| General > General Technical Chat |
| Why do backlight LEDs burn out and go blue? |
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| wraper:
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| strawberry:
make so called old tech unappealing and degrade it and then replace it with more predictable (shorter) life product then add commercials at bootup and everyone is happy ;D LCD block ~1/2 backlight while white is displayed |
| PlainName:
--- Quote ---LCD block ~1/2 backlight while white is displayed --- End quote --- That makes sense - white is essentially unobstructed whereas other colours reduce the intensity because R, G or B are filtered, so without artificially reducing white it would appear too bright in comparison. |
| wraper:
--- Quote from: dunkemhigh on November 14, 2021, 01:44:25 pm --- --- Quote ---LCD block ~1/2 backlight while white is displayed --- End quote --- That makes sense - white is essentially unobstructed whereas other colours reduce the intensity because R, G or B are filtered, so without artificially reducing white it would appear too bright in comparison. --- End quote --- What? White is not artificially reduced. There is a light loss because subpixels have color filter behind them and pass only narrow range of wavelength. When 3 colors are combined in your eye, you see "white". There are also RGBW displays which add a subpixel without a color filter for better brightness/efficiency, but it reduces picture quality. |
| strawberry:
I think these are fancy RGB LEDs to increase efficiency and match LCD filters and some might be more fancy switching on/off at black spots |
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