E Ink - Wikipedia
https://en.wikipedia.org/wiki/E_Ink
E Ink ("electronic ink") is a brand of electronic paper (e-paper) display technology commercialized by the E Ink Corporation, which was co-founded in 1997 by MIT undergraduates JD Albert and Barrett Comiskey, MIT Media Lab professor Joseph Jacobson, Jerome Rubin and Russ Wilcox.
E Ink Films | E Ink Pearl
https://www.eink.com/e-ink-film.html
E Ink Pearl modules consist of a TFT (thin film transistor), Ink layer and Protective Sheet. In addition, product designers can include a touch solution, which is incorporated into the module stack.