A Quantum Dot is a human-made nanoparticle that has semiconductor properties. They’re tiny, ranging in size from 2 to 10 nanometers, with the size of the particle dictating the wavelength of light it emits, and therefore the color. When Quantum Dots are hit with a light source, each dot emits a color of a specific bandwidth: Larger dots emit light that is skewed toward red, and progressively smaller dots emit light that is skewed more toward the green.
Quantum Dots are usually applied to a sheet of film that sits as a layer in that “sandwich” in front of the LED backlight that’s used to illuminate a Liquid Crystal Display (LCD). The light passes through the LCD display stack, with the Quantum Dot color filter layer enhancing and enabling the LCD to reveal a wider and more saturated range of colors than would otherwise be possible.
