Title :
Long Term Stability of Polymer Stabilized Blue Phase Liquid Crystals
Author :
Joshi, Pankaj ; De Smet, Jelle ; Xioabing Shang ; Willekens, Oliver ; Cuypers, Dieter ; Van Steenberge, Geert ; Chojnowska, Olga ; Kula, Przemyslaw ; Van Vlierberghe, Sandra ; Dubruel, Peter ; De Smet, Herbert
Author_Institution :
Dept. of Electron. & Inf. Syst., Ghent Univ., Ghent, Belgium
Abstract :
The issue of long term stability of polymer stabilized blue phase liquid crystals was investigated. It was found that for certain liquid crystals and commonly used chiral dopant combinations, polymer stabilized blue phase liquid crystals develop dendrite like structures. These features are highly scattering and are detrimental to the uniformity of texture. Various possible causes were looked into and it was identified that crystallization of the chiral dopant leads to dendrites and a possible remedy is proposed.
Keywords :
chirality; crystallisation; dendrites; liquid crystal phase transformations; liquid crystal polymers; liquid structure; polymer solutions; texture; chiral dopant; crystallization; dendrite like structures; long-term stability; polymer stabilized blue phase liquid crystals; texture uniformity; Filling; Liquid crystal displays; Liquid crystals; Photonics; Polymers; Temperature distribution; Thermal stability; Chiral dopants; dendrites; long term stability; polymer stabilized blue phase liquid crystals (BPLCs);
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2015.2431442
