Patent ID: 8803928

Claim:
An image display device comprising: a backlight having a plurality of light emitting blocks; a display panel to display an image based on image data which is inputted thereto, by changing a transmissivity thereof for light irradiated from the backlight for each pixel in accordance with the inputted image data; a calibration unit which carries out calibration of said display panel based on a result of measurement performed by a first measuring unit which measures the brightness and chromaticity of said display panel; a second measuring unit which measures individual temperature values of said plurality of light emitting blocks; a specifying unit which controls said second measuring unit so as to measure the individual temperature values of said plurality of light emitting blocks within a predetermined period of time, and specifies a light emitting block of which the magnitude of a change in temperature within the predetermined period of time is smaller than a threshold value; a setting unit which sets a patch image display area for displaying a patch image for calibration in a region of the display panel corresponding to the light emitting block specified by said specifying unit; and a generation unit which generates the patch image to be displayed in the patch image display area set by said setting unit; wherein said calibration unit carries out the calibration based on the result of the measurement by said first measuring unit in a case where the patch image generated by said generation unit is displayed in the patch image display area set by said setting unit.