Display device and method of operating display device

A display device, comprising:

• a timing controller including a reference coordinate generator and an image processor, the reference coordinate generator to initialize an image display reference coordinate as a random coordinate among coordinates included in a shift pattern when power is applied to the display device, the reference coordinate generator to shift the image display reference coordinate from the random coordinate along the shift pattern, the image processor to generate an output image by shifting and scaling an input image based on the image display reference coordinate, the timing controller to generate a data driver control signal and a scan driver control signal based on the output image;
• a display panel including a plurality of pixel circuits;
• a data driver to generate data signals based on the data driver control signal, and provide the data signals to the pixel circuits through a plurality of data lines;
• a scan driver to generate scan signals based on the scan driver control signal, and provide the scan signals to the pixel circuits through a plurality of scan lines;
• and
• a power controller to provide a supply voltage and a ground voltage to the display panel to operate the display panel.