Overview
- E Ink announced Kaleido 4 as the next generation of its color e‑paper, claiming doubled color‑gamut volume plus 15% higher white reflectance, 50% greater contrast, and refresh rates up to 18 frames per second.
- The company and reviewers highlight a new oxide‑TFT backplane that drives faster refresh and makes the screens capable of short video playback and snappier page turns.
- Hanvon Technology is the first confirmed adopter with its M10C II tablet, which E Ink says will be sold only in China, leaving global availability and broader adoption unconfirmed.
- Reports disagree on the panel’s color capacity — some outlets cite about 4,096 discrete colors while E Ink describes a gamut measure it equates to over 40,000 colors — so the true practical color performance remains unresolved.
- Kaleido’s color‑filter‑over‑black‑and‑white pigment design keeps refresh fast and improves text legibility compared with past Kaleido models, but major makers must adopt the panel and independent device reviews must verify improvements before color e‑readers gain wider appeal.