LCDs based on a luminescent dichroic-dye-doped non-absorbing cholesteric LC with positive dielectric anisotropy is proposed. In the initial state, the orientation of the dye molecules provides effective light absorption and irradiation. By applying an electric field to the cell, the absorption and thus the luminescence is absent. A two-color luminescence could be achieved by sandwiching two cells: the upper cell consists of a cholesteric LC with two dyes (sensitizer and emitter) and is used with an applied voltage (active cell); the lower cell consists of a cholesteric LC doped with one dye and works without applying a voltage (passive cell). The performance characteristics of luminescent dye-doped cholesteric-LCDs were investigated.

Luminescent dichroic dye-doped cholesteric liquid-crystals displays

BARBERI, Riccardo Cristoforo;R. BARTOLINO;DE SANTO, Maria Penelope
2004

Abstract

LCDs based on a luminescent dichroic-dye-doped non-absorbing cholesteric LC with positive dielectric anisotropy is proposed. In the initial state, the orientation of the dye molecules provides effective light absorption and irradiation. By applying an electric field to the cell, the absorption and thus the luminescence is absent. A two-color luminescence could be achieved by sandwiching two cells: the upper cell consists of a cholesteric LC with two dyes (sensitizer and emitter) and is used with an applied voltage (active cell); the lower cell consists of a cholesteric LC doped with one dye and works without applying a voltage (passive cell). The performance characteristics of luminescent dye-doped cholesteric-LCDs were investigated.
Cholesteric liquid crystals display; Bistable LCD; Dichroic dye; Electro-optic effect
File in questo prodotto:
File Dimensione Formato  
Journal of the SID 2004.pdf

non disponibili

Licenza: Non specificato
Dimensione 137.96 kB
Formato Adobe PDF
137.96 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/153149
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? ND
social impact