The Art of Better Pixels

The quality of color television has been dominated by the physics of the cathode ray tube (CRT) in determining the spatial resolution, the image dynamic range, the color gamut, and even the frame rate of the images displayed. Ultrahigh-definition (UHD) as specified in the International Telecommunication Union Radiocommunication Sector Recommendation ITU-R BT.2020 (Rec. 2020) was the first standard to partially break free from these constraints; however, it retained the 100 candela/m2 CRT reference brightness limit and the corresponding electro-optical transfer function (EOTF) based on the gamma characteristic of the CRT.