Title :
Theoretical and experimental study of nematic liquid crystal display cells using the in-plane-switching mode
Author :
Di Pasquale, Fabrizio ; Deng, Hui Fang ; Fernández, F. Aníbal ; Day, Sally E. ; Davies, J. Brian ; Johnson, M.T. ; van der Put, A.A. ; van de Eerenbeemd, J.M.A. ; van Haaren, J.A.M.M. ; Chapman, Jeff A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
fDate :
4/1/1999 12:00:00 AM
Abstract :
In this paper a two-dimensional (2-D) dynamic model, based on a tensor formulation and solved numerically by combining finite elements and finite differences, is proposed and used for analyzing nematic liquid crystal (LC) test cells with interdigital electrodes. We compare theoretical and experimental results concerning the switching behavior, response mechanism, and viewing angle characteristics of nematic LC pixel structures which use the in-plane-switching (IPS) mode. The good agreement observed between theory and experiment in terms of electro-optical properties validates our modeling and demonstrates its potential for design optimization. We show that the proposed LC test cells, using the in-plane-switching mode, ensure switching-ON and -OFF response times of 22 and 28 ms, respectively, and excellent viewing angle characteristics
Keywords :
large screen displays; liquid crystal displays; nematic liquid crystals; tensors; 22 ms; 28 ms; 2D dynamic model; design optimization; electro-optical properties; in-plane-switching mode; interdigital electrodes; nematic liquid crystal display cells; response mechanism; response times; switching behavior; tensor formulation; viewing angle characteristics; Application software; Delay; Electrodes; Laboratories; Liquid crystal displays; Liquid crystals; Tensile stress; Testing; Two dimensional displays; Voltage;
Journal_Title :
Electron Devices, IEEE Transactions on
