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Originally Posted by John F
Aren't most LCD screens now lit by LEDs? So aren't AMOLED and LCD basically the same, as far as backlighting is concerned?
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AMOLED screens are light emitting LED pixels. They have no backlight. They don't need one.
LCD screens are color changing pixels that don't emit light so they have to have a backlight behind the LCD, usually LED.
The reason that's significant is that with the LCD screen the backlight is behind the entire LCD screen and shining through it, even in the dark areas, although not as much. With AMOLED only the bright pixels emit light. That's one of the chief advantages of AMOLED because since the dark pixels don't emit light and there's no backlight the darks are much darker. For the reader that also means less light hitting your eyes.
It is true that in both cases the light that hits your eyes is from an LED but with the LCD screen at the same effective brightness a lot more light reaches your eyes. I should mention that I'm no scientist or engineer and I only know about this stuff from reading about it. I'm not an expert.
Barry