Multimode Configuration Doped with a Chiral Agent for Transflective Liquid Crystal Display with a Single Cell Gap

  • Yu, Chang-Jae (School of Electrical Engineering #32, Seoul National University) ;
  • Kim, Jin-Yool (School of Electrical Engineering #32, Seoul National University) ;
  • Kim, Dong-Woo (School of Electrical Engineering #32, Seoul National University) ;
  • Lee, Sin-Doo (School of Electrical Engineering #32, Seoul National University)
  • Published : 2004.09.30

Abstract

We demonstrate a transflective liquid crystal display (LCD), doped with a chiral agent to produce a low helical twisting power, in a multimode configuration consisting of the homogeneous alignment and the hybrid alignment. The multimode transflective LCD with a single cell gap was fabricated using a single-step photoalignment technique with a self-masking process of an array of metal reflectors in the reflective region. In our configuration, the electro-optical disparity between the transmissive region and the reflective region was found to be significantly reduced by the low helical twisting power of the chiral dopant.

Keywords

References

  1. H.-I. Baek, Y.-B. Kim, K-S. Ha, D.-G. Kim, and S.-B. Kwon, in IDW'00(2000), p. 41
  2. M. Jisaki and H. Yamaguchi, in IDW'OI (2001), p. 133
  3. T. B. Jung, J. C. Kim, and S. H. Lee, Jpn. i. Appl. Phys. 42, L464 (2003) https://doi.org/10.1143/JJAP.42.L464
  4. S. H. Lee, H. W. Do, G.-D. Lee, T.-H. Yoon, and J. C. Kim, Jpn. r. Appl. Phys. 42, L1455 (2003) https://doi.org/10.1143/JJAP.42.L1455
  5. J. H. Song and S. H. Lee, Jpn. J. Appl. Phys. 43, L1130 (2004) https://doi.org/10.1143/JJAP.43.L1130
  6. S. H. Lee, K.-H. Park, J. S. Gwag, T.-H. Yoon, and J. C. Kim, Jpn. J. Appl. Phys. 42, 5127 (2003) https://doi.org/10.1143/JJAP.42.5127
  7. C.-J. Yu, J. Kim, D.-W. Kim, and S.-D. Lee, in SID'04 Digest (2004), p. 642
  8. Y. Y. Fan, H. C. Chiang, T. Y. Ho, Y. M. Chen, Y. C. Hung, I. J. Lin, C. R. Sheu, C. W. Wu, D. J. Chen, J. Y. Wang, B. C. Chang, Y. J. Wong, and K H. Liu, in SID'04 Digest (2004), p. 647
  9. J.-H. Park, C.-J. Yu, J. Kim, S.-Y. Chung, and S.-D. Lee, Appl. Phys. Lett. 83, 1918 (2003) https://doi.org/10.1063/1.1609042
  10. C.J. Yu, J. Kim, D.-W. Kim, and S.-D. Lee, in IMID'04 (2004), p. 834
  11. P. G. de Gennes and J. Prost, The Physics of Liquid Crystals, 3rd ed. (Oxford University Press, New York, 1993)
  12. G. H. Heilmeier, J. A. Castellano, and L. A. Zanoni, Mol. Cryst. Liq. Cryst. 8, 293 (1969) https://doi.org/10.1080/15421406908084910
  13. S. Matsumoto, M. Kawamoto, and K Mizunoya, J. Appl. Phys. 47, 3842 (1976) https://doi.org/10.1063/1.323245
  14. Y. J. Kim and S.-D. Lee, Appl. Phys. Lett. 72, 1978 (1998) https://doi.org/10.1063/1.121239
  15. Data provided by E. Merck
  16. W. H. Press, B. P. Flannery, S. A. Teukolsky, and W. T. Vetterling, Numerical Recipes : The Art of Scientific Computing, (Cambridge University Press, New York, 1986)
  17. C.J. Yu, Y. J. Jeon, S. Hong, and S.-D. Lee, Jpn. J. Appl. Phys. 43, 5435 (2004) https://doi.org/10.1143/JJAP.43.5435