A display device including a plurality of blocks of pixels each of which includes a red subpixel, a green subpixel, and a blue subpixel, each of the blocks including pixels in a form of a matrix having N rows and M columns includes a first active element shared among three subpixels of each pixel and a second active element connected to a second active element formed in each subpixel connected to the first active element. Ma gradation voltage lines (Ma is an integer; M≧Ma≧2) respectively of red, green, and blue subpixels in a direction of the column are commonly connected. The display device directly displays a compressed image signal without developing the image signal into a bit map in which each subpixel has gradation information.