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Home / Technology / Samsung OLED TV based on quantum dots can be broadcast in 2022, the report states

Samsung OLED TV based on quantum dots can be broadcast in 2022, the report states



samsung-qled

Samsung’s 2021 Neo QLED TVs are packed with some fancy enhancements, but they are still based on LCD technology.

Samsung

Right now, there are two TV technologies available to most people: LCD and OLED. That people with a lot of money can get one MicroLED TV, but only mortals have only two choices. The largest TV manufacturer in the world, Samsung, has been stuck in the LCD camp for many years, while city competitor LG is the biggest name in OLED. LCD has its strengths, but has always done so hangs by OLED in total image quality.

Samsung is now working on a new type of TV that aims to combine two screen technologies into something larger than the sum of its parts. It is an OLED / quantum dot hybrid. According to Korea IT News, Samsung Display will end production of LCD panels by the end of 2021, and move to QD-OLED next year. At the same time, Samsung Electronics could start selling these new TVs as early as 2022.

Here’s what we know so far:

Samsung’s $ 11 billion is focused on quantum dots

samsung-qd-oled

I’m sure the little pallet jack doesn’t lift that box.

Samsung

Samsung has been selling LCD TVs enhanced by quantum dots in recent years during its QLED brand. In our tests, Samsung has QLED TVs does not match the overall image quality of the OLEDhowever, mainly due to OLED’s incredible contrast and off-angle performance. In October 2019, Samsung Display announced that they were building a factory to make TVs that combined these technologies:

Samsung Display will invest 13.1 trillion won by 2025 to build “Q1 Line”, the world’s first mass production line for QD display on the Asan Campus. The new line is scheduled to begin production in 2021 with an initial 30,000 sheets (8.5 generations) and will produce a huge QD screen of 65 inches or larger.

It is an investment of around $ 11.1 billion. While the company calls this “QD screen”, it is not electroluminescent, also known as “direct view” quantum dots. That technology is still several years away. This is going to be a QD-OLED hybrid.

At the announcement, South Korean President Moon Jae-in also referred to Samsung’s rival LG regarding Korea’s place in world TV production: “It is important to maintain the top position in the global display market with game-changing technologies,” said Moon. “After LG Display’s 3 trillion won investment in large OLED panel production in July, Samsung Display’s latest investment plan further illuminates the outlook.”

One thing you may have noticed is that Samsung calls this “QD screen”, which can be confusing, since these are not quantum dots with direct display (more on these later). Since LG has spent years being the only name in town (figuratively and literally) for OLED, it is unlikely that Samsung will call any version of this technology OLED. We will probably have to wait until CES 2022 to find out.


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How QD-OLED would work

samsung-qd-oled

A simplified diagram of how a QD-OLED hybrid would work. A blue OLED material would create all the blue light, plus the light energy that red and green quantum dots would use to create red and green light.

Samsung

So how will it work? Nanosys, a company that makes quantum dots, has shared some details. CEO Jason Hartlove is understandably bullish on the technology, which relies on converting light from an OLED panel:

“Quantum Dot Color Conversion is a whole new way to render color on screens,” he told CNET. “The result is pure quantum dot color with much higher efficiency as no light is lost in a color filter.”

Combining quantum dots and OLED adds to the strength of both technologies. The idea of ​​any TV is to create red, green and blue lights. LED LCD screens with quantum dots, such as Samsung’s current QLED TVs, use blue LEDs and a layer of quantum dots to convert some of the blue to red and green. With the current version of OLED, yellow and blue OLED materials create “white” light. In both cases, color filters only allow the color to be needed for the specific sub-pixel.

The idea of ​​a QD OLED is to simplify these designs into one, using OLED to create blue light, and then a quantum dot layer to convert some of the blue to red and green.

qdcc-oled

How Nanosys envisages QD-OLED working. Samsung’s version will probably be similar. A blue OLED layer creates blue light, which passes through a quantum dot color conversion (“QDCC”) layer that converts some of the blue to red and green. Thanks to how quantum dots work, this is significantly more efficient than using color filters.

Nanosys

There are theoretically many advantages to this method. By using only one color or material from OLED, the production costs go down completely since it is easier to build. For example, LG uses only two OLED materials, blue and yellow, for each pixel across the screen. Light-blocking color filters create green and red. QDs have almost 100% efficiency, significantly better than filters, so in theory the hybrid TVs will be much brighter. In addition, there is the possibility of even wider color spectrum at all brightness levels.

qd-oled

On the left, the current version of OLED. “White” in LG’s case is a combination of blue and yellow OLED materials. On the right, how QD-OLED is likely to work, just using blue OLED, and then converting some of it with red and green quantum dots.

Nanosys

Because every pixel can be turned off, these hybrid TVs will also have the incredible contrast ratio as OLED is known for.

Since blue OLED materials still age faster than red and green, this means that the TV ages more evenly without changing the color of having the entire panel one color. Keeping aging to a minimum, and thus having a TV that does not seem weak after a few years, is one of the most important production problems. This is especially true in this HDR era with extreme brightness levels.

nanosys-dic-ink-jet-printing-qdcc-sid-2018-closeup-of-qd-pixels.png

A very, very close-up of a QDCC team. Behind this can be either blue LEDs or blue OLED. Regardless, the color that comes out is red, green and blue.

Nanosys

While this new Samsung system focuses on TV sizes, the technology can also work in phone sizes. Since Samsung does not seem to have any problems making excellent small OLEDs, I would be surprised if it is in a hurry to disrupt the market with something as advanced as this. In addition, Samsung’s phone size OLEDs use red, green and blue OLEDs compared to LG’s blue-yellow. Samsung tried to make RGB OLED TVs and just could not make them profitable. What is more likely, and mentioned in recent rumors, is that they will use this technology to build 8K ultra-high resolution computer monitors along with larger TV monitors.

As mentioned earlier, it is clear that Samsung strongly believes in this technology, since it is ending the production of LCD monitors in the factories in Korea. This does not mean that it does not start selling from next year some LCD screens. Samsung is a massive company, and that part of the company it makes LCD monitors, Samsung Display, stop production. The part of the company that seller TVs, Samsung Electronics, has not made any such announcement. In fact, part of the recent delay was that Samsung Electronics needed LCD panels before they were ready to start selling QD-OLED panels. They have worked on it in 2021, and probably in the future they will get their LCD panels from a third party.

Into the future

QD-OLED appears to be just around the corner. But what about even longer future screen technology? Well, the quantum dot people seem to be thinking Direct display of quantum dots is only a few years free. These electroluminescent quantum dots, or ELQD, will have all the benefits of OLED, all the benefits of QD and none of the problems with LCD or the worries of wear and longevity of OLED. A very promising technology.

The other new TV technology that is already coming to market, regardless of the extreme high-end of the market, is MicroLED. It has many of the same benefits as QD-OLED hybrid, but does not nut with the irritating organic substances. Affordable versions of it are still some distance away. Oh, and MicroLED also uses quantum dots. They are a fascinating technology with uses far beyond TV screens.

In the meantime, we have it mini-LED, which is pretty cool too and far cheaper than some of these.


In addition to covering television and other display technology, Geoff makes photo tours of cool museums and places around the world, including nuclear submarines, massive aircraft carrier, medieval castle, fly cemeteries and more.

You can follow his exploits on Instagram and YouTube, and on his travel blog, BaldNomad. He also wrote a best-selling sci-fi novel about city-sized submarines, along with a sequel.




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