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Optical Engineering

Electrical modeling of tristate antiferroelectric liquid crystal devices
Author(s): Juan Carlos Torres Zafra; Isabel A. Pérez Garcilópez; Virginia Urruchi del Pozo; José M. Sánchez Pena; Carlos Marcos Lucas
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Paper Abstract

A new electrical equivalent circuit (EEC) has been proposed to model antiferroelectric liquid crystal devices. This circuit includes a constant phase element to take into account the ferroelectric part of the dielectric response in these devices. Electrical characterization of samples has been carried out using a specific experimental protocol based on impedance spectroscopy. The parameters of waveforms used in impedance measurements have been optimized. The procedure to obtain the components of the EEC has also been explained. Finally, the EEC has been validated by comparing experimental and simulated impedance results. A reasonable agreement between both of them has been obtained in a wide frequency range for all selection voltages.

Paper Details

Date Published: 1 August 2011
PDF: 7 pages
Opt. Eng. 50(8) 081206 doi: 10.1117/1.3564817
Published in: Optical Engineering Volume 50, Issue 8
Show Author Affiliations
Juan Carlos Torres Zafra, Univ. Carlos III de Madrid (Spain)
Isabel A. Pérez Garcilópez, Univ. Carlos III de Madrid (Spain)
Virginia Urruchi del Pozo, Univ. Carlos III de Madrid (Spain)
José M. Sánchez Pena, Univ. Carlos III de Madrid (Spain)
Carlos Marcos Lucas, Univ. Carlos III de Madrid (Spain)

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