Wikipedia
E Ink ("electronic ink") is a popular type of electronic paper (e-paper) display technology, characterized by a wide viewing angle and low power requirements The technology has been commercialized by the E Ink Corporation, which was co-founded in 1997 by MIT undergraduates JD Albert & Barrett Comiskey, MIT Media Lab professor Joseph Jacobson, Jerome Rubin and Russ WilcoxIt is currently available commercially in grayscale and color and is commonly used in mobile devices such as e-readers, and, to a lesser extent, digital signage, smartwatches, mobile phones, electronic shelf labels and architecture panels
E_Ink - Wikipedia, the free encyclopedia