Is there a colourful display available?
E Ink can only display greyscale images with the current displays. In fact, there are some coloured E Ink displays on the market today, it’s just not only they’re ridiculously expensive, but also their colours are extremely pale and we decided not to use them until there will be premium quality available of this technology as well. Our goal is to have it ready in 2 years' time.
How does E Ink work exactly?
E Ink is the inventor of several novel types of electrophoretic ink, often called electronic ink. When laminated onto a plastic film, and then adhered to electronics, it creates an Electronic Paper Display (EPD). Although futuristic-sounding, electronic ink is actually a straightforward fusion of chemistry, physics and electronics. It's so much like paper, it utilizes the same pigments used in the printing industry today.
The two-pigment electronic ink system is made up of millions of tiny microcapsules, each about the diameter of a human hair. Each microcapsule contains positively charged white particles and negatively charged black particles suspended in a clear fluid. When a positive or negative electric field is applied, corresponding particles move to the top of the microcapsule where they become visible to the viewer. This makes the surface appear white or black at that spot.