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Indeed, red was the first visible LED color to be practical in production. Blue came much later.
by analog31 3y ago
Indeed, red was the first visible LED color to be practical in production. Blue came much later.
- btbuildem 3y agoBlue LEDs were deemed a huge breakthrough at the time; they enabled full-colour LED displays (think large panels viewed from a distance) by adding the long-missing B in the RGB.
- wlonkly 3y agoEnough of a breakthrough to be worthy of a Nobel prize, even: https://medium.com/predict/why-blue-led-earned-nobel-prize-if-reds-and-greens-already-existed-for-decades-d03e31a6fd8f https://medium.com/predict/why-blue-led-earned-nobel-prize-i...
- analog31 3y agoIndeed, and they are also the basis of single element white LEDs, which are a blue led covered by a white phosphor. The inventor of the bright blue led worked for a chemical company that made phosphors, and invented the white one as well.
- cryptonector 3y agoThey also enabled bueray DVDs.