Polymer Cholesteric Liquid Crystal Flakes for Particle Displays
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY
(B204)Polymer cholesteric liquid crystal (PCLC) flakes suspended in a moderately conductive host fluid reorient in the presence of an AC electric field within a specific frequency range, causing a dramatic change in flake reflectivity. PCLC flakes reflect light of a specific color and (circular) polarization, thereby eliminating the need for backlighting, color filters, and polarizers to attain unique optical effects. Reorientation can be seen in fields as low as several mili-volts per micron, and reorientation times are on the order of several hundred milliseconds, thereby approaching response times for both nematic liquid crystal displays and other particle displays. Applications for electro-optic devices, decorative commercial and consumer products, and displays, particularly electronic paper, are envisioned.
- Research Organization:
- Laboratory for Laser Energetics (US)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- FC03-92SF19460
- OSTI ID:
- 812816
- Report Number(s):
- DOE/SF-19460-494; 1371; 2002-145
- Country of Publication:
- United States
- Language:
- English
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