Relationship between Concentration of Initiator and Image-Sticking Phenomenon of Polymer-Sustained-Alignment Liquid Crystal Displays

Abstract

We investigated the image-sticking phenomenon of polymer-sustained-alignment liquid crystal displays (PSA-LCDs). According to our experimental results, the image-sticking level of PSA-LCDs depends on the concentration of the photoinitiator in the liquid crystal of PSA-LCDs and the best concentration of the photoinitiator was zero. We found that polymerization of the monomer occurs without the photoinitiator, and clarified the mechanism of polymerization.