Patent ID: 8525823

Claim:
An image display device, comprising: a liquid crystal panel; a backlight having a plurality of light sources which emit lights having different peak wavelengths, emission intensities of the light sources being independently controllable, respectively; an intensity setting unit to set intensities of the plurality of light sources, respectively; a presumption unit to presume color information of a transmitted light to be obtained when a mixture of lights emitted from the light sources at the intensities passes through the liquid crystal panel, based on intensity information representing the intensities set by the intensity setting unit; a signal correction unit to correct an input video signal according to the color information, and to obtain a corrected video signal; an error calculation unit to presume a display image to be obtained when the liquid crystal panel receives the corrected video signal and the mixture light enters into the liquid crystal panel, the error calculation unit calculating display errors in brightness and color between the presumed display image and an input image corresponding to the input video signal; and a control unit to control setting the intensities of the light sources as the emission intensities of the backlight so that the display errors obtained from the error calculation unit can be minimum.