모아레, 스타버스트 현상이 없는 터치스크린 패널용 메탈 메쉬 설계

Design of Moir${\acute{e}}$- and Starburst-Free Metal Meshes for Touch Screen Panels

  • 신동균 (한국기술교육대학교 전기.전자.통신공학부) ;
  • 박종운 (한국기술교육대학교 전기.전자.통신공학부) ;
  • 서화일 (한국기술교육대학교 전기.전자.통신공학부)
  • Shin, Dong-Kyun (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education) ;
  • Park, Jong-Woon (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education) ;
  • Seo, Hwa-Il (School of Electrical & Electronic & Communication Engineering, Korea University of Technology and Education)
  • 투고 : 2014.03.03
  • 심사 : 2014.03.20
  • 발행 : 2014.03.31

초록

Using a ray tracing simulation, we have investigated the moir${\acute{e}}$ and starburst phenomena of touch screen panels (TSPs) based on opaque metallic grids (square, hexagonal, and random grids). It is demonstrated that employing a random metal mesh is the most effective way to suppress the moir${\acute{e}}$ and starburst phenomena at the same time. At high crossing angles between metal mesh of TSPs and black matrix (BM) of displays, however, a random metal mesh brings in stronger moir${\acute{e}}$ phenomenon than a square metal mesh due to point defects. Though the square metal mesh suppresses the moir${\acute{e}}$ effect substantially at high crossing angles, yet it results in the strongest starburst patterns. We have also provided the simulation scheme that can capture the moir${\acute{e}}$ and starburst patterns observed experimentally and useful design guidelines for metal grids.

키워드

참고문헌

  1. Amidror, I., "The Theory of the Moire Phenomenon Volume I: Periodic Layers," Springer, 2009.
  2. Goodman, J. W., "Introduction to Fourier Optics," Roberts & Company, 2005.
  3. Saveljev, V., and Kim, S.-K., "Simulation of MoireEffect in 3D Displays," J. Opt. Soc. Kor., Vol. 14, pp. 310-315, 2010. https://doi.org/10.3807/JOSK.2010.14.4.310
  4. Saveljev, V. V., Son, J.-Y., Chun, J.-H., Kwack, K.- D., Cha, K.-H., "About a Moire-Less Condition for Non-Square Grids," J. Display Technol., Vol. 4, pp. 332-339, 2008. https://doi.org/10.1109/JDT.2008.921900
  5. Joo, B.-Y., and Shin, D.-H., "Simulations of pixel moires in the liquid crystal display with image processing technique," Displays, Vol. 30, pp. 190-194 2009. https://doi.org/10.1016/j.displa.2009.08.003
  6. http://www.opticalres.com
  7. Gabrielyan, E., "The basics of line moire patterns and optical speedup," arXiv:Physics/0703098, 2007.
  8. Amidror, I., "The Theory of the Moire Phenomenon," Kluwer Academic Publisher, 2000.