Lenovo were the OEMs for IBM's Thinkpads. LG still makes monitors for Dell, hard drives that are rebadged and I'm not sure of what else (they are a huge conglomerate)
LG was never an ODM (sic). And they don't manufacture hard drives. Sure, they manufacture displays but so do Sharp and Philips. Also, I was under the impression that Lenovo merely acquired IBM's PC business. All the other companies are ODMs though.
Lenovo had been the manufacturer for the PC business for some years before they bought it entirely.
I don't think the comment you're replying to claims that LG was the only manufacturer of displays, just that it has manufactured displays badged with other brands (and perhaps still does) and recently started selling them under its own name (perhaps as well, rather than instead).
