While the display panel was manufactured by E Ink, featuring the company's "E Ink Pearl" front plate and its "Mobius" back plate base material, Toppan Printing optimized the highly accurate deposition of proprietary colour filters on the flexible back, yielding brighter colour tones.
The prototype has a display size of 691.2x388.8mm and is overlaid with a colour filter of RGBW square pattern at a pixel count of 1,280x720 (for a total of 2,560x1,440 sub-pixels on the back plate) at a pixel pitch of 540μm. It boasts a contrast ratio of 10-20:1 for a purely reflective display and can display 4,096 colours.
The two companies are hoping to commercialize large flexible colour e-paper displays by the end of 2017.
Visit Toppan Printing at www.toppan.co.jp/english/
Visit E Ink at www.eink.com