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A video wall is not a one-size-fits-all solution. There are many options to choose from when designing a commercial building video wall display: the size and shape of the digital canvas, what type of content will be displayed and the purpose of the video wall. Operationally, you may focus on desired reliability, maintenance and serviceability of the equipment. Hardware and technology decisions ensure the video wall will deliver both the desired viewing and ownership experience.

One of these choices is deciding between an LCD display or an LED video wall. Continue reading to find out more about the basics, as well as the advantages and disadvantages of each solution.

Most people are familiar with LCD technology, which stands for Liquid Crystal Display. These types of displays have a massive presence in this world, used in living rooms to watch movies, fast-food restaurants to showcase menus, airports to show flight schedules, and everything in between. LCD technology was developed in the 1960s and has been used worldwide as a standard for roughly 20 years. It is a tried-and-true technology that has stood the test of time and will be around for the foreseeable future.

On an LCD screen, the panel is illuminated by a light source and works through reflection or transmission of light. Overall, LCD displays have better viewing angles and less glare than LED screens. This technology was designed to be energy efficient and tends to be lighter in weight.

An LCD video wall is made up of multiple LCD panel monitors mounted on a surface to create a digital canvas, which then work together to create a unified experience. They operate 24/7 at a high brightness and have thin bezels that help create a seamless look when the displays are placed next to one another.

Bezel thickness and the brightness rating are among key attributes to consider for an LCD video wall display. Here is what each of these means and why.

Bezel:Bezel thicknesses for video wall displays are measured in “bezel-to-bezel” thickness.This is the thickness of the bezel when two displays are placed next to one another. Displays can be either large bezel or thin bezel.

Nits:Brightness is measured in Nits. A higher Nit value means the display will be brighter. A brighter display is necessary in a room that sees plenty of direct sunlight, or if the intent is to draw in visitors from far away. With LCD video walls, the price of the hardware goes up as the display size and brightness increase, and the bezel width decreases.

The next item to consider is the type of content that will be displayed on your video wall. LCD displays have high resolution screens — modern 4K displays have over 8 million pixels! This means that the content being displayed is highly detailed and crystal-clear. A viewer could stand less than 1 foot away from the screen and be able to see exactly what is being shown on the screen.

Like previously mentioned with LCD video walls, an important consideration in the decision-making process is the type of content that will be displayed on the video wall. LED video walls suffer from image degradation and pixilation from up close, so fine details will be lost, and text will be illegible. If detail from up close is important, LCD displays are much better suited for that situation.Content examples that are well-suited for an LCD video wall:

Video walls add exciting drama and premium value to showcase spaces. It is an investment that adds a perfect eye-catching solution for a busy lobby, conference room, or any other space.

Video walls are relatively new. But LCD technology has had decades of mainstream adoption, and with that comes both familiarity and lower costs. If those are important to you, then an LCD video wall is likely the right choice.

LED video walls are similar to LCD video walls, but the digital canvas is built using LED panels. Individual LED panels can be anywhere from 12”x12” to 36”x18”, which is much smaller than LCD displays. LED panels have a larger presence in this world than most might think—they are found indoors and outdoors at stadiums, arenas, concert venues, airports, and in use as large digital advertisements in iconic places such as Times Square.

The module is a small rectangular board that contains all the individual LEDs (light-emitting diodes).Unlike LCD, there is no glass or color filter on the LED video wall panels. The individual diodes that are placed on the modules produce both color and light.

One of the most impressive features of LED panels is that they can be combined to create almost any shape, without a bezel interrupting the digital canvas. LED video wall panels can be placed on curved surfaces, 90-degree edges, and other non-standard surfaces. The smaller size of the panels in relation to LCD video wall displays means they can fill more space on a surface—they aren’t limited to standard 46” and 55” sizes as are LCD video wall displays.

The most important factor to consider when scoping LED panels for a video wall is what is referred to as “pixel pitch.” The pixel pitch is effectively the distance between each pixel on the LED panel—a pixel pitch of 6mm means each pixel is spaced 6 millimeters away from the adjacent pixel. The smaller the pixel pitch, the smaller the distance is between each pixel, which means there are more pixels per square inch on the digital canvas.

Multiply the pixel pitch by 10 for the idealviewing experience –For example, a pixel pitch of 4mm would require a viewer to be 12 feet away to decipher any details in the video wall, and 40 feet away for the best viewing experience.

Lastly, pixel pitch impacts the price of the LED video wall more than any other factor. For example, a 2mm pixel pitch LED video wall costs significantly more than its 10mm pixel pitch counterpart.

As is the case with an LCD video wall, an LED video wall will add exciting drama and premium value to showcase spaces. LED panel displays don’t enjoy the benefit of decades of mainstream adoption as do their LCD counterparts. However, the technology curve is increasing their availability and lowering their costs. At this time, an LED video wall will have higher upfront costs compared to an LCD video wall. If cost is the main concern, then an LED video wall system will not likely fit into your budget

An LED video wall would be well-suited and cost-justified if the intent of the video wall is to provide an immersive viewing experience from a further distance. This could be content with lots of movement, animation, imagery, and bright colors to draw viewers into your space or provide a unique experience.

Aside from LED video wall cost, there are other factors to consider which could make an LED video wall system the frontrunner for your project. Here are the advantages and disadvantages to consider:

Limitless shapes and sizes:the smaller size of LED panels allows them to be combined to create unique canvases, including curved, 90-degree edge, and other combinations not possible with LCD displays

Easy maintenance and service; high reliability:LED module replacement takes seconds with little effort; LED panels are rated with a lifetime of 80,000-100,000 hours, depending on the product

Video wall systems come in all shapes and sizes. The components used to create the video wall experience vary widely. Consider variables other than video wall cost when scoping out both the content and the hardware. Because these parts and pieces could make or break the captive viewing experience you’re hoping to achieve, or worse, defeat the entire purpose of that video wall.

So if you’re looking to buy a video wall in the next year, talk to us about your plans. We’ll discuss your goals and options to determine what digital video wall package and digital directory elements are right for you. Contact us today to get a free video wall consultation.

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Curate content from multiple social media platforms and show it off on a social media display. Integrate the social wall on your digital signage device for more interactive content.Learn more

Use a live event social wall at your event to connect with your audience and create a sense of community. Highlight speakers and workshops or sell ad space to your sponsors.Learn more

Collect and display all social media content from your hashtag campaign in one place. Showcase the best posts, photos and videos from multiple social platforms on a live hashtag wall.Learn more

Collect photos and videos from Instagram on an Instagram wall. Highlight the best posts on your company website or feature it on a display during your event.Learn more

Use a private social wall for occasions that you don’t want to share with the public. Collect posts from your guests on a private social wall to create a unique experience.Learn more

Showcase social media content that represents your company and its core values on an internal communication social wall. Connect with employees, attract new candidates and create a sense of community.Learn more

Aggregate content from Twitter accounts and hashtags on a Twitter wall. It’s a great way to let the fantastic content you and your fans are creating shine.Learn more

Offer an interactive and engaging experience by integrating a social wall into your virtual event set-up. Use a virtual event social wall to connect with your attendees and speakers, and make your event more engaging.Learn more

Add a virtual photo booth to your social wall and boost engagement at events with branded selfies. You can customize a virtual photo booth to fit your every need and embed it on your favorite event platform or website.Learn more

Let employees tell your employer brand’s story. A social wall will help you present the best of your company to the world using a mix of brand and employee-generated content.Learn more

I have one of the earrrly pi’s (256MB), and running kweb browser (for minimal browser size). When the picture changes, I get a scroll bar in the browser which stays up for about 1-2 seconds, then leaves, and the picture resizes to full-screen. Does Chromium do this??

I have a V1 Pi so I downloaded Wheezy. Everything worked fine except I can’t get it to launch automatically into the browser and full screen when turned on. Would I need to change where it says ‘chromium’ to ‘ephinany’?

Hi Jamie, in Raspbian Wheezy, the autostart file is here: /etc/xdg/lxsession/LXDE-pi/autostart. So you’ll want to add your commands there. I’m not sure of the command for epiphany in full screen. You might want to install Chromium if possible!

I was actually wondering if it would be possible to make a picture wall with several different sized screens like the guys did with PiWall only in stead of video with pictures from Instagram/Flickr etc. and if I would need the same setup eg: one pi per screen and a master?

i have completed the diy dakboard and im having a issue where i have to expand the browser to full screen after it boots and loads the browser. Any idea’s? Thank you David

Hey Simon, no problem! You’ll want to use the “–kiosk” flag in the autostart file to start chromium in full screen (removing the address bar). The –noerrdialogs and –incognito flags should hide those shut down messages.

Another idea is to allow for a set of user-customizable links on DAKboard. Some kind of a custom launcher with icons. The links should open full page but retain the links launcher as an overlay to be able to easily navigate back.

Hey Thank you for the help today with the full screen issue i was having I have built two of the dakboards total one for my household and one for my dads house. I am very interested in the rss feed option. I hope you enjoy the two beers. Thanks again.

I got this up and running on a 27″ Acer monitor K272HL that is working really well (and was only $129 at Microcenter). I ended up leaving the back on but drilling a hole to use with a screw into drywall. It’s holding fine! The only downside with this monitor that I’ve found is that the power supply is internal so I couldn’t splice in a 5v USB for the Pi. I had to power it anyway so I installed a recessed outlet behind it.

However, I just found DAKboard yesterday and LOVED IT immediately. Such a beautiful interface. I loaded it up on a fullscreen browser in Android on the MM. Unfortunately, the interface is just way too small for that small of a screen. The scaling isn’t right, and I’m hoping that is a feature that can be added later to adapt to smaller screens so I can use it in the future. I would love to be able to have a few screens around the house too displaying some more ‘custom’ information or RSS feeds. Thank you Dan, I’ll be following the project!

I have messed up at the point where I wrote the code for the autostart part. I successfully get back to Terminal to rewrite it, but something is still wrong and I’m only getting the Incognito screen with no Dakboard. The background is black when i remove -kiosk. How do I remove the autostart all together it so it reboots to the Raspbian GUI home again?

I would like the hang this next to a desk where a power outlet is about two feet away. Is there a single picture in existence of a Dakboard connected to a power supply that is actually hanging on a wall? I want to know what I’m dealing with in terms of the 5′ cord.

Finally, why the long refresh times, other than to make people go premium? Why not just sell a fully customizable “buy once and be done” model? Everything is a subscription model these days, very frustrating.

Everything works but my browser (Chromium) will not auto-login at DAKboard. I have saved my login in my browser, I have pasted my private-URL adress in command line but after reboot I see DAKboard loginpage in fullscreen?

As an extraordinary digital wall display with a simple full glass design, INDOOR WALL MOUNTED DISPLAY -WI300L promoted by Uniview is equipped with diverse installations for customers including wall-mounted, ceiling hanging, and cart-mounted, which is going to meet different users’ demand. Plentiful functions like portrait and landscape are optional and supported which shall be the initial choice of commercial display application.

The Wall Mounted LCD Advertising display systems are specially designed LCD advertising displays perfect for almost each digital signage solution on POI and POS. Cinema, Banks, Car Showrooms, Hotels, Shopping Malls, Metro Station, Airports, Hyper Market, Showrooms. Relying on its Multi-system and multi-port selection as well as the smart menu application, this video wall screen has gone popular around the world since a long time ago aiming at increasing the relevant technology to build a better product.

Shopping for a new TV is like wading through a never-ending pool of tech jargon, display terminology, and head-spinning acronyms. It was one thing when 4K resolution landed in the homes of consumers, with TV brands touting the new UHD viewing spec as a major marketing grab. But over the last several years, the plot has only continued to thicken when it comes to three- and four-letter acronyms with the introduction of state-of-the-art lighting and screen technology. But between OLEDs, QLEDs, mini-LEDs, and now QD-OLEDs, there’s one battle of words that rests at the core of TV vocabulary: LED versus LCD.

Despite having a different acronym, LED TV is just a specific type of LCD TV, which uses a liquid crystal display (LCD) panel to control where light is displayed on your screen. These panels are typically composed of two sheets of polarizing material with a liquid crystal solution between them. When an electric current passes through the liquid, it causes the crystals to align, so that light can (or can’t) pass through. Think of it as a shutter, either allowing light to pass through or blocking it out.

Since both LED and LCD TVs are based around LCD technology, the question remains: what is the difference? Actually, it’s about what the difference was. Older LCD TVs used cold cathode fluorescent lamps (CCFLs) to provide lighting, whereas LED LCD TVs used an array of smaller, more efficient light-emitting diodes (LEDs) to illuminate the screen.

Since the technology is better, all LCD TVs now use LED lights and are colloquially considered LED TVs. For those interested, we’ll go deeper into backlighting below, or you can move onto the Local Dimming section.

Three basic illumination forms have been used in LCD TVs: CCFL backlighting, full-array LED backlighting, and LED edge lighting. Each of these illumination technologies is different from one another in important ways. Let’s dig into each.

CCFL backlighting is an older, now-abandoned form of display technology in which a series of cold cathode lamps sit across the inside of the TV behind the LCD. The lights illuminate the crystals fairly evenly, which means all regions of the picture will have similar brightness levels. This affects some aspects of picture quality, which we discuss in more detail below. Since CCFLs are larger than LED arrays, CCFL-based LCD TVs are thicker than LED-backlit LCD TVs.

Full-array backlighting swaps the outdated CCFLs for an array of LEDs spanning the back of the screen, comprising zones of LEDs that can be lit or dimmed in a process called local dimming. TVs using full-array LED backlighting to make up a healthy chunk of the high-end LED TV market, and with good reason — with more precise and even illumination, they can create better picture quality than CCFL LCD TVs were ever able to achieve, with better energy efficiency to boot.

Another form of LCD screen illumination is LED edge lighting. As the name implies, edge-lit TVs have LEDs along the edges of a screen. There are a few different configurations, including LEDs along just the bottom, LEDs on the top and bottom, LEDs left and right, and LEDs along all four edges. These different configurations result in picture quality differences, but the overall brightness capabilities still exceed what CCFL LCD TVs could achieve. While there are some drawbacks to edge lighting compared to full-array or direct backlight displays, the upshot is edge lighting that allows manufacturers to make thinner TVs that cost less to manufacture.

To better close the local-dimming quality gap between edge-lit TVs and full-array back-lit TVs, manufacturers like Sony and Samsung developed their own advanced edge lighting forms. Sony’s technology is known as “Slim Backlight Master Drive,” while Samsung has “Infinite Array” employed in its line of QLED TVs. These keep the slim form factor achievable through edge-lit design and local dimming quality more on par with full-array backlighting.

Local dimming is a feature of LED LCD TVs wherein the LED light source behind the LCD is dimmed and illuminated to match what the picture demands. LCDs can’t completely prevent light from passing through, even during dark scenes, so dimming the light source itself aids in creating deeper blacks and more impressive contrast in the picture. This is accomplished by selectively dimming the LEDs when that particular part of the picture — or region — is intended to be dark.

Local dimming helps LED/LCD TVs more closely match the quality of modern OLED displays, which feature better contrast levels by their nature — something CCFL LCD TVs couldn’t do. The quality of local dimming varies depending on which type of backlighting your LCD uses, how many individual zones of backlighting are employed, and the quality of the processing. Here’s an overview of how effective local dimming is on each type of LCD TV.

TVs with full-array backlighting have the most accurate local dimming and therefore tend to offer the best contrast. Since an array of LEDs spans the entire back of the LCD screen, regions can generally be dimmed with more finesse than on edge-lit TVs, and brightness tends to be uniform across the entire screen. Hisense’s impressive U7G TVs are great examples of relatively affordable models that use multiple-zone, full-array backlighting with local dimming.

“Direct local dimming” is essentially the same thing as full-array dimming, just with fewer LEDs spread further apart in the array. However, it’s worth noting that many manufacturers do not differentiate “direct local dimming” from full-array dimming as two separate forms of local dimming. We still feel it’s important to note the difference, as fewer, further-spaced LEDs will not have the same accuracy and consistency as full-array displays.

Because edge lighting employs LEDs positioned on the edge or edges of the screen to project light across the back of the LCD screen, as opposed to coming from directly behind it, it can result in very subtle blocks or bands of lighter pixels within or around areas that should be dark. The local dimming of edge-lit TVs can sometimes result in some murkiness in dark areas compared with full-array LED TVs. It should also be noted that not all LED edge-lit TVs offer local dimming, which is why it is not uncommon to see glowing strips of light at the edges of a TV and less brightness toward the center of the screen.

Since CCFL backlit TVs do not use LEDs, models with this lighting style do not have dimming abilities. Instead, the LCD panel of CCFL LCDs is constantly and evenly illuminated, making a noticeable difference in picture quality compared to LED LCDs. This is especially noticeable in scenes with high contrast, as the dark portions of the picture may appear too bright or washed out. When watching in a well-lit room, it’s easier to ignore or miss the difference, but in a dark room, it will be, well, glaring.

An OLED display uses a panel of pixel-sized organic compounds that respond to electricity. Since each tiny pixel (millions of which are present in modern displays) can be turned on or off individually, OLED displays are called “emissive” displays (meaning they require no backlight). They offer incredibly deep contrast ratios and better per-pixel accuracy than any other display type on the market.

Because they don’t require a separate light source, OLED displays are also amazingly thin — often just a few millimeters. OLED panels are often found on high-end TVs in place of LED/LCD technology, but that doesn’t mean that LED/LCDs aren’t without their own premium technology.

QLED is a premium tier of LED/LCD TVs from Samsung. Unlike OLED displays, QLED is not a so-called emissive display technology (lights still illuminate QLED pixels from behind). However, QLED TVs feature an updated illumination technology over regular LED LCDs in the form of Quantum Dot material (hence the “Q” in QLED), which raises overall efficiency and brightness. This translates to better, brighter grayscale and color and enhances HDR (High Dynamic Range) abilities.

And now to make things extra confusing, part of Samsung’s 2022 TV lineup is being billed as traditional OLEDs, although a deeper dive will reveal this is actually the company’s first foray into a new panel technology altogether called QD-OLED.

Advanced LED video wall with MicroLED models in 0.6, 0.7 and 0.9mm pixel pitches, and 1.2mm pixel pitch standard LED; with powerful processing, proprietary alignment technology and off-board electronics.

Planar® CarbonLight™ VX Series is comprised of carbon fiber-framed indoor LED video wall and floor displays with exceptional on-camera visual properties and deployment versatility, available in 1.9 and 2.6mm pixel pitch (wall) and 2.6mm (floor).

Advanced LED video wall with MicroLED models in 0.6, 0.7 and 0.9mm pixel pitches, and 1.2mm pixel pitch standard LED; with powerful processing, proprietary alignment technology and off-board electronics.

Advanced LED video wall with MicroLED models in 0.6, 0.7 and 0.9mm pixel pitches, and 1.2mm pixel pitch standard LED; with powerful processing, proprietary alignment technology and off-board electronics.

LED video wall solution with advanced video wall processing, off-board electronics, front serviceable cabinets and outstanding image quality available in 0.9mm pixel pitch

Planar® CarbonLight™ VX Series is comprised of carbon fiber-framed indoor LED video wall and floor displays with exceptional on-camera visual properties and deployment versatility, available in 1.9 and 2.6mm pixel pitch (wall) and 2.6mm (floor).

Carbon fiber-framed indoor LED video wall and floor displays with exceptional on-camera visual properties and deployment versatility for various installations including virtual production and extended reality.

a line of extreme and ultra-narrow bezel LCD displays that provides a video wall solution for demanding requirements of 24x7 mission-critical applications and high ambient light environments

Since 1983, Planar display solutions have benefitted countless organizations in every application. Planar displays are usually front and center, dutifully delivering the visual experiences and critical information customers need, with proven technology that is built to withstand the rigors of constant use.