Top layer of screen (33%) isn't working

Hi,

I have a HP pavilion f1523. I had some trouble with flickering some while ago. I knew how to solve it......I opened it...found problem and solved it........then my curiosity virus awakened and I opened everything of the screen.......till the details! So.......i touched some thing I shouldn't touch and when I reassembled the screen it worked! No more flickering...all solved.....................BUT......................just the top layer of the screen didn't work. This screen has 3 ''things'' which provide the colors in the pixels...don't really know how to explain. So 2 work and the upper one (the 3rd) isn't working. I cleaned it thoroughly, but it still isn't working.

33% of my screen is BLACK now. 66% is working fine!

does anyone know how to solve such problem?

thnx