OLED and QLED TV; getting the best choice for yourself
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- 28 Sep, 2021
Television is the main attraction of your home's entertainment center, bringing life to your living room or bedroom as the case may be. The television gives an avenue to gather with friends or family to watch the news, sports, a favorite television series, or blockbuster movie. For all of this and more you are going to want a TV with optimum sound and picture quality.
Today, most TVs are smart, this means that they are WiFi connected and have built-in apps like Netflix and YouTube. The world is slowly progressing to the use of the latest technology of Smart Televisions. These TVs have become quite popular with their ability to provide an excellent source of entertainment.
With the current advancing technologies and mind-blowing innovations, it is without a doubt that the Television has evolved: from the monochrome to the colored TVs; from the CRT models to the flat screens. In 2021, the high-end TV landscape is just as confusing to new buyers as ever.
There's a bunch of new televisions to consider and plenty of technical-sounding features like 8K, HDR, Ultra HD 4K, 120Hz, HDMI 2.1. and so on. Most modern TVs use LED displays to act as a source of light behind the screen and use an LCD to control where light is shown on your TV. Today, premiums TVs use two differing technologies to enhance your viewing experience: QLED and OLED.
Samsung makes QLED televisions and LG makes OLED televisions, but the differences don't end there. There is still so much to know between them. There are some other brands beyond LG and Samsung that sell OLED and QLED TVs respectively. Some of these brands are Sony, Vizio and TCL. Let's begin with a quick break down of these display types
QLED stands for "quantum dot light emitting diode." It is a variation of LED LCD that is gotten by adding a quantum dot film to the LCD "sandwich." QLED, like LCD, is "transmissive" in its current form and relies on an LED backlight.
OLED on the other hand stands for "organic light emitting diode." It is a fundamentally different technology from LCD, the major type of TV. OLED is "emissive," meaning the pixels emit their own light.
Now to go into more details, keep reading to learn more about these two technologies.
Like I said earlier, QLED is a category name for TVs that uses a technology called a quantum dot. QLED TVs are LCD TVs that use quantum dot film layer technology combined with a special LED backlight system designed to display a brighter picture. Depending on the LED backlight used, QLED TVs can be designed to be relatively slim in depth.
In simple English, this means that a QLED TV is just like a regular LED TV, except it uses tiny nanoparticles called quantum dots to super-charge its brightness and color. The technology was introduced by Sony in 2013, but shortly after that, Samsung began selling its QLED TVs and established a licensing partnership with other manufacturers, which is why you’ll also now find QLED TVs from Sony, Vizio, Hisense, and TCL.
QLED TVs take advantage of the many unique characteristics that Quantum dots offer such as "high luminance" i.e. how bright a screen looks. This unique QLED technology, along with other black implementation technologies such as Direct Full Array, provides a completely different picture quality and a more realistic viewing experience compared to non-QLED TVs.
Generally offered in larger screen sizes because they are more expensive than standard LCD TVs, QLED TVs are popular for placement in very bright rooms especially with ambient sunlight levels.
What then are these Quantum dots? They are microscopic molecules that, when hit by light, emit their own differently colored light. In QLED TVs, the dots are contained in a film, and the light that hits them is provided by an LED backlight. That light then travels through a few other layers inside the TV, including a liquid crystal (LCD) layer, to create the picture.
One amazing facts is that QLED TVs are worth buying if you stream movies, games, or shows regularly. If you are looking for a TV with an enhanced brightness display, the layer of quantum dots helps to achieve additional vibrancy compared to a traditional LCD image. A true game or movie lover will be thrilled at the difference that a QLED TV can make to your overall media viewing experience.
The same content can look different depending on which display technology a TV has. OLED TVs have self-lit pixels that turn on and off to achieve perfect black and infinite contrast. Self-lit pixels don't have a problem with light bleeds or halos, unlike LED TVs that can't create perfect black and can also suffer from the halo effect. With OLED TVs you get perfect black and better image quality.
OLED TV technology represents one of the most advanced panel technologies in the market. Quite different than LCD and QLED TVs, OLED panel technology does not use backlighting systems that adds to the panel thickness. Instead, light is produced by millions of individual OLED sub-pixels. The pixels themselves (tiny dots that compose the image) emit light, which is why it's called an "emissive" display technology.
That difference leads to all kinds of picture quality effects, some of which favor LCD (and QLED), but most of which benefit OLED. Because OLED panels feature self-illuminating individual pixels, this singular advantage is why it can produce a perfectly black screen without a hint of light bleeding.
Unlike a QLED or LED TV that must dim its backlight and block what remains for dark scenes, an OLED TV simply turns off the pixel. When the pixel is off, it emits no light and no color, making it as dark as when the TV itself is turned off. These self-lit pixels can show the tiniest star in the darkest sky with absolute precision and clarity.
The lightning fast switching speed and the light generated at the pixel level produces a very natural looking image with outstanding off angle viewing clarity. Rich with deep colors, nearly infinite contrast, and bright color highlights that appear more natural and life-like make OLED TVs perfect for all types of content including fast action movies, games, and sports.
Self-lit pixel technology allows OLED TVs to be ultra-slim with perfect picture quality. By contrast, LED and Mini LED TVs use backlights combined with numerous other display layers, which affect both screen thickness and picture quality. It doesn't matter how many backlights are used or how small they are, LED still can't compete with OLED.
Now, for better clarity I would be doing a side by side comparison of these two TV technologies based on some important criteria. The more you know the better your choice.
OLED and QLED TVs.
- Black levels and Contrast.
Contrast is the difference between the darkest part of an image and the brightest part. If a TV can deliver a truly black dark portion, it doesn’t have to make the bright parts quite as bright to achieve good levels of contrast. Also, black purity refers to the ability of the display to produce deeper black, which determines whether the TV could achieve excellent quality of images.
Deeper blacks provide higher contrast, richer colors, etc., resulting in more realistic and colorful pictures. In terms of black purity, OLED superiority to QLED seems undisputed. When it comes to black levels, OLED reigns as the undisputed champion. This is because of its ability to go completely black when it needs to.
For now, OLED comes out on top. If a pixel isn’t getting electricity, it doesn’t produce any light and therefore stays totally black. QLED however works with the backlighting system, so it is virtually impossible to completely eliminate light leakage which results in a glowing grey called "elevated black". This is a problem we see on even the best QLED sets.
However, OLED TVs are not affected by these issues. If an OLED pixel is not powered, it will not emit any light, so its color is pure black. Is this problem noticeable on the QLED screens? Definitely. If you are watching an intense action movie and two characters are running through a parking lot at night, for example, you may notice a slight glow on parts of the scene that are supposed to be pitch black.
However, mini-LED backlights are one way QLED TV makers are trying to improve this situation and they are getting there. For this round however, I would say that OLED TVs wins hands down.
QLED TVs have a considerable advantage when it comes to brightness. Because they use separate backlights instead of relying on each pixel to create its own light like for OLED TVs. These LED backlights can be made incredibly, achingly bright. By adding a quantum dot’s ability to maximize that light, producing brighter hues in the color spectrum without losing saturation you get yourself a display that is more than bright enough to be seen clearly in even the most brightly lit rooms.
OLED panels have become brighter over the years, but they still can’t match QLED TVs. QLED TVs have considerable advantages in terms of brightness. Like it was mentioned earlier this is mainly because quantum dots can reach brighter tones in the spectrum without losing saturation, which is especially important in rooms with a lot of ambient light.
OLED panels can’t compete on a pure brightness basis. Their light-emitting individual pixels simply can’t produce the same amount of light. In a darkened room, this isn’t a problem. In fact, we would argue it is preferable because OLED can achieve the same contrast with less brightness, making dark-room viewing a less retina-searing experience.
However, in well-lit environments, or where lots of daylight streams in through windows, QLED TVs are more visible. QLED TVs are considered more suitable for viewing HDR content because the spectral highlights in the image are brighter and more prominent, such as the light reflected by lake or car paint.
However, there is some controversy at this point; some people think that the pure black of the OLED display is better for HDR content. That being said, the winner of this round goes to QLED TVs.
- Viewing angles.
With QLED screens, the best viewing angle is dead center. The picture quality diminishes in brightness, color, and contrast as you move further from side to side, or up and down. While the severity differs between models, it is always noticeable despite TV makers’ best efforts to eliminate the issue. On the other hand, OLED screens can be viewed with no luminance degradation even at drastic viewing angles — up to 84 degrees.
Some QLED TVs have improved in terms of viewing angle, with anti-reflective layers helping, but OLED maintains a clear advantage. So if you like to arrange family screenings for your favorite movies, and want to make sure there isn’t a bad seat in the house, an OLED TV is best for you.
OLEDs have come a long way. When the tech was still on the rise, OLED screens maxed out at 55 inches. Today, screen sizes as large as 88 inches are possible, but only at great expense that puts it out of reach for almost everyone. QLED technology on the other hand is easier and less expensive to produce at larger sizes.
Samsung’s 85-inch Q900TS 8K QLED TV cost close to 4 million naira while its largest consumer model currently measures 98 inches. QLED TVs can come in larger sizes at lesser prices in comparison to OLED TV. So in terms of size, QLED TVs should be a great choice.
LG says you would have to watch its OLED TVs five hours per day for 54 years before they fell to 50% brightness. Whether that’s true remains to be seen, as OLED TVs have only been out in the wild since 2013. QLED is even newer, but its source of backlighting (LED) has a long and proven track record. For that reason and that reason only, I will award this category to QLED.
- Screen burn in.
Both QLED and OLED TVs can occasionally exhibit something called image retention. Screen burn in is when a TV temporarily continues to display part of an image after the original image has disappeared. It usually presents itself as a kind of shadow. Image retention typically goes away on its own once you switch to some other kind of content that doesn’t show the problematic on-screen elements.
When image retention does occur, it is usually the result of having the same visual element on-screen for long periods of time. Network logos in the corner of the screen have been known to cause it, as can video games that present the same interface elements throughout game play. Because of their self-emissive nature, OLED TVs are susceptible to the much rarer permanent version of image retention, which is known as “burn-in.”
Burn-in is caused when one or more OLED pixels have their normal brightness permanently diminished to a lower state. The only fix for this is to lower all of the rest of the pixels to the same state, but that’s hardly a good solution. For an absolute guarantee that you won’t experience burn-in, your best bet is QLED TV.
- Power consumption.
As you are now very much aware, OLED panels don’t require a super-bright backlight. Those backlights consume a fair amount of power, which means OLED TVs are inherently more energy-efficient. They also emit less heat than QLED TVs.
It is a good thing that today OLED TVs have come down in cost else the winner would have been QLED without a doubt. If you are shopping around and see QLED TVs that are quite affordable keep in mind that, unlike OLED TV, there is a big range in picture quality with QLED TVs because there are far more variables in their design, picture processing, and build.
Only the very top-of-the-line QLED TVs are equivalent to OLED in picture quality. So in terms of price, it depends on what you want. If you are looking at premium quality products that the price difference between the two isn't so significant.
These are just some of the basic factors to consider before choosing which TV technology to go for. Knowing that you would be spending a lot of time watching the TV, it only makes sense that you would spend a few choosing the perfect one.
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Considering the number of TVs that there are to choose from, knowing all about OLED and QLED TVs will help you to decide which one is the type of TV that is worth buying. Ready to start choosing? Go to Zit Electronics Online Store for the latest TV collection at affordable prices.