QLED is an alternative to OLED screens, it is an evolution of LCD technology, the "Q" comes from the term "Quantum Dot".
These screens have a back panel that emits blue light, this blue light is transformed by each of the quantum dots into the desired color depending on the electrical current applied to it.
Among the advantages of QLED screens we find that they represent colors much better thanks to the nanocrystals used that can produce pure monochromatic red, green and blue colors and thanks to an LED panel with hundreds or thousands of individually controlled points for lighting they provide purer blacks.
Other advantages are that these types of screens need around 30% to 50% less energy to work than LCD screens and, unlike OLED screens, they have a much longer life time and are easier to recycle. by using the same material for each color.