What's with the yellow film around the CPU and GPU dies?

Question

Video cards

When disassembling the laptop, a translucent, yellowish film with a slot was found on the graphics chip and processor, from which only the crystal sticks out, and the chips themselves are all in the film. There is a suspicion that this is a thermal adhesive tape .. What can it be and what role does it play and in which case, what can it be replaced with? I am attaching a photo from the Internet of something similar to convey the essence. Thanks

Answer 1

Thermal adhesive tape (kapton), so that smd capacitors do not come into contact with the radiator.
Possible without it