Link to a video that made me understand how screens are mounted. I can have as many as I want in sizes given by this manufacturer in different combinations so they fit my walls where needed. They’re low in energy use LED screens.

I was mainly looking for the thickness of this mechanism to draw on my plans.

https://www.optoma.co.uk/product-details/thd1560#specifications

Other links I had a look at.

https://www.esdled.com/bim-min-flexible-curved-narrow-pixel-pitch-led-display_p41.html

This one has even smaller panels that can be curved.

6mm P6 Smart Indoor

https://field.io/project/kapsarc-vision-wall/

smaller screens with visible edges.

https://www.planar.com/products/large-format-displays/