Stabilization of in situ self-assembled homeotropic alignment layer for liquid crystals by photopolymerization of reactive monomer

New stabilization method for in situ self-assembled homeotropic alignment layer was proposed. The benzoic acid derivative and mesogenic diacrylate were employed as in situ alignment agent and reactive monomer (RM), respectively. This alignment layer offers stable vertical alignment (VA) of liquid cr...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2017-09, Vol.654 (1), p.6-11
Main Authors: Son, Intae, Kim, Jae Hong, Lee, Byungsun, Kim, Chunho, Yoo, Ji Yong, Cho, Chi Heong, Lee, Jun Hyup
Format: Article
Language:English
Subjects:
Alignment
Benzoic acid
Crystals
Direct current
Image sticking
liquid crystal
Liquid crystals
Monomers
Photopolymerization
polymer stabilization
self-assembly
Stabilization
vertical alignment
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Summary:New stabilization method for in situ self-assembled homeotropic alignment layer was proposed. The benzoic acid derivative and mesogenic diacrylate were employed as in situ alignment agent and reactive monomer (RM), respectively. This alignment layer offers stable vertical alignment (VA) of liquid crystals (LCs) via photopolymerization of RM. The formation process of the stabilized alignment layer is very simple and involves doping of the VA agent and RM. The fabricated LC cell exhibited low residual direct current and stable VA properties during long term operation. Our definitive alignment method is useful in fabricating LC devices requiring high reliability.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2017.1354665