Only third of screen showing image. Where is problem?

Hello, I don't know what happend with my iPad, maybe some one drop it on floor, I didn't.

Only 1/3 of screen is showing picture properly, 2/3 is somehow broken.

Touch panel is fully working.

Please look at video demonstration http://www.youtube.com/watch?v=x-eDnkgF5...

Whan I've already tried to fix it:

1. Firmware reset.

2. Reconnect screen data cable from motherboard and from screen itself.

My question is how fix it manually? (no repair service available)

What hardware is malfuction ?

1. it is lcd screen ?

2. it is lcd data cable ?

3. it is motherboard ?