Most people when they think about ePaper displays immediate think about E Ink. E Ink Holdings (EIH) has been very successful in bringing its ePaper displays to the market - and today these are prevalent in e-readers, electronic shelf labels, e-notebooks and many other applications. While EIH indeed has a clear leadership in the ePaper market, it is not alone.
But first of all, it is important to note that there are many display technologies that could be called ePaper displays. Most people would only consider truly bi-stable displays able to show dot-matrix images as ePaper displays, but some other technologies that are not truly bi-stable also exist and some consider these as ePaper displays as well - for example Memory LCDs. In addition some simpler displays technologies that are similar to ePaper in properties also exist. We will discuss both these technologies in this article.