STAR EPBAX SYSTEM’s Video wall display solutions are always available at the highest quality in the market. Available in various technologies (LCD, LED rear projection and RGB laser rear projection), sizes and resolutions, our portfolio is always the best solution for your application. Our range of dedicated software and professional services ensures that you get the most out of your video wall.
What is a Video Wall?
A video wall (also known as a display wall) is a visualization level that consists of multiple displays. In fact, it consisted of several televisions or monitors that were closely held together. The purpose was to make it look like a large display surface. The problem, however, was a large frame (or bezel) that surrounded the surface of every television’s useful display. It completely ripped off the effects of the same canvas and degraded the visual performance. Therefore, new technologies were introduced to minimize the ‘dead pixel space’ between different displays. Today’s display wall solutions are typically using tiled LCD panels, rear projection cubes, or direct LED tiles.
These display walls are available in a wide range of sizes, usually with a screen diameter between 46 “and 80”. The size of the screen depends on the general content and viewing distance. If viewed closely, the pixel density should be high enough to not see individual pixels. The resolution is subject to the wall size. For example, if you want a 4K video wall, you will need 4 full HD screens in a 2 x 2 setup.
Common application areas include control rooms, meeting rooms, digital signage and other demanding environments.
Although these different technologies have different features responding to the specific needs of the users, they have many things in common. All of them:
A video wall controller is required to capture content on screens
Are very flexible about size (number of individual displays)
The calibration mechanism is needed to ensure that individual tiles have the same brightness and color settings. Barco’s automatic calibration technology does this in real time, with both calibrating single displays and entire walls.
Requires at least inter-tile grip (or extremely tight bezel) to counter the ‘raster effect’.
LCD Video Wall
An LCD video wall consists of several specially designed LCD displays. Unlike panels used in television sets, these LCD displays have very narrow bezels. This reduces the gap between the panels, making it look more like a large canvas. Over the years, this gap has gradually diminished. Today, Barco is the smallest space in the Uni industry.
LCD video walls are designed for long-term use. In most cases, applying specific measures to prevent the effects of burns allows them to play for many years. Many times, they play in continuous 24/7 mode, which means they rarely stop.
The traditional advantages of LCD video wall solutions include high brightness, good image quality and relatively low cost. Plus the need for limited real estate space is a plus. The disadvantages are the risk of burns and short life. However, recent models have successfully reduced these drawbacks.
LCD Display Wall Lounges General markets include meeting and crisis rooms, lobbies and experience centers. You can also find them in the control rooms of the traffic and security centers.
Rear projection video walls
Rear projection video walls target different applications, using projection rather than LCD technology. They are mainly used in control rooms that work in 24/7 mode. For example utility providers rely on backward projection technology to monitor their network.
A projection video wall consists of multiple cubes, featuring a projector and screen. Projectors are positioned upwards. The mirror below the 45 ° angle then reflects the image and puts it on the projection screen. In this way, the required depth is cut dramatically. For example, Barco’s Overview ODLF series only requires 60 cm / 23.6 depth. This advanced video wall can also be presented from the front, so no rear maintenance area is required.
Advantages of this technology include very high life, absence of burning effects and narrow distance between cubes. Traditional drawbacks include limited brightness and real estate space. Barco has solved many of these problems by introducing laser video walls.
LED video walls
Direct theory LED technology is used to create extremely impressive video walls. They are very bright and are mainly used to wow the audience. For example, in retail and advertising settings, LED video walls are used during the spectacle or live performances. LED display tiles contain many individual color LEDs. Pixel pitches can be quite large when viewed remotely (for example for live performances), or very small.
High brightness, absence of inter-tile intervals and impressive color are the main advantages of DirectView LED technology. Also some depth and weight can be important in some settings. Disadvantages are high cost and power consumption.