Circuit device and display system

A circuit device that executes local dimming control on a display device including a display panel and a backlight having a plurality of two-dimensionally arranged light source elements, the circuit device comprising:

• a luminance analysis circuit configured to execute luminance analysis on image data and obtain dimming information for the local dimming control based on a result of the luminance analysis;
• a luminance information calculation circuit configured to calculate, based on the dimming information on n×m light source elements arranged around a target pixel for color correction in the local dimming control among the plurality of light source elements, each of n and m being an integer of two or more and eight or less, luminance information indicating a luminance of light reaching the target pixel from the n×m light source elements;
• and
• a color correction circuit configured to execute color correction on image data on the target pixel based on the luminance information and output the image data after the color correction to the display device,
• wherein the luminance information calculation circuit calculates the luminance information based on an attenuation characteristic of light reaching the display panel from each of the n×m light source elements and distance information on a distance between each of the light source elements and the target pixel, and
• the luminance information calculation circuit calculates the luminance information based on the distance information and a table in which the attenuation characteristic is associated with the distance information.

A circuit device that executes local dimming control on a display device including a display panel and a backlight having a plurality of two-dimensionally arranged light source elements, the circuit device comprising:

• a luminance analysis circuit configured to execute luminance analysis on image data and obtain dimming information for the local dimming control based on a result of the luminance analysis;
• a luminance information calculation circuit configured to calculate, based on the dimming information on n×m light source elements arranged around a target pixel for color correction in the local dimming control among the plurality of light source elements, each of n and m being an integer of two or more and eight or less, luminance information indicating a luminance of light reaching the target pixel from the n×m light source elements;
• and
• a color correction circuit configured to execute color correction on image data on the target pixel based on the luminance information and output the image data after the color correction to the display device,
• wherein, when the plurality of light source elements of the backlight are arranged in a non-square lattice, the luminance information calculation circuit calculates the luminance information assuming that s×t light source elements including the n×m light source element are virtually arranged in an s×t square lattice, s and t being integers such that s×t is an integer larger than n×m.