Apple is considering adding a rollable display for its products, including the iPhone, Apple Watch and many other items.
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One main roller would contain the display when stowed, while optional secondary rollers would help unravel it when needed, in order to keep the screen stable when extended. This wouldn't necessarily replace the standard fixed screen on your iPhone or iPad, but could be a secondary display you could pull out when needed. For example, the fixed display could become a touch keyboard, while the rollout display could be used to display content.
Apple suggests the display could be housed in a transparent structure, allowing it to serve a purpose at all times. Apple also builds on this idea by proposing a foldable device concept that uses this rollable display to make sure it can bend without damaging the screen's components.
And while this technology makes most sense in a tablet or phone from our perspective, Apple has made sure to cover all its bases in the text of the patent. The company suggests this idea could be implemented in larger items like a laptop, or smaller ones like a watch or glasses.
Of course, patents are just until put into practice. And should Apple decide to make this rollable display a reality, it could still be years before we see it on a consumer product.