You can use a thermal strap to transfer heat through the laptop hinges and in to the top screen area. This kind of technique is used in aerospace and other industrial applications to transfer heat from unusual places.

But trying to do this on a laptop introduce thermal issues for the screen. LCD/OLEDs are rather heat sensitive. OLEDs especially do require good heat sinking for the performance and display life.

Edit: I realized many people might not have heard of thermal straps. Here's a quick read: https://www.techapps.com/thermal-straps with quite a few pics/examples.