Projection Display System for a Laptop Computer or a Notebook Computer
Here's a patent from 1990s direct-market PC maker Zeos, although I don't recall it ever coming to market. Instead of an LCD screen, it's got a built-in projector that can cast an image onto the machine's hinged portion, a roll-up screen, or any flat surface. I have a hard time believing it would have been practical with early 90's technology, but perhaps someone will revive it for the era of the picoprojector.
Republished with permission from PC World (view original version)