Additional color primaries can widen the color gamut of a display, since it is no longer limited to the shape of a triangle in the CIE 1931 color space. Recent technologies such as Texas Instruments's "BrilliantColor" augment the typical red, green, and blue channels with up to three other primaries: cyan, magenta and yellow. Mitsubishi and Samsung, among others, use this technology in some TV sets to extend the range of displayable colors. The Sharp Aquos line of televisions has introduced Quattron technology, which augments the usual RGB pixel components with a yellow subpixel. However, formats and media supporting these extended color primaries are extremely uncommon.