RE: Cad-free QD26 Mar 2022 08:00
As far as I'm aware, just a business/marketing decision from Samsung. Maybe they thought the regulations would come in sooner than they have or they just thought it would be a good marketing tool to have TVs without the heavy metal element.
They state on their website:
"Many previously developed quantum dot solutions were based on materials that involve cadmium, such as cadmium sulfide (CdS) or selenide (CdSe). Although these quantum dots share the same advantages as written above, they hold a deadly threat against the environment as toxic Cd2+ ions may be released through nanoparticle degradation.
Samsung’s quantum dots, however, are cadmium-free. They’re based on indium (In) instead. After much research and development, Samsung is currently the only company that produces cadmium-free quantum dot displays. Samsung started focusing on quantum dot technology in 2001, and has since registered over 150 patents on the subject."