So where does this stand in 'backlit' or 'self emmission' panels?

"TV Displays Explained at the Fundamental Level" https://www.youtube.com/watch?v=WhFwPAfwdLo

If you’d read the article, you’d learned that these are advancements in backlit LCD technology. More generally, however, having more than three color primaries is orthogonal to the question of backlit vs. self-emissive.