The relationships between LC cell thickness and chiral pitch for stabilization of Long Pitch Super Twisted Nematic

Abstract

We succeeded in the stabilization of Long Pitch Super Twisted Nematic (LPSTN), which has a relationship d/p (d: cell thickness, p: chiral pitch) > 2.7 by using polymer stabilization with an applied voltage near the clearing temperature. LPSTN structure is a regular STN without an applied voltage while it changes to reversed twisted nematic (RTN) over Fredericks voltage. We are going to introduce a stabilization condition of LPSTN and RTN structures with experimental and simulation data for various d/p values.