The world's best motion fidelity LCD, which is based on scanning backlight technique, was developed. The MPRT
(Motion Picture Response Time) of 4.0 ms for an LCD is achieved while a CRT has about 3.7 ms and a PDP still has
about 8.1 ms. It means that the last weakness bothering an LCD so far compared with a PDP and a CRT was cleared.
Moreover, 4.0 ms MPRT is a number at which people cannot perceive motion blur for moving images under most
conditions and therefore the MBR LCD is superior to a PDP by above 50% and equal to a CRT in motion blur.
The purpose of RGBW Quad Structure Technology is to realize higher brightness than that of normal panel (RGB stripe structure) by adding white sub-pixel to existing RGB stripe structure. However, there is side effect called 'color shift' resulted from increasing brightness. This side effect degrades general color characteristics due to change of 'Hue', 'Brightness' and 'Saturation' as compared with existing RGB stripe structure. Especially, skin-tone colors show a tendency to get darker in contrast to normal panel. We’ve tried to minimize 'color shift' through use of LUT (Look Up Table) for linear arithmetic processing of input data, data bit expansion to 12-bit for minimizing arithmetic tolerance and brightness weight of white sub-pixel on each R, G, B pixel. The objective of this study is to minimize and keep Δu'v' value (we commonly use to represent a color difference), quantitative basis of color difference between RGB stripe structure and RGBW quad structure, below 0.01 level (existing 0.02 or higher) using Macbeth colorchecker that is general reference of color characteristics.