A laptop/netbook/tablet that can be folded into an almost (I’m kind) smartphone-sized device, and that can also be used partly unfolded.
Conceptual ‘Fujitsu Lifebook X2’ folds into quarters, makes regular notebooks look lame – Engad
Note the use of the second display from the top as a keypad, that I hinted about in Two screens, one too many? – Abiro