Quantum dot display
display technology that uses quantum dots, semiconductor nanocrystals which can produce pure monochromatic red, green, and blue light
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.
Working principle
The idea of using quantum dots as a light source emerged in the 1990s. Early applications included imaging using QD infrared photodetectors, light emitting diodes and single-color light emitting devices.
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This entry incorporates text from “Quantum dot display” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.