Screens are simultaneously windows and borders.
In architecture glass walls extend the house dimensions to an infinite space. Look at the Farnsworth House by Ludwig Mies van der Rohe and you will see how the large windows make the indoors blend with the outdoors. It is an extension of a beautiful landscape. Then there are infinity pools, which, for example, give an illusion that you can swim to the horizon. The idea of dissolving borders and edges around elements lets the viewer focus on the whole view rather than separate elements. Glass walls and infinity pools are both prolonging the view on a beautiful landscape by blending with the environment and dissolving the borders and edges.
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