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

doi:10.1109/JDT.2009.2037164

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

Department of Photonics

Research output: Contribution to journal › Article › peer-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 language	English
Article number	5447575
Pages (from-to)	215-220
Number of pages	6
Journal	IEEE/OSA Journal of Display Technology
Volume	6
Issue number	6
DOIs	https://doi.org/10.1109/JDT.2009.2037164
State	Published - 30 Apr 2010

Keywords

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

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10.1109/JDT.2009.2037164

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

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.",

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