Microscopic texture and grey scale generation in anti-ferroelectric liquidcrystals

Citation
R. Beccherelli et Sj. Elston, Microscopic texture and grey scale generation in anti-ferroelectric liquidcrystals, J PHYS D, 32(17), 1999, pp. 2241-2245
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN journal
00223727 → ACNP
Volume
32
Issue
17
Year of publication
1999
Pages
2241 - 2245
Database
ISI
SICI code
0022-3727(19990907)32:17<2241:MTAGSG>2.0.ZU;2-O
Abstract
Polarized stroboscopic microscopy shows that in anti-ferroelectric liquid c rystal devices a uniform increase in light transmission takes place during the application of a short voltage pulse of sufficient amplitude. When this pulse is followed by a lower voltage, the transmission fades in two steps: in the first a fast uniform decay is observed and is accompanied by stripe s that rapidly appear out of the background; then a slower striped domain g rowth process takes place. On the other hand, when a device is allowed to r elax from the ferroelectric state, only a domain growth process is observed . We discuss the physical mechanisms involved and the effects of writing an d holding voltages on grey levels and their implications for display applic ations.