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Polystyrene Blend Alignment Layers for High Pretilt Angle Control
- Authors
- Kang, Hyo; Kang, Daeseung
- Issue Date
- 22-Mar-2016
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Alignment; liquid crystal; pretilt angle; polystyrene
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.626, no.1, pp.207 - 214
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 626
- Number
- 1
- Start Page
- 207
- End Page
- 214
- ISSN
- 1542-1406
- Abstract
- We prepared blend alignment layer based on 4-ethylphenoxymethyl-substituted polystyrene (P4EP) and polystyrene containing 7-hydroxycoumarin (P7COU) for liquid crystal (LC) alignment. Stable and uniform vertical LC cells having pretilt angles adjustable from 90 degrees to 81.2 degrees were obtained from these polystyrene films having molar contents of P4EP and P7COU in the ranges of 100-70 and 0-30mol%, respectively. The LC alignment behavior was well correlated with the wettability of the polymer films. These polystyrene blends having good solubility in many organic solvents and their films having low process (curing) temperature can be candidates for LC alignment layer in the flexible display. This study contributes to the latest efforts to develop new alignment layers for pretilt angle control.
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Related Researcher
- Kang, Daeseung
- College of Engineering (School of Electrical Engineering)