Display device including a plurality of controllers performing local dimming

A display device comprising:

• a backlight unit including a plurality of light emitting blocks;
• a display panel including a plurality of pixel blocks respectively corresponding to the plurality of light emitting blocks;
• a first controller configured to:
• receive first image data for a first portion of the display panel;
• and
• generate first block representative value information for first pixel blocks located at the first portion of the display panel among the plurality of pixel blocks based on the first image data;
• and
• a second controller configured to:
• receive second image data for a second portion of the display panel;
• and
• generate second block representative value information for second pixel blocks located at the second portion of the display panel among the plurality of pixel blocks based on the second image data,
• wherein the first controller is configured to receive the second block representative value information from the second controller, and the second controller is configured to receive the first block representative value information from the first controller,
• wherein each of the first and second controllers are configured to generate duty information for the plurality of light emitting blocks based on the first block representative value information and the second block representative value information, and to generate light profile information of the backlight unit based on the duty information, and
• wherein the first controller is configured to compensate the first image data based on the light profile information, and the second controller is configured to compensate the second image data based on the light profile information.