Signal processing method, signal processor, and display device including signal processor

A signal processor for processing input image data of a display device comprising a plurality of pixels, the plurality of pixels comprising a plurality of first pixels and a plurality of second pixels alternately arranged in horizontal and vertical directions, each first pixel comprising a green subpixel and a red subpixel disposed in a diagonal direction relative to the horizontal and vertical directions and each second pixel comprising a green subpixel and a blue subpixel disposed in the diagonal direction, the signal processor comprising:

• an input gamma unit which performs a gamma-conversion on a first input image data corresponding to the red subpixel in the each first pixel and a second input image data corresponding to the blue subpixel in the each second pixel;
• and
• a subpixel rendering unit which distributes the gamma-converted first input image data corresponding to one of first pixels to the gamma-converted second image data of one of the second pixels by a first ratio, wherein the one of the second pixels is adjacent to the one of the first pixels in the vertical direction, and distributes the gamma-converted first input image data corresponding to the one of the first pixels to the gamma-converted second image data of another of the second pixels by a second ratio, wherein the anther of the second pixels is adjacent to the one of the first pixels in the horizontal direction.