system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are bezels needed on electronics like cell phones, TVs and laptops?
gpt
Just to follow on from some of the earlier answers : LCD screens have multiple layers to them, so need to have somewhere to route the cables to the middle layer. You can't do this from behind without drilling a hole through the back layer - which is the backlight - and leaving a dead patch on the screen.

Even if you put all these wires on one side, the remaining three sides still need something to hold all the layers together - putting glue between them would hurt the image quality.

That said, there's no reason the frame couldn't be made from a transparent plastic, transparent aluminium, or another see through material. It would look ugly from an angle where you can see the layers, which is probably the only reason it hasn't been done.

Edit to add : Also, light bleeding. You probably don't want light from the backlight illuminating the stand during a dark scene - as some would be leaking out the bottom and sides of the screen without going through the image layers, the surroundings would be illuminated bright white, which would produce glare on the picture that could drown out darker scenes.