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Samsung OLED TVs with quantum dots are expected to challenge LG next year



Samsung qled

Samsung’s 2021 Neo QLED TV has some novel features, but is still based on LCD technology.

Samsung

Currently, most people can use two TV technologies: LCD screen with you are.Of course, someone with a lot of money might get MicroLED TV, But mortals have only these two choices.Samsung, the world’s largest TV manufacturer Firmly rooted in the LCD camp For many years, and crosstown’s competitors LG is a big name in the OLED field. LCD, although there are such QLED, Mini LED with Double panel, Always Behind OLED Overall image quality.

Now, Samsung is developing a new type of TV that aims to combine the two display technologies to make it larger than the sum.It is OLED and Quantum dots Called QD display. According to Korean IT News, Samsung Display will stop producing LCD panels before the end of 2021 and will move to QD Display next year. At the same time, Samsung Electronics may start selling these new TVs as early as 2022.

So far, this is what we know.

Samsung bets on quantum dots with $11 billion

Samsung qd-oled

I’m sure that the tiny pallet jack can lift boxes without any problems.

Samsung

In the past few years, Samsung has been selling LCD TVs with quantum dot enhancements under the QLED brand, but The last (and only) OLED TV It is a one-time product that stopped selling nearly ten years ago. In October 2019, Samsung Display announced that it would build a factory to produce TVs that combine the following technologies:

Samsung Display will invest 13.1 trillion won by 2025 to build the world’s first large-scale QD display production line “Q1 Line” at the Asan Campus. The new production line is scheduled to start production in 2021, initially producing 30,000 sheets (Gen 8.5), and will produce huge QD displays of 65 inches or larger.

This investment is approximately 11.1 billion US dollars.The company calls it a “QD display”, but it’s not Electroluminescence, also known as “direct observation” quantum dots. This technology will take several years. This will be a QD-OLED hybrid.

In announcing the news, South Korean President Moon Jae-in also mentioned Samsung’s rival LG on South Korea’s position in the world’s TV production: “The important thing is to maintain the top spot in the global display market through game-changing technology. “Following LG Display’s 3 trillion won investment in the production of large-scale OLED panels in July, Samsung Display’s latest investment plan further boosted the outlook.”

One thing you may have noticed is that Samsung refers to it as a “QD display”, which can cause confusion because these are not directly visible quantum dots (more on that later). Since LG has spent years (both graphically and literally) being the only name for OLED, it is unlikely that Samsung will call this technology any version of OLED. We may have to wait until CES 2022 to understand how it will brand new TVs.






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How does QD-OLED work

Samsung qd-oled

Simplified diagram of QD-OLED hybrid working principle. The blue OLED material will produce all the blue light, plus the red and green quantum dots will be used to produce red and green light energy.

Samsung

So how will it work? Nanosys, the company that makes quantum dots, shared some details. Understandably, its CEO Jason Hartlove is optimistic about the technology, which relies on converting the light of the OLED panel:

He told CNET: “Quantum dot color conversion is a new way to present colors in displays.” “The result is that pure quantum dot colors have higher efficiency because there is no loss of light in the color filter.”

The combination of quantum dots and OLED brings out the advantages of the two technologies.Any TV idea is Produces red, green and blue light. LED LCDs with quantum dots, such as Samsung’s current QLED TVs, Use blue LEDs and a layer of quantum dots Convert some blue to red and green. Use the current version of OLED, Yellow and blue OLED materials produce “white” light. In both cases, the color filter only allows the color required by the specific sub-pixel to pass.

The idea of ​​QD-OLED is to generate blue light by using OLED, and then use a quantum dot layer to convert some blue to red and green, simplifying these designs into one.

qdcc-oled

Nanosys envisions how QD-OLED will work. Samsung’s version may be similar. The blue OLED layer produces blue light, which passes through the quantum dot color conversion (“QDCC”) layer, which converts part of the blue into red and green. Due to the working principle of quantum dots, this is much more efficient than using color filters.

Nanosystem

In theory, this method has many advantages. By using OLEDs of only one color or material, the manufacturing cost is reduced because it is easy to manufacture. Taking LG as an example, each pixel of the entire display uses only blue and yellow OLED materials. The light blocking filter creates green and red. The efficiency of QD is close to 100%, which is significantly better than the filter, so in theory, hybrid TV will be brighter.In addition, it is even possible Wide color gamut At all brightness levels.

qd-oled

On the left is the current version of OLED. The “white” in the LG case is a combination of blue and yellow OLED materials. On the right, using only blue OLEDs, and then converting some of them with red and green quantum dots, how QD-OLED might work.

Nanos

Since every pixel can be turned off, these hybrid TVs will also have incredible Contrast OLED is well known.

Since the aging speed of blue OLED materials is still faster than that of red and green, having one color for the entire panel means that the aging of the TV is more uniform and there is no color cast. Keeping aging to a minimum, so that the TV does not look dark in a few years, is one of the key manufacturing issues.Especially in this regard High dynamic range The era of extremely high brightness levels.

nanosys-dic-ink-jet-printed-qdcc-sid-2018-qd-pixels.png

A very, very close-up view of the QDCC layer. Behind it may be blue LED or blue OLED. Either way, the colors coming out are red, green and blue.

Nanos

Although this new Samsung factory focuses on TV-sized displays, the technology can also be used in mobile phone-sized displays. Since Samsung does not seem to have any problems in producing high-quality small OLEDs, I would be surprised if it rushes to disrupt the market with this advanced product. In addition, compared with LG’s blue and yellow, Samsung’s mobile phone size OLED uses red, green and blue OLEDs. Samsung tried to make RGB OLED TVs, but was unable to make it profitable. The latest rumors mentioned that it is more likely that they will use this technology to build ultra-high resolution 8K computer monitors and larger TV screens.

As mentioned earlier, it is clear that Samsung firmly believes in this technology, because Samsung has stopped producing LCDs at its factories in South Korea.This does not mean that it will not be sold starting next year any LCD Monitor. Samsung is a huge company, Make LCD, Samsung Display, is stopping production.Part of the company Sell TV, Samsung Electronics, did not make this announcement. In fact, part of the recent delay is that Samsung Electronics needs LCD panels before it is ready to start selling QD-OLED panels. They have already made efforts for 2021, and are likely to look forward, they will purchase LCD panels from third parties.

To the future

QD-OLED seems to be just around the corner. But what about even the future display technology?Well, the people of quantum dots seem to think It only takes a few years to look directly at the quantum dot display. These electroluminescent quantum dots or ELQDs will have all the advantages of OLED, all the advantages of QD, without LCD problems or OLED wear and life problems. It is indeed a very promising technology.

Another new TV technology that is already on the market is at the highest end of the market anyway. Micro LED. It has the same many advantages as the QD-OLED hybrid battery, but it will not be confused with those annoying organics. The moderately priced version is still some distance away. Oh, MicroLED also uses quantum dots.They are a fascinating and fascinating technology Far beyond the TV screen.

In the meantime, we have Mini LED, It is also cool and cheaper than any one.


In addition to reporting on TV and other display technologies, Geoff also takes photographic tours of cool museums and attractions around the world, including Nuclear submarine, Large aircraft carrier, Medieval castle, Aircraft graveyard And more.

You can follow his actions on Instagram and YouTube and his travel blog BaldNomad. He also wrote a best-selling science fiction novel about city-scale submarines and a sequel.




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