
- 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
- Japanese Journal of Applied Physics, 49(5)
- Article Type
- Article; Proceedings Paper
- Bead Milling; Biodegradable Polymers; Bipolar Configuration; Blue Dyes; Color Difference; Contrast Ratio; Dichroic Dyes; Driving Voltages; Drop Breakup; Drop Formation; Droplet Sizes; Dye-Doped; Dye-Doped Polymer; Dye Composition; Electro-Optic Characteristic; Flexible Displays; Liquid-Crystal Droplets; Liquid Crystal Displays; Liquid Crystals; Liquid Films; Milling (Machining); Nematic Liquid Crystals; Pdlc Films; Plastic Films; Polymer Dispersed Liquid Crystals (PDLC); Polymer Films; Splay Deformations
- 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.
- Japan Society of Applied Physics
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