| 摘要 |
PROBLEM TO BE SOLVED: To reduce electric power consumption. SOLUTION: This device has at least a liquid crystal display panel 100 having color filters corresponding to three primary colors and a back light unit 103 arranged on the rear surface of the liquid crystal display panel 100. At this time, the direction where the luminance of the light radiated from the back light unit 103 to the liquid crystal display panel 100 attains 50% of the luminance measured in the normal direction of the liquid crystal display is expressed by the angle measured with respect to the normal and is defined as a luminance half-angle. The deviations in the chromaticity of the case the respective primary colors displayed on the liquid crystal display 100 are observed from the arbitrary direction deviated at a certain angle from the normal direction corresponding to the chromaticity of the case the colors are observed from the normal direction are expressed by the coordinate values by C.I.E.1931 x-y chromaticity coordinates. The range of the observation angles from the normal direction where the deviation in the (x) coordinate for red primary color among the deviations of these chromaticity coordinate values does not exceed 0.0314, the deviation in the (y) coordinate for green primary color does not exceed 0.0273 and the deviation in the (x) coordinate for blue primary color does not exceed 0.0177 is defined as an isochromatic visual angle range. In such a case, the isochromatic visual angle range > luminance half-angle are satisfied. |
