HOW DO U MAKE A ROLLABLE DISPLAY

Using glass as a substrate (base) isn’t an option, as glass doesn’t bend. Thin plastic films are ideal, but they melt if you use the high process temperatures normally involved in manufacturing silicon-based TFTs (Thin Film Transistors) like those used in laptop displays.

The answer lies in organic/polymer TFTs. These can be made using low temperature processing techniques, so you can use plastic as a substrate for the TFT layer. Together, the base and the TFT layer are just 25 μm thick.



On top of this base and TFT layer, you still need a display effect technology that’s also flexible enough to roll – such as the electronic ink we’re using today By combining active-matrix polymer driving electronics with a reflective electronic ink front plane on an extremely thin sheet of plastic we get a rollable display.