[r00fus]

It is definitely the right approach to the question "how do you engineer a folding display?".

The bigger question is "what do you need a folding display for?"...

[baby]

I think this is the wrong approach to think about. Nobody needs a folding display.

What people need are actually two contradictory (until now) goals: compactness and large screen size. Folding is one solution to solve this contradiction.

[r00fus]

Agreed. Which is why most people thought phones would have projection displays and/or keyboards a decade ago... I wonder where that all went?