Passive matrix SSFLC display with analogue grey levels using PTFE alignment films

Campoli, F. and Beccherelli, Romeo and d'Alessandro, Antonio and Ferrara, Vincenzo and Maltese, Paolo (1999) Passive matrix SSFLC display with analogue grey levels using PTFE alignment films. Display, 20 (4). pp. 191-197. ISSN 0141-9382

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Abstract

Fabrication and performance of a surface stabilised ferroelectric liquid crystal display are reported. Grey shades are obtained by modulating the width of switched FLC microdomains by means of an electric field gradient distributed over the pixel, between adjacent metal columns. Such a gradient, depending on the data voltages, is achieved through a high resistance film deposited on the column glass plate. The choice of PTFE (Poly-tetra-fluoro-ethylene) alignment layers, easily deposited by friction, provides very low hysteresis and sticking effect. Morphology of alignment layers, carried out by AFM, is briefly described and evaluated. Addressing mode voltage waveforms to obtain grey shades are also reported.

Item Type:	Article
Uncontrolled Keywords:	Ferroelectric liquid crystals; Alignment layers; Gradations; PTFE; Image sticking
Subjects:	600 Tecnologia - Scienze applicate > 620 Ingegneria e attivita' affini > 621 Fisica applicata; Ingegneria meccanica > 621.3 Ingegneria elettrotecnica; Illuminazione; Superconduttivita'; Ingegneria magnetica; Ottica applicata; Tecnologia parafotica; Elettronica; Ingegneria delle comunicazioni; Elaboratori
Depositing User:	Chiara D'Arpa
Date Deposited:	08 Mar 2013 15:54
Last Modified:	08 Mar 2013 15:54
URI:	http://eprints.bice.rm.cnr.it/id/eprint/4533

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