Backlit vs edge lit led panel2/16/2024 I am one of them.When was the last time that you updated your office lights? Are you still stuck in the past with the low buzzing noise from your fluorescent lamp? If it’s been years since you last upgraded your office space, take this as a sign that you should! You’re possibly spending way more on your electrical consumption than you should be because your lighting system is outdated. People understanding electronics are also TV-byers. If this is the way why doesn´t Samsung let us know how this technique works. The picture signal moves forward column by column (similar to the old TV-CRT technique, but in that case we have line by line scanning) and the edge leds are modulated accordingly depending of which part of the picture you want to dimm. I think there must be some scanning technique involved. Dimming means that the backlight is dimmed and how can you dim the edge leds without affecting the whole row. But I don´t understand how local dimming is implemented in the case Edge-LED. Local dimming is easy to understand in the Full-Led case. I have even asked Samsung support.įirst of all I would like to use the names "Full-LED" and "Edge-LED" as names for the two hardware techniques. It seems to be impossible to get information about how it is implemented. I have searched for information about the microdimming technique. that stick out from the wall significantly further than the fattest flat screen.ĭo you know what cost increase is incurred to go from edge-lit to LED back-lit (and then to LED local dimming back-lit)? This seems to be a more likely argument is that edge-lighting keeps costs and therefore MSRP as low as possible. What type of people are in the focus group that values a slightly thinner TV over a noticeably better picture? For me, that fraction of an inch that is saved by edge lighting is immaterial especially when you consider that my TV is hooked up to a cable box, blu ray player, AVR, etc. I can't wrap my head around the notion that these technologies were scaled back because of thinness. Now it seems that both technologies are heavily scaled back in favor of edge-lit TVs. I also recall that when back-lit LED sets and local dimming sets showed up in the market, both technologies were heavily marketed. If you have an A/V question, please send it to memory serves, LED edge-lit was the first to appear, then back-lit, and the local dimming. These sets are typically more expensive than comparably sized LED-edgelit models, but if someone is shopping for an LED-LCD TV, I generally recommend spending the extra dough for local dimming if possible and living with a slightly fatter flat panel. LED-backlit sets that do implement local dimming include the Sharp Elite, Sony HX929, and several Vizio models. However, not all LED-backlit sets implement local dimmingfor example, Sharp's current, non-Elite LED-backlit models and Samsung's 2012 entry-level EH series. (Samsung's 20 models use a form of electronic "local dimming" to increase contrast.) In essence, the LEDs form a low-resolution, black-and-white version of the high-resolution image on the LCD panel, as depicted above. One advantage of backlighting is a feature called local dimming, in which the LEDs behind dark parts of the image are dimmed while those behind bright parts are brightened, greatly increasing perceived contrast. ![]() ![]() However, these sets almost always suffer from uneven illumination in dark scenes, an effect sometimes labeled poor uniformity. The difference is where the LEDs are mountedalong the edges (with a diffuser that bends the light to pass through the LCD panel) or behind the panel.įew companies make LED-LCD TVs with true backlighting, primarily because edgelighting allows the TVs to be thinner, which seems to be what consumers want. Technically, both are "backlighting," since the light passes through the LCD panel from behind. By contrast, LCD TVs that use LED backlighting have an array of LEDs directly behind the LCD screen. I thought it was backlit, but hearing you talk about it made me wonder if I was right.Īll TVs in Samsung's 2011 lineup, including the UN60D7000, use LED edgelighting, with LEDs located along the edges of the screenin this case, the side edges, not the top and bottom. I hear you talk about LED backlighting and edgelighting in LCD TVs, and I can't seem to find which one my Samsung UN60D7000 uses.
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