Microsoft patent shows dual screen device with a screen on its hinge

Foldable devices are a young, expensive and fairly niche market right now, but there's already significant enthusiasm behind it. Unless augmented reality (AR) turns out to be the next big thing and makes traditional form factors obsolete, foldables are likely the future.

In recent months, Microsoft introduced its smartphone, featuring dual screens held together by a conventional hinge, instead of using a single plastic screen that bends in the middle, as has become the standard. It has a pair of 5.6-inch displays and is running Android. A promising productivity device, the Duo's design ...