한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제25권12호
  • /
  • Pages.996-999
  • /
  • 2012
  • /
  • 1226-7945(pISSN)
  • /
  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지
DOI QR코드

DOI QR Code

UV 광배향법을 통한 광폴리머와 수직 폴리이미드 혼합 배향막의 수직 배향 특성 연구

Study of Homeotropic Liquid Crystal Characteristics Using Photo-polymer and Homeotropic Polyimide Blended Alignment Layer via UV Irradiation Method

  • Lee, Jin-Woo (Technology Policy Department, Korea Electronics Technology Institute)
  • 투고 : 2012.11.02
  • 심사 : 2012.11.24
  • 발행 : 2012.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

From UV irradiation, we achieved homeotropic liquid crystal alignment on blended photo-polymer layer which is composed of polyvinyl-cinnamate (PVCi) and homeotropic polyimide (PI). From vertical alignment (VA) mode, we measured threshold voltages by various PVCi doping concentration. Also, the rise time and fall time of VA cells were measured to verify the best doping concentration. Transmittance curves showed about 70% value between 380 nm and 780 nm wavelength which mean visible region.

키워드

참고문헌

  1. M. Schadt, K. Schmitt, and V. Kozinkov, Jpn. J. Appl. Phys., 31, 2155 (1992). https://doi.org/10.1143/JJAP.31.2155
  2. H. Miyata and K. Kuroda, Chem. Mater., 11, 1609 (1999). https://doi.org/10.1021/cm9900507
  3. J. Chen, D. L. Johnson, P. J. Bos, X. Wang, and J. L. West, Phys. Rev., E54, 1599 (1996).
  4. R. M. Hogan, A. R. Tajbakhsh, and E. M. Terentjev, Phys. Rev., E65, 041720 (2002).
  5. S. Kubo, Z. Gu, K. Takahashi, A. Fujishima, H. Segawa, and O. Sato, Chem. Mater., 17, 2298 (2005). https://doi.org/10.1021/cm050249l
  6. K. Ichimura, Y. Akita, H. Akiyama, Y. Hayashi, and K. Kudo, Jpn. J. Appl. Phys., 35, L992 (1996). https://doi.org/10.1143/JJAP.35.L992
  7. Y. G. Kang, H. G. Park, H. J. Kim, Y. H. Kim, B. Y. Oh, B. Y. Kim, D. H. Kim, and D. S. Seo, Opt. Express, 18, 21594 (2010). https://doi.org/10.1364/OE.18.021594
  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). https://doi.org/10.1364/OL.35.001151
  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). https://doi.org/10.1149/1.3074331
  10. D. Ahn, Y. C. Jeong, S. Lee, and J. K. Park, Opt. Lett., 35, 3141 (2010). https://doi.org/10.1364/OL.35.003141
  11. H. G. Park, J. J. Lee, K. Y. Dong, B. Y. Oh, Y. H. Kim, H. Y. Jeong, B. K. Ju, and D. S. Seo, Soft Matter, 7, 5610 (2011). https://doi.org/10.1039/c1sm05083d