Dynamic modeling of liquid crystal display cells using a constant charge approach

Author

Fernández, F. Aníbal ; Deng, HuiFang ; Day, Sally E.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK

Volume

38

Issue

2

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

821

Lastpage

824

Abstract

We present a new formulation for the dynamic modeling of twisted nematic liquid crystal display cells based on a constant charge assumption instead of the commonly used "fixed voltage" model. This formulation is based on a tensor representation of the director field, which is solved using a combination of finite-element and finite-difference methods. It allows the accurate modeling of liquid crystal pixel cells in thin-film-transistor-driven active matrix displays, extensively used in flat panel computer and television displays

Keywords

finite difference methods; finite element analysis; flat panel displays; liquid crystal displays; nematic liquid crystals; tensors; active matrix displays; constant charge approach; director field; dynamic modeling; finite-difference methods; finite-element methods; flat panel displays; liquid crystal display cells; tensor representation; twisted nematic liquid crystal; Active matrix liquid crystal displays; Capacitors; Computer displays; Crystalline materials; Electrodes; Flat panel displays; Liquid crystal displays; Switches; Thin film transistors; Voltage fluctuations;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.996212

Filename

996212