Influence of charge transfer complex doping of polyamide alignment film on SSFLC cell performance

Galloppa, A. and Cataldo, Franco and Campoli, Federico and Beccherelli, Romeo and d'Alessandro, Antonio and Ferrara, Vincenzo and Maltese, Paolo (1996) Influence of charge transfer complex doping of polyamide alignment film on SSFLC cell performance. Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals , 209. pp. 129-137. ISSN 1058-725X

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Abstract

New alignment films for surface stabilized ferroelectric liquid crystals displays (SSFLCD's) have been produced by doping standard polyamide alignment films with an organic conducting charge transfer complex. The doping process exploits absorption equilibrium between a solution of the dopant and the polymeric solid phase. Dopant concentration in the solid state has been evaluated by spectrophotometric analysis in the UV-visible range. Test displays with ITO electrodes and doped alignment layers have been fabricated and their performance evaluated with new techniques. It has been found that optical response is a function of dopant concentration in the alignment layer and that display performances can improve at an optimum concentration. In fact addressing hysteresis is reduced at low dopant concentration, but increases at higher concentrations

Item Type: Article
Uncontrolled Keywords: Absorption; Charge transfer; Conductive materials; Doping (additives); Electrodes; Electron device testing; Hysteresis; Liquid crystal displays; Performance; Polyamides; Solutions; Spectrophotometry
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: 11 Jan 2013 11:54
Last Modified: 11 Jan 2013 11:54
URI: http://eprints.bice.rm.cnr.it/id/eprint/4486

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