I want to apply thermal grease on my laptop GPU, but I've noticed there is a film sticked to the GPU chipset around the core. Personally I think it's an antistatic film, because it is covering those small resistors around. But I am not sure about it. Can anyone explain what is it for? And can I remove it at all? Because it seems some old thermal grease got under it and I want to unstick it at all.
The purpose of the film is to aid automatic thermal paste application. Basically machines will apply thermal paste to an area and the film is there to make sure that the that area mostly covers the GPU itself and doesn't contaminate those SMD components you're seeing.
You can freely remove it because it doesn't do anything at this point and applying thermal paste by hand (if you know how to do it) is much more precise and the chance that thermal paste will leak everywhere is lower.