What is e-ink on e-readers like kindle? How does the technology compare to a regular screen?
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A pixel on an ordinary screen is a collection of red, green, and blue lights that can shine in different combinations to produce different colours.
The pixels in e-ink displays are tiny capsules that contain positively charged black pigment and negatively charged white pigment. Different colours (white, grey, black) are made by using tiny electromagnets to push different amounts of black and white pigment to the surface of each capsule.
This means that instead of shining light directly into your eyeballs, e-ink displays use natural light and so they’re much less harsh on the eyes. Also it means that the displays can keep whatever image is on them without requiring power. On the other hand, they’re much slower than regular screens because you have to wait for the pigment to settle before you get a clear image.
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