OLED

OLED is a panel technology in which each sub-pixel is an organic light-emitting diode: the pixels are self-emissive and produce their own light, without backlighting. In black areas, the pixels switch off completely, resulting in absolute black, theoretically infinite contrast, and a total absence of light halos around bright objects on a dark background. Response time is measured in microseconds.

On an OLED television, these characteristics translate into a very sharp image and faithful rendering in low light. The QD-OLED variant adds a layer of quantum dots above the emissive layer, which broadens color gamut coverage and increases peak brightness, two historical limitations of OLED compared with very bright LCD panels.