H. Hasebe et al., SUPER TWISTED NEMATIC (STN) LIQUID-CRYSTAL DISPLAYS (LCDS) USING SPIRAL POLYMER ALIGNED NEMATIC (SPAN) LIQUID-CRYSTALS, IEICE transactions on electronics, E79C(8), 1996, pp. 1058-1062
Super twisted nematic (STN) liquid crystal displays (LCDs) using spira
l polymer aligned nematic (SPAN) liquid crystals have been achieved by
photo-polymerization of some kinds of chiral monoacrylates in liquid
crystalline hosts. The spiral polymer made of a chiral monoacrylate in
STN LCD has effect to reduce the driving voltage without any disadvan
tages for the STN LCD. The relation of chemical structure of a chiral
monoacrylate and the nature of spiral polymer is discussed.