It's an interesting idea, but even if you had the memory to hold it, you would need a 10,160 (80x127 grid) of the highest resolution LCD displays to be able to display a single slice through it. And that would be roughly 38 meters square!

At $8,000 a throw, that comes to around US$80 million. You might get a bulk purchase discount, but I doubt it would really help :)

On a more serious note, given that you are going to be unable to display the whole thing, or even a significant chunk of it in one go, it would be best to look at taking a different tack. Rather than building the whole thing and then displaying bits of it, you could build the bit you can display only, and then as you scroll around, you delete the bits that are leaving the screen and draw the new bits on the other side (top/bottom etc.). This is basically how those mega-world video games work.

That said, I am having great difficulty in tryng to visualise what it is you are attempting to display. Maybe you could try and explain using a limited alphabet (a-e?) and some ascii art?