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????? Blue LEDs made white LEDs & LED displays possible. And blue light being bad for your circadian rhythm is just as true for an LCD display as it is an LED d

• bombcar 3y ago
  Right after the blue LED was possible, everything that wanted to appear "high value" was sticking them in as power indicators, but they were much brighter than previous LEDs. I was at college at the time and you could read a book by the pulsating sleep blue lights from equipment.
  • mdip 3y ago
    As I read your statement sitting in my "bedroom office", I notice: My Vizio TV which has a piece of white electrical tape[0] with aluminum foil underneath. Incredible failure of engineering that has a setting to disable the power LED, however, that setting is ignored if you use the "black screen" option that kills the screen while the TV continues playing ... a feature you are likely to only use if you like to sleep to the noise, but not the light, of the television. My switch has a sock wrapped around the front with a piece of cardboard jammed in it to keep the blinken-lights from creating strobe effects all night. My monitor, multi-USB charger, have similar black-tape treatments that the TV received and the power outlet next to my dresser has a piece of white tape on it -- it's a smart plug and I'm guessing there was an indicator light under that. The thrown together solutions indicate the worst part. You tend to not discover it's a problem until you wake up at 2:00 AM and you can't get back to sleep because it's bright as early morning in the bedroom. [0] It was all I had at the time.
    • themerone 3y ago
      Have you tried a sleep mask? I had to try a bunch before I found one (Manta Mask) that was comfortable and stayed on.