samsung tft display vs amoled free sample

Thanks for the display technology development, we have a lot of display choices for our smartphones, media players, TVs, laptops, tablets, digital cameras, and other such gadgets. The most display technologies we hear are LCD, TFT, OLED, LED, QLED, QNED, MicroLED, Mini LED etc. The following, we will focus on two of the most popular display technologies in the market: TFT Displays and Super AMOLED Displays.

TFT means Thin-Film Transistor. TFT is the variant of Liquid Crystal Displays (LCDs). There are several types of TFT displays: TN (Twisted Nematic) based TFT display, IPS (In-Plane Switching) displays. As the former can’t compete with Super AMOLED in display quality, we will mainly focus on using IPS TFT displays.

OLED means Organic Light-Emitting Diode. There are also several types of OLED, PMOLED (Passive Matrix Organic Light-Emitting Diode) and AMOLED (Active Matrix Organic Light-Emitting Diode). It is the same reason that PMOLED can’t compete with IPS TFT displays. We pick the best in OLED displays: Super AMOLED to compete with the LCD best: IPS TFT Display.

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Steven Van Slyke and Ching Wan Tang pioneered the organic OLED at Eastman Kodak in 1979. The first OLED product was a display for a car stereo, commercialized by Pioneer in 1997. Kodak’s EasyShare LS633 digital camera, introduced in 2003, was the first consumer electronic product incorporating a full-color OLED display. The first television featuring an OLED display, produced by Sony, entered the market in 2008. Today, Samsung uses OLEDs in all of its smartphones, and LG manufactures large OLED screens for premium TVs. Other companies currently incorporating OLED technology include Apple, Google, Facebook, Motorola, Sony, HP, Panasonic, Konica, Lenovo, Huawei, BOE, Philips and Osram. The OLED display market is expected to grow to $57 billion in 2026.

AMOLED (Active Matrix Organic Light Emitting Diode) is a type of OLED display device technology. OLED is a type of display technology in which organic material compounds form the electroluminescent material, and active matrix is the technology behind the addressing of individual pixels.

An AMOLED display consists of an active matrix of OLED pixels generating light (luminescence) upon electrical activation that have been deposited or integrated onto a thin-film transistor (TFT) array, which functions as a series of switches to control the current flowing to each individual pixel.

Typically, this continuous current flow is controlled by at least two TFTs at each pixel (to trigger the luminescence), with one TFT to start and stop the charging of a storage capacitor and the second to provide a voltage source at the level needed to create a constant current to the pixel, thereby eliminating the need for the very high currents required for PMOLED.

TFT backplane technology is crucial in the fabrication of AMOLED displays. In AMOLEDs, the two primary TFT backplane technologies, polycrystalline silicon (poly-Si) and amorphous silicon (a-Si), are currently used offering the potential for directly fabricating the active-matrix backplanes at low temperatures (below 150 °C) onto flexible plastic substrates for producing flexible AMOLED displays. Brightness of AMOLED is determined by the strength of the electron current. The colors are controlled by the red, green and blue light emitting diodes.  It is easier to understand by thinking of each pixel is independently colored, mini-LED.

IPS technology is like an improvement on the traditional TFT LCD display module in the sense that it has the same basic structure, but with more enhanced features and more widespread usability compared with the older generation of TN type TFT screen (normally used for low-cost computer monitors). Actually, it is called super TFT.  IPS LCD display consists of the following high-end features. It has much wider viewing angles, more consistent, better color in all viewing directions, it has higher contrast, faster response time. But IPS screens are not perfect as their higher manufacturing cost compared with TN TFT LCD.

Utilizing an electrical charge that causes the liquid crystal material to change their molecular structure allowing various wavelengths of backlight to “pass-through”. The active matrix of the TFT display is in constant flux and changes or refreshes rapidly depending upon the incoming signal from the control device.

AMOLED and TFT are two types of display technology used in smartphones. AMOLED (active-matrix organic light-emitting diode) displays are made up of tiny organic light-emitting diodes, while TFT (Thin-Film Transistor) displays use inorganic thin-film transistors.

AMOLEDs are made from organic materials that emit light when an electric current is passed through them, while TFTs use a matrix of tiny transistors to control the flow of electricity to the display.

Refresh Rate: Another key difference between AMOLED and TFT displays is the refresh rate. The refresh rate is how often the image on the screen is updated. AMOLED screens have a higher refresh rate than TFT screens, which means that they can display images more quickly and smoothly.

Response Time: The response time is how long it takes for the pixels to change from one colour to another. AMOLED screens have a shorter response time than TFT screens..

Colour Accuracy/Display Quality: AMOLED screens are more accurate when it comes to displaying colours. This is because each pixel on an AMOLED screen emits its own light, which means that the colours are more pure and true to life. TFT screens, on the other hand, use a backlight to illuminate the pixels, which can cause the colours to appear washed out or less vibrant.

Viewing Angle: The viewing angle is the angle at which you can see the screen. AMOLED screens have a wider viewing angle than TFT screens, which means that you can see the screen from more angles without the colours looking distorted.

Power Consumption: One of the main advantages of AMOLED displays is that they consume less power than TFT displays. This is because the pixels on an AMOLED screen only light up when they need to, while the pixels on a TFT screen are always illuminated by the backlight.

Production Cost: AMOLED screens are more expensive to produce than TFT screens. This is because the manufacturing process for AMOLED screens is more complex, and the materials used are more expensive.

Availability: TFT screens are more widely available than AMOLED screens and have been around for longer. They are typically used in a variety of devices, ranging from phones to TVs.

Usage: AMOLED screens are typically used in devices where power consumption is a concern, such as phones and wearable devices. TFT screens are more commonly used in devices where image quality is a higher priority, such as TVs and monitors.

AMOLED and TFT are two different types of display technology. AMOLED displays are typically brighter and more vibrant, but they are more expensive to produce. TFT displays are cheaper to produce, but they are not as bright or power efficient as AMOLED displays.

The display technology that is best for you will depend on your needs and preferences. If you need a screen that is bright and vibrant, then an AMOLED display is a good choice. If you need a screen that is cheaper to produce, then a TFT display is a good choice. However, if you’re worried about image retention, then TFT may be a better option.

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These days you really only have two choices of screens when you are buying a smartphone or tablet: LCD or AMOLED. Many of you probably can’t tell the difference between the two screen types, but both technologies have inherent strengths and weaknesses. LCD has been around for a while, but AMOLED phones are gaining popularity thanks to Samsung and other manufacturers. There isn’t a clear winner at this point in time, so here’s a look at both.

LCD, Liquid Crystal Display, has been a part of our lives for years now. Besides mobile devices, we see LCD screens being used with almost every computer monitor, and in the majority of TVs. While these screens are made of wondrous liquid crystals, they also require a couple panes of glass, and a light source. LCD screens produce some of the most realistic colors you can find on a screen, but might not offer as wide of a contrast ratio (darker darks and brighter brights) as an AMOLED screen.

Some common terms you will find associated with LCD displays are TFT and IPS. TFT stands for Thin Film Transistor, which makes the wiring of LCD screens more efficient by reducing the number of electrodes per pixel. One benefit of TFT displays is an improved image quality over standard LCD screens. Another popular LCD technology is In-Plane Switching, or IPS, which improves upon TFT by offering much wider viewing angles and color reproduction on LCD screens. IPS screens are able to achieve this by keeping all the liquid crystals parallel to the screen. IPS is generally preferable to standard TFT.

AMOLED, Active Matrix Organic Light Emitting Diode, technology has grown in popularity in recent years, particularly among Samsung products. AMOLED screens consist of a thin layer of organic polymers that light up when zapped with an electric current. Due to this simple construction, AMOLED screens can be extremely thin and do not require a backlight. The benefit of losing a backlight is readily apparent: these screens are able to produce blacks so deep that the screen pixels can shut right off. Shutting off pixels can also save electricity and battery life in phones and tablets. Just keep your backgrounds close to black and you’ll save energy.

Sometimes when you read about AMOLED screens, you might hear people complaining about something called a “pentile” display. This is a feature of most color AMOLED screens. Instead of having just a single red, blue, and green sub pixel per actual pixel, pentile displays have a RGBG sub pixel layout which has two green sub pixels for each red and blue. The positive of this technology is that you are able to create a screen that is just as bright as normal screens with one third the amount of sub pixels. The negative of pentile screens is that they can appear grainy, or appear to be lower resolution due to the larger, more visible sub pixels. For a while, Samsung begun using a display type called Super AMOLED Plus, which does not use a pentile sub pixel layout and also improves viewability in direct sunlight — traditionally a weakness for AMOLED. Samsung equipped the Galaxy S II with a Super AMOLED plus screen, but then reverted back to Super AMOLED screens for the Galaxy S III, citing screen life as the reason for the switch.

There are pros and cons for each type of screen, and both screen technologies can produce vivid, beautiful displays. The only way to know for sure if the screen on your future device will satisfy you is to try it out for yourself. You will be able to easily see if the screen viewing angles, contrast ratio, and color reproduction will fit your needs after using the phone for just a few minutes.

Super AMOLED (S-AMOLED) and Super LCD (IPS-LCD) are two display types used in different kinds of electronics. The former is an improvement on OLED, while Super LCD is an advanced form of LCD.

All things considered, Super AMOLED is probably the better choice over Super LCD, assuming you have a choice, but it"s not quite as simple as that in every situation. Keep reading for more on how these display technologies differ and how to decide which is best for you.

S-AMOLED, a shortened version of Super AMOLED, stands for super active-matrix organic light-emitting diode. It"s a display type that uses organic materials to produce light for each pixel.

One component of Super AMOLED displays is that the layer that detects touch is embedded directly into the screen instead of existing as an entirely separate layer. This is what makes S-AMOLED different from AMOLED.

Super LCD is the same as IPS LCD, which stands forin-plane switching liquid crystal display. It"s the name given to an LCD screen that utilizes in-plane switching (IPS) panels. LCD screens use a backlight to produce light for all the pixels, and each pixel shutter can be turned off to affect its brightness.

There isn"t an easy answer as to which display is better when comparing Super AMOLED and IPS LCD. The two are similar in some ways but different in others, and it often comes down to opinion as to how one performs over the other in real-world scenarios.

However, there are some real differences between them that do determine how various aspects of the display works, which is an easy way to compare the hardware.

For example, one quick consideration is that you should choose S-AMOLED if you prefer deeper blacks and brighter colors because those areas are what makes AMOLED screens stand out. However, you might instead opt for Super LCD if you want sharper images and like to use your device outdoors.

S-AMOLED displays are much better at revealing dark black because each pixel that needs to be black can be true black since the light can be shut off for each pixel. This isn"t true with Super LCD screens since the backlight is still on even if some pixels need to be black, and this can affect the darkness of those areas of the screen.

What"s more is that since blacks can be truly black on Super AMOLED screens, the other colors are much more vibrant. When the pixels can be turned off completely to create black, the contrast ratio goes through the roof with AMOLED displays, since that ratio is the brightest whites the screen can produce against its darkest blacks.

However, since LCD screens have backlights, it sometimes appears as though the pixels are closer together, producing an overall sharper and more natural effect. AMOLED screens, when compared to LCD, might look over-saturated or unrealistic, and the whites might appear slightly yellow.

When using the screen outdoors in bright light, Super LCD is sometimes said to be easier to use, but S-AMOLED screens have fewer layers of glass and so reflect less light, so there isn"t really a clear-cut answer to how they compare in direct light.

Another consideration when comparing the color quality of a Super LCD screen with a Super AMOLED screen is that the AMOLED display slowly loses its vibrant color and saturation as the organic compounds break down, although this usually takes a very long time and even then might not be noticeable.

Without backlight hardware, and with the added bonus of only one screen carrying the touch and display components, the overall size of an S-AMOLED screen tends to be smaller than that of an IPS LCD screen.

This is one advantage that S-AMOLED displays have when it comes to smartphones in particular, since this technology can make them thinner than those that use IPS LCD.

Since IPS-LCD displays have a backlight that requires more power than a traditional LCD screen, devices that utilize those screens need more power than those that use S-AMOLED, which doesn"t need a backlight.

That said, since each pixel of a Super AMOLED display can be fine-tuned for each color requirement, power consumption can, in some situations, be higher than with Super LCD.

For example, playing a video with lots of black areas on an S-AMOLED display will save power compared to an IPS LCD screen since the pixels can be effectively shut off and then no light needs to be produced. On the other hand, displaying lots of color all day would most likely affect the Super AMOLED battery more than it would the device using the Super LCD screen.

An IPS LCD screen includes a backlight while S-AMOLED screens don"t, but they also have an additional layer that supports touch, whereas Super AMOLED displays have that built right into the screen.

For these reasons and others (like color quality and battery performance), it"s probably safe to say that S-AMOLED screens are more expensive to build, and so devices that use them are also more expensive than their LCD counterparts.

OLED displays are commonplace on all high-end phones, tablets, smartwatches, televisions, and even many of the many budget phones. However, there isn"t one type of OLED technology. Depending on your device, you may have an OLED, AMOLED, or POLED display.

OLED promises inky blacks, high contrast, low response times, and incredible brightness. There are a few downsides (primarily the burn-in phenomenon), but overall it"s the best screen technology you"ll find. We explain the background behind the acronyms, the difference between POLED and AMOLED, and which is better, helping you choose the right phone.

Every OLED screen comprises millions of diodes, hence the name organic light-emitting diode. Viewed under a microscope, each screen consists of a series of red, green, and blue diodes that can be individually turned on and off. Behind this, the light-emitting pixels of an OLED display emit blue and yellow light. The yellow and blue light combine to form white light, passing through the red, green, and blue subpixels to produce a single pixel. Because each pixel handles its light and color, OLED displays do not need a separate backlight.

As an OLED screen doesn"t need a backlight, black is produced by turning off the pixels, resulting in deep, consistent blacks. This allows manufacturers to implement things like an always-on display without quickly burning through battery life.

Another critical advantage of OLED tech is high contrast ratios. Technically, OLED displays offer "infinite contrast," or 1,000,000:1 contrast ratios. This is because OLED displays reproduce black by turning off pixels entirely, and contrast is measured by comparing the brightest part of the screen to the darkest part. Improved contrast makes on-screen content more vivid and makes bright highlights look more impressive. This also means that OLED screens can reach higher brightness than the best IPS LCD screens.

OLED displays can display more colors with greater color accuracy than their LCD peers. This is great for photographers and videographers using their phones to preview, edit, and create content.

OLED displays have near-instantaneous pixel response times. Older LCD screens often have lower response times because to change from one color to another, they must physically change the orientation of a liquid crystal, which takes time. An OLED display turns a subpixel on or off with an electrical charge, giving them a faster pixel response time.

The omission of a separate backlight and the use of fewer components means OLED displays can be thinner than LCDs, making them more versatile in their applications. This means they are more fragile and prone to damage in high-impact or high-stress situations. Engineers combat this by using technologies like Gorilla Glass and robust metal frames. Mitigation strategies like these raise the cost of OLED screens.

OLED displays can also be transparent, depending on the materials used. Transparent displays are helpful for in-display fingerprint readers and under-display cameras, which allow manufacturers to design smartphones with fewer and smaller bezels, notches, and display cutouts. When notches and cutouts are necessary, OLED displays have more even brightness around those cutouts and notches compared with LCDs, where the backlight has to make it around the cutout, and things get a little messy.

Of particular import to smartphones, OLED displays often consume less power, especially when displaying dark images or UI elements, thanks to the pixel-level regulation of brightness. However, at max brightness, an OLED screen usually uses more power than an equivalent LCD.

As with any new technology, OLED tech is not without its flaws.OLED displays are prone to degradation from age and UV exposure, resulting from the organic nature of the molecules that make up the diodes. The organic nature of OLED displays also leads to a phenomenon called screen burn-in, where static UI elements like menus, navigation bars, and status bars (elements that are on-screen for long periods) leave a permanent ghost image, even when they are not displayed. However, burn-in has been somewhat mitigated by pixel shifting and technological advancements in recent years.

Early OLED screens placed all the organic materials on a glass substrate. However, glass is rigid, so a flexible plastic substrate is needed to create foldable display screens, leading to the creation of POLED screens.

POLED (polymer organic light-emitting diode) offers advantages in terms of durability and versatility. The replacement ofglass substrates with plastic ones makes them more shock-resistant. Another unique advantage is in the implementation. Designers can reduce bezel size by folding the electronics underneath an edge of the display instead of having it be on the same plane. POLED displays are also significantly thinner than OLED displays with glass substrates.

Note the difference between P OLED and pOLED. pOLED is the trademark that LG Display uses to brand its plastic OLED displays. It produces these displays for a variety of applications and companies. Google used pOLED displays on the Pixel 2 XL, LG used them on theLG Velvet and several wearables,and Apple reportedly used LG pOLED displays on some Apple Watch models. LG"s pOLED displays seem to suffer from an increased risk of burn-in, as users of the Google Pixel 2 XL complained of burn-in after a few months of use.

To get to the resolution and size of a phone, an AMOLED screen (active matrix organic light emitting diode) is needed. Older, passive matrix OLED displays (PMOLED) require higher voltages for higher pixels/resolutions. The higher the voltage, the lower the screen"s lifetime.

Thin-film transistor (TFT) arrays used in modern active-matrix OLED displays control the charging of the display"s storage capacitors. These TFTs control current flow, resulting in more energy-efficient OLED panels than PMOLED displays. This allows a larger display size without compromising resolution, lifetime, or power consumption.

QLED isn"t related to OLED displays—despite what the name may suggest—but it"s often slated as a competitor to OLED, and it aims to replace the technology by targeting both OLED"s successes and failures. QLED stands for quantum dot light-emitting diode. The core principle of QLED technology is the same as a regular OLED. A backlight is passed through red, green, and blue subpixel layers to generate an image. However, the backlight isn"t one large, uniformly-lit layer. Instead, QLED displays use an array of tiny individually-controlled LEDs to supply the backlight. Using individually-controlled LEDs means the display can produce a more accurate image with a higher contrast.

Generally speaking, QLED displays have similar benefits to OLED displays—high peak brightness, high contrast, perfect blacks, and good saturation. Still, they lack some OLED advantages, like image retention and reduced overall and sustained brightness.

QLED is found in TVs and large computer monitors because that"s where it sees the most benefit. OLED displays in phones are small enough, bright enough, and cheap enough that QLED wouldn"t be able to compete or offer any practical benefit to the end user.

Display type is only one part of the puzzle.What use is exotic technology if it doesn"t make any difference to the end user? Smartphone manufacturers use many approaches to improve their displays. Let"s look at a few things you should look for apart from the display type.

Resolution is the number of pixels a screen has. It is usually written as a ratio: pixels on the long side by pixels on the short side, for example, 1920 x 1080. Most smartphone displays have a resolution between 720p (1280 x 720) on the low-end and 4k (3480 x 2160) on some Sony models. While 4k is excessive and rare for anything under 15 inches, 720p, 1080p, and 1440p are all common smartphone resolutions.

The ideal smartphone screen resolution depends on the screen size. A metric called pixels per inch (PPI) describes the display"s number of pixels in a vertical or horizontal inch. For a 6-inch display, you should aim for at least 1080p or above 350 PPI. This will ensure that the text is crisp.

A subpixel is one of the light-emitting parts of a pixel—in the case of most displays, these are red, blue, and green—that combine in different quantities to display various colors in an image. Although RGB subpixel layouts have been the prevalent option for a long time, some display manufacturers elect to use subpixel arrangements like BGR, PenTile, RGBG, and WRGB. The reason these subpixel layouts exist is to combat the various shortcomings of the display technology.

As with resolution, the subpixel layout can affect perceived image quality. Over the brief course of display history, manufacturers and designers have settled on RGB as a standard, meaning content is generally optimized for that layout. When manufacturers decided to invent new subpixel layouts, the perceived quality took a bit of a hit.

So why do manufacturers use odd-pixel layouts? It depends on the manufacturer and its goals. Samsung uses PenTile displays, which use RGBG instead of RGB subpixels, to combat image retention on its AMOLED displays. WRGB displays add a separate white subpixel to boost brightness on OLED displays—a technology that is otherwise notoriously dim.

There are reasons for these odd layouts. PenTile, for example, increases the number of green subpixels to reduce the effect of burn-in and increase panel lifespan. Still, many people are sensitive to the decreased resolution and clarity that often results from unorthodox subpixel layouts. Part of these resolution problems lies in subpixel antialiasing, which works on a subpixel basis to smooth out text and on-screen elements. Some do this better than others, which is why an iPhone 13"s screen seems sharper than the competition. However, even Samsung acknowledges that PenTile layouts suffer in terms of resolution and clarity.

Refresh rate is the number of times per second a display refreshes, and higher refresh rates mean motion and animations look smoother. Generally, 60Hz is the lowest commonly-found refresh rate and is perfectly serviceable. Many modern flagship phones and a few mid-range phonesoffer 90Hz, 120Hz, 144Hz, and even 240Hz displays.

Response times on OLED displays are generally lower, meaning displays can reach these high refresh rates and look better at these higher refresh rates thanks to the reduced ghosting.

Smartphones are often used outside in bright sunlight, so display brightness is a huge factor. Display brightness is measured in nits or cd/m². Peak brightness is the momentary maximum brightness of a small portion of a screen, while sustained brightness is a more realistic representation of the brightness of the whole display. Aim for above 600 nits of sustained brightness since anything below may cause legibility issues in bright conditions. On the other hand, brightness is measured logarithmically, not linearly, meaning 1,200 nits is only twice as bright as 300 nits. This is important since many manufacturers lean heavily on high brightness metrics as a marketing point.

Display specifications are no different. While it is true that OLED displays may be the best option for some people, they command a premium, and a lot of people wouldn"t notice the difference.

Brightness, refresh rate, and resolution are all key factors, and performance as a whole should be the determining factor in selecting a display, not the shiny new technology involved. If you"re looking for a phone with an OLED display and a high refresh rate, check out the best Android phones you can buy.

Smartphone display technology hasn"t changed for a while. However, with the advent of high refresh rates, we now get a chance to experience a smoother scrolling experience than ever before.

But, your smartphone refreshing 90 times or even 120 times per second can take a hard toll on your battery life. That"s where LTPO display technology comes in. Here"s everything you need to know about LTPO displays.

LTPO stands for low-temperature polycrystalline oxide. However, the full name doesn"t reveal much about the technology. LTPO is a backplane technology for OLED displays that allows displays to change the refresh rate dynamically depending on various conditions. Conditions, in this case, refer to what the user is doing.

For instance, if you"re playing a highly intensive game like Call of Duty Mobile, your screen needs to keep up with the rapid motions. In that case, an LTPO display will crank the refresh rate up to meet your needs. When you stop gaming and start doing the usual mundane things like scrolling through social media, you don"t need higher refresh rates. The display will therefore reduce the refresh rate.

LTPO technology has become the norm for flagship phones. The OnePlus 9 Pro and Samsung Galaxy S21 Ultra were some of the first smartphones with this technology. To demonstrate how this works, let"s use the OnePlus 9 Pro as an example.

Its 120Hz 6.7-inch AMOLED panel dynamically refreshes between 1Hz and 120Hz. It uses the full 120Hz when doing active things and switches to 24Hz while watching videos. And if you"re viewing a photo or reading text, the display lowers the refresh rate further to 1Hz.

Typical AMOLED displays use low-temperature polycrystalline silicon (LTPS) in the thin film transistors (TFTs), which make up the display"s backplane. On the other hand, LTPO AMOLED panels use a combination of LTPS TFTs to take care of switching circuits and a different material for driving the display. This is what enables LTPO panels to vary the refresh rate dynamically.

In the case of Apple, it uses LTPS TFTs in combination with Indium Gallium Zinc Oxide (IGZO) TFTs. Samsung also has its proprietary technology for LTPO AMOLED panels using a combination of LTPS TFTs and Hybrid-oxide and Polycrystalline silicon (HOP).

After high-refresh-rate smartphone displays became a reality, smartphone companies stumbled across one issue—reduced battery life. While smartphones typically have poor battery life, cranking up the refresh rate to 90Hz, 120Hz, or even 144Hz means that screen time takes a beating.

Companies came up with LTPO technology to solve this problem by variably changing the refresh rate. As you might expect, high refresh rates consume more battery, and lower numbers translate to less battery use. By dynamically changing the refresh rate, OLED displays cut down power consumption.

In short, LTPO AMOLED panels are better than AMOLED. When shopping for a flagship phone, you"ll notice that some have AMOLED displays while others have LTPO AMOLED displays. It isn"t the same thing.

Although AMOLED panels are more power-efficient than their LCD counterparts, slapping a high refresh rate on top takes a toll on their efficiency. LTPO is an improvement to this, and it allows AMOLED panels to use high refresh rates and still be power efficient.

LTPO is a backplane technology for AMOLED which helps the best screen technology unlock a new capability of refreshing your display dynamically. That helps companies incorporate high refresh rate displays without compromising on battery life.

That"s all well and good, but it does come at a cost. In 2022, LTPO AMOLED displays still live in the premium segment of the smartphone market. However, as with all other newer technologies, it should trickle down to the rest of the market with time. But LTPO is not just available on smartphones. You"ll also find it in Apple"s Watch Series 5 and later.

Although LTPO tech on a smartphone first came into notice with Samsung Galaxy Note 20 Ultra, lately, we have seen this being adopted by several brands. It brings in several big and small refinements over the traditional technology used for the display.

You may hear it under different names like HOP (hybrid oxide and polycrystalline silicon) or ProMotion. But, it is LTPO, which Apple and Samsung have used on their smartwatches for a couple of years, and is now being used on phones.

LTPO, which stands for low-temperature polycrystalline oxide, is shaping up to be the next-generation technology for premium phones and wearables. It basically combines LTPS and IGZO for the display backplane. Let us explain.

Every AMOLED display has a backplane that determines when individual pixels turn on and how bright they glow. Most backplanes use two separate transistors (TFTs) – one for switching on a pixel (Switching TFTs) and one for maintaining its brightness (driving TFTs). The Driving TFT is also accompanied by a Capacitor that samples and holds a voltage to uniformly drive a pixel brightness.

LTPO displays use faster LTPS for switching circuits and more power-efficient IGZO material for driving circuits (more on that in a bit). Faster LTPS switching circuits make dynamically changing refresh rates possible (VRR on phones) and power-efficient IGZO driving TFTs help to reduce power consumption by 5 to 20 percent.

Thus LTPO displays combine the benefits of both IGZO and LTPS backplanes. These displays can quickly switch between different refresh rates in a power-efficient manner and thus make VRR possible. LTPO panels can reduce power consumption by 5 to 20 percent.

As described above, each AMOLED pixel comprises of two Thin Film Transistors (TFT)- Driving TFT and Switching TFT- and one Capacitor. In an LTPO display, the switching circuits use LTPS TFT and driving circuits use IGZO TFT.

Amorphous Silicon (a-Si) TFT technology used to be dominant for display backplanes. With a need for high resolution and brighter screens, the industry shifted to LTPS TFT backplanes (for both OLED and LCD), and then the need for higher resolution and high-refresh-rate brought in more complicated IGZO TFT (Oxide TFT) panels.

IGZO (indium gallium zinc oxide) backplane technology or transistors used in backplanes that are often used for IPS LCD displays. IGZO transistors are transparent and thus IGZO backplane displays require less backlight power and consume less power. Electron Mobility of IGZO is as high as LTPS and these displays are more touch-sensitive (we are guessing the use of IGZO in Samsung Galaxy Note20 Ultra’s display plays a major role in reducing S Pen latency to 9ms).

So, the LTPO display combines the benefits of both LTPS and IGZO resulting in a more responsive screen that consumers lesser power than conventional LTPS screens. As stated above, in LTPO panels, the switching circuits use LTPS TFTs and the driving TFTs use IGZO materials.

As we discussed a while back, phones don’t have a true variable refresh rate. The biggest power draw in current high refresh rate phones are the display panel and display driver ICs.

Most modern phones keep refreshing at set frequencies or switching between different frequency presets even while displaying static content. DDICs working this way have to work harder and naturally waste more power.

Android phones like ROG Phone 3, OnePlus 8 Pro, and Galaxy S20 do have variable or adaptive refresh rate modes implemented on a software level. In such modes, the displays can change refresh rate but only to certain predefined settings – 720@60Hz, 1080@60hz, 1080@90Hz, etc.

The Galaxy Note 20 Ultra, on the other hand, brought in a true variable refresh rate. The display refresh could be as low as 10Hz while reading articles or vary from 30 to 120Hz while playing games.

TFT is an abbreviation for Thin Film Transistor, a flat panel display used to improve the operation and utility of LCD screens. In order to portray an appearance to the audience, a liquid crystal display (LCD) utilizes a crystalline-filled fluid to modify rear lighting polarized origin through the use of an electromagnetic force among two relatively thin metal wires such as indium oxide (ITO). However, color TFT displays are associated with this method, which can be employed in both divided and pixelated display systems.

With motion pictures displayed on an LCD, the intrinsic sluggish rate of increase between liquid phases over a significant number of pixel components can be an issue due to capacitance impacts, which can create a blurring of the visuals. Placing a high-velocity LCD control device inside the formation of a thin-film transistor immediately next to the cell component just on a glass screen, the issue of LCD picture speed may be substantially improved, and image blur can be eliminated for all useful purposes entirely.

Organic light-emitting diodes (AMOLEDs) are a type of flat light-emitting advanced technologies that are created by interspersing a succession of organic thin sheets over two conducting conductors. An electrical charge causes a brilliant light to be produced when the current flows. AMOLED displays are light-emitting screens that do not require a backlight, making them thinner and more energy-efficient than liquid crystal displays (LCDs) (which will need a white backlight).

AMOLED displays are not only thin and fuel-intensive, but they also deliver the highest image quality available, so they can be made translucent, elastic, bendable, or even rollable and stretchy in the future, allowing for a variety of applications. AMOLEDs are a revolutionary technology in terms of display devices! It is possible to create an AMOLED by sandwiching a sequence of thin films across phase conductors. Electric charge causes a brilliant light to be emitted when the current flows through the coil.

The color display is fantastic. Color intensity, sharpness, and luminance settings that are second to none and can be customized to meet the needs of any application.

Half-Life has been expanded. TFT displays have a far longer half-life than its LED equivalents, and they are available in a number of sizes, which might have an effect on the device"s half-life based on the phone"s usage as well as other variables. Touch panels for TFT screens can be either resistant or capacitance in nature.

Due to the apparent glass panels, there is limited functionality. For instance, there are ineffective for outdoor use because the glass can display glares from its natural lighting)

They rely on backlight to give illumination rather than generating their own light. Hence they require constructed light-creating diodes (LEDs) in their backlit display framework to ensure enough brightness.

Backlighting is unnecessary for AMOLEDs. LCDs produce images by selectively blocking parts of the illumination, whereas AMOLEDs produce light. AMOLEDs utilize less energy than LCDs since they don"t need backlighting. This is critical for battery-powered devices such as phones.

While AMOLED light-emitting sheets are lightweight, the substrate can also be elastic rather than stiff. AMOLED films are not limited to glass-like LEDs and LCDs.

AMOLEDs offer 170-degree ranges of vision. LCDs operate by obscuring the light. Hence they have intrinsic viewing obstacles. In addition, AMOLEDs have a substantially wider viewing spectrum.

AMOLEDs outperform LEDs. Since AMOLED organic coatings are less than LED inorganic crystal levels, AMOLED conducting and particle emitters layers can just be multi-layered. Also, LEDs and LCDs need glass backing, which absorbs light. AMOLEDs don"t need it.

AMOLEDs seem to be simpler to implement and larger. AMOLEDs are constructed of polymers and may be produced into big sheets. It takes a lot of extra liquid crystals to build and set down.

While red and green AMOLED sheets have a greater lifespan (46,000 to 230,000 hours), azure compounds have significantly shorter longevity (up to roughly 14,000 hours).

Due to the fact that AMOLED displays inherently emit illumination, they do not need a backlight when used on a monitor screen. Conversely, LCDs require backlights since the liquid crystals themselves are incapable of producing light under their own. Direct light emission from AMOLED displays also allows for the developing of lightweight display devices than others using TFT LCDs.

LCD displays have a higher brightness than AMOLED panels. This is owing to the LCD"s usage of led backlight, which may provide a brilliant illumination of the entire display. Despite the fact that AMOLEDs produce high levels of brilliance from their illumination, they will never be able to match the intensity of LCD lighting.

LCD screens use less power than AMOLED displays, which provides a slight advantage. The amount of energy consumed by AMOLED displays is dependent on the intensity of the screen. Lowered luminance results in lower energy usage, however, it might not be the best solution because the contrast would suffer as a result of the decreased brightness. In some situations, such as when to use an AMOLED device in direct sunlight, it is not an optimal situation.

However, the backlit keys of TFT displays account for the majority of their power usage. TFT screens" efficiency is considerably improved when the backlight is set to a lesser brightness level than the default setting. For example, replacing the light of an LCD TV with just an Led flash will have no effect on the image quality, but will result in lower power usage than replacing the light of an AMOLED TV.

With the exception of phones, numerous other technologies make use of displays to allow customers to engage in direct communication with them. To determine whether or not TFT LCD will be able to withstand the development of AMOLED innovation, we should first review the benefits of LCD technology. The backlighting quality ensures that whites are strong and brightness is superb but will deplete a battery much more quickly than just an AMOLED display. Furthermore, the cost of LCD screens is a considerable consideration. In addition to being less expensive and more easily accessible, they are produced in standard industry sizes, allowing them to be purchased for innovative products with relative ease.

There is no doubt that Galaxy Tab S is Samsung’s best tablet yet. It is not only Samsung’s thinnest and lightest tablet to date, but it also houses the powerful Exynos 5 Octa processor. However, the most eye-catching thing about the Galaxy Tab S is the most advanced Super AMOLED displayon the market. Here is why the Super AMOLED makes Galaxy Tab S turns up the color better compare to conventional tablets.

AMOLED screens and LCDs produce colors differently. LCDs can’t emit light on their own. They need color filters, a backlight unit, a light diffuser for uniformity and other layers to create images. All these layers block out some of the light that would otherwise reach the eye.  Plus, the backlight has to remain on constantly to produce the image, so it draws more power. It also tends to filter colors.

On the other hand, AMOLED is an emissive technology. So there’s nothing to block the light output of the display. AMOLED also displays direct, unimpeded colors and detail. Therefore, every single pixel of the AMOLED is vivid and real.

Moreover, since the emissive technology’s simpler structure also allows the Galaxy Tab S to be slimmer and lighter. It also allows lower power consumption. For example, Galaxy Tab S can feature the Ultra Power Saving Mode, because it can only be achieved with Super AMOLEDs.

Galaxy Tab S probably is the only tablet that shows the true colors to nature. This is important for viewing content, but it is also important for content creators. For content creators, it’s important to have a wide choice of colors to work with and a display that accurately reproduces those colors for high quality content.

The chromaticity diagram illustrates how the three additive primary colors — Red, Green and Blue — combine to express the spectrum we see on a display. The smaller triangle represents a standard RGB color gamut called sRGB, which most LCD screens support. The larger triangle is the AdobeRGB gamut, the standard color space for professional printing and photography.

LCD covers only about 70% of the AdobeRGB color spectrum, leaving a lot of potential unfulfilled. By contrast, Samsung AMOLED display covers more than 90% of AdobeRGB. That means — with AMOLED – Galaxy Tab S reveals about 20% more of the color spectrum our eyes expect to see. This wider color expression extends into much richer cyans and greens, in particular.

But color accuracy appeals to more than just the artistic set. It has practical implications as well. Let’s say you’re buying a camera for better option with colors. You may have times where you have been disappointed with some cameras not having the ability to present the true colors of the sky or the ocean on TFT LCD. But, you could expect to see the real colors of nature on the Galaxy Tab S thanks to the Super AMOLED display.

For example, AMOLEDs express the deepest black achievable on a display because it simply can turn off the pixels. When compared to conventional LCD tablets, the contrast difference is almost 100 times better, achieving the true black. With the deeper blacks, you get so much more detail, even in the darkest areas in an image.

Because of the high contrast level, it also offers a wider viewing angle. Viewing angle represents the angle you can view without any loss of picture quality. Obviously, more viewing angle, greater the flexibility of the placement it can offer. The Super AMOLED screens have a 180-degree viewing angle, which means you can pretty much view it from any angle or view it with more than one people without any discomfort.

Samsung believes a display must adapt to both content and viewing environments. Therefore, Samsung developed screen technology – Samsung’s Adaptive Display — to automatically optimize the gamma, brightness, contrast, and sharpness for these 7 key native apps, which was introduced in the Galaxy S5.

Especially for the browser and e-book, the RGB sensor detects and analyzes ambient light and then adjusts the white balance of the screen to improve the overall visibility of the display.

Let’s say you’re reading in an airport flooded by fluorescent light — or home at night with a reading lamp that’s as far from natural light as you can get — Adaptive Display will provide an improved and more pleasing viewing experience for your situation.

For a mobile device, it is important that users can use the device indoors and outdoors. However, in the case of tablets, until the Tab S that’s not been the case, because it just wasn’t satisfying enough to read or watch movies in bright sunlight. Samsung made sure that this wasn’t the case for the Galaxy Tab S; the outdoor visibility has significantly improved.

Second, the AMOLED display is less reflective than an LCD screen – in fact, 40% less reflective. So if you’re reading an e-book in the park on a bright sunny day, the experience is even more enjoyable because you can actually see what’s on the screen clearly.

Picture engine plays a significant role in the visibility as well. Galaxy Tab S uses Samsung’s mDNIe picture engine, which is the same technology found in our industry-leading Samsung TVs, to create impressive picture quality.

We think we pretty much covered all the essentials of the Galaxy Tab S’s Super AMOLED display. Actually, we forgot to mention that Super AMOLED displays provide fast in-display response time, which makes it perfect for watching movies, sports, or playing games under any temperatures. (Generally, LCD’s motion delay (Shadow effect) increases as the temperature goes down.)

Alright, that is really it for the essentials. At the Samsung Galaxy Premiere 2014, Galaxy Tab S was described as a ‘personal visual device optimized for content consumption.’ As we went over the some of the details of the advantages of the Super AMOLED, we hope the description makes more sense. Actually, it will make more sense when you get to enjoy something like the access to 15,000 Marvel Comics, which comes for 3 months free if you are a Galaxy Tab S user. We only have three words left, check it out.

A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directlybacklight or reflector to produce images in color or monochrome.seven-segment displays, as in a digital clock, are all good examples of devices with these displays. They use the same basic technology, except that arbitrary images are made from a matrix of small pixels, while other displays have larger elements. LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement. For example, a character positive LCD with a backlight will have black lettering on a background that is the color of the backlight, and a character negative LCD will have a black background with the letters being of the same color as the backlight. Optical filters are added to white on blue LCDs to give them their characteristic appearance.

LCDs are used in a wide range of applications, including LCD televisions, computer monitors, instrument panels, aircraft cockpit displays, and indoor and outdoor signage. Small LCD screens are common in LCD projectors and portable consumer devices such as digital cameras, watches, calculators, and mobile telephones, including smartphones. LCD screens have replaced heavy, bulky and less energy-efficient cathode-ray tube (CRT) displays in nearly all applications. The phosphors used in CRTs make them vulnerable to image burn-in when a static image is displayed on a screen for a long time, e.g., the table frame for an airline flight schedule on an indoor sign. LCDs do not have this weakness, but are still susceptible to image persistence.

Most color LCD systems use the same technique, with color filters used to generate red, green, and blue subpixels. The LCD color filters are made with a photolithography process on large glass sheets that are later glued with other glass sheets containing a TFT array, spacers and liquid crystal, creating several color LCDs that are then cut from one another and laminated with polarizer sheets. Red, green, blue and black photoresists (resists) are used. All resists contain a finely ground powdered pigment, with particles being just 40 nanometers across. The black resist is the first to be applied; this will create a black grid (known in the industry as a black matrix) that will separate red, green and blue subpixels from one another, increasing contrast ratios and preventing light from leaking from one subpixel onto other surrounding subpixels.Super-twisted nematic LCD, where the variable twist between tighter-spaced plates causes a varying double refraction birefringence, thus changing the hue.

The optical effect of a TN device in the voltage-on state is far less dependent on variations in the device thickness than that in the voltage-off state. Because of this, TN displays with low information content and no backlighting are usually operated between crossed polarizers such that they appear bright with no voltage (the eye is much more sensitive to variations in the dark state than the bright state). As most of 2010-era LCDs are used in television sets, monitors and smartphones, they have high-resolution matrix arrays of pixels to display arbitrary images using backlighting with a dark background. When no image is displayed, different arrangements are used. For this purpose, TN LCDs are operated between parallel polarizers, whereas IPS LCDs feature crossed polarizers. In many applications IPS LCDs have replaced TN LCDs, particularly in smartphones. Both the liquid crystal material and the alignment layer material contain ionic compounds. If an electric field of one particular polarity is applied for a long period of time, this ionic material is attracted to the surfaces and degrades the device performance. This is avoided either by applying an alternating current or by reversing the polarity of the electric field as the device is addressed (the response of the liquid crystal layer is identical, regardless of the polarity of the applied field).

Displays for a small number of individual digits or fixed symbols (as in digital watches and pocket calculators) can be implemented with independent electrodes for each segment.alphanumeric or variable graphics displays are usually implemented with pixels arranged as a matrix consisting of electrically connected rows on one side of the LC layer and columns on the other side, which makes it possible to address each pixel at the intersections. The general method of matrix addressing consists of sequentially addressing one side of the matrix, for example by selecting the rows one-by-one and applying the picture information on the other side at the columns row-by-row. For details on the various matrix addressing schemes see passive-matrix and active-matrix addressed LCDs.

LCDs are manufactured in cleanrooms borrowing techniques from semiconductor manufacturing and using large sheets of glass whose size has increased over time. Several displays are manufactured at the same time, and then cut from the sheet of glass, also known as the mother glass or LCD glass substrate. The increase in size allows more displays or larger displays to be made, just like with increasing wafer sizes in semiconductor manufacturing. The glass sizes are as follows:

Until Gen 8, manufacturers would not agree on a single mother glass size and as a result, different manufacturers would use slightly different glass sizes for the same generation. Some manufacturers have adopted Gen 8.6 mother glass sheets which are only slightly larger than Gen 8.5, allowing for more 50 and 58 inch LCDs to be made per mother glass, specially 58 inch LCDs, in which case 6 can be produced on a Gen 8.6 mother glass vs only 3 on a Gen 8.5 mother glass, significantly reducing waste.AGC Inc., Corning Inc., and Nippon Electric Glass.

The origins and the complex history of liquid-crystal displays from the perspective of an insider during the early days were described by Joseph A. Castellano in Liquid Gold: The Story of Liquid Crystal Displays and the Creation of an Industry.IEEE History Center.Peter J. Wild, can be found at the Engineering and Technology History Wiki.

In 1922, Georges Friedel described the structure and properties of liquid crystals and classified them in three types (nematics, smectics and cholesterics). In 1927, Vsevolod Frederiks devised the electrically switched light valve, called the Fréedericksz transition, the essential effect of all LCD technology. In 1936, the Marconi Wireless Telegraph company patented the first practical application of the technology, "The Liquid Crystal Light Valve". In 1962, the first major English language publication Molecular Structure and Properties of Liquid Crystals was published by Dr. George W. Gray.RCA found that liquid crystals had some interesting electro-optic characteristics and he realized an electro-optical effect by generating stripe-patterns in a thin layer of liquid crystal material by the application of a voltage. This effect is based on an electro-hydrodynamic instability forming what are now called "Williams domains" inside the liquid crystal.

In 1964, George H. Heilmeier, then working at the RCA laboratories on the effect discovered by Williams achieved the switching of colors by field-induced realignment of dichroic dyes in a homeotropically oriented liquid crystal. Practical problems with this new electro-optical effect made Heilmeier continue to work on scattering effects in liquid crystals and finally the achievement of the first operational liquid-crystal display based on what he called the George H. Heilmeier was inducted in the National Inventors Hall of FameIEEE Milestone.

The idea of a TFT-based liquid-crystal display (LCD) was conceived by Bernard Lechner of RCA Laboratories in 1968.dynamic scattering mode (DSM) LCD that used standard discrete MOSFETs.

On December 4, 1970, the twisted nematic field effect (TN) in liquid crystals was filed for patent by Hoffmann-LaRoche in Switzerland, (Swiss patent No. 532 261) with Wolfgang Helfrich and Martin Schadt (then working for the Central Research Laboratories) listed as inventors.Brown, Boveri & Cie, its joint venture partner at that time, which produced TN displays for wristwatches and other applications during the 1970s for the international markets including the Japanese electronics industry, which soon produced the first digital quartz wristwatches with TN-LCDs and numerous other products. James Fergason, while working with Sardari Arora and Alfred Saupe at Kent State University Liquid Crystal Institute, filed an identical patent in the United States on April 22, 1971.ILIXCO (now LXD Incorporated), produced LCDs based on the TN-effect, which soon superseded the poor-quality DSM types due to improvements of lower operating voltages and lower power consumption. Tetsuro Hama and Izuhiko Nishimura of Seiko received a US patent dated February 1971, for an electronic wristwatch incorporating a TN-LCD.

In 1972, the concept of the active-matrix thin-film transistor (TFT) liquid-crystal display panel was prototyped in the United States by T. Peter Brody"s team at Westinghouse, in Pittsburgh, Pennsylvania.Westinghouse Research Laboratories demonstrated the first thin-film-transistor liquid-crystal display (TFT LCD).high-resolution and high-quality electronic visual display devices use TFT-based active matrix displays.active-matrix liquid-crystal display (AM LCD) in 1974, and then Brody coined the term "active matrix" in 1975.

In 1972 North American Rockwell Microelectronics Corp introduced the use of DSM LCDs for calculators for marketing by Lloyds Electronics Inc, though these required an internal light source for illumination.Sharp Corporation followed with DSM LCDs for pocket-sized calculators in 1973Seiko and its first 6-digit TN-LCD quartz wristwatch, and Casio"s "Casiotron". Color LCDs based on Guest-Host interaction were invented by a team at RCA in 1968.TFT LCDs similar to the prototypes developed by a Westinghouse team in 1972 were patented in 1976 by a team at Sharp consisting of Fumiaki Funada, Masataka Matsuura, and Tomio Wada,

The first color LCD televisions were developed as handheld televisions in Japan. In 1980, Hattori Seiko"s R&D group began development on color LCD pocket televisions.Seiko Epson released the first LCD television, the Epson TV Watch, a wristwatch equipped with a small active-matrix LCD television.dot matrix TN-LCD in 1983.Citizen Watch,TFT LCD.computer monitors and LCD televisions.3LCD projection technology in the 1980s, and licensed it for use in projectors in 1988.compact, full-color LCD projector.

Hitachi also improved the viewing angle dependence further by optimizing the shape of the electrodes (Super IPS). NEC and Hitachi become early manufacturers of active-matrix addressed LCDs based on the IPS technology. This is a milestone for implementing large-screen LCDs having acceptable visual performance for flat-panel computer monitors and television screens. In 1996, Samsung developed the optical patterning technique that enables multi-domain LCD. Multi-domain and In Plane Switching subsequently remain the dominant LCD designs through 2006.South Korea and Taiwan,

In 2007 the image quality of LCD televisions surpassed the image quality of cathode-ray-tube-based (CRT) TVs.LCD TVs were projected to account 50% of the 200 million TVs to be shipped globally in 2006, according to Displaybank.Toshiba announced 2560 × 1600 pixels on a 6.1-inch (155 mm) LCD panel, suitable for use in a tablet computer,

Since LCDs produce no light of their own, they require external light to produce a visible image.backlight. Active-matrix LCDs are almost always backlit.Transflective LCDs combine the features of a backlit transmissive display and a reflective display.

CCFL: The LCD panel is lit either by two cold cathode fluorescent lamps placed at opposite edges of the display or an array of parallel CCFLs behind larger displays. A diffuser (made of PMMA acrylic plastic, also known as a wave or light guide/guiding plateinverter to convert whatever DC voltage the device uses (usually 5 or 12 V) to ≈1000 V needed to light a CCFL.

EL-WLED: The LCD panel is lit by a row of white LEDs placed at one or more edges of the screen. A light diffuser (light guide plate, LGP) is then used to spread the light evenly across the whole display, similarly to edge-lit CCFL LCD backlights. The diffuser is made out of either PMMA plastic or special glass, PMMA is used in most cases because it is rugged, while special glass is used when the thickness of the LCD is of primary concern, because it doesn"t expand as much when heated or exposed to moisture, which allows LCDs to be just 5mm thick. Quantum dots may be placed on top of the diffuser as a quantum dot enhancement film (QDEF, in which case they need a layer to be protected from heat and humidity) or on the color filter of the LCD, replacing the resists that are normally used.

WLED array: The LCD panel is lit by a full array of white LEDs placed behind a diffuser behind the panel. LCDs that use this implementation will usually have the ability to dim or completely turn off the LEDs in the dark areas of the image being displayed, effectively increasing the contrast ratio of the display. The precision with which this can be done will depend on the number of dimming zones of the display. The more dimming zones, the more precise the dimming, with less obvious blooming artifacts which are visible as dark grey patches surrounded by the unlit areas of the LCD. As of 2012, this design gets most of its use from upscale, larger-screen LCD televisions.

RGB-LED array: Similar to the WLED array, except the panel is lit by a full array of RGB LEDs. While displays lit with white LEDs usually have a poorer color gamut than CCFL lit displays, panels lit with RGB LEDs have very wide color gamuts. This implementation is most popular on professional graphics editing LCDs. As of 2012, LCDs in this c