Analysis of Optical Performance Degradation in an Ion-Doped Liquid-Crystal Cell with Electrical Circuit Modeling

Analysis of Optical Performance Degradation in an Ion-Doped Liquid-Crystal Cell with Electrical Circuit Modeling

We reported electrical circuit modeling to analyze the optical performance degradation in an ion-doped liquid-crystal (LC) cell, which exhibited advantages, such as excellent optical performance and simple switching process, but suffered from long-term reliability issues. When an electric field was...

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Bibliographic Details
Published in:Crystals (Basel) Vol. 10; no. 2; p. 55
Main Authors: Seo, Jeong-Ho, Huh, Jae-Won, Sohn, Ho-Jin, Lim, Eunjung, Yoon, Tae-Hoon
Format: Journal Article
Language:English
Published: MDPI AG 01-02-2020
Subjects:
electrochemical impedance spectroscopy
electrohydrodynamic instability
light shutter
liquid crystals
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Summary:We reported electrical circuit modeling to analyze the optical performance degradation in an ion-doped liquid-crystal (LC) cell, which exhibited advantages, such as excellent optical performance and simple switching process, but suffered from long-term reliability issues. When an electric field was applied to the cell for an extended period of time, the optical performance became nonuniform, and the haze in the opaque state decreased. By measuring the impedance and fitting the measured data by using an equivalent circuit model, we confirmed the changes of the parameters in the electrochemical impedance spectroscopy and electrophysical properties of the ion-doped LC cell with time. According to the measurement of the optical and physical characteristics, the optical performance degradation was caused mainly by the ionic materials.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst10020055