Both QLED and quantum dots refer to LCD TVs that use quantum dot materials to improve the color gamut range of TVs. In short, it means that this TV has wide color gamut technology and a high color gamut.
But the solution for the wide color gamut is not only one of quantum dots, but also other solutions. So QLED/quantum dots are actually not a new screen technology similar to OLED TVs, but are essentially LCD TVs.