It turned out that Microsoft acquired a patent for a terminal that can fold in two and fold in three at a tablet size

It became clear that Microsoft acquired a patent for a terminal that can be collapsed. Prospects to be released around April 2017Surface Phone"Although this technology is not installed in the market, it is a patent with quite ambitious content.

Microsoft Patents a Foldable Device That Morphs from Phone to Tablet | Digital Trends
http://www.digitaltrends.com/computing/microsoft-patents-device-that-morphs-from-phone-into-tablet/

A new Microsoft foldable device patent more more grist for the Surface phone rumor mill | PCWorld
http://www.pcworld.com/article/3158205/windows/a-new-microsoft-foldable-device-patent-offers-more-grist-for-the-surface-phone-rumor-mill.html

This patent is "patent number 9, 541, 962" filed on October 16, 2014 and acquired on January 10, 2017 by Microsoft, concerning "mobile computing terminal with flexible hinge structure".

United States Patent: 9541962


Looks like this. Memory with OS loaded with application and hardware, hardware incorporating sensors, orthodox as a mobile terminal.


However, it is possible to collapse like this.


The terminal has a structure like two panels connected by a flexible hinge and can be folded in either direction.


Also, there are also terminals with three panels connected.


It is possible to fold in three. The hinge part has flexibility and it seems that it can be folded alternately in the form like "Z" or collapsed inside.


Depending on how you fold, also to such a triangular prism.


Apart from folding terminals, sliding terminals as well.


And there seems to be an orthodox notebook type terminal which has another hinge structure from the folding terminal.


It seems thick to put in the pocket if it is in a folded state, but I would like to touch such an unusual terminal as well.