Well let's throw this one in for a change.

I reckon that we could have a tablet driven by OMAP5 and IPS 14 Inch running windows RT to perform all normal duties someone with a tablet would, you limit the amount of ports and peripheral on this device to allow a sizeable battery to be allocated.
when docked the computer on the tablet shuts down, however the 14 inch IPS is now used with the hardware on the dock and recharging the battery simultaneously.

Here is the thing Tajoh111, I reckon this can be put together using readily available technology and might actually be a lot simpler than what it sounds since all "docking" does is shut down the tablet computer, recharge your battery and make use of the glorious IPS screen as an actual screen.

If anything said in this post seems wrong or contradictory please debunk as you please.