Polytetrafluoroethylene (PTFE or Teflon) layers have been developed as orientation films in order to produce ferroelectric liquid crystals displays with improved addressing behaviour. PTFE layers have been friction deposited on glass substrate with ITO electrodes at various temperatures in the range 130°C-200°C. The PTFE layers have been used to asemble displays whiich were adressed and showed no hysteresis, reduced image sticking and reduced switching time with respect to standard test cells employing rubbed polymers as allignment layers. In order to assure the best electrro-optical performance. PTFE films have been characterized from the point of view of uniformity and thickness as function of deposition parameters.
Use of PTFE Alignment Layers in Passive Addressed SSFLC Displays / Campoli, F.; Beccherelli, R.; D'Alessandro, Antonio; Ferrara, Vincenzo; Galloppa, A.; Padeletti, G.; Petrocco, S.; Maltese, Paolo. - In: MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY. SECTION A, MOLECULAR CRYSTALS AND LIQUID CRYSTALS. - ISSN 1058-725X. - 304:1(1997), pp. 357-362. [10.1080/10587259708046982]
Use of PTFE Alignment Layers in Passive Addressed SSFLC Displays
D'ALESSANDRO, Antonio;FERRARA, Vincenzo;MALTESE, Paolo
1997
Abstract
Polytetrafluoroethylene (PTFE or Teflon) layers have been developed as orientation films in order to produce ferroelectric liquid crystals displays with improved addressing behaviour. PTFE layers have been friction deposited on glass substrate with ITO electrodes at various temperatures in the range 130°C-200°C. The PTFE layers have been used to asemble displays whiich were adressed and showed no hysteresis, reduced image sticking and reduced switching time with respect to standard test cells employing rubbed polymers as allignment layers. In order to assure the best electrro-optical performance. PTFE films have been characterized from the point of view of uniformity and thickness as function of deposition parameters.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
