Yeah, it reminded me of the gas-plasma monochrome displays that were common on "luggable" PCs in the late '80s (like this one: https://jshorney.incolor.com/p70.htm).

They were much lighter than a comparable size CRT, which was the display solution used on the original luggables from companies like Osborne and Compaq. But that was about the only good thing that could be said about them.

Saw one of the Grid machines at VCF West a few weeks ago. The screen was eye-catching; a vivid red with no perceptible flicker. Looked great (though monochrome) even by today’s standards.

Works on the same principle of passing a current through a substance to emit radiation, it's just the electroluminescent panels use a solid material, so I think they're able to be flatter.