Enlarge / Samsung's 2022 The Frame is one of the edge-lit TVs that RTINGs tested. (credit: Samsung) Thin LCD-LED TVs are appealing because they're easy to find space for and are aesthetically pleasing. To stay slim, most thin TVs, like Samsung's The Frame pictured above, use edge-lit backlights. But beyond the image quality limitations of these designs, new testing from RTINGs suggests that there are inherent flaws in edge-lit TV designs that hurt durability. Review site RTINGs has been running extreme tests on dozens of TVs and a few monitors that are meant to simulate years of use.