Display device

A display device, comprising:

• a display panel comprising a plurality of data lines, a plurality of gate lines, and a plurality of pixels connected to the plurality of data lines and the plurality of gate lines;
• a data driver including a plurality of output buffers and a plurality of channels that are each connected to a corresponding one of the plurality of output buffers and a corresponding one of the plurality of data lines, the data driver configured to generate a plurality of data signals corresponding to first image data of a first line of pixels from the plurality of pixels and output the plurality of data signals to the plurality of channels through the plurality of output buffers;
• and
• a timing controller configured to output a power control signal to the data driver, the power control signal having a value that is based on a difference between the first image data of the first line of pixels and second image data of a second line of pixels from the plurality of pixels,
• wherein the data driver is configured to select a magnitude of a drive current from a plurality of different magnitudes based on the value of the power control signal and apply the drive current having the selected magnitude to the plurality of output buffers, the applied drive current amplifying the plurality of data signals corresponding to the first image data, and
• wherein the timing controller is further configured to:
• classify, for each of the plurality of channels, the value to a preset range of data change from a plurality of preset ranges of data change;
• count, for each of the plurality of preset ranges of data change, a total number of channels from the plurality of channels that are classified to the preset range of data change;
• calculate, for each of the plurality of preset ranges of data change, a weight sum value by applying a weight value that corresponds to the preset range of data change to the total number of channels that are classified to the preset range of data change;
• calculate an average weight value based on the weight sum value for each of the plurality of preset ranges of data change;
• and
• control the drive current of the plurality of output buffers based on the average weight value.