If you're making a portable you probably need something to watch it on. (Unless you want to guess what's happening in the game, but I wouldn't advise that) Anyway, this forum is your "Hacking a pocket TV/screen" one-stop solution. Share your experiences and knowledge here.
Yep, the top section is the transformer for the backlight, it can be de-soldered or cut off completely if you LED mod the screen.
Even if you decide not to cut the PCB down, you're best off de-soldering it anyway to reduce power draw.