Electronic paper, sometimes referred to as electronic ink, ink, or electrophoretic display, is a display device that mimics the appearance of ordinary ink on paper. [1] Unlike traditional flat screens that emit light, electronic paper displays reflect ambient light like paper. This makes it easier to read than most luminescent displays and provides a wider viewing angle. The contrast ratio of electronic displays available since 2008 is approaching the value of newspapers, and the newly developed (2008) display is slightly better. [2] An ideal e-paper display can be read in direct sunlight without the image appearing to fade. Many e-paper technologies store static text and images indefinitely and indefinitely. Flexible e-paper uses a plastic substrate and plastic electronics for the display backplane. Applications for electronic visual displays include electronic shelf labels and digital signage, [3] bus stop timetables, electronic signs, [4] smartphone displays, and e-book readers that can display digital versions of books and magazines.
