Quantum dot display

A quantum dot display is a display device that uses quantum dots (QDs), semiconductor nanocrystals which can produce pure monochromatic red, green, and blue light.

QDs are either photo-emissive (photoluminescent) or electro-emissive (electroluminescent) allowing them to be readily incorporated into new emissive display architectures. Quantum dots naturally produce monochromatic light, so they are more efficient than white light sources when color filtered and allow more saturated colors that reach nearly 100% of Rec. 2020 color gamut.

As of June 2025, all commercial products, such as LCD TVs branded as QLED, employ quantum dots as photo-emissive particles; electro-emissive QD-LED TVs exist in laboratories only.

LED-backlit LCDs are the main application of photo-emissive quantum dots, though it is applicable to other display technologies that use color filters, such as blue/UV organic light-emitting diode (OLED), MicroLED, or QNED display panels. QD-OLED displays, which use blue OLED panels with QD color filters, started coming to market in 2023. QD-OLED and QD-LED displays can achieve the same contrast as OLED and MicroLED displays with "perfect" black levels in the off state, unlike LED-backlit LCDs.


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