Quantum dot technology in Samsung TVs. Light under the crystal. Which TV to choose LED, OLED, or quantum dots
In 2017, Samsung launched a line of its new TVs on the market, the screens of which are made using QLED technology. The abbreviation can be read as Quantum dot () + LED (light emitting diode) = QLED, although, logically, it should still be QDLED, but QLED sounds much nicer, so South Korean marketers decided to leave this particular name option for quantum dot screens.
Many may think that QLED is new development, but in fact this is already the third generation Samsung TVs using quantum dots, because we saw screens made using this technology in the SUHD TV lines of 2015 and 2016. Although, of course, there are many changes in the models that went on sale in 2017.
For example, the Moth Eye filter on Samsung QLED TVs has now been replaced with an ultra-thin film that not only reduces panel reflections, but also helps create darker blacks and helps preserve colors at sharper viewing angles. Where the KS8000 (for example) slowly loses saturation when viewed from more extreme angles, the Samsung Q9 performs much better.
Samsung finally achieved their goal and presented a worthy alternative OLED displays. I have already said in that Samsung at one time refused to invest in the development and improvement of OLED screens, “leaving” this matter to competitors from LG and taking a different path, through the development of LED displays. As a result, after several years, these developments resulted in nothing more than quantum dot screens, which, in fact, are the very LED displays. And yes, again, QLED is positioned as the main competitor to organic OLED displays.
So, to summarize the last four paragraphs, we can say this: QLED is an advanced technology LED screens on quantum dots, models of which were presented in the SUHD line recent years. Thus, Samsung has separated the QLED flagships from the second-tier models, which are now SUHD. And the new name, to be honest, sounds much better and louder than the previous one, to match its main competitor - LG OLED.
How it works
Quantum dot technology involves placing a layer or film of quantum dots in front of a conventional LED backlight. The layer consists of tiny particles, each of which, passing through itself with light from the LED backlight at the output, creates its own light in certain color, depending on the size (from 2 to 10 nanometers) of that very point.
Basically, the size of the particle dictates the wavelength of light it emits, hence the large color palette. According to Samsung, quantum dots provide more than a billion colors.
In the third generation of quantum dot TVs, called QLED, the particles have been improved and now have a new core and shell made of a metal alloy. This upgrade improved both overall color accuracy and color accuracy at higher peak brightness.
It is the ability to create a large color volume with high brightness makes a claim to outperform in the market OLED screens, which do not retain colors well at peak brightness, and the peak brightness in OLED, let's be honest, is much lower than in QLED.
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Maksim 2017-06-15 20:32:53
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Samsung has announced approximate dates for expanding the range of SUHD TV models available in Russia in 2016, as well as recommended prices for them: from 110 thousand to one and a half million rubles. All devices are assembled in Russia - at Samsung factory in the Kaluga region.
Currently in Russia you can already buy individual models TVs Korean manufacturer with displays that use quantum dot technology to improve images, however, some lines are either not yet represented on the Russian market at all, or are not represented in all diagonals.
Quantum dots- What is this?
What are quantum dots? These are semiconductor nanocrystals, several dozen atoms in size, that glow when exposed to current or light. They radiate various colors depending on the size and material from which they are made. The use of quantum dots in LCD displays makes it possible to improve the color rendition and contrast of the image, bringing it closer to OLED screens and eliminating the need for additional white backlight LEDs (in the RGBW scheme) and color filters. Essentially, quantum dots “convert” the blue light from LEDs into other primary colors, thereby forming an image.
It is these luminous a certain color microscopic crystals make possible display on TVs, HDR content - images and videos with a wide dynamic range in which details can be seen in both very dark and very light areas. The 2016 model year Samsung TV displays use environmentally friendly, cadmium-free quantum dot technology. Apparently, the Koreans decided to prefer quantum dots to OLED technology, which makes TVs unaffordably expensive and has a number of disadvantages - limited maximum brightness and problems with gradual burnout of light-emitting elements.
New Samsung TVs 2016
The most available model Samsung's SUHD TV with support for 4K and HDR1000 (provided by quantum dots) is part of the KS7000 line and has a diagonal of 49 inches. Its recommended retail price is 109,990 rubles, and sales will begin in July. This line will also feature TVs with diagonals of 55 and 60 inches.
The KS7500 line offers roughly the same features and picture quality as the KS7000, but its TVs have curved screens. The 49- and 55-inch KS7500 models are already on sale in Russia (the 49-inch costs RUB 119,990), and the older 60-inch model will debut in retail in July.
A month later, in August, Samsung plans to begin sales of the top 75-inch model from the KS8000 series of flat-panel TVs already presented in stores, and at the same time the 78-inch model will also appear in stores curved tv KS9000 series. Finally, the release is planned for the end of summer Russian market top model 88KS9800 with a price tag of 1,499,990 rubles.
All Samsung TVs of the 2016 model year received an elegant (not only front but also back) design, anti-reflective coating Ultra Black and new software that makes the most convenient work with smart applications, including streaming services. In addition, the devices are equipped with a special Samsung One Remote, which allows you to control not only the TV, but also other devices connected to it.
Today we are reviewing newest monitor- A 27-inch beauty with a curved WQHD screen made using QLED technology. The approximate price of the device is about $500. This monitor was presented by the manufacturer at the exhibition and it is not yet officially sold in our area. But a test sample has already arrived at the Root Nation editorial office, thanks to which we can be one of the first to become familiar with the technology of quantum dot displays. And of course, I will now tell you in detail about my impressions of this monitor.
Samsung CH711 - monitor with quantum dot displayDesign, materials, assembly Samsung CH711
First, let's talk about beauty. And she is undoubtedly here. The monitor looks elegant and futuristic, which is quite in keeping with Samsung, which now claims to be the manufacturer of the most advanced, stylish and technologically advanced gadgets. What is encouraging is that this trend does not bypass the company’s monitor segment.
Samsung monitor CH711 with curved QLED panel Samsung CH711 has a frameless design and when turned off, it seems that the display occupies the entire width of the front area. In fact, this is not the case, which becomes clear after turning on the monitor. On the sides and top, the display matrix has a thin black field 5 mm wide. But if there is an image on the screen with a black background around the edges, then the frames completely merge with the image. This effect is achieved thanks to the excellent contrast and deep blacks that the QLED display demonstrates. In any case, there is no massive plastic around the screen - only a neat 12 mm high field with the manufacturer's logo below the screen. The entire remaining area of the front of the monitor is occupied by a directly curved display.
The display matrix is framed at the ends with high-quality plastic gray-silver color, and all other elements ( back panel and stand) are made of white glossy plastic. But the gloss is moderate - not to a mirror shine. In addition, white plastic does not collect fingerprints and dust on it is almost invisible. In principle, the materials are pleasant and overall the monitor looks good.
Monitor style - discreet minimalism with simple forms. White color is universal and fits any interior style. The curvature of the display emphasizes its compliance with modern technological trends. The quality of materials and build of the monitor is excellent, I have no complaints. In general, Samsung CH711, as an interior element, will undoubtedly decorate any home or office.
Samsung CH711 Quantum Dot Display Layout of elements
In this regard, the Samsung CH711 monitor is very unusual. It applies original solution, when all connection interfaces and cables are hidden under removable covers of the case and stand. Thus, the manufacturer achieved complete absence wires hanging behind, which further improved appearance monitor.
Power and video interface cables are branded and included. They too white and quite thin, they go inside the legs of the stand and connect to the connectors located in the recess on the case. This area is covered with a removable plug.
There are relatively few connection ports: only a coaxial power connector and 2 options for connecting to the signal source: HDMI or miniDisplayPort. The monitor's power supply is external, also white. Here's what it looks like in practice:
Samsung CH711 display features
The monitor really shows nice picture. But at first glance, I didn’t notice any particular advantage over IPS. Only over time do you begin to notice the excellent contrast of the picture and excellent natural color rendition. There are also no complaints about the viewing angles - they are maximum.
In addition, we can note the high pixel density of the screen. The 2560x1440 resolution is perfect for a 27-inch QLED panel. Fonts look crisp, as do icons and other small elements that Windows abounds in. Moreover, when using Samsung CH711 you don’t have to change the interface display scale - it’s quite comfortable to work at 100%.
A separate point worth talking about is the curvature of the display. Previously, I did not attach importance to this feature and considered it insignificant when choosing a monitor. But after getting used to the curved screen, images on a regular flat monitor begin to appear convex. This is noticeable on rectangular elements that become oval.
Samsung CH711 performs well in any use model - office and text work, photo and video editing, browsing, watching videos and movies.
Separately, I would like to note the gaming orientation of the monitor. Samsung CH711 can be called gaming monitor, thanks to the low response time of the matrix (4 ms) and support for .
AMD FreeSync eliminates tearing and stuttering in game images by synchronizing the video frame rate generated by the video accelerator with the monitor's refresh rate, and also compensates for low fps in games at 30 fps or less.
But I also discovered some problems with the QLED panel. Perhaps this is due to the fact that I have an early engineering sample on the test and this disadvantage will be eliminated in consumer devices, which will go to points of sale.
The essence of the problem is as follows. On solid dark gray objects, I noticed areas of uneven illumination that created a blotchy effect on the screen. This effect is hardly noticeable and is observed precisely on a dark gray background, but I still saw it.
I don't fully understand what this is connected with. Perhaps individual pixels have different backlight levels. Or is it a memory effect (which is most likely) since it seemed to me that there were afterimages on the border closed window where I worked for a long time before. When moving a window with a dark gray fill to a second monitor ( matrix PLS) this effect was not observed, the color filling was uniform.
Ergonomics and controls
As for adjusting the position of the screen in space, its range is not wide and the possibilities are limited only by tilting the display away from you or towards you.
The monitor has one control element - a multifunction joystick button on the bottom of the display. Using it, you can turn the device on and off, as well as call up the menu and navigate and adjust the monitor. Unfortunately, in my test copy the menu was in Korean, so I wasn’t able to go deeper into the settings. I also couldn’t find a language choice in the menu at random; perhaps the engineering sample simply doesn’t have this option.
Monitor Samsung CH711 - management Next to the button there is blue indicator operation of the monitor, which has three states - on, off, standby mode (blinking).
conclusions
Samsung CH711 is an interesting universal monitor that is suitable for use both at home and in the office. Thanks to its exquisite design, it will decorate any room. Using a curved screen is pleasant and convenient in any scenario, be it office use, graphic editor, multimedia or games.
Overall, I liked the display made using quantum dot technology - the picture quality is excellent. But maybe on at this stage QLED panels still have some shortcomings and require further development and improvement. In addition, the cost of such monitors is still quite high. However, I am confident that Samsung will succeed, because we know how the company knows how to achieve its goals. Hope that as time passes, more and more consumers can enjoy high-quality image on new monitors from this manufacturer.
Do I need to buy a plasma TV? How image transmission technologies have changed. Which one is better? What to choose. LCD, LED, OLED or Quantum dots.
There was a time when, when I came to work, I piled a color tube TV on my desk for repairs. It was of some immense size and weighed almost 70 kg.
Could we then think that after some 10-15 years TVs would be hung on the wall?
Moreover, even these flat screen tvs have undergone many changes. Not only in terms of adding some new functions and capabilities, but also in terms of fundamentally new technologies for image reproduction.
Quick navigation through the article
TVs Plasma, LCD, LCD, LED
In this post I want to talk a little about modern TVs, more precisely about their screens or as they are now called matrix, display, panel.
No, I’m not going to burden you with a complex description of the technologies and processes for obtaining images; to be honest, I myself don’t understand much of this.
You know, like in one old joke “I still don’t know why planes fly and don’t flap their wings”
But I understand the difference between them - Plasma, LCD, LED, OLED and SUHD - quantum dot display. And I want to share this with you. So that if you come to the store, on the one hand you don’t get into a stupid situation, but on the other hand you have an idea of what you want to buy.
Why am I talking about a stupid situation?
The fact is that, due to my specialty, people periodically come to me with the question “I want to buy plasma, what kind do you recommend?” - Guys! We're late! Plasma is no longer produced; this technology has exhausted itself and is a thing of the past.
I don’t know if I just like the word - PLASMA - cool! And because of this, everything that is flat is plasma!
But still, a plasma TV is a plasma TV, and an LCD is an LCD. These are completely different technologies.
And if you are still reading this page, then you are probably wondering what the difference is. Let's try to talk about something simple.
Plasma TV PDP
I'm sure any of you have seen or use fluorescent lamps. What glows in the lamp? Inside the lamp there is an inert gas, which, under the influence high voltage turns into a plasma state.
It glows; coating the lamp bulb with a phosphor only gives this light energy a spectrum acceptable to the human eye.
Now imagine millions fluorescent lamps, tiny cones coated with phosphor and placed between two glasses. This is the plasma TV panel.
Under the influence of high voltage, the gas in the cones begins to glow, but they do not all glow at once. Otherwise it would just be a plasma lamp. They glow so that the segments illuminated with the desired color form an image.
And all this is controlled by electronic filling. This is roughly how a plasma panel works.
Among the advantages: Another level of image quality, the ability to make large diagonal screens, and finally a seemingly impossible dream begins to come true, the TV becomes flat.
Disadvantages: The need to use high voltage, which led to high power consumption and heating. And besides, this high-voltage module was the weak link, since it most often failed.
From the point of view of engineers, it was already difficult to squeeze out new levels of brightness and other parameters incomprehensible to the common man from plasma.
Due to the emergence of new, more promising technologies, gradually, manufacturers from plasma panels refused. Before modern format digital broadcasting They also didn’t make it to DVB-T2.
But according to rumors, small quantity Still, there were some, and someone managed to snatch the plasma from DVB-T2.
LCD TVs - liquid crystal, also known as LCD, LED
How does the LCD panel work?
While plasma screens glow on their own, LCD screens require backlighting.
The light source is located in the background, behind the liquid crystal matrix. This light passes through a matrix with liquid crystals and hits a thin curtain of light filters.
It consists of many segments of red, green and blue elements.
All these elements are very miniature. If you take a good magnifying glass and look closely at the monitor screen, you will see these well-ordered segments of blue, red and Green colour. Something like the one in the photo below.
But this photo is greatly enlarged, and the dark spot is a pixel that has stopped glowing, dead pixel. Three segments make up a pixel.
The role of a matrix with liquid crystals is that the crystals work like blinds; they transmit light or block it. This means that some segments glow, while others do not, thus forming an image.
What is the difference between LCD and LED panels?
LCD/LED are still the same liquid crystal panels. The only difference is in the light source, which should evenly illuminate the LCD matrix itself from the inside.
LCD TVs use thin fluorescent lamps, as thick as a cotton swab, for backlighting.
Imagine a TV with thin lamps installed behind the LCD panel daylight. Since these lamps are ignited by high voltage, a high voltage unit is again required, which has often been the cause of malfunction.
IN LED panels instead of fluorescent lamps, miniature, very bright LEDs. They do not need a high-voltage unit, therefore they are much more economical and reliable.
Moreover for LED backlight much less space is needed, this has made LED TVs thinner.
So if LCD TV has a thickness of about 12 cm, then the LED is about 3 cm. The difference is noticeable!
How technology influences the development of LCD TVs
IN this moment backlit panels using lamps, like their predecessors, plasma panels are becoming a thing of the past.
Manufacturers have focused on improving LED backlit panels.
Improvements consist of additional functionality in the form of various “goodies” and the introduction of technologies that improve image quality.
These are various systems for improving the signal, black and white balance, contrast, anti-glare systems and more.
And of course, manufacturers are working on the quality (coolness) of the matrix.
This is how TVs with SMART, 3D, HD TV, Full HD TV, UHD TV (ultra) 4K technologies appeared.
These are all LCD TVs, supplemented with various bells and whistles and technologies and differing in the class of matrix.
The higher the pixel density the matrix contains, the higher quality the picture will be. Actually, in pixels it is measured like this - HD 720 P, FULL HD 1080 P, 4K UHD 2160 P.
Therefore, when choosing a TV, pay attention to the class of the matrix.
How does the TV signal source affect image quality?
The quality with which you will watch programs on your TV depends not only on the capabilities of the TV.
The signal itself that the TV converts into a picture is also important.
For example, users of the first LCD TVs and even more so budget options, you could get disappointed when you bring the purchased TV home.
In the store he gave great picture, and at home... The old CRT TV shows it better. Why?
Yes, because in the store it was connected to some kind of DVD (this is actually simple version) and received a good, high-quality signal.
And at home they stuck an antenna into it, which barely pulls, and even an analog one television signal in which the picture consists of 625 lines and they need to be stretched to a large diagonal. What quality is there?
Of course, over time, the technologies introduced into LCD TVs have corrected this matter somewhat. But
In general, you should understand the following.
If your TV is capable of supporting Full HD, then you will be able to watch a picture in this format if the signal is of Full HD quality.
Of course, now there are more opportunities to receive a high-quality digital television signal. One of the options .
It would seem that we could stop there, but there are no limits to perfection
The problem with LED TVs is that from the engineers' point of view, the LEDs used for backlighting do not produce a perfectly white color.
For a more perfect picture, with many shades and deep blacks and other colors, you need a perfectly white light sheet.
In addition, the LCD matrix cannot block the light flux one hundred percent, which also prevents the production of pure black color.
These shortcomings are partly compensated by various complex technologies to improve image quality. But progress does not stand still and new technologies are gaining momentum.
SUHD TVs with QLED quantum dots
What is a Quantum Dot TV?
This is still the same TV, with a liquid crystal matrix, but it has a completely different technology for illuminating this matrix.
If in the previous generation of TVs the light sheet behind the matrix was created by LEDs, then in this generation the backlight is provided by a special coating of quantum dots.
Quantum dots are microscopic particles that, in simple language to put it simply, they begin to glow very brightly if you illuminate them.
The essence of the technology is that quantum dots of a certain size are applied to the film, which is placed behind the matrix, giving the desired shades of red and green.
Only a small part of the work is done by LEDs of blue color, which highlight this very coating.
Illuminated quantum dots begin to emit specified colors and when all three colors are mixed, a perfect white canvas is created. The result is amazing!
Combined with image enhancement technologies, quantum dot backlighting produced an amazing result. Compared to LED TVs, the color gamut has become much richer.
Just imagine, more than a billion shades!
This allows you to create such a picture, with such transitions and shades, that you will feel like you are simply part of what is happening on the screen.
But that's not all! No sooner had quantum dots gained momentum than OLED TVs entered the scene.
P.S. Information has appeared that in the near future, quantum dot TVs will not have backlighting using this technology, but the quantum dot matrix itself!
OLED Technology - Organic LEDs
OLED is a revolution in the field of imaging. The screen of such a TV consists of millions of very, very small RGB LEDs, LEDs pixels.
And this screen does not need backlighting, since the light is emitted by the diodes themselves. It also does not need a filter.
Each pixel is individually controlled and can emit any of a billion shades of color, and will turn off when needed to produce pure black.
The absence of multilayers made it possible to make these TVs comparable in thickness to the thickness of the mirror in your hallway.
Thickness OLED TV
OLED - Looks like glass on a stand.) But it’s not just “slenderness,” but exceptional image quality that distinguishes these screens. The performance of LEDs is so high that even very dynamic scenes will not be blurry.
And the brightness range allows you to simultaneously, in one scene, show in all details both very bright and almost black objects, and they will be clearly visible.
This technology makes it possible to make not just curved screens; work is already underway on the fact that the screen can be rolled up like a mat. Such screens in the future will have flexibility and transparency.
This will allow us to find many new areas of application for OLED displays.
Unfortunately, you won’t be able to admire this truly super quality for long. The practice of using these televisions has shown that they, organic LEDs, have a tendency to burn out. (This reliable information from a specialist service center, unfortunately, I learned about this much later and could not report this in the article right away)
About TVs made using other technologies
Well, in fairness, it is also necessary to mention the existence of two more directions in the development of television technology.
There was a time, roughly right between televisions with kinescopes and plasma TVs, when projection televisions came onto the stage.
These were very bulky boxes inside which stood small display, from which, with the help powerful lamps, lenses and mirrors, the image was projected onto a large screen.
Do you know this kind of filmoscope in a box? Of course, I greatly exaggerated its structure, but the essence is correct. His strong point It was just the screen size.
Another type is laser TVs, haven’t you heard? Did not see? Not surprising!
These TVs are not widely used and are used only in the USA, Japan and maybe a few other countries.
The images on these TVs are drawn by multi-colored lasers using not only electronics, but also complex system mirrors But as experts say, the picture quality is higher than in LCD panels.
Which TV to choose LED, OLED, or quantum dots
Well, this is quite a voluminous review, but what’s the end result?
What technology should you choose a TV made using?
Plasma, projection, LCD TVs are not considered. They are out of the game.
Although I feel sorry for the plasma!
That leaves LED, OLED, and Quantum dots.
According to experts and mine too, LED TVs will for a long time occupy leading positions both among manufacturers and in store windows, and in our homes.
The technologies have already been developed, the image quality is excellent. The process of stuffing them with additional capabilities is underway.
In market lifespan LED TVs Also important factor is the price.
So for TVs using quantum dot and OLED technology, the price tag starts from approximately one hundred thousand rubles, and the most expensive one found is 1 million 600 thousand rubles. But I think this is not the limit.
And if you have this money………The main thing is to get through the doors. And yes, remember the fragility of OLED!
Well, for those who live more modestly, I will give simple recommendation- Don’t try to financial opportunity, purchase TVs from “lagged behind the train” brands.
After looking at them from the inside, sometimes you get the impression - “I blinded you from what was”
According to the quality of transmission, pictures, matrix class and price, respectively, are marked in the following order: HD / Full HD / Ultra HD.
SAMSUNG is probably the best in the consumer goods segment.
But of course, there are other excellent brands, many of which are beyond the means of most ordinary consumers, and you won’t find them in chain stores.
But still, the choice of a manufacturer’s brand is a matter of purely personal affection.
And of course, the store manager’s ability to convince you of the “right” choice.)
By the way, about technology and that
Overall, the TV's 10-bit SUHD display delivers the most lifelike images and amazingly accurate color reproduction. Quantum LCD TVs are superior to previous generation LED screens in all respects and are in no way inferior to OLED technological solutions.
In the previous article we looked at why. Now it’s worth taking a closer look at each of the four presented Samsung models SUHD to evaluate their features.
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The graceful curve of the KS9000 and KS7500 screen
The models are united by a beautiful Curved TV screen with 4K resolution and an immersive effect, which is ideal for watching large-format films and video games.
The flagship KS9000 has a maximum diagonal of 78 inches - this is the largest of all possible quantum Samsung panels SUHD. There are also diagonals of 65, 55 and 49 inches with a design element common to all sizes - an elegant metal leg. Curved screen inextricably with large diagonals, so if you want to create a real home cinema, then Samsung SUHD TV models with Curved TV screen will be a real discovery for you. You will experience immersion in what is happening on the screen no worse than in a cinema, where everything is thought out to the smallest detail.
The same applies to the most beautiful models of the KS7500 series, among which you can find diagonals of 65, 55 and 49 inches. The main overall design element of the KS7500 can be considered the beautiful legs located closer to the sides of the TV. The uniqueness of the stand lies in the absence of any fastening screws - the legs simply snap onto the stand.
Model Samsung SUHD K7500
Besides external differences There is also one significant thing - the patented Supreme UHD Dimming technology. Supreme UHD Dimming is a local dimming system for SUHD TVs that makes blacks look especially natural. The older model KS9000 has 1152 blocks of local video content enhancement, and the younger KS7500 has 576.
Among general characteristics can be distinguished:
- Maximum realistic picture with Quantum Dot display
- Advanced dynamic range HDR with 1000 nits brightness
- Ultra Black anti-glare screen coating
- Impeccable 360° design
- Immersive Curved TV Screen
- 10-bit UHD 4K panel delivering up to a billion colors
- Universal Samsung remote control One Remote
- Smart Hub - now your favorite content is collected in one place
- Ultra-thin screen bezels
On the left is the K9000 model, on the right is the K8000 model.
Slim minimalism KS8000 and KS7000
Fans of classic flat LCD screens will be pleasantly surprised by the presence of Samsung SUHD models KS8000 and KS7000, because for some interiors a flat-screen or wall-mounted TV is indispensable. In addition, Samsung SUHD TVs reduce reflections sunlight, you can enjoy extremely clear images from any angle.
The older KS8000 supports Supreme UHD Dimming technology with the same number of local video content enhancement blocks as the KS9000. The KS7000 replicates the UHD Dimming features of the KS7500. Along with the maximum available diagonal of 75 inches, the older model can offer sizes of 65, 55, 49 inches, the younger - 60, 55 and 49, respectively.
The seamless, sleek design of Samsung SUHD TVs is called "360 Design". Clean lines run throughout the entire display – even at the back. Not a single screw is in sight, and the rich matte texture adds an element of sophisticated elegance. Thanks to thoughtful design solutions every TV Samsung series SUHD harmoniously complements any interior.
Model Samsung SUHD K7000
Among the general characteristics we can highlight:
