HD quad resolution. Hd quad resolution Why do you need wqhd resolution in the monitor

When you go to a store to buy display devices, whether it's a phone or a TV, you run into some pretty confusing terms. You better understand them before making the right decision. One of the main characteristics is the screen resolution you need.

We will explain to you the difference between standard terms and it is better to tell one model from another, we are here to explain the difference between standard terms and the resolutions they correspond to, but do not forget that the sharpness of your display, pixel per inch, depends on the resolution and screen size .

In other words, a 2560 x 1440 pixel display will look sharp on a smartphone, but it won't look as cool when stretched across 40 or 50 inches of space. Just remember that more pixels don't always mean a sharper screen, as size matters too.

HD AND FULL HD

Let's start from the end, HD is High Definition. The term was first applied to televisions and meant having 720 rows of pixels or more - the usual resolution combination is 1280 x 720 pixels.

Full HD raised the number of rows to 1080 and the typical resolution is 1,920 x 1080 pixels.

QHD, WQHD and 2K

Full HD screen resolution didn't last long, the next step was Quad High Definition, or QHD - 2560 by 1920 pixels. This is the standard for many flagship phones right now. It is noteworthy that the name Quad was used for a reason - four displays of 1280 x 720 pixels are placed in one QHD.

Many phones still use Full HD. It is very difficult to find a difference in image quality on a 5 or 6 inch display. But the presence of Full HD in the technical specifications looks attractive even now. That's why many phone manufacturers go for it.

The same specifications apply to WQHD or Widescreen Quad High Definition, but in this case, the emphasis is on the aspect ratio of 16:9, which guarantees high image quality. But in fact, the specification of WQHD and QHD is the same.

The next one is 2K. The term is used rather erratically in the industry. But technically it can refer to any display larger than 2000 pixels (2048 x 1080 for example). However, WQHD and QHD are often referred to as 2K because they are half the height and width of 4K.

4K and UND

4K first appeared as a cinema standard with 4096 by 1160 pixels, hence the name 4K. But in consumer electronics, it has changed to 3840 x 2160 pixels. So 4,000 are out of stock. But at the same time, four Full HD fit in 4K.

UND or Ultra High Definition means the same as 4K - 3840 by 2160 pixels. Some of these terms are shared, but most use 4K for both gaming devices and TVs.

What awaits us in the future

These were the main terms that you will come across in your online travels in search of the devices you need.

But there are others. Some manufacturers are pushing ahead with 5K (5120 x 2880 pixels) and 8K (7680 x 4320 pixels). But even on massive screens, it's hard to tell if the human eye can really tell the difference.

Are there many terms for mobile device screen characteristics? and sometimes it's hard to tell them apart. For example, the abbreviated terms "qHD" and "Quad HD" are very similar, although they mean completely different screen resolutions. What is "Quad HD" and why is "qHD" a completely different term? Quad HD is a less complicated shorthand for WQHD, meaning 2560 x 1440 pixels, four times the resolution of a 720p HD screen. But this is not. Such a resolution may not be necessary for a smartphone, but it is in any case higher than Quad HD.

To understand the intricacies of screen terminology, Thomas Newton helped readers of Recombu with his note “Quad HD vs qHD vs 4K Ultra HD: What does it all mean?” Published on the pages of this resource.

[W]QHD. About the "disappearing" letter

A WQHD display has a 16:9 aspect ratio, so widescreen looks great on such a screen ( W idescreen) content. That's where the "W" comes from. The same resolution is sometimes called "1440p" or "QHD", leaving one to guess about this letter. For example, the LG G3, according to Thomas Newton, the most impressive phone presented by LG in its history to date, has such a resolution, in which the qualities inherent in a modern premium phone are earlier than others.

What is qHD resolution?

qHD - The spelling of this term is similar to [W]QHD - and in some cases completely the same - but the difference is huge. qHD means only Quarter High Definition, or 960 x 540 pixels, which is one fourth of Full HD. Phones such as the HTC Desire 601, Samsung Galaxy S4 Mini and Sony Xperia M2, as well as the budget Lollipop-smartphone Micromax Canvas Spark, are characterized by a similar resolution.

What does 4K resolution mean?

4K, or 4K Ultra HD to use the full term, means that the screen resolution is 3840 x 2160 pixels. That is four times more than Full HD (1080p, 1920 x 1080 pixels). It would seem that there should be no differences from "Quad HD" and it is very easy for users to confuse these terms.

The term 4K Ultra HD often appears in the news in connection with the topic of HD TV, television with 4K resolution. Although there is not much video content in this quality, this does not stop electronics manufacturers from announcing TVs that support such high quality playback.

Speaking of phones, not only the latest flagships, but also the Samsung Galaxy Note 3, Sony Xperia Z2, Acer Liquid S2 and are capable of shooting 4K video at around 30fps. This feature is becoming a common feature of premium smartphones. There are no phones with such screens yet, but the Sharp 4K display is the right size.

Thomas Newton also gave a table explaining what some of the terms that characterize screen resolution mean.

Please note that in the table "QHD" (all capital letters) is indicated in two qualities - an additional term corresponding to WQHD, and Quarter High Definition (qHD). Therefore, sometimes, in cases where all letters are written in capitals, it can be difficult to understand which of the two “QHD” is meant - in the meaning of “qHD” (960 x 540 pixels) or “WQHD” (2560 x 1440 pixels). We can only guess from the context.

Did this explanation help you figure out which term means which screen resolution? Is this clarification of terminology useful for experienced smartphone users? Or is it useful only to those who have only recently acquired a “smart” phone, and the rest have long known what and in what cases each term means?

Recently, display resolution has become almost one of the key factors when choosing a smartphone. But how worth it is to buy a mobile with Quad HD or 4K resolution? What role does pixel density play here? And was Steve Jobs right when he said that 300 ppi is this the most acceptable pixel density? We will try to understand all this further.

HD(from English high definition) - high resolution, which is equal to 1280x720 pixels. In this case, the pixel density depends on the size of the screen. With a diagonal of 4.3 inches and HD resolution, the pixel density is 342 per square inch, with a 4.7-inch display - 312 ppi. At one time, Steve Jobs said that 300 ppi is the most optimal pixel density, since a higher value is simply not perceived by the human eye, and at a lower value, image quality deteriorates. To some extent, he was right, but it all depends on the size of the screen and the distance from which the user is looking at it.

Full HD is the next stage in the development of smartphone displays. Full HD resolution is 1920x1280. For smartphones with 5-inch screens, pixel density at resolution Full HD is 441 ppi. At the same time, smartphones are increasingly appearing, the display resolution of which is 2k. QHD, Quad HD or simply 2K is 2560×1440 pixels. 5.5 inch QHD has a pixel density of 538 ppi. Below you can see a visual difference between these two standards.

In its turn Ultra HD displays have a resolution of 3860×2160, and 4K- 4096×2160. The latest resolution is unlikely to reach smartphones anytime soon, since such a pixel density would be simply meaningless on a tiny display, but as a marketing ploy, this is quite justified, because many buyers are willing to pay money for a device that is bigger, better, faster, even it's only visible on paper. It is more appropriate to use 4K displays on tablets (quite realistically in the near future) and, of course, TVs, which, in fact, is happening.

When it comes to using high-resolution displays on smartphones, there are two main problems. Firstly, it is the optimization of applications and all other content to the new standard. If the screen resolution of the smartphone is QHD and applications are optimized for Full HD, then some of the pixels do not play a special role in the display. Secondly, more pixels require more resources. As a result, the processor works harder and the battery drains faster. If we compare these two factors, it turns out that at this stage, too high a resolution for smartphones is absolutely meaningless - you get a device that needs to be charged more often, while its advantage is visible only in the technical documentation.

Quality pictures and 2K wallpapers 1440×2560

For phones and smartphones with an ultra-resolution 2K display, 1440×2560 pixels, we offer you to download wallpapers with high quality images and a variety of themes, from nature, space and girls to cities, cars and beautiful objects. 2K pictures 1440×2560 are available for free and are easy to download.

Wallpapers 2K for screensaver on the screen 1440×2560 pixels (selection №8)

A fresh selection of high quality 2K wallpapers for phones with a 1440×2560 pixel screen. You can completely free of charge and without registration download this selection of pictures in the archive or by the piece. Here we have collected screensavers for every taste, but it so happens that most of the wallpapers are more with dark tones. Among the topics, you will find pictures with sports cars and cars, landscapes, nature (there are several options for photos of space and the night sky), girls, animals.

Permission: 1440×2560 | Format: JPG | Number of pictures: 30 pcs.

Pictures with 2K resolution 1440×2560 pixels (selection #7)

It's time for the seventh collection of beautiful pictures with ultra high resolution 2K or 1440×2560 pixels, which can be downloaded to your smartphone via a direct link. Here are collected only vertical wallpapers with different themes: nature, starry sky, flowers, modern cars, cats, nature landscapes and other equally interesting categories. We tried to select only high-quality pictures so that every pixel of your smartphone conveys good detail of the new splash screen.

Permission: 1440×2560 | Format: JPG | Number of pictures: 28 pcs.

2K 1440×2560 wallpapers for smartphones (selection #6)

Smartphones with a 2K screen are rapidly gaining popularity these days. But for such mobile devices, high-quality wallpapers with a resolution of 1440 × 2560 pixels are also needed. We offer you a fresh selection of beautiful high-resolution QuadHD pictures for download, which you can set as a background or screensaver. In the archive you will find wallpapers of cars, animals, mountains, landscapes or some other objects.

Permission: 1440×2560 | Format: JPG | Number of pictures: 35 pcs.

A selection of high-quality 2K pictures 1440x2560 (Quad HD) №5

We hope you have already downloaded pictures with a resolution of 1440x2560 pixels on our website. Don't keep you waiting for a batch of new 2K wallpapers or as I call it - Quad HD photos. So far, there are not very many images of this size, so there are only about 30 images in our selection. Among the topics, everything is standard: nature, cars, animals (cats and dogs), beautiful landscapes, cities and others.

Permission: 1440x2560 | Format: JPG | Number of pictures: 30 pcs.

Collection of 2K wallpapers with a resolution of 1440×2560 pixels #4

A new collection of wallpapers with a resolution of 1440×2560 pixels, which is mobile 2K, has become available for download on a smartphone. In this collection, you will find 25 high-quality pictures that can serve as a new screensaver or wallpaper. Among the categories, there is an autumn theme, modern cars, different flowers, landscapes, drawings and abstractions.

Permission: 1440×2560 | Format: JPG | Number of pictures: 25 pcs.

Pictures with 2K size - 1440x2560 pixels (selection #3)

Finding high-quality 2K images on the Internet is still difficult, but we have prepared a fresh selection with wallpapers that have a resolution of 1440 × 2560 pixels. At this size, all the details are visible in the photos, which will give the screensaver on the smartphone a spectacular look. This assembly includes such topics: beautiful landscapes, cars, nature, food, non-standard pictures, girls and others. You can download the archive with new wallpapers via a direct link on our website.

Permission: 1440×2560 | Format: JPG | Number of pictures: 40 pcs.

Wallpapers for 2K screens with a resolution of 1440×2560 pixels (#2)

It's time to update the backgrounds of your smartphone, which has a 2K mobile screen with a resolution of 1440×2560 pixels. This is the second selection of Quad HD wallpapers on our site, which we have hand-crafted for you. Here, as usual, all popular topics (cars, nature, animals, cities, abstractions, various beautiful objects, etc.). Download the archive with pictures via a direct link.

Permission: 1440×2560 | Format: JPG | Number of pictures: 35 pcs.

Pictures with a resolution of 1440 × 2560 pixels (selection No. 1)

We present to your attention the first selection of wonderful pictures with Quad HD resolution, which is 1440 × 2560 pixels. At the moment, there are still few smartphones with such a display, but if you have such a model, we offer you to download the wallpaper archive for free and set it as a new background image.

Permission: 1440×2560 | Format: JPG | Number of pictures: 30 pcs.

Overview of the smartphone Explay HD QUAD

• Smartphone
• Battery
• Instruction
• stereo headset
• micro USB cable
• USB adapter for 220V network

Literally a couple of months after the start of sales of the company's flagship smartphone Explay HD, a quite successful upgrade of this device hit the shelves. The novelty received a chipset from the Taiwanese manufacturer MediTek MT6589 (quad-core processor), the ability to record 1080p videos at 30 frames per second and at the moment the latest version of the Android operating system - 4.2.1 Jelly Bean. In addition, the gadget will be sold in three colors: white, blue and gray. From the predecessor Explay Quad got the look, cool IPS HD-display and a good camera.

Since I have already reviewed Explay HD, only distinctive features and innovations will be reflected in this text.

Design, dimensions, controls

The appearance of Explay HD Quad has remained the same: a mixture of Samsung Galaxy S4 and Galaxy Premier, only without the central mechanical button. I really liked the design, at least the device does not look like another Chinese clone of the flagships of A-brands. Despite the fact that the manufacturer uses a new chipset in the Quad, the dimensions have not changed - 143x78x8.9 mm, the weight has not changed either - 181 grams. To be honest, we could slightly correct it down, after all, the device is somewhat heavy.

Although the previous version of Explay also had several colors, nevertheless, I saw only white live. I hope that other colors of both HD and HD Quad will go on sale. Let me remind you that there are only three options: white, gray and blue.

It seemed to me, purely subjectively, that the novelty was assembled a little better, however, there were no complaints about Explay HD either: no squeaking, no backlash, the cover does not press through to the battery, and does not crackle when pressed hard.

Light and proximity sensors are located on the top of the front panel. The first reacts relatively quickly, automatically and smoothly adjusting the brightness of the screen glow to the ambient light. The second works instantly if you bring the phone to your ear during a call. There were no false positives during testing. Next to the sensors are the front camera and earpiece. It has an average volume, mainly high and medium frequencies are heard, a little more bass is clearly missing. However, intelligibility is quite good, you can hear clearly and without extraneous sounds. There are no wheezing or overloads.

Under the screen - touch buttons "Menu", "Back", "Home". They are applied with white translucent paint and have a fairly bright backlight. The microphone is under the "Menu".

On the left side there is a volume rocker. It is small, rather thin and almost recessed into the case. Pressing is soft, and the stroke is minimal. Feels easy. A little lower is the activation of the camera. On the right is the on / off button of the device, it also acts as a screen lock and activation of the display backlight.

On top are microUSB without a plug and a standard 3.5 mm headphone jack.

A huge camera eye, sticking out above the body as much as 2.5 mm, flash and speaker are located on the back of the case.

To open the lid, you need to pry it from the recess on the lower left end. At the top left is a slot for a memory card (“hot” replacement is not supported), on the right are SIM2 (2G / 3G) and SIM1 (2G).

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When we are proudly shown TVs, monitors, displays labeled FullHD, this “highest” resolution is presented as the highest good. But high-definition television or HD video came to us relatively recently, so they have not yet had time to demand replacement in accordance with the technology update. Naturally, with a sometimes quite insignificant difference in price, for example, FullHD and HD ready TVs, the consumer wants to know exactly what he is buying and whether he made a mistake in choosing. The displayed pictures do not always make it possible to decide: the quality of the image depends not only on the resolution, but also on many other factors (brightness, contrast, screen viewing angles, etc.), and the subjective opinion is again marking time. Let's see what is the difference between the main lures of television and video equipment - FullHD and HD resolutions.

HD resolution standard(High Definition) includes any resolution in excess of the standard format (i.e. 720x576). Today, HD resolution (HD ready label) means the minimum requirements for a resolution of 1280x720, but less common resolutions, such as 1920x1440, are also included in the high definition standard. Marketing also introduces the designation HD ready to designate matrices capable of displaying the HD standard on a par with standard definition.

In fact, Full HD- this is HD with a resolution of 1920x1080, that is, higher than that of HD.

The Full HD naming is not a quality standard - it is a marketing tag designed to attract buyers and prevent them from getting confused by digital resolution values. There is an HD ready 1080p standard that corresponds to 1920x1080 resolution, but is not equivalent to Full HD: often video equipment does not technically comply with the mentioned standard, limiting itself to resolution compliance. HD ready, on the other hand, is a standardized designation for receivers.

For the consumer, the difference between Full HD and HD resolutions lies in image quality. High definition is due to the increase in detail due to the increase in the number of pixels of the screen matrix. Accordingly, a Full HD image contains more information than an HD or standard definition image. According to experts, the difference in the amount of information can reach a fourfold size.

Also, Full HD display matrices are capable of displaying both a picture with a resolution of 1920x1080, and 1920x720, and a standard 720x576, while HD ready does not aim at a higher resolution. This does not mean that when playing a video of a different format, we will get a TV grid or “snow”. HD displays increase the standard video resolution to the resolution of the installed matrix, the HD720 image is displayed unchanged, and the HD1080 is reduced - again, to the physical capabilities of the matrix. Full HD displays, any resolution below 1920x1080 “hold out” to their own matrix. As a rule, large screens involve the playback of media content, so the quality of the picture will be fundamentally important, and the choice remains with Full HD.

In terms of scanning, HD means exclusively progressive, although such devices can also play 1080i (interlaced) with a little distortion. FullHD includes both interlaced and progressive scans. Such a compromise makes it possible to receive a signal, for example, from a satellite without problems with data flow and channel capacity.

Today, the price range of television and video equipment has a very wide range, so there is no need to talk about a clear advantage in the cost of one or another class of devices. However, most manufacturers, in addition to Full HD format matrices, install powerful processors that can quickly process an image, so if the diagonals are equal, such models can be significantly more expensive. Another important point: Full HD is not equal to HD1080p, so TVs and monitors that do not technically meet the quality standard can be labeled Full HD (without deceiving potential buyers), but such devices are much cheaper than those that are labeled HD1080p.

thedifference.ru

New Quad HD displays from LG

Recently, LG introduced a new generation display for mobile devices. The company gave it the name "Quad HD". According to LG engineers, this display has the highest resolution among smartphones today. It has a resolution of 2,560 x 1,440 dpi. The new 5.5-inch Quad HD is the first Quad HD AH-IPS LCD screen for smartphones, the company says. This display exceeds the density of Apple displays (Iphone 5, Ipad 3), and not only.

The leader in screen density is the device of the Taiwanese company - HTC One, with 468 pixels per inch, followed by the Samsung Galaxy S4 - 441 pixels per inch, and only then the Apple Iphone 5, which offers a density of 326 pixels per inch.

As you might have guessed, the new panels are so named because they have 4 times the resolution of HD screens.

In addition, the new development is very thin, the thickness of the display is only 1.21mm.

Quad HD screens deliver clearer, richer colors and better brightness and contrast than 1,280 x 720 HD displays. Quad HD makes the smartphone more than just a portable device. With the help of the new technology, mobile devices will be able to play Blu-ray videos with ease, as well as display web pages without distortion, just like a PC.

It should be noted that this display is made using AH-IPS technology, which means clear and deep color reproduction, as well as large viewing angles without image distortion. The brightness of the new panel reaches 430 nits.

First, to work with such displays, smartphones will need more powerful GPUs on board.

Accordingly, this will entail more power consumption than when working with FullHD and HD matrices.

Most likely, smartphones with these displays, at the beginning of sales, will cost a lot of money and not everyone can afford such a luxury.

Such a move by the company is primarily aimed at "conquest" of the mobile device market. As of today, LG's stock is up a lot compared to previous years. This is due to the fact that the company began to produce more high-quality smartphones, which are more competitive with other "giants" in this industry. LG Optimus and Nexus, devices of this line are now very popular.

So far, nothing is known about the release date of the new Quad HD, as well as smartphones based on them.

The acronyms referring to smartphone displays seem a little unusual, but if you want to know what all those numbers and abbreviations mean for smartphone displays, we'll give you that opportunity. Do you want to understand what is best suited for a particular type of display, and what do the differences in screen resolutions mean? Read our article!

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When we start talking about smartphone displays, it is imperative to take into account such an aspect as screen resolution. This category includes three dimensions: display size (in inches), total screen pixel count, and display pixel density (pixels per square inch, ppi). If you know the screen size, you can determine how many pixels are in a square inch. You can easily find out the ppi of your phone using the Pixel Density Calculator.

Below we publish the main characteristics of the displays, and they will start with HD resolution or higher, since most modern smartphones are equipped with such screens. You can also pay attention to the declared "nits", which serve as an indicator of the brightness of the displays.

HD

The abbreviation HD in English means "high resolution". HD is defined for a pixel value of 1280 x 720 pixels. No matter how big the display is, as long as the above values ​​remain, this is an HD display. It can be concluded that the smaller the HD screen, the higher the pixel density, and, theoretically, the better the image. So, just having an HD display doesn't mean much, because on a 5-inch screen the picture quality will be different from that on a 10-inch panel (recall: display dimensions are measured diagonally to take into account different aspect ratios).

For example, on a 4.3-inch screen, the pixel density will be 342 ppi. The 4.7-inch screen will have a lower density at 312 ppi, although both of these displays are still HD. According to Apple, 300 ppi is optimal when the human eye can no longer distinguish between individual pixels at a certain viewing distance (and on a display of a certain size).

Full HD

Full HD is the next step and is currently the standard for smartphone screen resolution, although 2K (QHD) is gaining popularity on high-end devices as the Oppo Find 7 and LG G3, the first commercially available devices, have QHD screens.

Full HD is 1920 x 1080 pixels. Again, the pixel density will depend on how big the display is overall. Smartphones with a 5-inch screen have a pixel density of about 440 ppi, and a 5.5-inch display will have a maximum of 400 pixels per inch.

QHD, Quad HD or 2K

QHD is equivalent to the definition of Quad HD and is 4 times the HD format. This means that you can fit the same number of pixels as 4 HD displays into one QHD display of the same size. The number of pixels for the QHD format is set at 2560x1440. A 5.5-inch screen of this format has a pixel density of 538 ppi. By comparison, a 5.5-inch Full HD display contains 400 pixels per square inch.

The definitions also often refer to a smaller number of pixels, which is why HD is sometimes referred to as 720p, Full HD, respectively, 1080p, and so on. In terms of QHD, the name 2K comes from the fact that the higher number of pixels is over 2000, and this situation can look a little confusing (in fact, such a format should be called 2.5K for more accuracy).

Many modern phones from major manufacturers (Samsung, Motorola, Huawei) are equipped with 2K displays as standard.

4K or Ultra HD

Similar to the 2K format, the name 4K also comes from the larger number of pixels. In technical terms, this means 4096 pixels for 4K and only 3840 pixels for Ultra HD. Although the two terms are often used interchangeably, they are actually quite different.

The screen format Ultra HD has parameters of 3860 x 2160 pixels, and 4K - 4096 x 2160 pixels. Both definitions of the above formats are often shortened to 2160p, and the pixel difference is relatively small (but it is still there).

One of the first phones to feature a 4K display was Sony's Xperia Z5 Premium, which features a 5.5-inch Ultra HD screen. This manufacturer characterizes the format of this display as 4K, but in fact, the term Ultra HD is more appropriate here, and not "true" 4K. However, the Z5 Premium has a screen density of 806 ppi - far more than many top smartphones can offer, and even more than what human eyes really need.

Screen Resolution Trends

While smartphone screens continue to grow in size, the race between phone manufacturers for 4K displays that we expected a year ago has not happened. To date, there are only two models with screens of this format, and both from Sony - Z5 Premium and Xperia XZ Premium. Instead, a 2K-level display has become the norm in high-end smartphones, rather than a higher resolution option. This has a lot to do with power issues, among other reasons, as larger displays with higher resolutions require more power. With battery life a hot topic of discussion these days, phone makers don't seem to be in too much of a rush to take a step forward. However, 2017 could very well be the year we see more smartphones with Ultra HD displays.

Display types

Smartphones use various types of displays: LCD, OLED, AMOLED, Super AMOLED, TFT, IPS and a number of other less common ones, such as TFT-LCD. One of the most commonly used smartphone screens is IPS-LCD. But what does this mean?

LCD

The abbreviation LCD stands for "liquid crystal display", and this name refers to an array of liquid crystals illuminated by a backlight. The ubiquity and relatively low cost of LCD panels make them a popular choice for smartphones and many other electronic devices. LCDs also look good in bright sunlight, as the entire display is additionally illuminated from below, but it doesn't boast accurate color reproduction like other displays that don't require a backlight.

Smartphones today use both TFT and IPS displays. TFT stands for Thin Film Transistor, an advanced version of LCD that uses an active matrix (like AM in AMOLED). The term "active matrix" means that each screen pixel is connected to a transistor and a capacitor separately.

The main advantage of TFT is relatively low cost and increased contrast level compared to conventional LCD displays. The disadvantages of the TFT LCD screen are higher power consumption, less wide viewing angles, and poorer color reproduction. For these reasons and the declining cost of alternatives, TFT displays are now less and less used in smartphones.

The letters IPS literally stand for "in-plane switching" and this technology is an improvement on conventional TFT displays, providing better color reproduction and better viewing angles. This is achieved by using two transistors for each pixel, combined with a more powerful backlight than other types of non-LCD displays. Typically, IPS panels use less power than a standard TFT display.

By the way, there are other acronyms that can be seen along with the letters IPS, such as IPS-NEO. In this case, it is the patented name for a technology created by the Japanese company JDI that can prevent backlight scattering. Displays with this technology function in the same way as any other IPS-LCD screens.

AMOLED

AMOLED stands for Organic Active Matrix Light Emitting Diode. All this may seem complicated, but in reality it is not. We've already seen active matrix in TFT LCD technology, and OLED is just a term for another thin film display technology.

OLED is an organic material that, as the name suggests, emits light when electricity is passed through it. Unlike backlit LCD panels, OLED displays are always "off" until individual pixels are charged with electricity. This means that the above displays have richer blacks and use less power when black or dark colors are displayed on the screen. However, light themes on AMOLED panels use more power than LCDs with similar themes. Note that OLED screens are significantly more expensive than conventional LCD displays.

Since the black pixels are "off" on OLED displays, the level of contrast is higher than on LCD panels. AMOLED screens, among other things, also have a very high refresh rate, but their disadvantage is that they are not clearly visible in direct sunlight, unlike backlit LCDs. Other factors to take into account are screen burn-in and diode degradation (since they are organic). On the plus side, AMOLED displays are thinner than LCD panels and can still be flexible.

What's the difference between OLED, AMOLED and Super AMOLED?

OLED stands for Organic Light Emitting Diode, and an OLED display consists of a thin sheet of electroluminescent material whose main advantage is its own emission. In view of this, any illumination is no longer required, and this circumstance helps to reduce energy consumption. OLED screens are most commonly referred to as AMOLED screens when used in smartphones or TVs.

As we mentioned above, the letters AM of the acronym AMOLED stands for "active matrix", which is different from passive matrix OLED (P-OLED), the latter not very common in smartphone displays.

Super AMOLED is Samsung's name for its displays, which used to be exclusive to top-of-the-line devices but are now found in cheaper devices as well. Similar to IPS LCD, Super AMOLED improves upon the basic foundation of AMOLED by embedding the touch layer directly into the screen itself rather than on top of it. As a result, Super AMOLED panels have better readability in bright light than AMOLED displays, plus they consume less power. As the name suggests, Super AMOLED is simply an improved version of AMOLED. We add that this is not some kind of publicity stunt - Samsung panels are periodically recognized as one of the best in the world.

retina

Retina is another marketing term coined within the walls of Apple. A Retina display does not have one specific attribute, other than being of sufficient resolution that the human eye cannot distinguish pixels at a normal viewing distance, and having a pixel density of at least 300 ppi. As we already know, Apple doesn't measure ppi values ​​in the same way as other phone manufacturers. Measurement features are likely to vary depending on the size and resolution of the display. Apple popularized the concept of Retina with the release of the model
The iPhone 4, which had a 3.5-inch IPS LCD screen, had a resolution of 960 x 640, which equaled 330 pixels per square inch.

Given that a 5.5-inch QHD display is fairly common among high-end Android phones these days, and devices like the S7 Edge have 534 ppi panels, Apple has finally abandoned its belief that 300 ppi is more than enough. As a result, this led to the fact that the iPhone 6 Plus received a Full HD display with a pixel density of 401 ppi. iPhone 7 and 7 Plus have 326 ppi and 401 ppi, respectively.

What type of display is best?

As we have seen, each term is not limited to a single manufacturer: AMOLED is not always associated with Samsung, and Retina is not necessarily associated with Apple. The IPS LCD displays found in the iPhone are now manufactured by LG. Samsung has developed panels for the iPad, and not all devices from this manufacturer are equipped with AMOLED screens. This is not exactly the case when it is appropriate to ask which display is better - this is a kind of compromise between pluses and minuses.

The gist of it all is this: the numbers and technical specs are worth considering when comparing the displays on two smartphones, although the actual performance of those displays is more important. It is impossible to measure a display on paper - that is, you need to see it in reality to understand whether it is cold for you or too warm, you like its saturation, brightness, contrast, viewing angles, etc. Finally, you need to pay attention to your usage habits and choose the appropriate screen accordingly: if you work all day at your desk and are chained to the couch at night, then the benefits of a daylight LCD display are probably not too important to you. If you spend a lot of time outdoors, then the above type of display will suit you. Whether you're looking to squeeze every last drop of power out of your battery or you're just crazy about vibrant colors and rich contrast, then take a look at AMOLED panels.

What is your favorite display type? Have you noticed the difference between different types of displays? Tell us about it in the comments.