explain difference between led and lcd monitors made in china

It seems as if modern displays have all kinds of different labels: high definition, 3D, smart, 4K, 4K Ultra, the list goes on. The two most common labels are LCD and LED. What’s the difference between the two? Is there a difference? And does this difference make one or the other preferable for certain types of activities like gaming or graphic design?

All LED monitors are LCD monitors. But not all LCD monitors are LEDs. Kind of like all eagles are birds, but not all birds are eagles. While the names might be confusing to those wading through specs to find the best monitor, once you break it down it’s easier to understand than you think.

We’ll explain the tech and the naming conventions, and then highlight some HP monitors that might be the perfect fit for your needs. Let’s figure out exactly what LCD and LED monitors are and how to pick the right one for you.

Both types of displays use liquid crystals to help create an image. The difference is in the backlights. While a standard LCD monitor uses fluorescent backlights, an LED monitor uses light-emitting diodes for backlights. LED monitors usually have superior picture quality, but they come in varying backlight configurations. And some backlight configurations create better images than others.

Until 2014, plasma displays were the most commonly manufactured displays. But then the LCD took over. LCD stands for liquid crystal display. We’ll go over what that means in a minute. But first, it’s important to note that an LED also uses liquid crystals, so the name is somewhat misleading. Technically, an “LED monitor” should really go by the name, “LED LCD monitor.”

First, let’s go over how LCD and LED monitors utilize liquid crystals. The science behind this stuff features an incredibly complicated mix of optics, electrical engineering, and chemistry. But we’ll explain it in layman’s terms.

The key term here is “liquid crystal.” In high school, you might have been taught that there are three states of matter: solids, liquids, and gases. But there are some substances that are actually a strange blend of different states. A liquid crystal is a substance that has properties of both a solid and a liquid. When you get to the upper tiers of science, you begin to discover that everything you once knew is wrong.

Typically, the molecules in a liquid crystal are bunched up in a very dense and unstructured arrangement. But when the liquid crystal is exposed to electricity, the molecules suddenly expand into a very structured, interconnected shape[1].

Pixels are the basic building blocks of a digital image. A pixel is a small dot that can emit colored light. Your display is composed of thousands of pixels, and they’re in a variety of different colors to give you your computer interface and the webpage that you’re currently reading. It works like a mosaic, but each individual piece is much less noticeable.

LCD monitors have backlights behind the screen that emit white light, and the light can’t pass through the liquid crystals while they’re in their liquid arrangement. But when the pixel is in use, the monitor applies an electric current to the liquid crystals, which then straighten out and allow light to pass through them[2].

Standard LCD monitors employ “cold cathode fluorescent lamps,” also known as CCFLs as backlights. These fluorescent lights are evenly placed behind the screen so that they deliver consistent lighting across the display. All regions of the picture will have similar brightness levels.

LED monitors don’t use fluorescent lamps. Instead, they use “light-emitting diodes,” which are extremely small lights. There are two methods of LED backlighting: full-array backlighting and edge lighting.

With full-array backlighting, the LEDs are placed evenly across the entire screen, similar to an LCD setup. But what’s different is that the LEDs are arranged in zones. Each zone of LED lights can be dimmed (also known as local dimming).

Local dimming is a very important feature that can dramatically improve picture quality. The best images are ones that have a high contrast ratio; in other words, images that have both very bright pixels and very dark pixels simultaneously.

When there’s an area of the picture that needs to be darker (a night sky, for instance), the LEDs in that region of the picture can be dimmed to create a truer black. This is not possible on standard LCD monitors, where the entire picture is lit evenly throughout.

There are no local dimming capabilities in edge-lighted displays, so they can’t create pictures that are as high-quality as those created by full-array LEDs. However, edge lighting enables manufacturers to create extremely thin displays that don’t cost as much to produce - and which are better for a tight budget.

When it comes to picture quality, full-array LED monitors are almost always superior to LCD monitors. But bear in mind that only full-array LEDs are superior. Edge-lit LEDs may actually be inferior to LCD monitors.

A full-array LED monitor should be your number one choice for gaming. Steer clear if its edge lighting. The problem with edge lighting is that you’ll have fewer optimal viewing angles with which to play games. That’s not an issue if you prefer to sit directly in front of the screen while you’re gaming. But if you like to kick back in your chair or view from different angles, you’ll find that an edge-lit LED loses visibility as you move away from the center viewing angle.

But even if you play while you’re directly in front of the monitor, edge-lit LEDs have more issues with glare than full-array LEDs do. That’s because of the uneven lighting (very bright around the edges, darker as you approach the center of the display). Because the pixels are evenly lit, LCD monitors tend to have better viewing angles and anti-glare than edge-lit LEDs.

Edge-lit LEDs do have two big advantages. If you have a very tight space in which to fit your monitor, you’ll like having an edge-lit LED because they’re usually thinner than the other types. They’re also less expensive to manufacture, which make them easier on the wallet.

When you’re shopping for a new display, don’t forget to review all of its specs. While the backlighting type is important, you should also take the resolution and refresh rate into account.

Resolution refers to how many pixels are displayed on the monitor. Remember, the more pixels you have, the more dynamic your composition of colors can be. The highest-quality monitors have resolutions of at least 1920 x 1080.

Because LED monitors create better pictures than LCD monitors, nearly all of HP’s displays are built with LED backlights. When you’re browsing through the HP LED monitors, you might notice that some of them are equipped with either “IPS” or “AHVA” technology. These refer to the types of liquid crystal panels that are used. Both are fantastic, although they have some minor differences:

You’ll also see that some monitors have “TN” LED backlights. This is the oldest form of liquid crystal technology. It’s still very effective, but TN panels are typically used in small, work-oriented monitors that are made to be mounted or used in the field.

HP OMEN gaming monitors are built for the power PC gamer. One of the best gaming monitors for your rig is the HP OMEN 32 32-inch display. This LED monitor has VA-type panels, which help give it a fast refresh rate that’s perfect for high-performance gaming.

If you’re a digital illustrator, video editor, photo editor, or special effects wiz, you should give the HP EliteDisplay S270n 27-inch 4K micro edge monitor a look. When you’re creating digital art, you need the most expansive resolution and highest-quality color production possible, and that’s what you’ll get with this IPS-equipped monitor. The micro edge screen makes it easy to use dual monitors, but the 27-inch screen alone gives you a wide interface to work on.

If you’re a business person, try one our HP EliteDisplay monitors, like the HP EliteDisplay E243 23.8-inch monitor. The IPS LED display is gorgeous and will give you a crisp and clear picture no matter what software you’re using. The micro edges make it perfect for a dual monitor setup, and the 23.8-inch size is wide, but not too large to accommodate a second monitor or to fit into tighter workstations.

There are some up-and-coming technologies that are making LED displays even better. OLED and QLED displays are bound to become more commonplace in the future.

“OLED” stands for “organic light-emitting diode.” What makes an OLED unique is that each pixel has a light source that can be individually shut off. On an LED monitor, the only way to keep a pixel from emitting light is to keep the liquid crystal closed. It’s effective, but not perfect - a small portion of light will always seep through. On an OLED monitor, each pixel’s light can be entirely shut off so no light at all will emanate through the liquid crystal. These means you can get truer blacks, which means deeper contrast ratios and better image quality.

There are two additional advantages. First, OLED monitors can be made even thinner than LED monitors because there’s not a separate layer of LEDs behind the pixels. Second, these monitors are more energy efficient because the pixels will only draw power when their light is turned on. One of the downsides, though, is that pixel burn-in will be more noticeable since some pixels will inevitably be used more than others[4].

“QLED” stands for “quantum light-emitting diode.” In a QLED monitor, each pixel has a “quantum dot.” Quantum dots are tiny phosphor particles that glow when you shine a light upon them[5].

Why would you need a glowing particle over each pixel? Because LEDs aren’t very good at emitting bright light. The brightest color is white. But an LED doesn’t emit white light – it emits blue light. Each LED is given a yellow phosphor coating to make it appear less blue and more white, but it’s still not true white. The “blueness” of LEDs negatively impacts the red, blue, and green colors on LED displays. LED monitors have automatic features that adjust the RGB colors to compensate for the blue light, but it can’t compensate for the weaker light intensity.

That’s where the quantum dots come in. The pixels are overlayed by a sheet of red and green quantum dots (there is no blue because blue light is already being emitted by the LED). When the light shines through the liquid crystals, the quantum dots glow, and you’re given a bright, vivid, and lovely spectrum of RGB colors.

Displays are a complicated science, right? But next time you’re shopping for monitors at the store or on our HP Store site, you’ll be a true expert and will be able to pick out exactly the right display for you.

The display of LED video wall technology is colorful, energy-saving and environmental friendly, and the visual angle is high. However, we do not know what led technology is and what is good about it. As the leader of LED display screen industry, Shenzhen Kaipu Technology Co., Ltd. has the obligation to popularize what is led and what is led tv.

The liquid crystal display we often use is actually an LCD display, which is called liquid crystal display in English. Most of the panels are TFT, TFD, ufb and STN. The working principle of the liquid crystal display is to change the color of the liquid crystal inside the transistor by applying power, and there is a fluorescent lamp CCFL backlight behind the transistor board, which usually consumes a lot of power. The LED screen display we see is usually derived from the LCD display, and generally refers to the liquid crystal display using the LED backlight. The LED technology display is not a real LED display, so Samsung was sued for this matter. Since the LED display on the market only uses LED backlight technology, most of the LED displays on the market have been changed to LED backlight display

Since the display uses LED tubes as the backlight, with the help of LED technology, the display body can be made lighter and thinner; As the LED tube itself is more energy-saving, the energy-saving and environmental protection aspects are certainly better than the normal display; However, there is not as big a gap in imaging as that spread on the Internet, because the essence is the same thing, and it is impossible to have too big differences.

I believe that by now we have basically understood the difference between LCD and LED backlight display. The real LED display does not need backlight, so the process requirements are higher and the price is expensive. At present, it has not been popularized, and the only ones are still limited to commercial use.

LCD stands forliquid crystal display. LED means light emitting diode. Technically, both LCD TVs and LED TVs are actually liquid crystal displays. The same basic technology is used in both televisions.

LED TVs are divided into three according to the lighting technique of the screen. These; edge-lit, dynamic RGB LED-illuminated and full-array LED-illuminated models. The most widely used is theedge-lit model, in which LEDs are placed at the edges of the screen and a special panel is used to spread the light evenly behind the screen.

LED TV, contrary to popular belief, is not an LED screen consisting of many LEDs. Therefore, it would be more correct to call LED TVs as LED backlit LCD TVs.

There are two reasons why LED TVs have better picture quality. First, LEDs can produce light of different colors. In this way, a more realistic and sharp color image can be obtained. The second is that the LEDs can be dimmed (dimmed). Controlling the brightness of the LEDs allows the image to be projected with a more realistic black.

LED chips used in LED TVs consumeless power than fluorescent lamps used in LCD TVs. LED TVs consume 20-30 percent less power than LCD TVs. This means lower electricity bills for those who keep the TV on for a long time.

There are a lot of different terms thrown around when people start talking about high-definition televisions. Everyone knows that HD looks better than standard definition, but what makes one type different from another? The two most common terms you"ll see when shopping for a new TV are LCD and LED, but what do they actually mean? And is there a big difference?

LCD (Liquid Crystal Display): A prevalent model of HDTVs, LCDs are flat panel displays through which light can pass or be blocked. The LCD doesn"t produce its own light; this is done by additional lighting (see backlit and edge-lit for more info). LCD HDTVs are available in a variety of sizes and have wide viewing angles, making them ideal for almost any size room.

LED (Light Emitting Diode): A semiconductor device that produces light from electricity. LEDs are often used to backlight LCD displays, which results in a clearer picture.

What does all of this mean for you? When it comes right down to it, the main difference between LCD and LED is that LED televisions are going to look better than other LCD screens. That"s not to downplay how good an LCD HDTV can look, since the picture quality can be stunning, but there"s no denying that there is, indeed, a difference between them. That said, there are other differences worth taking into account. LED televisions can be considerably thinner than LCDs, even coming as thin as 0.3-inches. This, however, when mixed with the clearer image, means that buying an LED television is going to cost more than an LCD TV.

So now you know the difference between LCD and LED. There are other differences between them, and even differences within them, but hopefully, now that you know the main things that make LCD and LED screens different, you can better decide which type of television is right for you.

Need to know more? Check out our in-depth HDTV buying guide and you"ll be able to pick the set that"s right for your family. And if you want to look up those confusing terms (seriously—what does 4K actually mean?), our HDTV Glossary has your back.

LCD stands for “liquid crystal display” and technically, both LED and LCD TVs are liquid crystal displays. The basic technology is the same in that both television types have two layers of polarized glass through which the liquid crystals both block and pass light. So really, LED TVs are a subset of LCD TVs.

LED, which stands for “light emitting diodes,” differs from general LCD TVs in that LCDs use fluorescent lights while LEDs use those light emitting diodes. Also, the placement of the lights on an LED TV can differ. The fluorescent lights in an LCD TV are always behind the screen. On an LED TV, the light emitting diodes can be placed either behind the screen or around its edges. The difference in lights and in lighting placement has generally meant that LED TVs can be thinner than LCDs, although this is starting to change. It has also meant that LED TVs run with greater energy efficiency and can provide a clearer, better picture than the general LCD TVs.

LED TVs provide a better picture for two basic reasons. First, LED TVs work with a color wheel or distinct RGB-colored lights (red, green, blue) to produce more realistic and sharper colors. Second, light emitting diodes can be dimmed. The dimming capability on the back lighting in an LED TV allows the picture to display with a truer black by darkening the lights and blocking more light from passing through the panel. This capability is not present on edge-lit LED TVs; however, edge-lit LED TVs can display a truer white than the fluorescent LED TVs.

Because all these LCD TVs are thin-screen, each has particular angle-viewing and anti-glare issues. The backlit TVs provide better, cleaner angle viewing than the edge-lit LED TV. However, the backlit LED TV will usually have better angle viewing than the standard LCD TV. Both LED and LCD TVs have good reputations for their playback and gaming quality.

When considering delving into the world of Digital Signage/ DOOH/ Video Walls you may find yourself asking if LED or LCD is the way to go, we’re here to help you with that very question.

When you visit airports, railway stations, bus stations, shopping malls, theme parks, restaurants, casinos, stadiums and museums you will most likely come across a digital display, which is used to give directions and provide information.

There are a few critical factors you need to consider when you’re deciding between LED and LCD displays, particularly, viewing distance, the physical location of the screen, the environment in which it’s being showed and the content that’s being displayed.

LCD (Liquid Crystal Display) 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 directly, instead using a backlight or reflector to produce images in color or monochrome.

LCD screens are normally seen in smaller more consumer-driven displays, such as computer monitors or TVs. This screen option is ideal for small applications where an affordable but high-quality display is needed. Additionally, with a wide range of connectivity options, these screens are versatile.

LED screens have become a mainstay in the large event category with their optimal picture resolution and capability to emit high light levels. Through use of Light Emitting Diodes (LED), these systems produce red, green and blue light. By combining and balancing these three primary colors, the user can produce virtually any color on the spectrum.

Led screens are typically built from multiple panels that are connected together. These can be customized and scaled to any shape or size, perfect for huge arenas, smaller trade show exhibits and everything in between. Display your custom content on an LED so the entire arena can see.

LCDs are compound screens from the manufacturers so people may consider it easy to install. However, for commercial users who’s in need of customise large size screens like outdoor billboard, this is clearly not the case. Since LED screen is made up by many pixels, each unit can be combined easily to make a seamless large screen.

Honestly speaking, there is not much difference regards to the colour of the two screens. Two screens both have vivid colours that human eyes can’t really tell any difference.

What differs LED from LCD is the brightness. LED emits light itself. This means each pixel is a light source. By giving different voltage, the brightness can be controlled directly. LCD cannot emit light. It can only reflect and filter the background light source. Consequently, to brighten an LCD screen, the background light needs to be brightened first. No matter how hard you try, LCD still has that dim feeling when presenting images – it might be beneficial if you’re reading through Kindle, but impress the audience when they’re walking by? Not a wise choice.

As mentioned above, LED screens emit light, LCD screens block light. In order to reach the same level of brightness, LCD consumes way more electricity than LED. More importantly, most of the energy consumed by LCD screen is not transformed into the display light, because the light is blocked at the background! As a result, for commercial use billboards, LED is a more energy saving choice.

A large piece of LED screen consists many smaller LED units. They are seamlessly combined to display the large picture. If one LED unit has a problem, all maintenance worker needs to do is to shut down the power, and exchange that tiny unit piece. All other units are not affected because they are in parallel connections with the broken unit. The maintenance cost of LED is very low.

The maintenance of LCD, on the contrary, is high. The whole screen is one big canvas, so even if there’s only one black spot on the corner of an LCD screen, the solution would still have to be changing the whole screen.

The image display quality of LED and LCD screen, if we compare, is like the image file of bitmap and JPEG. LED enlarge the image without the loss of sharpness. LCD not only has disadvantage on displaying moving projects, but also distorts images when the screen size is too large.

The maintenance of LCD, on the contrary, is high. The whole screen is one big canvas, so even if there’s only one black spot on the corner of an LCD screen, the solution would still have to be changing the whole screen.

So, if you’re looking for a digital sign that is going to last a long time, LED is the answer. However, viewing distances are more limited with LED. You can view an LCD screen much closer, whilst LED contrast and color will be stronger – you will need to stand 1 meter away to view it at it’s best. When you’re making the decision between LED and LCD, consider where it will be located and what you are using it for.

We understand that price, size and location is a big consideration when deciding which digital signage is suitable for you. We can discuss LED vs LCD more over the phone or via email, we’d love to guide you in the right direction and cater your signage experience to your business.

One of the most common questions we’re asked when assisting businesses establish their digital signage systems is whether an LED or an LCD display is preferred. The answer is always contextual to the clients" needs. It starts by clarifying what the difference between the two actually is.

When we’re talking aboutconsumer products such as computer monitors and televisions the first thing to know is that an LED screenis an LCD screen, but an LCD screen is not always an LED screen. An LED monitor or television is just a specific type of LCD screen, which uses a liquid crystal display (LCD) panel to control where light is displayed on your screen.

For the display to be considered an LED screen, it means it is utilising ‘Light Emitting Diodes’ to generate the light behind the liquid crystals to form an image. A non-LED LCD screen has backlights (called fluorescent lamps) behind the screen that emit white light which cannot pass through the liquid crystals until an electric current is applied to the liquid crystals which then straighten out and allow light to pass through.

This is where it can get easy to divert away from giving clear advice on LED vs LCD for digital displays, because consumer displays differ from commercial displays. We are not trying to give the reader direction on which monitor is best for their gaming set-up, but which screen type is ideal for communicating your business’ messages.

Commercial LED displays are typically referred to as Direct View LED. This is because they use LEDs as the individual pixels that make up the image itself. Using a surface array of LEDs removes any need for a liquid crystal display panel, which carries noticeable benefits for particular uses.

While LCD flat panels are available in resolutions of 1080P and 4K UHD, Direct View LED displays are measured by pixel pitch. Pixel pitch is the distance from the centre of one pixel cluster to the centre of the next pixel cluster in an LED screen. The smaller the pitch, the closer viewers can get to the display before they see the pixels themselves. Outdoor configurations may have a pitch of 10mm to 40mm, as they are viewed at longer distances.

For use indoors, where viewers would be closer to the display, a pitch of 10mm or less would be required, some have even sub-1mm pixel pitch. When considering Direct View LED displays, it is important to know the minimum viewing distance required. Multiplying the pixel pitch by 1,000 gives you a good rule of thumb for the minimum viewing distance.

Direct view LED displays can either use discrete oval LEDs which are basically one single self-contained diode, or Surface Mounted Device (SMD) LEDs. SMD LEDs contain 3 individual light-emitting diodes bunched together. Either way, it’s the light-emitting diodes that create the images you see on screen.

Commercial LCD screens are more closely related to their consumer counterparts like TVs but there are still differences to be aware of. It is not advised to simply purchase an LCD TV from your local electronics retailer and install it in a public setting and expect it to function as desired.

Both have been designed to be used differently. Commercial display manufacturers understand that their displays are going to be exposed to far different conditions than a living room television will be. The componentry in a commercial display is optimised to allow for the display to be on 24 hours a day, all year around. They take into account diverse environments such as hot kitchens, high foot traffic, and bad weather,ensuring the product won’t fail in such exposures. The addition of more durable and resistant technology means commercial LCD displays will typically be priced higher than their consumer cousins.

Benefits of Commercial LED compared to Commercial LCDBrightness: When deployed in areas with strong ambient lighting, even the best LCDs can appear washed out and difficult to view, especially when from an angle. Direct view LEDs for outdoor applications can reach 9,000 nits, making them a brighter and better choice for most outdoor applications.

Contrast: Direct View LEDs can turn off pixels that aren’t being used which allows for a higher contrast and therefore a richer image in varied lighting conditions.

Size and shape: Direct view LED-based walls can be flat, curved, wrapped around pillars and more. With no size limit or set aspect ratio they can be used more flexibly than LCDs. Plus, panels have no bezels which means you can piece together Direct view LEDs to create large and uniquely shaped displays with no visible interruptions between units.

Lifespan and servicing: Most direct view LEDs are rated to last 10 years, compared to a typical 5 years for LCDs. Further, they can be easily replaced on-site, reducing maintenance costs.

Tougher: If you’re using an LCD for any outdoor application or one where the unit has to be protected from extreme temperatures or humidity, you’re going to need to include an enclosure and have an understanding of how to properly seal and vent the unit. Outdoor Direct view LEDs, on the other hand, are purpose-built to withstand harsh environments.

Benefits of Commercial LCD compared to LEDsPrice: The higher upfront cost of Direct LEDs could be the biggest sticking point when it comes to pitching a video wall. While prices have been steadily dropping, Direct view LEDs are still more expensive than LCD alternatives. However, make sure you consider the lifetime cost of the solution and other benefits mentioned above before you discount direct view LEDs.

Functionality: LCD screens can offer a wider range of functionality when it comes to set-up, display settings, and day-to-day control. There is also the addition of touch screen options for LCD displays which are a fairly sought-after feature these days.

Resolution: Whilst the fine pixel pitches available in direct view LEDs today make for impressively resolute images, LCD screens still boast are more uninterrupted image when viewed up close, particularly with the modern 4k displays. This makes them a better option for smaller retail stores, quick service restaurants or office meeting rooms.

Screen brightness is impressive in a variety of locations and from any viewing angle, resolution is extremely clear from a viewing distance of 5ft and above.

As earlier stated, intended use for the display will determine which format you invest in. In outdoor environments or areas with high ambient lighting, brightness is the key concern. For indoor environments, the key concern is image quality and contrast. It’s also imperative to consider the usage environment and what the screen may be exposed to with regards to weather, temperature, humidity, direct contact and other factors. If you have a good understanding of your requirements for content, application, perception and budget then your first move should be to contact a supplier, like Black Lab Design, and we will be able to assist you with designing, building and installing the perfect digital display solution for your business.

When it comes todisplay technologies such asprojectorsand panels, factors such as resolution and refresh rate are often discussed. But the underlying technology is equally, if not more, important. There are tons of different types of screens, from OLED and LED to TN, VA, and IPS. Learn about the various monitor and television types, from operation to pros and cons!

The most common form of monitor or TV on the market is LCD or Liquid Crystal Display. As the name suggests, LCDs use liquid crystals that alter the light to generate a specific colour. So some form of backlighting is necessary. Often, it’s LED lighting. But there are multiple forms of backlighting.

LCDs have utilized CCFLs or cold cathode fluorescent lamps. An LCD panel lit with CCFL backlighting benefits from extremely uniform illumination for a pretty even level of brightness across the entire screen. However, this comes at the expense of picture quality. Unlike an LED TV, cold cathode fluorescent lamp LCD monitors lack dimming capabilities. Since the brightness level is even throughout the entire array, a darker portion of scenes might look overly lit or washed out. While that might not be as obvious in a room filled with ambient light, under ideal movie-watching conditions, or in a dark room, it’s noticeable. LED TVs have mostly replaced CCFL.

An LCD panel is transmissive rather than emissive. Composition depends on the specific form of LCD being used, but generally, pixels are made up of subpixel layers that comprise the RGB (red-green-blue) colour spectrum and control the light that passes through. A backlight is needed, and it’s usually LED for modern monitors.

Please note that some of the mentioned types may be considered a sub-category of LCD TVs; therefore, some of the names may vary depending on the manufacturer and the market.

1)Film layer that polarizes light entering2)glass substrate that dictates the dark shapes when the LCD screen is on3)Liquid crystal layer4)glass substrate that lines up with the horizontal filter5)Horizontal film filter letting light through or blocking it6)Reflective surface transmitting an image to the viewer

While many newer TVs and monitors are marketed as LED TVs, it’s sort of the same as an LCD TV. Whereas LCD refers to a display type, LED points to the backlighting in liquid crystal display instead. As such, LED TV is a subset of LCD. Rather than CCFLs, LEDs are light-emitting diodes or semiconductor light sources which generate light when a current passes through.

LED TVs boast several different benefits. Physically, LED television tends to be slimmer than CCFL-based LCD panels, and viewing angles are generally better than on non-LED LCD monitors. So if you’re at an angle, the picture remains relatively clear nonetheless. LEDs are alsoextremely long-lasting as well as more energy-efficient. As such, you can expect a lengthy lifespan and low power draw. Chances are you’ll upgrade to a new telly, or an internal part will go out far before any LEDs cease functioning.

Ultimately, the choice between LED vs VA or any other display technology will depend on your specific needs and preferences, including things like size, resolution, brightness, and colour accuracy.

Please note that some of the mentioned types may be considered a sub-category of LED TVs; therefore, some of the names may vary depending on the manufacturer and the market.

Further segmenting LED TVs down, you"ll find TN panels. A TN or twisted nematic display is a type of LED TV that offers a low-cost solution with a low response time and low input lag.

These displays are known for their high refresh rates, ranging from 100Hz to 144Hz or higher. As a result, many monitors marketed towards gamers feature TN technology. The fast response time and low input lag make them ideal for fast-paced action and gaming. However, TN panels have some limitations.

They suffer from inferior colour reproduction, meaning that the colours they display may be less accurate and vibrant than other technologies. Additionally, they have poor viewing angles, meaning the picture quality can degrade when viewed from certain angles. This is due to the way the liquid crystal molecules point at the viewer and the orientation of the light polarizers at 90-degree angles.

Overall, while TN panels are an affordable and fast option, they may not be the best choice for those looking for accurate colour reproduction and wide viewing angles.

Like TN, IPS or In-plane Switching displays are a subset of LED panels. IPS monitors tend to boast accurate colour reproduction and great viewing angles. Price is higher than on TN monitors, but in-plane switching TVs generally feature a better picture when compared with twisted nematic sets. Latency and response time can be higher on IPS monitors meaning not all are ideal for gaming.

An IPS display aligns liquid crystals in parallel for lush colours. Polarizing filters have transmission axes aligned in the same direction. Because the electrode alignment differs from TN panels, black levels, viewing angles, and colour accuracy is much better. TN liquid crystals are perpendicular.

A VA or vertical alignment monitor is a type of LED monitor that features excellent contrast ratios, colour reproduction, and viewing angles. This is achieved by using crystals that are perpendicular to the polarizers at right angles, similar to the technology used in TN monitors. VA monitors are known for their deep blacks and vibrant colours, making them popular for media consumption and gaming.

They also have better viewing angles than TN monitors, meaning that the picture quality remains consistent when viewed from different angles. However, the response time of a VA monitor is not as fast as that of a TN monitor, which can be a concern for those looking to use the monitor for fast-paced action or gaming.

The pricing of VA monitors varies, but they are typically more expensive than TN monitors and less costly than IPS or OLED monitors. Overall, VA monitors are an excellent option for those looking for a balance between good picture quality and affordability.

A quantum dot LED TV or QLED is yet another form of LED television. But it’s drastically different from other LED variants. Whereas most LED panels use a white backlight, quantum dot televisions opt for blue lights. In front of these blue LEDs sits a thin layer of quantum dots. These quantum dots in a screen glow at specific wavelengths of colour, either red, green, or blue, therefore comprising the entire RGB (red-green-blue) colour spectrum required to create a colour TV image.

QLED TV sets are thus able to achieve many more local dimming zones than other LED TVs. As opposed to uniform backlighting, local dimming zones can vary backlighting into zones for adjustable lighting to show accurate light and dark scenes. Quantum Dot displays maintain an excellent, bright image with precise colour reproduction.

Quantum Dot TV (QD-TV):  A type of television that uses quantum dots, also known as semiconductor nanocrystals, to produce more accurate and vibrant colours.

Please note that some of the mentioned types may be considered a sub-category of Quantum Dot TVs; therefore, some of the names may vary depending on the manufacturer and the market. Also, it"s worth mentioning that not all brands use the same technology. Some are using QD films or QD-LEDs, others are using QD-OLEDs, and the list could go on.

An OLED or organic light-emitting diode display isn’t another variation of LED. OLEDs use negatively and positively charged ions for illuminating individual pixels. By contrast, LCD/LED TVs use a backlight that can make an unwanted glow. In OLED display, there are several layers, including a substrate, an anode, a hole injection layer, a hole transport layer, an emissive layer, a blocking layer, an electron transport layer, and a cathode. The emissive layer, comprised of an electroluminescent layer of film, is nestled between an electron-injecting cathode and an electron removal layer, the anode. OLEDs benefit from darker blacks and eschew any unwanted screen glow. Because OLED panels are made up of millions of individual subpixels, the pixels themselves emit light, and it’s, therefore, an emissive display as opposed to a transmissive technology like LCD/LED panels where a backlight is required behind the pixels themselves.

The image quality is top-notch. OLED TVs feature superb local dimming capabilities. The contrast ratio is unrivalled, even by the best of QLEDs, since pixels not used may be turned off. There’s no light bleed, black levels are incredible, excellent screen uniformity, and viewing angles don’t degrade the picture. Unfortunately, this comes at a cost. OLEDs are pricey, and the image isn’t as bright overall when compared to LED panels. For viewing in a darkened room, that’s fine, but ambient lighting isn’t ideal for OLED use.

OLED:Organic light-emitting diode display, non-LED. Emissive technology is where negatively and positively charged ions illuminate individual pixels in a display.

Please note that OLED technology can be applied to various displays and devices, and the list mentioned above may not be exhaustive. Also, some types may be considered a sub-category of OLED.

As you can see, a wide variety of displays are available on the market today, each with their unique advantages and disadvantages. While many monitors and TVs are referred to by various names, such as LED, IPS, VA, TN, or QLED, many are variations of LCD panels. The specific technology used in a display, such as the colour of backlighting and the alignment of pixels, plays a major role in determining the overall picture quality.

When choosing the right type of monitor or display for your needs, it"s important to consider all the options available and weigh the pros and cons of each one. This can include things like resolution, refresh rate, response time, colour accuracy, and more subjective factors like overall picture quality and viewing angles.

Now that you better understand the various display technologies available, you can make a more informed decision when selecting the best display to fit your needs.

If you’re in the market to rent a video wall, you’ve probably run into all sorts of confusing info. Here’s the lowdown on LCD vs. LED video walls so you can make the right choice for your next conference, trade show, or other event.

We’re about to throw a whole lot of info at you. So let’s first take a second to remember why both LED and LCD video walls are a good investment in the first place.

The old adage, “the bigger the better,” is definitely true when it comes to AV. A video wall immediately symbolizes your company is established, and sends a subconscious message that people should take your business seriously. Video walls help you stand out, and compete with all the other businesses who are investing in splashy, eye-catching displays.

Content – Do have the resources to produce custom content for your video wall? After you finalize the size of your video wall, your AV provider can tell you the exact dimensions and resolution your content needs to be. From there, a designer or video editor can create custom video wall content — which is the most important part of any great video wall.

Venue Type – An outdoor venue presents a different challenge than an indoor trade show without windows. There’s a great video wall solution for lots of different venues, but be sure your venue and the basic event details are confirmed first.

Price – A video wall system is always going to cost more than monitors, projectors, or other digital signage. Make sure you have enough room in your budget for a video wall — which can start in the ballpark of $10,000 and go upwards from there.

Once reserved for stadiums and shopping malls, LED walls have become much more accessible for corporate events in recent years. An LED wall is made of many smaller LED panels. Each panel has hundreds of tiny light sources called “light emitting diodes” that can change color to create a large, seamless image.

Technicians can add panels until the LED wall is as massive as you need it to be. Random fact: The Suzhou Sky Screen in China is the largest LED video wall in the world, measuring 1,640 feet long — about 4.5 football fields.

Meanwhile, an LCD video wall is a large surface for video or images built from many LCD screens. You’ve interacted with an LCD screen before — they’re on your laptop, TV monitor, and more. However, the LCD video wall screens are designed to run longer and have thinner edges, called bezels.

Technicians use special hardware and tools to stack the LCD screens on top of one another, and calibrate the wall so that an image shows up across every screen. Temporary LCD walls can usually only be about five screens across and five screens high.

Temporary LCD walls can be configured to be in many different sizes and shapes, both large and small, but typically don’t go larger than five screens across and five screens high.

Our most popular LCD walls are about 16’ wide by 10’ tall. Also, when measuring your ceiling height, keep in mind that most walls don’t go all the way down to the floor. So you’ll need to add that into your total height need.

People need to view LED walls from a distance to get the full picture. Think of them like a Lite Brite, or an impressionist painting — you get the full picture when you’re further away. Though made of LED panels, there are no seams.

The image on an LCD wall will be sharper than on LED walls, especially while standing nearby, since it’s made from HD panels. Will have very thin seams between each LCD screen, called bezels.

Since an LCD Wall are basically fancy computer monitors, it’s typically easier to create content. If your content looks great on a standard computer monitor with a 16:9 aspect ratio, it will look good on an LCD wall. Your AV provider will give you dimensions and resolution requirements once you decide on the size you need, and can also help you determine where the seams (or “bezels”) will be so none of your image gets cut off.

Much lower than LCD — but you’ll still need to make sure your venue has enough power capabilities. Your video wall provider can tell you how much power you’ll need.

Imagine an LCD video wall is like a tray of lasagna. Reliable, beautiful, and sturdy — but you can only increase the size of a tray of lasagna so much. Affordable, but it has a limit in size.

Meanwhile, imagine an LED wall like a limitless, footlong sub. It might not be quite as satisfying and vibrant as a steaming tray of lasagna, but you can keep adding to it until it’s as massive as you’d like.

Video walls are a great way to increase the professionalism and engagement of your event. As national video wall experts, we’d love to learn more about what you’re looking for, and how we can help make your vision come to life.

Today, there are more options than ever before when it comes to purchasing a flat panel HDTV. The newest, hottest technology in HDTV are the super thin and lightweight LED TVs. But how is LED different from LCD? Should you expect to pay more for an LED TV? What are the benefits of LED vs LCD? We went to Westinghouse Digital and got some input on them regarding their take on this common question. While all manufacturers have their different opinions on the ideal TV, Westinghouse is really pushing hard on LED backlit technology, and in particular, edge-lit models.

easily differentiate the product from typical CCFL lit LCD products.While an LED TV is still technically an LCD TV, just get used to seeing this type of designation. We don"t really have a problem with it and it does, among other things, seem to make it easier to say it out loud.

With LED TVs, edge-lit technology is what allows some sets to be less than 1-inch thick. The LEDs are actually arranged around the very edge of the screen, allowing the display to be very thin, since the lighting technology isn"t positioned behind the screen. While this does indeed grant a thinner display, it typically (this is changing now) precludes te manufacturer from setting up a system that optimizes contrast across various areas of the screen.

Several manufacturers are optimizing their LED backlit displays to produce different amounts of backlighting on different areas of the screen. In this way, you can see content that contains bright areas on the screen along with very black areas. Think of a candle lit in a dark room. With your typical edge lit display you have one level for the overall backlight. With Smart Dimming, you can brightly light the part of the screen with teh candle, and then all but turn off the LEDs behind the black areas of the screen.

efficiently that they may even cost less than conventional CCFL lit LCD TVs. The bottom line is that LEDs are getting cheaper and cheaper and soon we estimate they will actually be easier and cheaper to produe than CCFL backlit displays.

and weigh less than LCD TVs and generally create a brighter picture. For those who are environmentally concerned, LED TVs also contain no Mercury or Lead.

To help people make the right choice, here below I will briefly introduce the main differences between them. (Remark: LCD screen spoke here mainly use for commercial instead of household electrical appliances and cellphone etc.)

1.The principle of illumination and the manufacturing process are different. The LED display image is composed of a dense array of light-emitting diodes, and the image definition depends on the resolution of the light-emitting point. The LCD is composed of liquid crystal cells. This process is mainly manufactured by major manufacturers such as Samsung, LG, AUO, BOE, and Sharp.

2.The requirement of the definition is different. LCD screen definition higher than LED screen. With the development of technology, LED display screens have gradually improved significantly in terms of pitch and definition.

5.There is no obvious seam on the LED display screen, and LCD screen has the obvious line splice, which serious affects the beauty of the screen. At the present, LG has just launched a 0.9mm splicing gap with one thin black line, the viewing experienceis perfect.

6.With the development of the small lamp, LED screen can be with much high definition. Currently, 0.9mm pitch LED screen can be achieved. In some occasions, people use the small pitch screen to replace the LCD screen for the definition is great and the color and brightness of the LED screen much better. Now the LED display screen applications are spread to the large command centers, meteorological centers, studios, meeting rooms and conference venues etc. Although the resolution is still not up to the LCD display, the unit price is slightly higher, the fine pitch display has gradually launched a fierce challenge to the LCD display.

7.As for the brightness, if client require brighter and virtual color, he can choose LED display screen. The viewing performance of the LED display is better than LCD display.

Above project is our company outdoor K10 LED screen. When comparing to the last LCD splice screen, the viewing performance still be very great. How to choose LED or LCD in the commercial display, the selection is as below:

3.If the screen in big size and the viewing distance is far. Please select LED screen. You can choose the pixel pitch by the screen size and the viewing distance.

5.In terms of the cost, based on the experience, fine pitch LED screen with the pixel pitch below 2mm, the unit price for LED display screen is higher than LCD display screen. The pixel pitch above 2mm, the unit for LED display is lower than LCD screen.

You can choose the appropriate LED display or LCD display according to your needs. Our FOCONO indoor fine pitch LED screen range covers 1.25mm, 1.562mm, 2mm, 2.98mm, 3.91mm, 4.17mm etc. The outdoor fixed /rental LED display range covers 3.91mm, 4.81mm, 5.95mm, 6.4mm, 8mm, 10.67mm, 12.9mm etc. Also we have sport LED perimeter, LED poster screen, street light pole LED screen, transparent LED display as well as soft LED display etc. You have very wide choice for our commercial LED display project.

One of today’s modern technological wonders is the flat-panel liquid crystal display (LCD) screen, which is the key component we find inside televisions, computer monitors, smartphones, and an ever-proliferating range of gadgets that display information electronically.What most people don’t realize is how complex and sophisticated the manufacturing process is. The entire world’s supply is made within two time zones in East Asia. Unless, of course, the factory proposed by Foxconn for Wisconsin actually gets built.

Last week I had the opportunity to tour BOE Technology Group’s Gen 10.5 factory in Hefei, the capital of China’s Anhui Province.This was the third factory, or “fab” that Beijing-based BOE built in Hefei alone, and in terms of capability, it is now the most advanced in the world.BOE has a total of 12 fabs in Beijing, Chongqing, and several other major cities across China; this particular factory was named Fab 9.

Liquid crystal display (LCD) screens are manufactured by assembling a sandwich of two thin sheets of glass.On one of the sheets are transistor “cells” formed by first depositing a layer of indium tin oxide (ITO), an unusual metal alloy that you can actually see through.That’s how you can get electrical signals to the middle of a screen.Then you deposit a layer of silicon, followed by a process that builds millions of precisely shaped transistor parts.This patterning step is repeated to build up tiny little cells, one for each dot (known as a pixel) on the screen.Each step has to be precisely aligned to the previous one within a few microns.Remember, the average human hair is 40 microns in diameter.

On the other sheet of glass, you make an array of millions of red, green, and blue dots in a black matrix, called a color filter array (CFA).This is how you produce the colors when you shine light through it.Then you drop tiny amounts of liquid crystal material into the cells on the first sheet and glue the two sheets together.You have to align the two sheets so the colored dots sit right on top of the cells, and you can’t be off by more than a few microns in each direction anywhere on the sheet.The sandwich is next covered with special sheets of polarizing film, and the sheets are cut into individual “panels” – a term that is used to describe the subassembly that actually goes into a TV.

For the sake of efficiency, you would like to make as many panels on a sheet as possible, within the practical limitations of how big a sheet you can handle at a time.The first modern LCD Fabs built in the early 1990s made sheets the size of a single notebook computer screen, and the size grew over time. A Gen 5 sheet, from around 2003, is 1100 x 1300 mm, while a Gen 10.5 sheet is 2940 x 3370 mm (9.6 x 11 ft).The sheets of glass are only 0.5 - 0.7 mm thick or sometimes even thinner, so as you can imagine they are extremely fragile and can really only be handled by robots.The Hefei Gen 10.5 fab is designed to produce the panels for either eight 65 inch or six 75 inch TVs on a single mother glass.If you wanted to make 110 inch TVs, you could make two of them at a time.

The fab is enormous, 1.3 km from one end to the other, divided into three large buildings connected by bridges.LCD fabs are multi-story affairs.The main equipment floor is sandwiched between a ground floor that is filled with chemical pipelines, power distribution, and air handling equipment, and a third floor that also has a lot of air handling and other mechanical equipment.The main equipment floor has to provide a very stable environment with no vibrations, so an LCD fab typically uses far more structural steel in its construction than a typical skyscraper.I visited a Gen 5 fab in Taiwan in 2003, and the plant manager there told me they used three times as much structural steel as Taipei 101, which was the world’s tallest building from 2004- 2010.Since the equipment floor is usually one or two stories up, there are large loading docks on the outside of the building.When they bring the manufacturing equipment in, they load it onto a platform and hoist it with a crane on the outside of the building.That’s one way to recognize an LCD fab from the outside – loading docks on high floors that just open to the outdoors.

LCD fabs have to maintain strict standards of cleanliness inside.Any dust particles in the air could cause defects in the finished displays – tiny dark spots or uneven intensities on your screen.That means the air is passed through elaborate filtration systems and pushed downwards from the ceiling constantly.Workers have to wear special clean room protective clothing and scrub before entering to minimize dust particles or other contamination.People are the largest source of particles, from shedding dead skin cells, dust from cosmetic powders, or smoke particles exhaled from the lungs of workers who smoke.Clean rooms are rated by the number of particles per cubic meter of air.A class 100 cleanroom has less than 100 particles less than 0.3 microns in diameter per cubic meter of air, Class 10 has less than 10 particles, and so on. Fab 9 has hundeds of thousands of square meters of Class 100 cleanroom, and many critical areas like photolithography are Class 10.In comparison, the air in Harvard Square in Cambridge, MA is roughly Class 8,000,000, and probably gets substantially worse when an MBTA bus passes through.

Since most display manufacturing has to be done in a cleanroom and handling the glass requires such precision, the factory is heavily automated.As you watch the glass come in, it is placed into giant cassettes by robot handlers, and the cassettes are moved around throughout the factory.At each step, robots lift a piece of glass out of the cassette, and position it for the processing machines.Some of the machines, like the ones that deposit silicon or ITO, orient the glass vertically, and put them inside an enormous vacuum chamber where all the air is first pumped out before they can go to work.And then they somehow manage to deposit micrometer thin layers that are extremely uniform.It is a miracle that any of this stuff actually works.

It obviously costs a lot to equip and run such a fab.Including all of the specialized production tools, press reports say BOE spent RMB 46 billion (US$6.95 billion). Even though you don’t see a lot of people on the floor, it takes thousands of engineers to keep the place running.

The Hefei Gen 10.5 is one of the most sophisticated manufacturing plants in the world.On opening day for the fab, BOE shipped panels to Sony, Samsung Electronics, LG Electronics, Vizio, and Haier.So if you have a new 65 or 75-inch TV, there is some chance the LCD panel came from here.

An LED-backlit LCD is a liquid-crystal display that uses LEDs for backlighting instead of traditional cold cathode fluorescent (CCFL) backlighting.TFT LCD (thin-film-transistor liquid-crystal display) technologies as CCFL-backlit LCDs, but offer a variety of advantages over them.

While not an LED display, a television using such a combination of an LED backlight with an LCD panel is advertised as an LED TV by some manufacturers and suppliers.

Unlike OLED and microLED displays, LCDs cannot achieve true blacks for pixels which are illuminated by the backlight. Some LED-backlit LCDs use local dimming zones to increase contrast between bright and dim areas of the display, but this can result in a "blooming" or "halo" effect on dark pixels in or adjacent to an illuminated zone.

A 2016 study by the University of California (Berkeley) suggests that the subjectively perceived visual enhancement with common contrast source material levels off at about 60 LCD local dimming zones.

LED-backlit LCDs are not self-illuminating (unlike pure-LED systems). There are several methods of backlighting an LCD panel using LEDs, including the use of either white or RGB (Red, Green, and Blue) LED arrays behind the panel and edge-LED lighting (which uses white LEDs around the inside frame of the TV and a light-diffusion panel to spread the light evenly behind the LCD panel). Variations in LED backlighting offer different benefits. The first commercial full-array LED-backlit LCD TV was the Sony Qualia 005 (introduced in 2004), which used RGB LED arrays to produce a color gamut about twice that of a conventional CCFL LCD television. This was possible because red, green and blue LEDs have sharp spectral peaks which (combined with the LCD panel filters) result in significantly less bleed-through to adjacent color channels. Unwanted bleed-through channels do not "whiten" the desired color as much, resulting in a larger gamut. RGB LED technology continues to be used on Sony BRAVIA LCD models. LED backlighting using white LEDs produces a broader spectrum source feeding the individual LCD panel filters (similar to CCFL sources), resulting in a more limited display gamut than RGB LEDs at lower cost.

The evolution of energy standards and the increasing public expectations regarding power consumption made it necessary for backlight systems to manage their power. As for other consumer electronics products (e.g., fridges or light bulbs), energy consumption categories are enforced for television sets.

Using PWM (pulse-width modulation), a technology where the intensity of the LEDs are kept constant but the brightness adjustment is achieved by varying a time interval of flashing these constant light intensity light sources,

A first dynamic "local dimming" LED backlight was public demonstrated by BrightSide Technologies in 2003,Sony in September 2008 on the 40-inch (1,000 mm) BRAVIA KLV-40ZX1M (known as the ZX1 in Europe). Edge-LED lighting for LCDs allows thinner housing; the Sony BRAVIA KLV-40ZX1M is 1 cm thick, and others are also extremely thin.

LED-backlit LCDs have longer life and better energy efficiency than plasma and CCFL LCD TVs.mercury, an environmental pollutant, in their manufacture. However, other elements (such as gallium and arsenic) are used in the manufacture of the LED emitters; there is debate over whether they are a better long-term solution to the problem of screen disposal.

Because LEDs can be switched on and off more quickly than CCFLs and can offer a higher light output, it is theoretically possible to offer very high contrast ratios. They can produce deep blacks (LEDs off) and high brightness (LEDs on). However, measurements made from pure-black and pure-white outputs are complicated by edge-LED lighting not allowing these outputs to be reproduced simultaneously on screen.

Quantum dots are photoluminescent; they are useful in displays because they emit light in specific, narrow normal distributions of wavelengths. To generate white light best suited as an LCD backlight, parts of the light of a blue-emitting LED are transformed by quantum dots into small-bandwidth green and red light such that the combined white light allows a nearly ideal color gamut to be generated by the RGB color filters of the LCD panel. The quantum dors may be in a separate layer as a quantum dot enhacement film, or replace pigment-based green and red resists normally used in LCD color filters. In addition, efficiency is improved, as intermediate colors are no longer present and do not have to be filtered out by the color filte