Black Spots on LCD for Latitude D505

Question

I have my personal Laptop with brand name and model :LATITUDE D505 which I used to carry everywhere on my bussiness and personal trips.One day I keep some papers inbetween the LCD and my Laptop Keyboard and pressed the LCD to be closed.Next time, when I saw there were Black spots visible inside the LCD marked like the boundaries of the those papers which I kept.Please try to fix this problem as soon as possible.Thanks