Polymer stabilized cholesteric texture

Nematic gels are very interesting systems, thus deserving further study. Actually, these systems are being studied experimentally for applications. Examples are polymer dispersed liquid crystal displays are sometimes dispersed not in a polymer, but in a polymer network. Displays by means of the polymer stabilized cholesteric texture change, are also achieved in crosslinked systems. In addition, the chiral smectic phase has been obtained in such systems as well. Other types of liquid crystal gels have been applied or are expected to be applied in such devices. 

Polymer-dispersed LC (PDLC) [30], polymer-stabilized cholesteric texture (PSCT) [31], and LC gels [32] all exhibit optical scattering characteristics and have wide applications in displays and optical devices. The LC gel-based reflective LCD can also be extended to transflective... 

J. W. Doane, D.-K. Yang, and Z. Yaniv, Front-lit flat panel display from polymer stabilized cholesteric textures, Proc. Japan Display 92, 73 (1992). 

Figure 11.2 (a) Photo of the light shutter from polymer stabilized cholesteric texture (PSCT) normal... 

Figure 11.30 Schematic diagram showing how the polymer-stabilized cholesteric texture normal-mode hght shutter works.

D.-K. Yang, L.-C. Chien, and Y. K. Fung, Polymer stabilized cholesteric textures materials and applications, in Liquid crystals in complex geometries, ed. G.P. Crawford and S. Zumer (Taylor Francis, London, 103-143,1996). 

R.Q. Ma and D.-K. Yang, Polymer stabilized cholesteric texture reverse-mode tight shutter Cell design, J. SID, 6, 125 (1998). 

Y. H. Lin, H. Ren, Y. H. Fan, et al.. Polarization-independent and fast-response phase modulation using a normal-mode polymer-stabilized cholesteric texture, J. Appl. Phys. 98, 043112 (2005). 

Sun, Y, "Polymer Stabilized Cholesteric Textures-A reverse Mode Light Valve," Thesis, Kent State University, December, 1994. 

Figure 12.34. Schematic illustration of a polymer-stabilized cholesteric texture (PSCT) in (a) the planar texture, (b) the focal conic texture, and (c) the homeotropic texture. Transforming the homeotropic ahgned state (c) back to the planar of focal conic state depends on the history of the voltage.

Chien and coworkers [68] devised a material scheme to manufacture red, green, and blue pixels of polymer-stabilized cholesteric textures by selectively adjusting the chiral pitch length spatially across the display substrate using... 

I. Dierking, L.L. Kosbar, A.C. Lowe, and G.A. Held, Polymer network structure and electro-optic performance of polymer stabilized cholesteric textures I. The influence of curing temperature, Liq. Cryst. 24, 387 395 (1998). 

Ren, H., Wu, S.T. Reflective reversed-mode polymer stabilized cholesteric texture light switches. J. Appl. Phys. 92, 797-800 (2002)... 

Huang, C.-Y., Chih, Y., Ke, S. Effect of chiral dopant and monomer concentrations on the electro-optical response of a polymer stabilized cholesteric texture cell. Appl. Phys. B 86, 123-127 (2007)... 

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