There are multi-pigment color e-ink displays that don't use a filter array. E-In... | Hacker News

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		sho_hn on April 24, 2023 \| parent \| context \| favorite \| on: A WiFi color eInk picture frame There are multi-pigment color e-ink displays that don't use a filter array. E-Ink's ACeP range uses four pigments (CMY+white). The white pigments are reflective, the others are transparent, and you basically sort of sort/stack them with different drive voltages, combining different pigments above white while leaving others below the white layer. I think OP is dissatisfied even with greyscale e-ink panels, though.

layer8 on April 24, 2023 | [–]

That’s right. I could live with pastel colors for graphics (or with grayscale) if at least the white was white and the black was black.

crazygringo on April 24, 2023 | [–]

Oh wow, TIL. Thank you. Hadn't realized that was a new development. Just looked it up and the physics behind it sounds... extremely complicated.

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