Delta-color adjustment (DCA) for spatial modulated color backlight algorithm on high dynamic range LCD TVs

Guo Zhen Wang*, Fang Cheng Lin, Yi-Pai Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A high-dynamic-range liquid crystal display (HDR-LCD) which studies as a dual-panel display can much enhance the contrast ratio of image and reduce the power consumption upon the locally controlled dynamic backlight. A simple modulated algorithm, Delta-Color Adjustment (DCA) method, was proposed to determine the RGB-LEDs backlight modulation for high image quality. By implementing the DCA method on a 37 HDR-LCD TV with 8 ×8 backlight zones, the contrast ratio of a high contrast image can reach ∼ 40000:1 with clear image detail and 40% power reduction. Furthermore, by controlling the R, G, and B LEDs individually , the color gamut can be enlarged to 125% NTSC.

Original languageEnglish
Article number5447575
Pages (from-to)215-220
Number of pages6
JournalIEEE/OSA Journal of Display Technology
Volume6
Issue number6
DOIs
StatePublished - 30 Apr 2010

Keywords

  • Color backlight
  • Contrast ratio (CR)
  • Dual-panel
  • High dynamic range (HDR)
  • Power consumption

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