Yes, Inverter. My MacBook's screen has some uneven backlighting at cold boot, is that the inverter?

Yeah screens are dirt cheap these days if you buy just the panel. I also found some 20$ screens that are guaranteed to work but have some scratches on them.

http://cgi.ebay.com/Apple-MacBook-A1181-LTN133W1-L01-13-3-GLOSSY-SCREEN-RD_W0QQitemZ250558052926QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3a566c7a3e#ht_2378wt_1167

I paid zero dollars for my screen because I had it in my parts, after I received the two water damaged macbooks.