OLED display have nearly nothing to do with Eink panel. And if the POlymerVision is near bankrupt, this is because they got a lot of problem with their flexible screen technology, or the readius will be out long time before.
Do you know how work resistive touchscreen? there are two layer with something like a fluid between them and when you press on it, the two layer become more or less in contact, and that's how the "touch" come. If you fold a touchscreen, you will make some part of the two layers in contact, creating falses touchs
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