Observe color e-ink displays under a 230x digital microscope

in short: Color e-ink displays are becoming increasingly common in e-readers and tablets. They’re still not as vibrant as the full-fledged panels used in smartphones, but their ability to display thousands of different colors is a solid starting point for the emerging technology. As JerryRigEverything’s Zack Nelson discovered, they also look pretty neat under a microscope.

Nelson recently got his hands on Boox’s Note Air 3, which uses the same E-Ink Kaleido 3 display technology as Kobo’s new Clara Color and Libra Color e-readers. Before conducting the usual battery durability tests, he examined the display using Dino-Lite’s 230x digital video microscope.

The microcapsules look completely different compared to traditional pixels when enlarged, and here we can verify that it’s an RGB display, meaning it uses a mix of red, green, and blue primary colors to make up a range of other colors – 4,000, to be exact. say. That’s far fewer than the millions of colors modern monitors can produce, but suitable for graphic novels or color comics.

E-ink displays are also incredibly energy efficient, but that’s another topic.

Also worth noting is the resolution difference between color and black and white. The color resolution of this slate is limited to 1,240 x 930 (150 PPI), but the black and white resolution can be doubled to 2,480 x 1,860 (300 PPI), which can be seen after zooming in.

The tablet uses textured (albeit durable) plastic in place of the cover glass, and it’s rated four for scratches and five for deeper grooves on the Mohs scale of hardness…or at least, that’s what it seems at first glance. Upon closer inspection, we can see that Boox simply attached a layer of plastic to the traditional glass cover. Peeling off the plastic reveals the e-ink microcapsules more clearly.

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