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LG OLED and Samsung QD-OLED TVs in Brazil: how does each manufacturer deal with burn-in?

Many are still afraid to buy. OLED TV afraid of losing their investment in a few years. With Samsung bringing new QD-OLED technology to the market, consumers now want to know what to expect from OLED and whether screens are actually more resistant to permanent image retention – which basically happens when any organic substrate of an OLED screen wears out. leaving permanent scars on the screen. Famous write in.

So this means that write in it’s still intimidating, but it’s worth noting that the chances of losing your screen this way are much lower now than they were a few years ago. Panels are more efficient by bringing technology and algorithms to prevent the image from being savedwhile delivering greater brightness, more accurate colors and the true and deep blacks that make OLED displays a consumer dream for many people who are looking for the best type of combo panel at a price that “fits in their pocket”.

OLED vs. QD-OLED on write in

Tom Parsons, editor What a Hi*Fi A site known for its in-depth TV reviews, recently published an article about LG’s evolution in terms of peak brightness. OLED-Evo G3, the model launched earlier in the year in the US. The article was based on an interview with the company itself, and Parsons notes that in the middle of the presentation, LG Display chief executive Sumin Chang stepped onto the stage. For those who don’t know, LG Display is a division of LG that makes screens for several brands; such as Sony, Panasonic, HiSense and of course the company itself.

LG chief executive says company’s OLED is less likely to burn out than Samsung’s QD-OLED

Chang then took the opportunity to speak with What a Hi*Fi that LG’s OLED screens suffer much less “picture sticking” (image retention in Portuguese) than Samsung Display’s QD-OLED screens.

In support of this statement, the Executive Director referred to accelerated durability test from website ringi, which we can consider as a site that conducts comprehensive testing of TVs today. In this test, 100 TVs play CNN’s content, which has the logo and information bar at the bottom, for an average of 18 hours a day, seven days a week. over two years. A total of 12,140 hours of testing. That’s why the name of the test has the word “accelerated” because it accelerates the aging of the TV.


Durability tested on 100 TVs connected to CNN in the US. Picture: Playback/RTINGS

And what did the first tests show? that both models Samsung S95B This Sony A95K started showing afterimage after two months of testing, that is, at 1080 hours of content display. Translated to Brazil, it’s like the screen is “smeared” after just over 1,000 hours of watching Globo News or CNN Brasil, which have the same static bars at the bottom of the screen.


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Effect examples write in in OLED screens, where parts of the panel are “tarnished” due to wear and tear of the organic components that make up the display. Image: Reproduction/Samsung UK

Two models, S95B and A95K, use QD-OLED panels with first generation, released by Samsung last year. Regarding the LG C2 and G2 models that use the “OLED EX” panel, second generation panel OLED Evo, there was no such problem during the same time of testing.

The executive claims two main reasons why the LG panel is more resistant to write in: First, it is the replacement of hydrogen with deuterium, an isotope of hydrogen, which is a much more stable particle. Incidentally, this is one of the TV videos on the Mundo Conectado YouTube channel that everyone should watch to better understand how OLEDs work. Video below:

The second reason why LG screens are perhaps more resistant to write in it is the use of white subpixel. LG uses sub-pixel structure WRGB which contains a white (W) subpixel next to red (R), green (G), and blue (B). According to the company executive, this structure makes the TV panel more durable than traditional RGB without white, such as those used in QD-OLED panels.

It is important to remember that until last year (2022) LG Display has become the only manufacturer of OLED TV screens in the world.. Now a second supplier has emerged: Samsung Display, Samsung’s screen division, which is stealing some of LG Display’s customers.

In short: LG Display doesn’t make TVs, it only makes TV screens. The end product TV manufacturer is LG Electronics, while LG Display sells screens to the brand itself and even to LG Electronics competitors.

That is, these are two completely different and separate business units within the same company. And that’s okay. Samsung, for example, has been making many components for Apple for a long time (including the Bionic chip) and still makes most of the screens for the iPhone.

OLED vs QD-OLED in color and brightness

It is noteworthy that QD-OLED panels appeared in 2022 and already in the first generation increased Sony A95K to be voted the world’s best OLED display. Combining quantum dot technology with OLED – with Sony still using a heatsink in its model – resulted in more intense colors, especially keeping colors more real even in areas. allocate. Meanwhile, LG’s WRGB OLED displays tend to peak in brightness but lose some color information, leaving explosions, for example, crisper and leaning toward white.


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That is, QD-OLED would have advantages in terms of color and brightness, but a disadvantage in terms of write in. Of course, it should be borne in mind that neither the site Rtings thinks your test is perfect. It accelerates screen aging by using it for 18 hours a day with the most static content possible on TV channels that are news sites. This test is far from normal use on TV like What a Hi*Fi ratings in your article.

The struggle between generations of TVs

We’ve come to the second point to consider as this comparison compares the second generation of LG’s panels to the first generation of QD-OLEDs, which were models introduced in 2022. However, in 2023 Samsung introduces Second generation QD-OLED, and as we first reported at this year’s CES, it’s come a long way. Watch it in the video below:

Samsung didn’t bring its S95B to Brazil last year, much less Sony brought the A95K as the brand packed up and left Brazil 2 years ago. Thus, even if the first generation of QD-OLED had its own problems, they would not have affected the Brazilian consumer since the products were not available in the national market.

What about the second generation of QD-OLED?

Samsung has already confirmed that TVs S90C This S95C come to Brazil – both with the second generation of the QD-OLED panel. We even recorded a video of the S95C straight from CES. At the time, Guilherme Campos, product manager for TVs at Samsung, limited himself to mentioning that Samsung didn’t enter the OLED segment before because the technology wasn’t mature enough yet.without giving a very direct answer about write in.

Samsung QD OLED

This was announced by Nathan Sheffield, head of the European division of Samsung TV and Audio. What a Hi*Fi what QD-OLED panels this year have increased efficiency. According to him, the brightness levels have increased without the need to push the TV to the extreme in terms of energy, working optimally. Thus, users get the best image quality, which already reduces possible problems. write in.

Thus, Samsung promises greater brightness and greater energy efficiency, which is the key to the durability of the organic material present in OLED screens. The company did not specify how it would achieve this greater efficiency, but Samsung Display mentions material on its website “Super efficient EL OLED“and also at CES where they talked about “Heavy H+ OLED— which probably refers to heavy hydrogen, which is another way to call deuterium. That is the same solution that LG brings to the OLED Evo panels.

2023 is expected to bring brighter panels than we’ve seen so far. Bursts of brightness can reach home 2000 nits and both manufacturers (LG and Samsung) promise the higher energy efficiency needed to complete write in. The only thing left to do is lower prices.

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Source: What HiFi, RTings, Linus Tech Tips, LG Display, Samsung UK.

Source: Mundo Conectado

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