Delta-Color Adjustment (DCA) for Spatial Modulated Color Backlight Algorithm on High Dynamic Range LCD TVs

作者：Wang Guo Zhen^*; Lin Fang Cheng; Huang Yi Pai

来源：Journal of Display Technology, 2010, 6(6): 215-220.

DOI：10.1109/JDT.2009.2037164

• Color backlight
• contrast ratio (CR)
• dual-panel
• high dynamic range (HDR)
• power consumption

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 x 8 backlight zones, the contrast ratio of a high contrast image can reach similar to 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.

• 出版日期2010-6