Liquid crystal display (LCD) devices still have a lot of demand because of their simple structure, light weight and low power consumption. Various researches are continuously carried out to realize better performance. Recently, the combination of nanomaterials and nanotechnology into LCDs has attracted great attention in the scientific community due to their unique electro-optic properties [1-5]. Especially, many research groups have found the liquid crystal (LC)-nanoparticles mixtures show novel electro-optical (EO) properties such as memory effect [1,2], frequency modulation properties [3], low threshold voltage [4], and fast response time [5]. In this study, we demonstrated high performance EO properties of LC system via dispersive lanthanide oxide nanoparticles. Lanthanide oxides such as Dy2O3, Ho2O3, Gd2O3, Pr2O3 and La2O3 are widely used due to high dielectric constant, large band gaps and high thermal stability. Uniform LC alignments and regular pretilt angles were achieved as a function of nanoparticle concentrations. Also, this approach employed the conventional PI materials, the fabricate process, therefore, it could be adopted by the conventional LCD fabrication.
References
[1] A. Glushchenko, H. Kresse, V. Reshetnyak, Y. U. Reznikov, and O. Yaroshchuk, Liq. Cryst. 23, 241 (1997).
[2] D. Sikharulidze, Appl. Phys. Lett. 86, 033507 (2005).
[3] Y. Shiraishi, N. Toshima, K. Maeda, H. Yoshikawa, J. Xu, and S. Kobayashi, Appl. Phys. Lett. 81, 2845 (2002).
[4] W.-K. Lee, J.-H. Choi, H.-J. Na, J.-H. Lim, J.-M. Han, J.-Y. Hwang, and D.-S. Seo, Opt. Lett. 34, 3653 (2009).
[5] W. Lee, C.-Y. Wang, and Y.-C. Shih, Appl. Phys. Lett. 85, 513 (2004).
Nanoelectronic systems, components & devices , Optical properties of nanostructures
