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$\times$8 backlight zones, the contrast ratio of a high contrast image can reach
$\sim {\hbox{40000:1}}$ 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.
© 2010 IEEE
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