OLED or QLED TV? Know the differences between the technologies used in the screens

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More expensive televisions have features that improve contrast, color and brightness of the images shown – and this makes a difference when watching movies and series. Shopping Guide: OLED and QLED TVs Ighor Jesus/g1 Watching TV occasionally leads us into strange situations: the scenes are too dark and you can’t see anything, just a blur with very low contrast. Anyone who is a fan of “Game of Thrones” knows how it is. The problem has to do with the technologies used in television panels, which control brightness, contrast, color and improve image quality. Cheaper models with LCD technology do not have a more refined control of these functions, so the image can be blurred or even gray, without contrast. 📺 TVs with QLED and OLED panels promise to solve this with a more refined image adjustment – QLEDs use an additional filter between the screen and the rear panel, called “quantum dots”. OLED screens, on the other hand, have a panel of dots that light up individually, allowing greater control of the contrast in the image. The Shopping Guide separated 9 televisions from 42 to 75 inches with OLED and QLED technology with 4K resolution and talked to experts to show the differences between these types of screens and what their benefits are. The prices of the products in the stores consulted at the end of August ranged from R$ 3,100 to R$ 11,000. Some QLED models, for comparison, may cost R$300 or R$400 more than a more “basic” TV with LED. See the list below and, at the end of the article, understand the differences between the technologies. OLED TVs LG OLED B3 LG OLED C3 Samsung S90C 55″ Samsung S90C 65″ 4K TV: understand the other technologies used in screens QLED TVs Samsung Q60C Samsung Q70C TCL Q635 TCL Q835 Philco PTV65G3BGTSSBL Understand the differences between the two technologies 📺 QLED WHAT IT IS : These are TVs with an LED panel covered with a filter formed by small pixels of semiconductor material that absorb light and emit specific colors. These screens are also known as “quantum dot” TVs. In this way, the colors become more saturated and bright. Contrast on QLED screens is also better, with dark colors demonstrated with greater depth and sharper details in images. “The resolution is given by the number of dots on the liquid crystal display. The QLED filter allows a better alignment of the light coming from the rear panel and provides an increase in color reproduction, contrast and details”, explains Nikolas Corbacho, product manager at TCL Semp. Alexandre Gleb, Samsung’s TV product manager, adds that the quantum dots help “amplify the brightness” of the image. See below how the layers of a QLED screen are organized: Infographic shows what QLED technology looks like in TVs. Anderson Cattai/Arte G1 QLED televisions are also called by manufacturers Quantum Dot or “quantum dots”. Some manufacturers offer QLED models in conjunction with other technologies such as Micro LED (see what it is). ⬆️ PROS: Greater backlight control compared to LED televisions, more accurate colors, more brightness and contrast. ⬇️ CONS: Contrast level and viewing angle smaller than OLED. The price will be slightly higher than a conventional LED TV. 💰 HOW MUCH IT COST: 50″ QLED models were sold for around BRL 3,100 in the online stores consulted in August. The main manufacturers of QLED screens are LG, Samsung, TCL and Philco. 📺 OLED WHAT IT IS: It is the acronym for organic light emitting diodes, which produce sharper images, with greater accuracy in color reproduction and with greater contrast compared to LED televisions. The technology also allows each point of the screen to be controlled individually. dark scene with a person in the center, only the necessary points light up, leaving the others off, for example. “As the panels do not have backlighting, the generated image can reach true black tones, without light leakage”, comments Igor Krauniski, senior manager of TVs at LG. “In scenes with low contrast, the OLED screen can adjust the image to a level that even looks like the pixel is off, but it is on”, says the executive. “OLED is known for perfect contrast”, completes Gelb, from Samsung. See below how the layers of an OLED screen are organized: Understand the OLED technology of Anderson Cattai/G1 TV screens Because they emit light themselves, OLED TVs do not require an extra layer of backlighting like LED panels. This leads to models with thinner thicknesses – but which are much more expensive compared to QLED televisions. OLED TVs can have their differentials among the brands available in stores. Samsung offers a quantum dot filter next to the panel – similar to the one used in QLED screens to increase screen brightness. ⬆️ PROS: Every pixel is a point of light, best available contrast, great viewing angle. ⬇️ CONS: Less glare than competitors, TV life may be shorter, price higher than other screen technologies – can reach twice as much as QLED, for example. There is a risk of burn-in, which is images that can stick to the screen – LG says this is something that can happen with any TV technology. Samsung and LG say they use automatic features on televisions to prevent burn-in from happening on OLED screens. 💰 HOW MUCH IT COST: 42″ OLED TVs were sold for around BRL 6,500 in internet stores in August. The main manufacturers of OLED screens are LG and Samsung. This report was produced with complete editorial independence by our team of journalists and collaborators If the reader chooses to purchase a product from the links provided, Globo will be able to earn revenue through commercial partnerships. Questions or complaints regarding the product purchased and/or the purchase, payment and delivery process should be directed directly to the responsible retailer.

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