The other factors are the inverter and the backlight so don't tread on that screen just yet. I assume you've plugged the laptop into a conventional monitor to check it wasn't just a graphics car glitch.
The other night I was watching a DVD in my Gateway P-172S FX laptop, when all of a sudden the screen dimmed to black, like it was on a light switch. We could still hear the audio, and figured maybe it was the screen saver... but it wasnt. Turning it on again, we could very faintly see the Gateway logo, and the Windows logo, followed by the login screen (sound was working as well). We hit enter and we can barely see anything. No pointer showed up either. The screeen looked like an oil blotch.
I took out my screen and I plan to get a replacement. What could have caused this? When I had Ubuntu installed, it kept telling me my battery might be broken because of poor charging. Could this have been a factor? Could there be more factors?