What we know

E Ink has introduced Kaleido 4, the latest version of its color e-paper display technology used in e-readers. This new generation improves on the previous Kaleido 3 by offering a wider color gamut, higher contrast, and increased brightness. Kaleido 3 screens are currently used in devices from brands like PocketBook and Onyx Boox, and Kaleido 4 aims to enhance these visual qualities further.

Why it matters

E Ink’s color e-paper technology is key for low-power, easy-on-the-eyes displays in e-readers and similar devices. The Kaleido series brought color to e-paper screens, expanding their appeal beyond traditional black-and-white displays. Kaleido 4’s enhancements could significantly improve the visual experience for users, making color e-readers more vibrant and easier to read in various lighting conditions.

What is still unknown

Details about when Kaleido 4 will be widely available, its support for different languages, and independent evaluations of its color accuracy and brightness improvements have not been disclosed. No independent tests of display quality or energy efficiency are available yet.