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Originally Posted by Timboli
I'm no tech guru, I'm just a hobby programmer, but the way I understand it from stuff I have read over years, is that the E-Ink method, is to create a shades of grey image by painting ink dots that stay in stasis by a trickle charge. That image is not recreated and is only painted again on some change ... Font related or page change. Because it is a minute charge, that is why the battery lasts so long.
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An eink screen requires no power whatsoever to maintain an image. Draw something on the screen, take away the power, and the image stays there.
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On the other hand, the image painted on an LCD/LED screen is constantly getting recreated, pixel-wise, hence the flickering.
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No, that's not so. An LCD screen isn't like a CRT, in which every pixel has to be periodically refreshed or else it fades. Draw an image on an LCD screen, maintain power to the screen and the image stays there, absolutely flicker-free. The reason that some people can see flickering on an LCD screen is because of the backlighting, which on modern LCD screens is done with LEDs. The way that the brightness of the screen is adjusted is to apply a voltage waveform to the LEDs, so that they brighten and dim in a very rapid cycle. For most people, it's too fast to see, but some people can see it. It's not the screen that's flickering, though, but the lighting.