diy alternatives to lcd displays brands

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Microcontrollers (MCUs) have a few display options available. A Liquid Crystal Display (LCD) is a common, low-cost option that uses a backlight made of either cold-cathode fluorescent tubes (CCFL) or light emitting Diodes (LEDs). The term “LED display” actually refers to an LCD display with LED backlighting, and thus is the same thing as an “LCD Display.” Another display option is the Organic Light-Emitting Device (OLED), which emits light in a manner similar to LEDs and therefore does not require a separate backlight. An LCD has many more components than OLED displays, and for example might include a light guide panel and a diffuser to evenly disperse the light emitted from the backlight across the whole screen, liquid crystal shutters that switch the light on and off throughout the display, polarizing film and other components to drive the LCD shutters and reflect the backlight (although manufacturing components and techniques may vary).

Many microcontrollers have built-in circuitry for display drivers so that the MCU can directly control the display or segments in a display. Controlling a display with an MCU is relatively easy if the display is a simple segment-driven (e.g., text-only), monochrome display. Several MCUs include a software library for operating LCD displays, which will be driver-specific. Find the software library that matches the hardware that drives the LCD display. Sometimes off-brand hardware display drivers will be compatible with other display drivers that are already in wide use so you can still use the software library for the compatible driver. Expect to use several pins for data and power for the backlight that should be included with a segment-driven display. According to the Arduino site, which offers LiquidCrystal software libraries, the Hitachi HD44780 driver has a 16-pin interface. Some MCUs use SPI or I2C to drive an LCD or OLED display. Small OLED displays have become fairly affordable and make sense if you have a strict power budget. See Table 1 for comparison of OLED and LCD to make the best choice for your design.

Improving with the maturation of the technology. Up to a 50% loss in brightness can occur over a lifespan of 10 – 50 years, depending on manufacturer and hours of use per day.

PROs: LCD displays are thicker and heavier than OLED displays and consume more power than OLEDs, due to the need for a backlight. OLEDs have self-emitting light and do not require backlights. However, OLED displays do not put out as much light as an LCD/LED display. (E.g., all things being equal, an OLEDdisplay as a flashlight is not as effective as your smartphone’s LED display screen in a dark room.) Without a backlight, OLED displays do not leak light when black areas are shown on the OLED display, unlike LCD displays. With OLED displays, each pixel that is set to black is going to be really black. OLEDs, being self-emitting light sources, are also controllable down to the pixel. LCD displays cannot control each pixel, but control in regions. OLED technology is newer than LCD and therefore more expensive, but prices are dropping as OLED technology matures. OLED has a superior viewing angle; the picture does not diminish as you view the screen to 80 degrees or more off center, whereas LCDs lose visibility at around 50 degrees.

CONs: OLED displays can lose their brightness over long-term use, but the technology is improving with time. It is also technically possible for OLEDs to suffer long-term image retention (also known as “burn-in,” an inaccurate term for OLEDs borrowed from CRTs) under extreme conditions. However, OLEDs do not use phosphor coating as CRTs did, so burn-in is not necessarily permanent. The potential for burn-in makes OLED displays used for digital signage a poor candidate, especially if the display image is extremely bright, high-contrast, and never varies (at the pixel level), or if the OLED display is not set up with some screen preservation features. LG claims that OLED TV screens come with built-in features to avoid burn-in, such as pixel-shifting an image, termed “Screen Shift” by LG, which “moves the screen slightly at regular intervals to preserve picture quality.” LG also claims that the quality of an OLED image can be preserved “by resetting the TV so it clears the pixels.”[i] Unlike CRTs, for which long-term image retention is permanent once it’s there (and monochromatic), OLED screens experience an erasable, multi-color long term image retention. Therefore, OLED “burn-in” isn’t the same kind of permanent burn-in that CRTs can experience. Long-term image retention on an OLED screen can be “erased” by playing varying content on the OLED screen for a while.[ii] DIY digital signage with a static image on an OLED display is not recommended, however. Major manufacturers like Samsung and LG offer OLED displays for digital signage but include features to avoid long-term image retention.

Hi, I just received my first ebike, RadRunner1, I would like to replace the LED display to an LCD display. The upgrade LCD they sell at Radpowerbikes.ca is $130+tax+shipping which is around $160. I"ve checked aliexpress and they sell a whole bunch of LCD displays for cheaper. Anyone know the model of the controller on the Radrunner1 (Canadian version)? Thanks

Though transparent display technology is often found in liquor store coolers, it’s now spreading to more and more industries. The newest trend in the product merchandising and trade show display circuit uses this technology for interactive digital display cases. The display cases and boxes feature front panels with translucent LCD screens and interior LED backlighting to make the graphics easily visible.

With LCD technology, merchandisers can choose any motion graphics or videos to play in beautiful full color and stunning detail on their displays. They can overlay text to describe the features of their product, show videos of the product in use, or any other multimedia content that helps you tell your product"s story. While these branded videos play on loop, viewers can still see the object showcased inside of the box as it is evenly illuminated by LED lights.

Vivid videos and multimedia splash across the overlay LCD screen, explaining the features and benefits of the product, while customers simultaneously view and admire the item behind the display!

Who this is for: A dual-monitor setup is usually the best option if you want to have a bunch of app windows open at once. But an ultrawide model might be a better choice if you need a ton of unbroken horizontal space, or you don’t want monitor bezels in between windows.

Why we like it: The Dell P3421W has a sturdy adjustable stand, lots of ports (including a USB-C port that can handle power, display, and data over a single cable), and a three-year warranty. And it has a built-in KVM switch that allows you to easily swap your keyboard, mouse, and video between two computers. The 1440p display has a 60 Hz refresh rate, which is great for typical office work, web browsing, and casual gaming.

Flaws but not dealbreakers: If you use your display in direct sunlight, this monitor might not be bright enough for you. It can also provide 65 W of power over USB-C, but some laptops require more. If you have a laptop with an Nvidia GeForce RTX GPU or an Intel Core i7 processor, you might need to keep the laptop plugged in to a separate charger or use a Thunderbolt dock that can provide the extra power.

Most ultrawide monitors are also curved. This design helps minimize viewing-angle problems—when you’re sitting centered, things on the far edges of the screen won’t look as washed out as they would on a flat display of a similar width. But this also makes ultrawide monitors inaccurate for precision tasks requiring straight lines, such as drawing, photo editing, or similar design work.

Smart displays can act as hubs for your smart home devices, like security cameras and bulbs, so you can control everything with your voice and quickly call up video feeds. And because they"re made to be displayed, you don"t have to get an extra stand—as you would if you wanted to use an iPad in this way, for example.

The biggest pro for me (Medea) is the ability to see and hear recipes when I"m getting my hands dirty in the kitchen. Before trying a smart display, I was scrolling through my phone with greasy fingers, continuously unlocking and locking it. Seeing the step-by-step instructions displayed prominently on the 10-inch screen of the Nest Hub Max in my kitchen is a step above what my smart speaker can do.

Better yet, if you connect your Google Photos account to Google-powered displays, you can cycle through your pictures and memories, like a slightly less sophisticated digital picture frame. (You can do this on Amazon"s smart displays too.)

The biggest con I found in almost all smart displays is the fact that they have to be plugged in. I"d love to be able to move my display around from room to room when I need to. If you think the same, and aren"t interested in buying a Portal from Facebook, take a gander at our favorite tablets.

If you have ever wondered what it took to make your own custom graphic LCD from scratch, this video from [Applied Science] is worth a watch. It’s concise and to the point, while still telling you what you need to know should you be interested in rolling your own. There is also a related video which goes into much more detail about experimenting with LCD technology.

[Applied Science] used microscope slides and parts purchased online to make an LCD that displays a custom graphic when activated. The only step that home experimenters might have trouble following is coating the glass slides with a clear conductive layer, which in the video is done via a process called sputtering to deposit a thin film. You don’t need to do this yourself, though. Pre-coated glass is readily available online. (Search for Indium-Tin Oxide or ‘ITO’ coated glass.)

The LCD consists of a layer of liquid crystal suspended between two layers of conductive glass. An electrical field is used to change the orientation of crystals in the suspension, which modulate the light passing through them. Polarizing filters result in a sharp contrast and therefore a visible image. To show a particular shape, some of the conductive coating is removed from one of the layers in the shape of the desired image. The process [Applied Science] uses to do this is nearly identical to etching a custom PCB.

Parts of LCD technology can be quite hackable. Neither of these videos are brand-new, either. Have any of you taken on the challenge of DIY LCD displays? We’ve seen experiments with electrochromatic glass using old LCD displays, as well as experiments in playing with polarized light to hide secret messages on LCD screens.

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The best portable monitor we"ve tested is the ASUS ProArt PA148CTV. It"s an okay choice if you want to use it for productivity and office work, but like most portable monitors, it doesn"t give you the same picture quality as a desktop monitor. However, it"s still good enough overall to have as a second display for your laptop. With a 1080p resolution and 14-inch screen, there"s enough space to see a full window, and the text clarity is excellent due to the high pixel density. It also has excellent accuracy before calibration, which is better than most portable monitors and good enough if your work requires accurate colors.

It"s a well-built monitor with a kickstand to adjust the angle of the screen. Connecting to it is easy as it has two USB-C ports that each support DisplayPort Alt Mode, and it even has a Micro-HDMI input which is ideal if your laptop doesn"t support USB-C. It also has a touch screen, but unfortunately, it isn"t that useful because it doesn"t feel responsive and doesn"t work with macOS devices.

Based in South Korea, Samsung has become one of the world"s leading electronic brands. Like many companies in this list, their monitors mainly focus on gaming. Their models are unique since they don"t primarily use IPS panels, as many have VA panels with a high contrast ratio and curved screen. Although VA panels look great in dark rooms, the main downside is that they have narrow viewing angles, which isn"t ideal for sharing your screen with others. They"ve even started including Mini LED backlighting on some models, which further improves the picture quality, peak brightness, and dark room performance. It helps that Samsung already produces TVs with this Mini LED technology, so they"ve become an industry leader for monitors with it.

Like with their TV lineup, Samsung offers the best features and performance with their high-end models like the Samsung LS32BG852NNXGO, and lower-end models tend to sacrifice features and performance for a lower cost. For example, the Samsung Odyssey Neo G7 S32BG75 is a step down from the Neo G8 and costs less, but it has a lower 165Hz refresh rate compared to 240Hz on the Neo G8. It means that Samsung"s best options are their high-end ones, as their budget displays, like the Samsung Odyssey G3 S24AG30, have limited performance.

There are plenty of new and confusing terms facing TV shoppers today, but when it comes down to the screen technology itself, there are only two: Nearly every TV sold today is either LCD or OLED.

The biggest between the two is in how they work. With OLED, each pixel provides its own illumination so there"s no separate backlight. With an LCD TV, all of the pixels are illuminated by an LED backlight. That difference leads to all kinds of picture quality effects, some of which favor LCD, but most of which benefit OLED.

LCDs are made by a number of companies across Asia. All current OLED TVs are built by LG Display, though companies like Sony and Vizio buy OLED panels from LG and then use their own electronics and aesthetic design.

So which one is better? Read on for their strengths and weaknesses. In general we"ll be comparing OLED to the best (read: most expensive) LCD has to offer, mainly because there"s no such thing as a cheap OLED TV (yet).

Take this category with a grain of salt. Both TV types are very bright and can look good in even a sunny room, let alone more moderate indoor lighting situations or the dark rooms that make TV images look their best. When it comes down to it, no modern TV could ever be considered "dim."

At the other side of light output is black level, or how dark the TV can get. OLED wins here because of its ability to turn off individual pixels completely. It can produce truly perfect black.

The better LCDs have local dimming, where parts of the screen can dim independently of others. This isn"t quite as good as per-pixel control because the black areas still aren"t absolutely black, but it"s better than nothing. The best LCDs have full-array local dimming, which provides even finer control over the contrast of what"s onscreen -- but even they can suffer from "blooming," where a bright area spoils the black of an adjacent dark area.

Here"s where it comes together. Contrast ratio is the difference between the brightest and the darkest a TV can be. OLED is the winner here because it can get extremely bright, plus it can produce absolute black with no blooming. It has the best contrast ratio of any modern display.

One of the main downsides of LCD TVs is a change in picture quality if you sit away from dead center (as in, off to the sides). How much this matters to you certainly depends on your seating arrangement, but also on how much you love your loved ones.

A few LCDs use in-plane switching (IPS) panels, which have better off-axis picture quality than other kinds of LCDs, but don"t look as good as other LCDs straight on (primarily due to a lower contrast ratio).

OLED doesn"t have the off-axis issue LCDs have; its image looks basically the same, even from extreme angles. So if you have a wide seating area, OLED is the better option.

Nearly all current TVs are HDR compatible, but that"s not the entire story. Just because a TV claims HDR compatibility doesn"t mean it can accurately display HDR content. All OLED TVs have the dynamic range to take advantage of HDR, but lower-priced LCDs, especially those without local-dimming backlights, do not. So if you want to see HDR content it all its dynamic, vibrant beauty, go for OLED or an LCD with local dimming.

In our tests comparing the best new OLED and LCD TVs with HDR games and movies, OLED usually looks better. Its superior contrast and lack of blooming win the day despite LCD"s brightness advantage. In other words LCD TVs can get brighter, especially in full-screen bright scenes and HDR highlights, but none of them can control that illumination as precisely as an OLED TV.

OLED"s energy consumption is directly related to screen brightness. The brighter the screen, the more power it draws. It even varies with content. A dark movie will require less power than a hockey game or ski competition.

The energy consumption of LCD varies depending on the backlight setting. The lower the backlight, the lower the power consumption. A basic LED LCD with its backlight set low will draw less power than OLED.

LG has said their OLED TVs have a lifespan of 100,000 hours to half brightness, a figure that"s similar to LED LCDs. Generally speaking, all modern TVs are quite reliable.

Does that mean your new LCD or OLED will last for several decades like your parent"s last CRT (like the one pictured). Probably not, but then, why would you want it to? A 42-inch flat panel cost $14,000 in the late 90"s, and now a 65-inch TV with more than 16x the resolution and a million times better contrast ratio costs $1,400. Which is to say, by the time you"ll want/need to replace it, there will be something even better than what"s available now, for less money.

OLED TVs are available in sizes from 48 to 88 inches, but LCD TVs come in smaller and larger sizes than that -- with many more choices in between -- so LCD wins. At the high end of the size scale, however, the biggest "TVs" don"t use either technology.

If you want something even brighter, and don"t mind spending a literal fortune to get it, Samsung, Sony, and LG all sell direct-view LED displays. In most cases these are

You can get 4K resolution, 50-inch LCDs for around $400 -- or half that on sale. It"s going to be a long time before OLEDs are that price, but they have come down considerably.

LCD dominates the market because it"s cheap to manufacture and delivers good enough picture quality for just about everybody. But according to reviews at CNET and elsewhere, OLED wins for overall picture quality, largely due to the incredible contrast ratio. The price difference isn"t as severe as it used to be, and in the mid- to high-end of the market, there are lots of options.

Lately, choosing a TV has become like walking into a candy store. There are so many TV technology options to choose from, and each of them seems just as good.

Then there are the technical terms to deal with, such as LED TV, LCD TV, QLED TV, UHD TV, OLED TV, and more. You might feel like you need to be a tech pro just to watch your favourite TV show in the evening or enjoy a game with your friend.

First, an important thing to understand is that the LED (Light Emitting Diode) monitor is an improvised version of the LCD (Liquid Crystal Display). This is why all LED monitor is LCD in nature, but not all LCDs are LED monitors.

LCD technology revolutionized monitors by using cold cathode fluorescent lamps for backlighting to create the picture displayed on the screen. A cold cathode fluorescent lamp (CCFL) is a tiny fluorescent bulb. In the context of this article, LCDs refer to this traditional type of CCFL LCD TVs.

LED monitors took the old technology a step further by replacing the fluorescent bulbs with LED backlight technology. And OLED (organic light-emitting diode) technology improves it even further by eliminating the need for backlighting.

This turns a single monitor into a modular assortment of countless light-emitting diodes. Additionally, this expands how big the monitor can be without blowing up the cost exponentially.

Since LEDs replace fluorescent bulbs with light-emitting diodes, LED TVs are more energy-efficient than LCDs. A 32-inch LED TV screen consumes 10 watts less power than the same size LCD screen. The difference in power consumption increases as the size of the display increases.

Light-emitting diodes are considerably smaller than fluorescent lamps used in LCD monitors. Fluorescent lamps have a considerable thickness, but the thickness of diodes is next to none. Moreover, countless diodes are assembled in the same plane, so the thickness of the array isn’t increased no matter how many diodes are present.

Edge-lit LEDs have a slight drawback in viewing angle compared to LCDs, because of the position of the light source. However, direct-view LEDs offer a better angle for viewing than LCDs as the light source is evenly spread on the screen.

This is the time it takes to shift from one colour to another. Response times are generally measured in milliseconds (ms). The shorter the time to respond, the better the quality of the images produced.

Since LED displays use full-array LED backlighting rather than one big backlight, LED TVs offer significantly better contrast than LCDs. LCD backlighting technology only shows white and black, but LED backlighting can emit the entire RGB spectrum, thereby providing a deeper RGB contrast.

If you wonder which display will last longer, this debate is also won by LED displays. LED televisions have a longer lifespan of 100,000 hours on average, compared to 50,000 hours provided by LCD televisions.

An LED display provides the option to dim the backlight, along with other eye comfort features. Not only that, it provides a wider viewing angle without harming image quality. Therefore, an LED display is far better for your eyes than an LCD.

In an LED display, a lot of smaller diodes are used and if a diode is damaged, it can be replaced. In an LCD, you will need to replace the entire bulb in case of damage. Therefore, an LED display is easier and cheaper to maintain than an LCD.

Since LEDs are a better and newer technology, the price of an LED display is higher than an LCD. However, this is only when we are considering the purchase cost.

The picture quality of an LED display is far better than an LCD. Due to modular light-emitting diodes, an LED screen produces better control over the contrast, rendering a clear picture. Also, LED provides RGB contrast, which can show truer blacks and truer whites.

Not to forget, they provide a shorter response time as well. Both of these factors result inLED displays having a better picture quality compared to LCD displays.

Since LED displays are considerably thinner than LCDs, they weigh considerably less. On average, an LED screen weighs about half of an LCD screen of the same size.

As you might have noticed by now, LED wins the battle with LCD without any doubt. This is because LED displays have an advantage in all the factors that matter when considering a purchase, except price.

They are more attractive too. With the increasing shortage of space in new residential complexes, what better solution than an ultra-thin LED display giving a cinematic experience in the comfort of your home.

LED screens are the first choice among the public today, across generations. All are opting to switch to LED from LCD to make their lives more enjoyable and better.

The new line of 3.5” TFT displays with IPS technology is now available! Three touchscreen options are available: capacitive, resistive, or without a touchscreen.

Shopping for a new TV sounds like it could be fun and exciting — the prospect of a gleaming new panel adorning your living room wall is enough to give you goosebumps. But with all the brands to choose from, and different smart capabilities (we can explain what a smart TV is) to weigh, as well as the latest picture tech to consider, it can be daunting. Is this article, we compare OLED vs. LED technology to see which is better for today’s modern TVs. Once you determine which panel type is best for you, make sure you check out our list of the best TVs to get our editor’s recommendations.

If you’re in the market for a TV, you’ve likely heard the hype regarding OLED models. They’re thin, light, and offer incredible contrast and color that’s second to none. OLED is only one letter apart from the more common display type, LED, so what gives? Can they really be that different? In a word: Yes. That extra “O” makes a big difference, but it doesn’t automatically mean an OLED TV will beat an LED TV in every use case. Some TV manufacturers like Samsung use their own technology, called QLED to confuse consumers even more. Make sure that you spend some time looking at our comparison piece: QLED vs. OLED technology before you make your purchase decision.

When OLED TVs first arrived in 2013, they were lauded for their perfect black levels and excellent color, but they took a bit of a hit due to brightness levels that couldn’t compete with LED TVs. There was also a huge price gap between OLED TVs (not to be confused with QLED) and their premium LED counterparts. In fact, legend has it that OLED used to mean “only lawyers, executives, and doctors” could afford them. Thankfully, that’s no longer the case.

OLED TVs are much brighter than they used to be, and the prices have come down, especially with brands like Sony introducing competitive options in 2021. The LED market is due for a bit of a shake-up, too. For now, however, it’s time to take a look at how these two technologies differ and explore the strengths and weaknesses of each.

Non-OLED TVs are made of two main parts: An LCD panel and a backlight. The LCD panel contains the pixels, the little colored dots that make up a TV’s image. On their own, pixels cannot be seen; they require a backlight. When light from the backlight shines through an LCD pixel, you can see its color.

The “LED” in LED TV simply refers to how the backlight is made. In the past, a thicker and less-efficient technology called CCFL (cold-cathode fluorescent light) was used. But these days, virtually every flat-screen TV uses LEDs as its source of backlighting. Thus, when you see the term “LED TV,” it simply refers to an LED-backlit LCD TV.

That said, not all LED TVs are created equal. There can be differences in the number and quality of the LEDs used, which leads to differences in things like brightness and black levels. You may also have seen something called “QLED TV.” This is a type of LED TV that uses quantum dots to achieve better brightness and color. We’ll discuss QLED more below, but here’s a great overview of the differences between QLED and OLED TVs.

The “OLED” in OLED TV stands for “organic light-emitting diode.” OLEDs have the unusual property of being able to produce both light and color from a single diode when they’re fed electricity. Because of this, OLED TVs don’t need a separate backlight. Each pixel you see is a self-contained source of color and light.

Some of the inherent benefits of OLED screens are that they can be extremely thin, flexible, and even rollable. But the biggest benefit when we compare them to LED TVs is that each individual pixel receives its own luminance and power (as opposed to LED TVs, which have persistent pixels that require an external source of light to see). When it’s on, you can see it. When it’s off, it emits no light at all — it’s completely black. We’ll discuss how this affects black levels in a moment.

Currently, LG Display is the only manufacturer of OLED panels for TVs, famed for top-line models like the CX. Sony and LG have an agreement that allows Sony to put LG OLED panels into Sony televisions — like the bright X95OH — but otherwise, you won’t find OLED in many other TV displays sold in the U.S.

The differences in performance between LG’s OLED TVs and Sony’s result from different picture processors at work. Sony and LG have impressive processors that are also unique to each brand, which is why two TVs with the same panel can look drastically different. A good processor can greatly reduce issues like banding and artifacting and produce more accurate colors as well.

For the average consumer, microLED isn’t anything to consider yet. It remains difficult to scale down to less-than-gigantic TVs, and it’s unlikely to hit homes for another couple of years when it will still be exceedingly expensive. Of course, that was once true of OLED, which is why this tech is worth keeping an eye on for a future TV replacement.

Now it’s time to pit these two technologies against each other and see how they stack up when it comes to traits such as contrast, viewing angle, brightness, and other performance considerations.

Editor’s note: Since OLED TVs are still a premium display, we have compared OLED only to equally-premium LED TVs armed with similar performance potential (except, of course, in the price section).

A display’s ability to produce deep, dark blacks is arguably the most important factor in achieving excellent picture quality. Deeper blacks allow for higher contrast and richer colors (among other things) and thus a more realistic and dazzling image. When it comes to black levels, OLED reigns as the undisputed champion.

LED TVs rely on LED backlights shining behind an LCD panel. Even with advanced dimming technology, which selectively dims LEDs that don’t need to be on at full blast, LED TVs have historically struggled to produce dark blacks and can suffer from an effect called “light bleed,” where lighter sections of the screen create a haze or bloom in adjacent darker areas.

OLED TVs suffer from none of the black-level problems of traditional LED TVs. If an OLED pixel isn’t getting electricity, it doesn’t produce any light and is, therefore, totally black. Sounds like an obvious choice to us.

When it comes to brightness, LED TVs have a considerable advantage. Their backlights can be made from large and powerful LEDs. With the addition of quantum dots, that brightness can be preserved even as the size of the individual LEDs get smaller. OLED TVs can get pretty bright, too, and with such dark black levels, the contrast between the brightest and darkest spots on screen is all the more exaggerated. But cranking OLED pixels to their maximum brightness for extended periods reduces their lifespan, and the pixel takes slightly longer to return to total black.

With those considerations in mind, it’s important to note that all modern TVs — whether OLED, LED, or QLED — produce more than adequate brightness. The consideration then becomes where the TV will be used. In a dark room, an OLED TV is going to perform best, while LED TVs will outshine them (quite literally) in more brightly lit environments.

It should also be noted that there have been big gains recently in OLED brightness, making them perfectly suitable for nearly any situation, save direct sunlight beaming onto the screen. Still, when compared directly, LED TVs have the edge.

OLED used to rule this category, but by improving the purity of the backlight, quantum dots have allowed LED TVs to surge forward in color accuracy, color brightness, and color volume, putting them on par with OLED TVs. Those looking for TVs with Wide Color Gamut or HDR will find both OLED and LED TV models that support these features. OLED’s better contrast ratio is going to give it a slight edge in terms of HDR when viewed in dark rooms, but HDR on a premium LED TV screen has an edge because it can produce well-saturated colors at extreme brightness levels that OLED can’t quite match.

Response time refers to the time it takes for each individual pixel to change states. A pixel’s state is not only its color but also its brightness. With a faster response time, you get less motion blur and fewer artifacts (source material notwithstanding).

Because OLED pixels combine the light source and the color in a single diode, they can change states incredibly fast. By contrast, LED TVs use LEDs to produce brightness and tiny LCD “shutters” to create color. While the LED’s brightness can be changed in an instant, LCD shutters are by their nature slower to respond to state changes.

Refresh rate is how often the entire image on-screen changes. The faster the rate, the smoother things look, and the easier it is to pick out details in fast-moving content like sports. Most new TVs are capable of refresh rates of 120Hz, which means the entire image is updated 120 times every second. Some go as high as 240Hz.

If refresh rate were simply a matter of Hz, we’d call OLED TV the winner, simply because it can achieve rates of up to 1,000 times higher than LED TVs. But absolute speed isn’t the only consideration. Unlike movies and TV shows, which use a single refresh rate, video games often employ something called variable refresh rates, which simply means that the rate changes during different parts of a game. If a TV can’t match these rate changes, you end up with image tearing — a visible jerkiness that comes from the disparity between the rate the game is using and the rate the TV wants to use.

That’s why gamers, in particular, want TVs that can handle VRR or Variable Refresh Rate. It’s a rare feature on both OLED and LED TVs, but you can expect to see it show up on more models in both types of TVs. Right now, you can find VRR in certain Samsung, LG, and TCL TVs. But neither OLED nor LED TVs have a real advantage when it comes to VRR; some models have the feature, and some don’t. Your gaming system also has to support VRR, though that shouldn’t be much of an issue if you own a new Xbox Series X, PS5, or even a PS4/One X.

Finally, input lag is the gap in time between when you press a button on a game controller and the corresponding action shows up on-screen. Input lag can be a problem when TVs introduce a lot of picture processing that causes a slow-down in the signal they receive. But most modern TVs have a game mode, which eliminates the processing and reduces input lag to barely discernible levels. In the future, all TVs will be able to sense the presence of a video game and switch to this mode automatically, returning to the processed mode when gaming stops.

OLED, again, is the winner here. With LED TVs, the best viewing angle is dead center, and the picture quality diminishes in both color and contrast the further you move to either side. While the severity differs between models, it’s always noticeable. For its LED TVs, LG uses a type of LCD panel known as IPS, which has slightly better off-angle performance than VA-type LCD panels (which Sony uses), but it suffers in the black-level department in contrast to rival VA panels, and it’s no competition for OLED. Samsung’s priciest QLED TVs feature updated panel design and anti-reflective coating, which make off-angle viewing much less of an issue. While OLED still beats these models out in the end, the gap is closing quickly.

That said, OLED TVs can be viewed with no luminance degradation at drastic viewing angles — up to 84 degrees. Compared to most LED TVs, which have been tested to allow for a max viewing angle of 54 degrees at best, OLED has a clear advantage.

OLEDs have come a long way in this category. When the tech was still nascent, OLED screens were often dwarfed by LED/LCD displays. As OLED manufacturing has improved, the number of respectably large OLED displays has increased — now pushing 88 inches — but they’re still dwarfed by the largest LED TVs, which can easily hit 100 inches in size, and with new technologies, well beyond.

LG says you’d have to watch its OLED TVs five hours a day for 54 years before they’d fall to 50% brightness. Whether that’s true remains to be seen, as OLED TVs have only been out in the wild since 2013. For that reason and that reason only, we’ll award this category to LED TVs. It pays to have a proven track record.

Can one kind of TV be healthier for you than another? If you believe that we need to be careful about our exposure to blue light, especially toward the evening, then the answer could be yes. Both OLED and LED TVs produce blue light, but OLED TVs produce considerably less of it. LG claims its OLED panels only generate 34% blue light versus LED TV’s 64%. That stat has been independently verified, and LG’s OLED panels have been given an Eye Comfort Display certification by TUV Rheinland, a standards organization based out of Germany.

Will it make a difference to your overall health? We think the jury is still out, but if blue light is a concern, you should take a serious look at OLED TVs.

The effect we’ve come to know as burn-in stems from the days of the boxy CRT TV when the prolonged display of a static image would cause an image to appear to “burn” into the screen. What was actually happening was the phosphors that coated the back of the TV screen would glow for extended periods of time without any rest, causing them to wear out and create the appearance of a burned-in image. We think this should be called “burn out,” but we’ll set that one aside.

The same issue is at play with plasma and OLED TVs because the compounds that light up can degrade over time. If you burn a pixel long and hard enough, it will dim prematurely ahead of the rest of the pixels, creating a dark impression. In reality, this is not very likely to cause a problem for most people — you’d have to abuse the TV intentionally to get it to happen. Even the “bug” (logographic) that certain channels use disappears often enough or is made clear to avoid causing burn-in issues. You’d have to watch ESPN all day, every day for a long, long time at the brightest possible setting to cause a problem, and even then, it still isn’t very likely.

That said, the potential is there, and it should be noted. (This is also a contributing factor in the dearth of OLED computer monitors on the market, as computer screens are far more likely to display a static image for hours on end.) Since LED TVs aren’t susceptible to burn-in, they win this fight by a technicality.

OLED panels require no backlight, and each individual pixel is extremely energy-efficient. LED TVs need a backlight to produce brightness. Since LEDs are less energy-efficient than OLEDs, and their light must pass through the LCD shutters before it reaches your eyes, these panels must consume more power for the same level of brightness.

OLED TVs are premium TVs and almost always likely to be more expensive than an LED version of the same size. However, we have seen prices starting to drop down to manageable levels recently, especially if there are any discounts running. MSRPs can go as low as $1,300 to $1,500, but you probably won’t find many lower than that.

Conversely, LED TVs can range in price from a few hundred dollars — even for a quality big-screen model — to several thousand dollars, making them overall more accessible than OLEDs. While prices of the highest-quality LED TVs hover at nearly the same range as the price of OLEDs, when judged by price and price alone, LED TVs can still be acquired for a pittance in comparison.

In terms of picture quality, OLED TVs still beat LED TVs, even though the latter technology has seen many improvements of late. OLED is also lighter and thinner, uses less energy, offers the best viewing angle by far, and, though still a little more expensive, has come down in price considerably. OLED is the superior TV technology today. If this article were about value alone, LED TV would still win, but OLED has come a long way in a short time and deserves the crown for its achievements. Regardless of which technology you ultimately decide on, that’s not the only factor that you need to consider, so be sure to check our TV buying guide to make sure you’re buying the right TV to meet your needs.

microLED, also known as micro-LED, mLED or µLED, first invented in 2000Hongxing Jiang and Jingyu Lin of Texas Tech University while they were at Kansas State University, is an emerging flat-panel display technology. microLED displays consist of arrays of microscopic LEDs forming the individual pixel elements. The first high-resolution and video-capable InGaN microLED microdisplay in VGA format was realized in 2009 by Hongxing Jiang and Jingyu Lin and their colleagues at Texas Tech University and III-N Technology, Inc. via active driving of microLED array by a complementary metal-oxide semiconductor (CMOS) IC.LCD technology, microLED displays offer better contrast, response times, and energy efficiency.

MicroLED offers greatly reduced energy requirements when compared to conventional LCD displays while also offering pixel-level light control and a high contrast ratio. screen burn-in.

As of 2021Sony, Samsung, and Konkavideo walls.LG, Tianma, PlayNitride, TCL/CSoT, Jasper Display, Jade Bird Display, Plessey Semiconductors Ltd, and Ostendo Technologies, Inc. have demonstrated prototypes.BOE, Epistar, and Leyard have plans for microLED mass production.flexible and transparent, just like OLEDs.

Inorganic semiconductor microLED (µLED) technologyHongxing Jiang and Jingyu Lin of Texas Tech University while they were at Kansas State University. Following their first report of electrical injection microLEDs based on indium gallium nitride (InGaN) semiconductors, several groups have quickly engaged in pursuing this concept.Hongxing Jiang and Jingyu Lin) allowing for the development of single-chip high voltage DC/AC-LEDs

Early InGaN based microLED arrays and microdisplays were primarily passively driven. The first actively driven video-capable self-emissive InGaN microLED microdisplay in VGA format (640 × 480 pixels, each 12µm in size with 15µm between them) possessing low voltage requirements was patented and realized in 2009 by Hongxing Jiang and Jingyu Lin and their colleagues at III-N Technology, Inc. (a company funded by Hongxing Jiang and Jingyu Lin) and Texas Tech University, via heterogeneous integration between microLED array and CMOS integrated circuit (IC)

There are several methods to manufacture microLED displays. The flip-chip method manufactures the LED on a conventional sapphire substrate, while the transistor array and solder bumps are deposited on silicon wafers using conventional manufacturing and metallization processes. Mass transfer is used to pick and place several thousand LEDs from one wafer to another at the same time, and the LEDs are bonded to the silicon substrate using reflow ovens. The flip-chip method is used for micro displays used on virtual reality headsets. The drawbacks include cost, limited pixel size, limited placement accuracy, and the need for cooling to prevent the display from warping and breaking due to thermal mismatch between the LEDs and the silicon. Also, current microLED displays are less efficient than comparable OLED displays. Another microLED manufacturing method involves bonding the LEDs to an IC layer on a silicon substrate and then removing the LED bonding material using conventional semiconductor manufacturing techniques.pick-and-place machines and the test and repair process takes several hours. The mass transfer process alone can take 18 days, for a smartphone screen with a glass substrate.µm across.

Excimer lasers are used for several steps: laser lift-off to separate LEDs from their sapphire substrate and to remove faulty LEDs, for manufacturing the LTPS-TFT backplane, and for laser cutting of the finished LEDs. Special mass transfer techniques using elastomer stamps are also being researched.

Quantum dots are being researched as a way to shrink the size of microLED pixels, while other companies are exploring the use of phosphors and quantum dots to eliminate the need for different-colored LEDs.

Digital pulse-width modulation is well-suited to driving microLED displays. MicroLEDs experience a color shift as the current magnitude changes. Analog schemes change current to change brightness. With a digital pulse, only one current value is used for the on state. Thus, there is no color shift that occurs as brightness changes.

Current microLED display offerings by Samsung and Sony consist of "cabinets" that can be tiled to create a large display of any size, with the display"s resolution increasing with size. They also contain mechanisms to protect the display against water and dust. Each cabinet is 36.4 inches (92 cm) diagonally with a resolution of 960 × 540.

microLEDs have innate potential performance advantages over LCD displays, including higher brightness, lower latency, higher contrast ratio, greater color saturation, intrinsic self-illumination, and better efficiency. As of 2016, technological and production barriers have prevented commercialization.

As of 2016, a number of different technologies were under active research for the assembling of individual LED pixels on a substrate. These include chip bonding of microLED chips onto a substrate (considered to have potential for large displays), wafer production methods using etching to produce an LED array followed by bonding to an IC, and wafer production methods using an intermediate temporary thin film to transfer the LED array to a substrate.

Glo and Jasper Display Corporation demonstrated the world"s first RGB microLED microdisplay, measuring 0.55 inches (1.4 cm) diagonally, at SID Display Week 2017. Glo transferred their microLEDs to the Jasper Display backplane.

In March 2018, Bloomberg reported Apple to have about 300 engineers devoted to in-house development of microLED screens.LG Display demonstrated a 173-inch (4.4 m) microLED display.

At SID"s Display Week 2019 in May, Tianma and PlayNitride demonstrated their co-developed 7.56-inch (19.2 cm) microLED display with over 60% transparency.China Star Optoelectronics Technology (CSoT) demonstrated a 3.3-inch (8.4 cm) transparent microLED display with around 45% transparency, also co-developed with PlayNitride.Plessey Semiconductors Ltd demonstrated a monolithic monochrome blue GaN-on-silicon wafer bonded to a Jasper Display CMOS backplane 0.7-inch (18 mm) active-matrix microLED display with an 8μm pixel pitch.

At SID"s Display Week 2019 in May, Jade Bird Display demonstrated their 720p and 1080p microLED microdisplays with 5μm and 2.5μm pitch respectively, achieving luminance in the millions of candelas per square metre. In 2021, Jade Bird Display and Vuzix have entered a Joint manufacturing agreement for making microLED based projectors for smart glasses and augmented reality glasses

At Touch Taiwan 2019 on September 4, 2019, AU Optronics demonstrated a 12.1-inch (31 cm) microLED display and indicated that microLED was 1–2 years from mass commercialization.TCL Corporation demonstrated their Cinema Wall featuring a 4K 132-inch (3.4 m) microLED display with maximum brightness of 1,500cd/m2 and 2,500,000∶1 contrast ratio produced by their subsidiary China Star Optoelectronics Technology (CSoT).