Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid Crystals

The decrease of the residual direct current (DC) voltage (V<sub>rdc</sub>) of the anti-parallel liquid crystal (LC) cell using silver (Ag)-doped Polyimide (Ag-d-PI) alignment layers is presented in this manuscript. A series of Ag/PI composite thin layers are prepared by spurting or dopin...

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Main Authors: Yang Liu, Jingxin Sang, Hao Liu, Haiqin Xu, Shuguang Zhao, Jiatong Sun, Ju Hwan Lee, Hae-Chang Jeong, Dae-Shik Seo
Format: Article
Language:English
Published: MDPI AG 2019-03-01
Series:Crystals
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Online Access:https://www.mdpi.com/2073-4352/9/4/181
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author Yang Liu
Jingxin Sang
Hao Liu
Haiqin Xu
Shuguang Zhao
Jiatong Sun
Ju Hwan Lee
Hae-Chang Jeong
Dae-Shik Seo
author_facet Yang Liu
Jingxin Sang
Hao Liu
Haiqin Xu
Shuguang Zhao
Jiatong Sun
Ju Hwan Lee
Hae-Chang Jeong
Dae-Shik Seo
author_sort Yang Liu
collection DOAJ
description The decrease of the residual direct current (DC) voltage (V<sub>rdc</sub>) of the anti-parallel liquid crystal (LC) cell using silver (Ag)-doped Polyimide (Ag-d-PI) alignment layers is presented in this manuscript. A series of Ag/PI composite thin layers are prepared by spurting or doping PI thin layers with Ag nano-particles, and Ag/PI composite thin layers are highly transparent and resistive. LC are homogeneously aligned between 2.0 mg/mL Ag-d-PI alignment layers, and the V<sub>rdc</sub> of the cell that assembled with Ag-d-PI alignment layers decreases about 82%. The decrease of V<sub>rdc</sub> is attributed to the trapping and neutralizing of mobile ions by Ag nano-particles. Regardless of the effect of Ag nano-particles on the conductivity of Ag-d-PI alignment layers, the voltage holding ratio (VHR) of the cells is maintained surprisingly. The experiment results reveal a simple design for a low V<sub>rdc</sub> LC cell.
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spelling doaj.art-31218f6aef1e4ff5840a0b1ab045423c2022-12-22T03:18:41ZengMDPI AGCrystals2073-43522019-03-019418110.3390/cryst9040181cryst9040181Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid CrystalsYang Liu0Jingxin Sang1Hao Liu2Haiqin Xu3Shuguang Zhao4Jiatong Sun5Ju Hwan Lee6Hae-Chang Jeong7Dae-Shik Seo8College of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, ChinaCollege of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, ChinaCollege of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, ChinaCollege of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, ChinaCollege of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, ChinaCollege of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, ChinaInformation Display Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, KoreaInformation Display Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, KoreaInformation Display Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, KoreaThe decrease of the residual direct current (DC) voltage (V<sub>rdc</sub>) of the anti-parallel liquid crystal (LC) cell using silver (Ag)-doped Polyimide (Ag-d-PI) alignment layers is presented in this manuscript. A series of Ag/PI composite thin layers are prepared by spurting or doping PI thin layers with Ag nano-particles, and Ag/PI composite thin layers are highly transparent and resistive. LC are homogeneously aligned between 2.0 mg/mL Ag-d-PI alignment layers, and the V<sub>rdc</sub> of the cell that assembled with Ag-d-PI alignment layers decreases about 82%. The decrease of V<sub>rdc</sub> is attributed to the trapping and neutralizing of mobile ions by Ag nano-particles. Regardless of the effect of Ag nano-particles on the conductivity of Ag-d-PI alignment layers, the voltage holding ratio (VHR) of the cells is maintained surprisingly. The experiment results reveal a simple design for a low V<sub>rdc</sub> LC cell.https://www.mdpi.com/2073-4352/9/4/181liquid crystalalignment layerresidual DCAg nano-particles doping
spellingShingle Yang Liu
Jingxin Sang
Hao Liu
Haiqin Xu
Shuguang Zhao
Jiatong Sun
Ju Hwan Lee
Hae-Chang Jeong
Dae-Shik Seo
Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid Crystals
Crystals
liquid crystal
alignment layer
residual DC
Ag nano-particles doping
title Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid Crystals
title_full Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid Crystals
title_fullStr Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid Crystals
title_full_unstemmed Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid Crystals
title_short Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid Crystals
title_sort decreasing the residual dc voltage by neutralizing the charged mobile ions in liquid crystals
topic liquid crystal
alignment layer
residual DC
Ag nano-particles doping
url https://www.mdpi.com/2073-4352/9/4/181
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