This technology takes advantage of quantum dot, a sort of semiconductor that generates colored lights. So, a layer of Quantum Dots is used to Increase the shade and brightness in the noticeably. They're way a lot better than LED-LCD but concerning top quality, They are really close to OLED screens. https://smart-waterproof-mirror-t04616.thenerdsblog.com/35600820/the-smart-trick-of-smart-waterproof-mirror-tv-for-bathroom-market-that-no-one-is-discussing