Title :
Current trends in polymer dispersed liquid crystals
Author :
Doane, J.W. ; Yang, D.K. ; Chien, L.C.
Author_Institution :
Liquid Crystal Inst., Kent State Univ., OH, USA
Abstract :
A novel cholesteric liquid crystal/polymer gel dispersion has been constructed which can be operated either in normal mode or reverse mode. The normal-mode cell is opaque in a field-OFF condition and clear in a field-ON condition. The reverse-mode cell is clear in a field-OFF condition and opaque in a field-ON condition. In the clear state, both cells are haze-free for all viewing angles. The cholesteric liquid crystal/polymer gel dispersion can be used to make normal-mode and reverse-mode light shutters. The reverse-mode shutter has very good electrooptical characteristics, exhibiting a sharp transition, small hysteresis, and fast dynamic response.<>
Keywords :
cholesteric liquid crystals; disperse systems; liquid crystal displays; liquid crystal polymers; cholesteric liquid crystal/polymer gel dispersion; droplet dispersions; dynamic response; electrooptical characteristics; hysteresis; light shutters; normal mode; opaque; polymer dispersed liquid crystals; reverse mode; Active matrix liquid crystal displays; Birefringence; Crystalline materials; Liquid crystal displays; Liquid crystal polymers; Liquid crystals; Polymer gels; Sealing materials; Seals; Voltage;
Conference_Titel :
Display Research Conference, 1991., Conference Record of the 1991 International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-0213-3
DOI :
10.1109/DISPL.1991.167462
