Optimal content ratio and total content of polymer monomers in polymer stabilized blue phase liquid crystal displays

In polymer-stabilised blue-phase liquid crystal (PSBPLC) display, we have obtained that the optimal content ratio of the polymer monomers RM257 and C12A is 1.225 according to the ideal bonding condition, and the total content of polymer monomers with the lowest hysteresis effect and residual birefri...

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Bibliographic Details
Published in:Liquid crystals 2022-02, Vol.49 (3), p.392-398
Main Authors: Hu, Chunxin, Sha, Mofei, Jia, Mengxiao, Zhang, Bo, Ma, Hongmei, Sun, Yubao
Format: Article
Language:English
Subjects:
Birefringence
Hysteresis
hysteresis effect
Liquid crystal displays
Monomers
Optical microscopes
Photomicrographs
polymer network
Polymer stabilised blue phase liquid crystal
Polymers
residual birefringence
Spatial distribution
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Summary:In polymer-stabilised blue-phase liquid crystal (PSBPLC) display, we have obtained that the optimal content ratio of the polymer monomers RM257 and C12A is 1.225 according to the ideal bonding condition, and the total content of polymer monomers with the lowest hysteresis effect and residual birefringence is 7.5 wt.% through experiment. The polarising optical microscope and scanning electron microscope micrographs show that the polymer network structure of this ratio and this content is uniform, the spatial distribution is obvious, and the optical domain structure of the blue phase is uniform. The hysteresis effect and residual birefringence of the PSBPLC display are 0.84% and 0.55%, respectively. The research results have an important guiding significance for designing PSBPLC devices.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678292.2021.1972479