Journal of the Optical Society of Korea

  • 제16권2호
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  • Pages.170-173
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  • 2012
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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Formation of Dual Threshold in a Vertical Alignment Liquid Crystal Device

  • Choi, Sun-Wook (Department of Electronics Engineering, Pusan National University) ;
  • Jin, Huilian (Department of Electronics Engineering, Pusan National University) ;
  • Kim, Ki-Han (Department of Electronics Engineering, Pusan National University) ;
  • Lee, Ji-Hoon (Department of Electronics Engineering, Pusan National University) ;
  • Kim, Hoon (Samsung Display Co. Ltd.) ;
  • Shin, Ki-Chul (Samsung Display Co. Ltd.) ;
  • Kim, Hee Seop (Samsung Display Co. Ltd.) ;
  • Yoon, Tae-Hoon (Department of Electronics Engineering, Pusan National University)
  • 투고 : 2012.05.02
  • 심사 : 2012.05.30
  • 발행 : 2012.06.25
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초록

We present a method that enables dual threshold voltages in a vertical alignment liquid crystal device, through which the gamma shift can be reduced with no subsequent decrease in the contrast ratio. By forming polymer layers, the threshold voltage shift is accomplished through the utilization of the voltage drop effect. We expect that the proposed method can be applied to the conventional 4-domain mode in order to achieve an 8-domain mode without the need for complex driving schemes.

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참고문헌

  1. M. F. Schiekel and K. Fahrenschon, "Deformation of nematic liquid crystals with vertical orientation in electrical fields," Appl. Phys. Lett., 19, 391-393 (1971). https://doi.org/10.1063/1.1653743
  2. C. Z. van Doorn, "Dynamic behavior of twisted nematic liquid crystal layers in switched fields," J. Appl. Phys. 46, 3738-3745 (1975). https://doi.org/10.1063/1.322177
  3. M. Ohe and K. Kondo, "Electro-optical characteristics and switching behavior of the in-plane switching mode," Appl. Phys. Lett. 67, 3895-3897 (1995). https://doi.org/10.1063/1.115309
  4. Y.-H. Kwon, J.-I. Baek, J. C. Kim, and T.-H. Yoon, "A new electrode structure for color-shift reduction in PVA LCD," J. Information Display 8, 17-21 (2007). https://doi.org/10.1080/15980316.2007.9652034
  5. S. S. Kim, "The world's largest TFT-LCD," in Proc. SID Int. Symp. Tech. Dig. (Hynes Convention Center, Boston, Massachusetts, USA, May 2005), vol. 36, pp. 1842-1847. https://doi.org/10.1889/1.2036378
  6. P.-L. Chen, Y.-P. Huang, W.-K. Huang, C.-H. Tsao, J.-J. Su, T.-R. Chang, H.-L. Hou, Y.-C. Lin, K.-Y. Lin, C.-W. Wang, and C.-T. Liu, "Advanced MVA for high quality LCD-TVs," in Proc. SID Int. Symp. Tech. Dig. (Moscone Convention Center, San Francisco, California, USA, June 2006), vol. 37, pp. 1946-1949. https://doi.org/10.1889/1.2433433
  7. R. Lu, S.-T. Wu, and S. H. Lee, "Reducing the color shift of a multi-domain vertical alignment liquid crystal display using dual threshold voltages," Appl. Phys. Lett. 92, 051114 (1-3) (2008). https://doi.org/10.1063/1.2838752
  8. Y.-J. Lee, S. I. Jo, J.-H. Kim, and C.-J. Yu, "Fast eight-domain patterned vertical alignment mode with reactive mesogen for a single-transistor-driving," Jpn. J. Appl. Phys. 49, 030209 (1-3) (2010). https://doi.org/10.1143/JJAP.49.030209
  9. G. S. Lee, J. H. Lee, J. C. Kim, T.-H. Yoon, J.-H. Kim, J.-H. Yu, and H.-Y. Choi, "Nanoparticle doped in-cell retarder for low operating voltage in transflective liquid crystal displays," Jpn. J. Appl. Phys. 48, 042405 (1-4) (2009). https://doi.org/10.1143/JJAP.48.042405

피인용 문헌

  1. Design of an electrode structure for the elimination of the off-axis gamma shift in a multi-domain vertical-alignment liquid crystal cell vol.15, pp.1, 2014, https://doi.org/10.1080/15980316.2013.875954
  2. Micropatterned Vertical Alignment Liquid Crystal Mode With Dual Threshold Voltages for Improved Off-Axis Gamma Distortion vol.65, pp.1, 2018, https://doi.org/10.1109/TED.2017.2769806
  3. Formation of liquid crystal multi-domains with different threshold voltages by varying the surface anchoring energy vol.112, pp.5, 2012, https://doi.org/10.1063/1.4747909
  4. Reduction of gamma distortions in liquid crystal display by anisotropic voltage-dividing layer of reactive mesogens 2016, https://doi.org/10.1080/02678292.2016.1205224
  5. Construction of Polymer-Stabilized Automatic MultiDomain Vertical Molecular Alignment Layers with Pretilt Angles by Photopolymerizing Dendritic Monomers under Electric Fields vol.2, pp.9, 2017, https://doi.org/10.1021/acsomega.7b01015
  6. In-plane switching of vertically aligned negative liquid crystals for high transmittance and wide viewing angle vol.52, pp.21, 2013, https://doi.org/10.1364/AO.52.005256
  7. Vertical Alignment Liquid Crystal Device With Reduced Off-Axis Gamma Shift vol.9, pp.10, 2013, https://doi.org/10.1109/JDT.2013.2277891
  8. P.100: Multi-domain Vertical Alignment of Liquid Crystals Through Control of the Anchoring Energy vol.44, pp.1, 2013, https://doi.org/10.1002/j.2168-0159.2013.tb06492.x
  9. Liquid Crystal Modes for Display Applications vol.24, pp.4, 2013, https://doi.org/10.3807/KJOP.2013.24.4.168