Abstract
The electro-optical properties of dye-doped Polymer Dispersed Liquid Crystal (PDLC) films were examined as a function of the polymer UV curing temperature, injection temperature and applied voltage. In addition, the effects of the morphology on the electro-optical properties were examined. The contrast ratio and driving voltage of the PDLC films were affected considerably by changes in the UV curing temperature but the injection temperature had a much lesser effect. The color difference and electro-optic characteristics of the dye doped PDLC film were investigated, where the PDLC films were doped with RGB dyes for flexible display applications. The red-dye-doped PDLC film with small-sized particles showed good color differences. In this dye-doped PDLC system, the film driving voltage (Von) of the PDLC increased with increasing liquid crystal droplet size, except for the TL205-prepolymer-red dye. In particular, the red-dye doped PDLC composition showed the lowest Von in the electro-optic characteristics of the dye-doped PDLC film.
| Original language | English |
|---|---|
| Pages (from-to) | 543-548 |
| Number of pages | 6 |
| Journal | Journal of Industrial and Engineering Chemistry |
| Volume | 17 |
| Issue number | 3 |
| DOIs | |
| State | Published - 25 May 2011 |
Bibliographical note
Funding Information:Authors appreciate the financial support for this work under Seoul R&BD program (#10890) and Kwangwoon University (2010).
Keywords
- Color difference
- Driving voltage
- Dye-doped polymer dispersed liquid crystal
- Electro-optical property
- Morphology