I have the E series of that OLED tv....it's awesome and worth every penny. QLED sounds like OLED but it's not, it's a marketing scam. OLED pixels give off light individually, they're not backlit like LED tvs.
https://www.techradar.com/news/the-e9-oled-was-one-of-lgs-best-tvs-so-where-did-it-go