한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

IPS-Mode Dynamic LCD-TV Realization with Low Black Luminance and High Contrast by Adaptive Dynamic Image Control Technology

  • Oh, E.Y. (R&D Center, LG.Philips LCD) ;
  • Baik, S.H. (R&D Center, LG.Philips LCD) ;
  • Sohn, M.H. (R&D Center, LG.Philips LCD) ;
  • Kim, K.D. (R&D Center, LG.Philips LCD) ;
  • Hong, H.J. (R&D Center, LG.Philips LCD) ;
  • Bang, J.Y. (R&D Center, LG.Philips LCD) ;
  • Kwon, K.J. (R&D Center, LG.Philips LCD) ;
  • Kim, M.H. (R&D Center, LG.Philips LCD) ;
  • Jang, H. (R&D Center, LG.Philips LCD) ;
  • Yoon, J.K. (R&D Center, LG.Philips LCD) ;
  • Chung, I.J. (R&D Center, LG.Philips LCD)
  • Published : 2004.08.23
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Abstract

In this paper, the active backlight control technology with data processing algorithm was developed in order to improve image quality for IPS-mode LCD-TV applications. The image blinking problem caused by repeatedly abrupt change of the backlight luminance was solved by algorithms-Fba(Flexible Boundary algorithm) and Cfa(Cumulative Feedback algorithm)-and the optimized number and space of backlight dimming steps based on perception. In the IPS-mode 42" TFT-LCD panel, the dynamic contrast ratio can be more than twice the typical level by means of lower block luminance and higher white luminance. Additionally, Power consumption and LCD temperature was decreased.

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