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

  • 제21권5호
  • /
  • Pages.474-480
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  • 2008
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  • 1226-7945(pISSN)
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  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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Full Color Reflective Cholesteric Liquid Crystal using Photosensitive Chiral Dopant

  • 박서규 (충남대학교 바이오응용화학부 고분자공학과) ;
  • 김정수 (충남대학교 바이오응용화학부 고분자공학과) ;
  • 조희석 ((주)엔디스 차세대디스플레이연구소) ;
  • 권순범 ((주)엔디스 차세대디스플레이연구소) ;
  • 유리레즈니코프 (우크라이나 물리연구소)
  • 발행 : 2008.05.01
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초록

In order to make full color cholesteric displays, color filter-less R, G, B sub-pixel structured cholesteric LC cells have been studied. To make R, G, B colors, UV induced pitch variant chiral dopant was added to cholesteric LC mixtures. The concentration of the photo-sensitive chiral dopant was adjusted so that the initial state showed blue color and the color was changed from blue to green and red with increase of UV irradiation to the cholesteric cells. To prevent the mixing of R, G, B reflective sub-pixel liquid crystals, separation walls were formed using negative photo resister in boundary area between sub-pixels, Through the optimization of the material concentrations and UV irradiation condition, vivid R, G, B colors were achieved.

키워드

참고문헌

  1. G. P. Crawford, 'Flexible Flat Panel Displays', Jon Wiley & Sons, Ltd., p. 331, 2005
  2. S.-T. Wu and D.-K. Yang, 'Reflective Liquid Crystal Displays', John Wiley & Sons, Ltd., p. 197, 2004
  3. D. K. Yang, J. L. West, L.-C. Chien, and J. W. Doane, 'Control of reflectivity and bistability in displays using cholesteric liquid crystals', J. Appl. Phys., Vol. 76, p. 1331, 1994 https://doi.org/10.1063/1.358518
  4. G. A. Dir, J. J. Wysock, J. E. Adams, J. H. becker, W. E. Haas, B. Mechlowitz, L. B. Leader, E. D. Saeva, and J. L. Daily, 'Cholesteric liquid crystal texture change displays', Proc. of SID, Vol. 3, No. 2, p. 106, 1972
  5. Hashimoto, K., Okada, M., Nishiguchi, K., Masaaumi, N., Yamakawa, E., and Taniguchi, T., 'Reflective color display sing cholesteric liquid crystals', SID Digest, p. 897, 1998
  6. Huang, X. Y., Khan, A., Davis, D., Jones, C., Miller, N., and Doane, J. W., 'Full color reflective cholestric liquid crystal display', Proceeding of Asia Ddisplay, p. 883, 1998
  7. Khan, A., Huang, X.-Y., Miller, N., Jones, C., and Doane, J. W., 'Color stacked reflective cholesteric displays', Processdings of the 20th International Display Research Conference, p. 245, 2000
  8. Okada, M., Hatano, T., and Hashimoto, K., 'Reflective multicolor display using cholesteric liquid crystals', SID Digest, p. 1019, 1997
  9. H.-S. Yoon, H.-S. Cho, Y.-J. Kim, S.-B. Kwon, and Y. Reznikov, 'Vivid Full Color Reflective Cholesteric LCDs with Bistable Switching', ILCC., p. 735, 2006
  10. S.-B. Kwon, 'Full Color LCD and Manufacturing there of', PCT/KR2006/ 002134, 2006
  11. D.-K. Yang and X.-D. Mi, 'Modeling of the reflection of cholesteric liquid crystals using the jones matrix', J. Phys. D: Appl. Phys., Vol. 33, p. 672, 2000 https://doi.org/10.1088/0022-3727/33/6/313
  12. L.-C. Chien, U. Muller, M.-F. Nabor, and J. W. Doane, 'Mulitcolor reflective cholesteric displays', SID Intl. Symp. Digest Tech. Papers, Vol., 26, p. 169, 1995
  13. F. Vicentini, J. Cho, and L. C. Chien, 'Tunable chiral materials for multicolour reflective cholesteric displays', Liq. Cryst., Vol. 24, No. 4, p. 483, 1998 https://doi.org/10.1080/026782998206939
  14. L.-C. Chien, F. Vicentini, Y. Lin, and U. Muller, 'Color pixelization of cholesteric materials', Proc. 3rd Color Imaging Conference, p. 58, 1995
  15. D.-K. Yang and J. W. Doane, 'Cholesteric liquid crystal/polymer gel dispersion; reflective displays', SID Intl. Symp. Digest Tech. Papers, Vol. 23, p. 759, 1992