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16.1: Recent Improvements of Bistable Nematic Displays Switched By Anchoring Breaking (BiNem®)
Author(s) -
Dozov Ivan,
MartinotLagarde Philippe,
LamarqueForget Sandrine,
Stoenescu Daniel,
Angelé Jacques,
Vercelletto Romain,
Pécout Bertrand,
Boissier Alain
Publication year - 2001
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1831836
Subject(s) - anchoring , bistability , liquid crystal , multivibrator , contrast ratio , materials science , liquid crystal display , optics , optoelectronics , physics , voltage , engineering , structural engineering , quantum mechanics
We present recent major improvements of 180° bistable twisted nematics displays (BiNem®), a new nematic bistable display technology characterized by the breaking of monostable anchoring. This technology allows the switching between 0° and 180°‐twisted stable textures. We show that optimization of the liquid crystal material, suitable rubbed polymer anchoring layers, and the use of a simple multiplexing scheme allow, for the first time, to demonstrate a high contrast with a medium resolution black and white passive matrix. Excellent contrast ratio, wide view angle, pure black and white optical states, good response times and low electrical consumption are achieved.