Browse > Article
http://dx.doi.org/10.4313/JKEM.2013.26.9.677

Si Induced Polymer Based Alignment Layer for Liquid Crystal Orientations with High Electro-Optic Properties at Low Temperature  

Kim, Dai-Hyun (Yonsei Institute of Green Technology)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.26, no.9, 2013 , pp. 677-681 More about this Journal
Abstract
Apart from the deposition of alignment layer, alignment process needs to be involved for alignment of liquid crystal (LC) molecules. To simplify manufacturing process, several method were used such as rubbing, ion-beam irradiation, UV irradiation, and lithography. But, eventually it needs another treatment for LC alignment. Here, we suggested Si induced polyimide (PI) alignment layer at low temperature. Using this method, we are able to eliminate the alignment process and found that the alignment and electro-optic performance are much better than that of the rubbed PI LC cells. Compared to the rubbed PI cells, the response time was decreased by 70% and C-V characteristics have hysteresis-free.
Keywords
Liquid crystal (LC) alignment; Si induced polyimide (PI); Electro-optic performance;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. M. Geary, J. W. Goodby, A. R. Kmetz, and J. S. Patel, J. Appl. Phys., 62, 4100 (1985).
2 D. S. Seo, S. Kobayashi, and M. Nishikawa, Appl. Phys. Lett., 61, 2392 (1992).   DOI
3 W. K. Lee, Y. S. Choi, Y. G. Kang, J. Sung, D. S. Seo, and C. Park, Adv. Funct. Mater., 21, 3843 (2011).   DOI   ScienceOn
4 M. Schadt, K. Schmitt, and V. Kozinkov, Jpn. J. Appl. Phys., 31, 2155 (1992).   DOI
5 J. Y. Hwang, D. S. Seo, J. Y. Kim, and T. H. Kim, Jpn. J. Appl. Phys., 42, 194 (2003).   DOI
6 J. Janning, Appl. Phys. Lett., 21, 173 (1972).   DOI
7 Y. G. Kang, H. J. Kim, H. G. Park, B. Y. Kim, and D. S. Seo, J. Mater. Chem., 18, 21594 (2010).
8 H, J. Na, J. W. Lee, W. K. Lee, J. H. Lim, H. G. Park, B. Y. Kim, J. Y. Hwang, J. M. Han, and D. S. Seo, Opt. Lett., 35, 1151 (2010).   DOI   ScienceOn
9 H. G. Park, B. Y. Oh, Y. H. Kim, B. Y. Kim, J. M. Han, J. Y. Hwang, and D. S. Seo, Electrochem. Solid. St., 12, J37 (2009).   DOI   ScienceOn
10 P. Chaudhari, J. Lacey, J. Doyle, E. Galligan, S. C. A. Lien, A. Callegary, G. Hougham, N. D. Lang, P. S. Andry, R. John, K. H. Yang, M. Lu, C. Cai, J. Speidell, S. Purushothaman, J. Ritsko, M. Samant, J. Stohr, Y. Nakagawa, Y. Katoh, Y. Saitoh, K. Sakai, H. Satoh, S. Odahara, H. Nakano, J. Nakagaki, and Y. Shiota, Nature London, 411, 56 (2001).   DOI   ScienceOn
11 J. Stohr, M. G. Samant, J. Luning, A. C. Callegari, P. Chaudhari, J. P. Doyle, J. A. Lacey, S. A. Lien, S. Purushothaman, and J. L. Speidell, Science, 292, 2299 (2001).   DOI   ScienceOn
12 D. S. Seo, K. Araya, N. Yoshida, M. Nishikawa, Y. Yabe, and S. Kobayashi, Jpn. J. Appl. Phys., 34, L503 (1995).   DOI   ScienceOn