The secret is (shocker) proprietary Sharp technology called Quattron. The label designates TVs in Sharp’s line that have four subpixels instead of the usual three. With a yellow subpixel in addition to the typical red, green and blue ones, Quattron TVs are capable of producing “billions” more levels of color than competitors, Sharp claims. Quattron TVs are capable of producing “billions” more levels of color than competitors, Sharp claims.
They can also do a decent job of simulating 4K video, apparently. Sharp showed a closed-door demo of the technology at CES in January, putting a 1080p Quattron TV next to a 4K set playing native 4K content (which was down-rezzed to 1080p for the Quattron). By intelligently managing the subpixels in the Quattron screen, Sharp claims a picture that’s as good as if not better than 4K.