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E Ink displays

Facts for Prelims (FFP)


Source: IE

 Context:  A new crowdfunded phone, called the Minimal Phone, has featured a white E Ink display. E Ink displays, used in devices like the Kindle, are based on technology developed in the 1990s at MIT and owned by E Ink Corporation.


Functioning of E Ink Displays:

  • These displays utilize microcapsules filled with positively charged white particles and negatively charged black ones suspended in fluid.
  • By applying electrical charges, the particles rise to the surface, creating text and images on the display.
  • E Ink reflects light like paper, making it easier on the eyes, consuming little power as it doesn’t require backlighting, and offering better readability under bright lighting conditions.
  • E Ink has advantages like low power consumption and reduced eye strain but has downsides such as a slower refresh rate, colour limitations, and higher costs.