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L‐7: Late‐News Paper : Solution of the Dark State Problem for High Contrast AFLCDs
Author(s) -
D'havé K.,
Rudquist P.,
Lagerwall S. T.,
Pauwels H.,
Dabrowski R.
Publication year - 2000
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 - 10.1889/1.1832898
Subject(s) - polarizer , dark state , antiferroelectricity , tilt (camera) , contrast (vision) , optics , high contrast , leakage (economics) , liquid crystal , materials science , optoelectronics , physics , engineering , mechanical engineering , economics , birefringence , dielectric , ferroelectricity , macroeconomics
Despite more than ten years of R&D in antiferroelectric liquid crystal displays (AFLCDs), this very promising technology has not yet reached the market. The main reason for this is the bad dark state due to light leakage from imperfections of the LC alignment and from the pretransitional effect. We have found that both problems are eliminated by using AFLC materials with substantially 45° tilt angle in the surface stabilized AFLC geometry. The performance of conventional AFLCDs will be considerably enhanced with this kind of material, and furthermore, 45° AFLCs have a unique potential for both reflective mode and polarizer free displays.