Multi-primary colour display device

A multi-primary-color display device comprising a plurality of pixels which are arranged in columns and rows to form a matrix pattern, each of the plurality of pixels being comprised of a plurality of subpixels that represent mutually different colors and that include at least four subpixels, the device further comprising:

• a multi-primary-color display panel in which each of the plurality of pixels is comprised of the plurality of subpixels;
• and
• a signal converter which converts an input image signal representing the three primary colors into a multi-primary-color image signal representing four or more primary colors,
• wherein the display device assigns the plurality of subpixels that form each said pixel to a plurality of virtual pixels and is able to conduct a display operation using each of the plurality of virtual pixels as a minimum color display unit,
• the signal converter includes:
• a low-frequency multi-primary-color signal generating section which generates, based on the input image signal, a low-frequency multi-primary-color signal that is a signal obtained by converting low-frequency components of the input image signal into multiple primary colors;
• a high-frequency luminance signal generating section which generates, based on the input image signal, a high-frequency luminance signal that is a signal obtained by converting high-frequency components of the input image signal into a luminance;
• and
• a rendering processing section which performs rendering processing on the plurality of virtual pixels based on the low-frequency multi-primary-color signal and the high-frequency luminance signal, and
• the signal converter further includes a magnitude of correction calculating section which calculates, based on the input image signal, the magnitude of correction to be made on the high-frequency luminance signal during the rendering processing.