Display device and method of operating the same

A display device comprising:

• a display panel;
• a memory configured to store a plurality of compensation signals respectively corresponding to a plurality of blocks of the display panel;
• and
• a driving controller configured to receive an input image signal, to compensate for the input image signal based on the plurality of compensation signals, and to output an output image signal,
• wherein the driving controller includes:
• a first to a fourth memory configured to store the plurality of compensation signals from the memory;
• a compensation unit configured to compensate for the input image signal based on first to fourth compensation signals respectively provided from the first to fourth memories and to output the output image signal;
• and
• a fifth memory configured to store one of the plurality of compensation signals as a reference compensation signal,
• wherein the plurality of compensation signals stored in the memory include first row compensation signals corresponding to blocks disposed at a first row from among the plurality of blocks and second row compensation signals corresponding to blocks disposed at a second row from among the plurality of blocks,
• wherein some of the first row compensation signals are stored in the first memory, the others of the first row compensation signals are stored in the second memory, some of the second row compensation signals are stored in the third memory, and the others of the second row compensation signals are stored in the fourth memory, and
• wherein the first to fourth memories store difference values of the reference compensation signal and the plurality of compensation signals from the memory.