For a display device having a plurality of subpixels disposed in an active area of a display panel, a method for processing a compensation data of the display device may include reconfiguring an order of unit patches having the compensation data so that the unit patches having similar reference values are positioned adjacent to each other when the compensation data are compressed. The disclosed method can improve the compression process efficiency where a compression loss can be reduced, and an effect of an image quality improvement using the compensation data can be enhanced.