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Why do backlight LEDs burn out and go blue?

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wraper:

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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