Which display technology is most commonly used in dedicated e-reader devices such as the Amazon Kindle or Kobo Reader?
OLED
E Ink
LED
LCD
E Ink (electronic ink) is a form of electronic paper that is bistable: it draws power only when the image changes. This gives e-readers exceptionally long battery life and lets the screen remain easily readable in bright sunlight-features ideal for digital books. LED, LCD, and OLED panels are emissive or back-lit technologies typically found in phones, tablets, and monitors; they consume more power and are more reflective, so manufacturers rarely choose them for e-readers.
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