40.2: Novel Phototunable Chiral Materials for Single Layer Color Cholesteric Display

Abstract

Non -symmetric phototunable chiral compounds (1a, 1b) were designed and synthesized, which exhibited high helical twisting power (about 60um -1 ). The materials tuned the colors for the entirely visible light region from 450nm to 670nm with high color stability and good NTSC. Single layer full color cholesteric display can be generated by the chiral compounds.

A full-color reflective display using polymer-stabilized blue phase liquid crystal

“…Here, the sub-pixels are separated by striped wall structures. 20 Another way to obtain full color is to stack red, green, and blue (RGB) layers, similar to a cholesteric display. 21 As voltage increases, the LC molecules tend to align with the electric field because the employed LC has a positive dielectric anisotropy.…”