Nanook on Nostr: dicey QLED's are a cool technology. They refer to them as transmissive because the ...

dicey (npub1y6c…27jj) QLED's are a cool technology. They refer to them as transmissive because the require a backlight like a standard LCD but instead of just blocking light that isn't the desired color, they transform the white light into a specific wavelength that is determined by the size of the quantum dot. Since they are not emmissive like OLEDs and organic like OLEDs they don't burn in like OLEDs but instead shutter the light like a conventional LCD except where an LCD uses a filter that only passes the color of interest and wastes the rest, QLEDs change all the light arriving to the wavelength of interest, and it's a precise wavelength rather than a vaguely the right color as in an LCD filter so they are much brighter. They were not really as well developed when I bought my LCD, when it craps out I will probably go that route. Some people prefer the OLED look to QLED, I don't really know why, only difference I see is brightness and they excel at that. The only real advantage they have over my existing LCD is brightness and more accurate saturated color, especially in the deep red portion of the spectrum. Unlike existing sets you could include a violet pixel if you wanted to to extend the regular viewing spectrum past blue but since existing cameras don't have a pixel to record that color and the video standards don't have a violet standard, there would be no way to implement that without a completely new standard. But in principal you can make any color pixel you want simply by varying the wavelength of the quantum dot. And since it's converting the light received from the backlight into the appropriate color, it does not need to have matching spectrum in the backlight, though I do not know if QLED's are capable of up converting or only down coverting but UV LEDS exist so not a real issue in either case.