When it comes to pure picture quality, nothing can match the crisp, deep blacks of an OLED TV mounted in a dark showroom. When you put an OLED TV in your living room and it’s dimly lit, you might not be able to see the amazing contrast that an OLED has because of the reflections. In these situations, OLED may not be as good as other types of displays that get brighter. That means that OLED TVs aren’t always better than regular TVs in every way. The technology has its flaws, and it’s always being improved to fix them.
QD-OLED, or Quantum Dot OLED, is the next big thing in the development of OLEDs and is being shown at CES 2022, which is taking place this year. They say new TVs made with this technology will be brighter and more colorful than TVs made with traditional OLED technology. Another exciting thing is that this technology will be used for more than just TVs. It will also be used for PC monitors, which are a first for consumer OLEDs that are big enough to be used on a desk.
It’s a new type of OLED that adds a layer of quantum dots to the display stack. This is a technique that had been used only on LCD panels before (via QLED). These quantum dots are used to make subpixels that are very bright without having to use an organic high-purity light source of the same color, which can be expensive and inefficient. Color filters are another way to do this. OLED TVs have been used until now.
The difference between QD-OLED and older OLEDs, and what are they?
To understand this, we first need to know how OLED TVs have been built in the past. OLED is an umbrella term that can be used to refer to many different types of technologies. But when marketing uses the term “OLED” to describe TVs, they are more often than not talking about W-OLED than they are talking about OLED.
For the last 10 years, LG Display has been the only company that makes the OLED TV screens. A W-OLED display is made up of four subpixels: one red, one green, one blue, and one white. Each pixel is made up of these four subpixels. However, at its core, each subpixel is actually a white subpixel, and colored subpixels are made with a color filter that blocks out parts of the white light spectrum in order to make red, green, or blue subpixels.
In this case, the three colored sub pixels are taking away some of the light that comes from the light source to make them. This makes this pixel structure less efficient, and that’s why there is a fourth white subpixel. The fourth white subpixel doesn’t have a color filter on it, and its goal is to make the screen more efficient and more bright.
It’s very rare for quantum dots to waste very little or no of the original light source when they change it from one color to another. To make each subpixel, QD-OLED starts with a simple blue light source and makes red and green subpixels that are very pure while leaving the blue subpixels the same.
With this method, there is no need for a fourth white subpixel. This means that QD-OLED can use a normal RGB pixel structure. Some current W-OLED TVs have problems because they use extra white subpixels to get more brightness. As the screen gets brighter, the maximum color saturation gets lower, and the color volume gets smaller because the color filters lose their effectiveness at high brightness.
QD-OLED, on the other hand, can keep the color saturation at 100% up to the maximum white level of the screen. In addition, without a fourth subpixel, the RGB subpixels can be made bigger to fill the extra space, which will make them more bright.
Why use blue light?
This is because blue light has the shortest wavelength in the visible light spectrum. This means that it has the most energy. The quantum dot layer can keep the blue light’s higher energy down to red or green light, but the opposite isn’t true. You can’t use low-energy red or green light to make blue light.
Why not just use real red, green, and blue lights?
The main reason is to make the display panel last longer. It’s likely that when you spend a lot of money on a TV, you want it to last a long time. Organic light sources will get weaker over time, and different materials will break down at different rates. When a lot of different light sources are used, like with an OLED that has red, green, and blue emitters, the rate at which each emitter fades over time causes the colors on the screen to change. The whites on a lot of computer screens will change over time. Both W-OLED and QD-OLED are display designs that are meant to lessen this.
If we looked inside a W-OLED panel, we would see that the white subpixels are made up of a lot of different lights. In the beginning, these subpixels had blue LEDs and a yellow phosphor. LG Display then used a mix of blue and red LEDs to make the white subpixels. These different emitters are mixed and sized in a way that makes sure they all decay at about the same rate, which makes the colors stay the same over time.
Besides, what about OLED burn-in?
When you use QD-OLED, all of the subpixels are backed by the same blue light source, which means that there should be very little color shift. The subpixels in QD-OLED may fade faster than W-OLED over time because blue organic materials have shorter lives than red and green organic materials. This could also make QD-OLED more likely to get burn-in, which happens when parts of the screen age more quickly than the rest of the screen. Wait and see how this turns out.
A PenTile subpixel matrix is another important OLED design. This type of subpixel matrix is used in most smartphone displays. W-OLED packs its white subpixels in the same way that it packs its white subpixels: with a mix of red, green, and blue emitters in different numbers and sizes so that they fade more evenly. More specifically, the PenTile design has a lot more small green subpixels because they’re the most efficient. Read also; ASUS ROG is releasing a new line of gaming laptops and accessories. The blue subpixels, on the other hand, are made bigger because they have a shorter lifespan.
QD-OLED is better than W-OLED, right?
Now that we’ve talked about some basic things, we can ask the obvious question:
Will our new QD-OLEDs be better than our old W-OLEDs?
And the most likely answer is: We don’t just repeat what Samsung Display has said in its marketing materials. We find that QD-OLED has a clear advantage in light efficiency over W-OLED, and the standard pixel structure that it allows for more color volume for HDR and high-brightness users. The precision of quantum dots also allows for more saturated colors, which means that the Rec.2020 color gamut is better covered by the screen.
The polarizer layer, which is used to reduce reflections at the cost of blocking some of the display’s own light, isn’t used in QD-OLED. This means that the display doesn’t get as bright. QD-OLED panels have an advantage over regular LCD panels when it comes to handling reflections, Samsung Display tells us. This means that it’s likely to remove the polarizer, which should make the screen brighter. Read more; Razer Blade 2022: Release Date, Price, and Everything Else
In addition, Samsung Display tells us that their quantum dot conversion emits light in all directions, which means that the brightness of its TVs doesn’t get dim when you look at them from an angle. A display company is promoting its QD-OLED as even better than existing W-OLED panels because it has even more uniform viewing angles and can be used in more places.
Then, I want one. Right now, what QD-OLED screen can I buy?
A lot of people are excited about this new technology right now. Samsung, Sony, and Alienware have something to show for it right now. A new 4K QD-OLED TV called the Bravia XR A95K was shown at CES 2022. It will be available in 55″ and 65″ sizes by the end of 2022. Alienware made a first-of-its-kind OLED gaming monitor for PC gamers. I don’t mean a TV that looks like a monitor. This 34-inch ultrawide display was a long-awaited show that finally brought OLED technology to the PC world in a size that people like. QD-OLED will be used on both of these screens, which should give LG Display a run for its money.
What’s most important is that Samsung Display is the first company to use this new technology. This makes the company a major player in the OLED market, along with LG Display. QD-OLED isn’t going to be cheap at first. These new displays are going to be a lot more expensive than W-OLED at first. As soon as the technology gets better, we should see this competition drive OLED prices down all over the place. Eventually, we may also see QD-OLED become cheaper than W-OLED. Because QD-OLED only uses blue organic material, it doesn’t need as many as LG Display has to find for its W-OLED.
Taking a look at the future, the next step for OLED is to get rid of all the organic materials, leaving us with a different kind of LED display. OLED is very limited by the blue organic material that it uses. Making an alternative light source opens the door to a whole new kind of screen. Samsung Display has been working on a new display technology called QNED, which stands for Quantum Nano Emitting Diode. This new technology is out in the open. Quasiquantum dots are still used to make this design, but instead of organic blue materials, QNED uses Gallium Nitride Nanorod LEDs to make the light source. We’ll also have an explanation for that when it comes to fruition, so we can talk about it.
