https://phys.org/news/2019-11-samsung-efficient-quantum-dots-heavy.html This is an important milestone in the development of quantum dot displays, which are theoretically about as good as it gets and as cheap to manufacture as possible. LEDs can be incredibly efficient, but making them so tiny has proven to involve more quantum mechanics than anyone knew. Quantum dots are tiny pieces of metal usually, that they might put on top of a silicon chip, but everyone was surprised when they first did that and discovered how far apart the dots are determines how reliable they are. Its as if they don't like to perform in a crowd, and Samsung has treated these similar to a transistor by coating them with some sort of insulator so they behave better when crowded. Anyway, making them produce a great picture without using toxic heavy metals is the trick and, in the long run, the technology might even be applied to reel to reel printing and self-assembly. Basically, in twenty years, you should be able to buy a 4k television at Walmart the way you buy a poster, and tape it to your wall. You could get maybe 4,000 nits of brightness out of it, with 5,000 being daylight and 7,000 being dazzling, while your average display today is lucky if it can manage 1,000. Their efficiency, longevity, and low cost means you could use your TV for a light as well.
