Browse > Article

A Study on the Characteristics of Novel Pseudo-TN IPS Mode LC Cell  

윤형진 (인하대학교 전기공학과)
윤석인 (인하대학교 전기공학)
윤상호 (인하대학교 전기공학)
원태영 (인하대학교 전기공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.41, no.8, 2004 , pp. 59-65 More about this Journal
Abstract
In this paper, we propose Pseudo-TN IPS mde(Pseudo-Twisted Nematic In-Plane Switching mode) based on IT(In-plane switching Twisted nematic) mode that increase contrast ratio from improving optical characteristics and analyze the characteristics of Pseudo-TN IPS uude. Optical transmittance is 25% higher for the PTN-IPS mode than for the IT mode. Because aperture ratio of the PIN-IPS is increased. And the control of Liquid Crystal for adjusting optical transmittance is more easier than IT mode, because optical transmittance variation is linear with applying voltage. Contrast ratio is 8% lower for the PTN-IPS mode than for the IT mode in the horizontal direction. But, Contrast ratio is 20% higher for the PTN-IPS mode than for the IT mode in the vertical direction. It has also cell gap margin and many benefits of IT mode, this may be used very well in the future LC Cell design.
Keywords
IPS(In-Plane Switching); IT(In-Plane switching Twisted nematic); PTN-IPS(Pseudo-Twisted Nematic In-Plane Switching); LCD;
Citations & Related Records
연도 인용수 순위
  • Reference
1 S. H. Lee and M-H. Lee, 'Liquid Crystal Displays with High Image Quality and Fast Response Time,' J. Korean Phys. Soc., Vol. 39, pp. S42-S48, December 2001
2 S. Oka, M. Kimura, and T., 'Electro-optical characteristics of in-plane switching twisted nematic mode,' Akahane, Appl. Phys. Lett., vol. 80, no. 10, pp. 1847-1849, March 2002   DOI   ScienceOn
3 S. Oka, K. Kobayashi and T. Akahane, 'Evaluation of Novel Driving Mode of Liquid Crystal Display,' Asia Display/IDW'01, pp. 245-248, Nagoya, Japan, October 2001
4 S.H. Yoon, J.S. Jung, C.S. Lee, I.T. Yoon, and T.Y. Won, 'Multi-Dimensional Dynamic Simulation of Chiral Nematic LCDs,' IDMC 2002, pp. 343-346, Seoul, Korea, January 2002
5 C.S. Lee, S.H. Yoon, S.I. Yoon, J.H. Lee, H.J. Yoon, M.W. Choi, and T.Y. Won, 'TechWiz LCD: Simulation System for Optimization of AMLCD Panel,' IDMC 2003, pp. 557, Taiwan, February 2003
6 S. Oka, K. Kobayashi, Y. Toko, M. Kimura, and T. Akahane, 'Electro-optical characteristics of in-plane switching twisted nematic mode,' IDW'02, pp. 189-192, Hiroshima, Japan, December 2002
7 TechWiz LCD User's guide
8 Fabrizio Di Pasquale, et al, 'Theoretical and Experimental Study of Nematic Liquid Crystal Display Cells Using the In-Plane Switching Mode,' IEEE Trans. Electron Devices, Vol. 46, no. 4, pp. 661-668, April 1999   DOI   ScienceOn
9 T. Suzuki, S. Nishida, M. Suzuki, and S. Kaneko, 'Analysis and Control of Extraordinary Domains in Wide-Viewing-Angle In-Plane-switching Mode TFT-LCDs,' SID 97 DIGEST, pp. 184-187, Boston, USA, May 1997
10 T. Satake, T. Nishioka, T. Saito, T. Kurata, 'Electro-optical study of an in-plane switching mode using a uniaxial medium model,' ICDL'99, pp. 634-637, Nara, Japan, July 1999
11 S.H. Yoon, S.I. Yoon, C.S. Lee, H.J. Yoon, M.W. Choi, J.W. Kim, and T.Y. Won, 'Numerical Study on the Dynamic Response of Directors for Vertically Aligned Liquid Crystal,' IDW 2003, pp. 45-48, Fukuoka, Japan