All posts tagged Quantization

PenTile Display looks Pinkish?

Not really. When PenTile OLED is used in applications that run in 5-6-5 color modes, it’s possible for whites at low levels of luminance to have a quantization error that has slightly more red than green. As shown in the chromaticity chart below, such a minor shift away from white toward red or magenta is easily seen by the human vision system.  With displays of very high contrast any shift toward red will be perceived as pink. The very same displays where viewers saw such “pinkishness” showed no such artifact in other applications that were running in 24-bit color mode.

Image credit: http://lightemittingdiodes.org