What is VIZIO? a 'Radio Shack'? a Network? a Broadcaster?

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I might've mentioned the smart-TV I got for my birthday, but I didn't mention 'VIZIO' (at least not in the tags on any of the discussions). Why not? Mostly because they don't mention themselves! (commendable, as it gives them more energy to focus on ... whatever it is they do ...) As far as I know (i.e. before I actually try to find anything out), they just 'host streaming-services that are offered to us (and keep us connected to the ones we subscribe-to)' (and of course 'build the televisions that we watch on'). Do you know any different?