A display comprises a display panel and an image compensating portion. The display panel comprises a main display region and a periphery display region outside the main display region. Each of the main display region and the periphery display region respectively comprises a plurality of pixels. When a pixel of the main display region and a pixel of the periphery display region have the same original gray scale, an intensity of lights from the pixels in the periphery display region is greater than an intensity of lights from the pixels in the main display region.