DOI QR코드

DOI QR Code

Alignment Effects for Nematic Liquid Crystal on a New Diamond-like Carbon Layer

  • Seo, Dae-Shik (Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University) ;
  • Jo, Yong-Min (Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University) ;
  • Hwang, Jeoung-Yeon (Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University) ;
  • Lee, Sang-Keuk (Department of Electrical Engineering, College of Engineering, Kwangwoon University)
  • 발행 : 2002.06.01

초록

Alignment effects for nematic liquid crystal (NLC) and electro-optical (EO) characteristics of the ion beam (IB) aligned twisted nematic (TN)-liquid crystal display (LCD) with oblique ion beam exposure on the diamond-like carbon (DLC) thin film surface were studied. A high pretilt angle of 3.5$^{\circ}$ in NLC by ion beam exposure on the DLC thin film layer can be measured. An excellent voltage-transmittance (V-T) curve of the ion beam aligned TN-LCD was observed with oblique ion beam exposure on the DLC thin film surface for 1 min. Also, a faster response time for the ion beam aligned TN-LCD with oblique ion beam exposure on the DLC thin film surface for 1 min can be achieved.

키워드

참고문헌

  1. H. Matsuda, D.-S. Seo, N. Yoshida, K. Fujibayashi ,and S. Kobayashi, 'Estimation of the static electricity and optical retardation produced by the rubbing polyimide and polyamide films with different fabrics', Mol. Cryst. Liq. Cryst., Vol. 264, p. 23, 1995 https://doi.org/10.1080/10587259508037298
  2. M. Schadt, K. Schmitt, V. Jozinkov, and V. Chigrinov, 'Surface-induced parallel alignment of liquid crystals by linearly polymerized photopolymers', Jpn. J. Appl. Phys., Vol. 31, No. 7, P. 2155,1992 https://doi.org/10.1143/JJAP.31.2155
  3. J. -Y. Hwang, D. -S. Seo, and J. -H. Kim, 'Liquid crystal alignment effects for the photoaligned VA-LCD on the photo-polymer', J. of KIEEME(in Korean), Vol. 1, No. 3, P. 10, 2000
  4. J. -Y. Hwang and D. -S. Seo, 'Electro-optical characteristics of the TN cell photo-aligned on the blending photopolymer surfaces', J. of KIEEME(in Korean), Vol. 14, No. 7, P. 600, 2001
  5. J. -Y. Hwang, D. -S. Seo, J. -Y. Kim, J. -H. Lee, and T. -H. Kim 'Effects of liquid crystal alignment on the photopolymer based poly[N-(Phenyl)] maleimide', J. of KIEEME(in Korean), Vol. 14,No. 10, p.845,2001
  6. X. Wang and J. L. West, 'The mechanism of pretilt generation on polarized ultraviolet light aligned polyimide film', SID'97 digest paper, P. 5, 1997
  7. P. Chaudharl, J. Lacey, J. Doyle, E. Galligan, S. C. Alan, A. Callegarl, G. Hougham, N. D. Lang, P. S. Andry, R. John, K. H. Yang, M. Lu, C. Cal, J. Speidell, S. Purushothaman, J. Ritsko, M. Samnt, J. Stohrt, Y. Nakagawa, Y. Katoh, Y. Saitoh, K-. Saka, H. Satoh, S. Odahara, H. Nakano, J. Nskshski, and Y. Shiota, 'Atomic-beam alignment of inorganic materials for liquid-crystal displays', Nature, Vol. 411, No. 5, P. 56, 2001 https://doi.org/10.1038/35075021