標題: Ionic effects on electro-optics and residual direct current voltages of twisted nematic liquid crystal cells
作者: Chen, Po-An
Yang, Kei-Hsiung
光電學院
College of Photonics
關鍵字: Liquid crystal;electro-optics of TN liquid crystal;ions in nematic liquid crystal;ions in polyimide film
公開日期: 1-Jan-2018
摘要: By using electro-optical and dielectric absorption [1-4] measurements, we report our investigations of ionic effects on electro-optics and residual direct current voltages (VrDCs) of two polyimide (PI)-aligned twisted nematic (TN) cells with same liquid crystal mixture but different PI-alignment materials. We have also carried out new experimental methods to find out that the observed VrDCs were caused by LC-PI-interfacial trapped ions generated and transported from the LC medium for one TN cell, and from the PI layers for the other TN cell. Our measured VrDCs indicated that the former had two different exponential-decay rates similar to the published results by M. Mizusaki et al. [2] but the latter had only a single exponential-decay rate. [GRAPHICS] .
URI: http://dx.doi.org/10.1080/02678292.2017.1404154
http://hdl.handle.net/11536/145090
ISSN: 0267-8292
DOI: 10.1080/02678292.2017.1404154
期刊: LIQUID CRYSTALS
Volume: 45
起始頁: 1032
結束頁: 1039
Appears in Collections:Articles