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A few days ago we reported about a new color e-paper prototype by Ricoh, and now we have some more details. Ricoh used a novel method which involves stacking three layers of electrochromic panels, one on top of the other, each reflecting different colors (yellow, cyan, magenta). This can create color pixels without sub pixels. All three layers are driven by one LTPS TFT.
The display on show was 3.5" in size (113ppi) with a 27% color gamut (NTSC).
Sony is showing a new OTFT driven E Ink prototype. The 13.3" panel offers 1200x1600 (150ppi) resolution, 10:1 contrast ratio, 16 shades of gray and can be bent to a curvature radius of at least 5mm. Indeed had a cool demo showing how the panel bends. This panel is monochrome (they also had a color 13.3" flexible e-paper prototype on show).