Research on color matching of LED backlight for large-color-gamut LCD application

Meng Liang; Manning Fan; Debo Guo; Guangyi Liu; Guohong Wang; Fuhua Yang; Liangchen Wang; Yiping Zeng; Jinmin Li

doi:10.1117/12.760014

4 January 2008 Research on color matching of LED backlight for large-color-gamut LCD application

Meng Liang, Manning Fan, Debo Guo, Guangyi Liu, Guohong Wang, Fuhua Yang, Liangchen Wang, Yiping Zeng, Jinmin Li

Author Affiliations +

Proceedings Volume 6841, Solid State Lighting and Solar Energy Technologies; 68410Y (2008) https://doi.org/10.1117/12.760014
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Comparing with the conventional CCFL (Cold Cathode Fluorescent Lamp) backlight, three-basic-color LEDs backlight has some advantages such as good color reproduction, long life and lead free etc. Theoretically, the color gamut is determined by x, y coordinates of the three basic colors in CIE chromaticity diagram, and the x, y coordinates of each basic color can derived from the relative spectrum distribution (RSD) of the LED. In this paper, the red, green and blue LEDs' RSD models are established to calculate and analyze the color gamut of a backlight. By simulating those models, the relationships that the color gamut of a LED backlight varies with each color are analyzed, and the optimum combination of three colors is obtained within the given wavelengths ranges. Moreover, the combinations of three colors for the gamut of 115% NTSC and 110% NTSC are plotted in pictures, respectively.

Citation Download Citation

Meng Liang, Manning Fan, Debo Guo, Guangyi Liu, Guohong Wang, Fuhua Yang, Liangchen Wang, Yiping Zeng, and Jinmin Li "Research on color matching of LED backlight for large-color-gamut LCD application", Proc. SPIE 6841, Solid State Lighting and Solar Energy Technologies, 68410Y (4 January 2008); https://doi.org/10.1117/12.760014

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