LED video walls are a popular choice for the brightness, clarity, and scale of their visual impact. They can be installed at a variety of locations to advertise, entertain, or inform the public, or simply to enhance brand image and recognition. They lend themselves to a huge range of content, from live-streaming events to information sharing.
Here are the answers to five of the most frequently asked questions about LED video wall displays.
1. What‘s the definition of an LED video wall?
An LED video wall is created by putting together a series of digital screens or panels to create a single display platform. It can be used to display multiple images, or a single unified image. The displays are made up of a multitude of light-emitting diodes (LEDs) that are illuminated when an electric current passes through a microchip.
Different semiconductor materials are used to produce different colours of light. Up until about 25 years ago, LEDs could only produce a very limited range of colours, and it was not possible to produce blue or white LED light for commercial purposes.
However, technology has now progressed considerably, and LED screens can produce a wide spectrum of colours. When the LEDs are close enough together on the screen, they produce very high contrast, clear and sharp images.
2. What’s the advantage of an LED wall over a projector and screen?
Traditionally, when a large-scale was required, a projector would be used to cast images onto a screen or other surface. However, projectors can be bulky, noisy, and expensive to run. LED video walls have a much brighter display and will look equally good in any environmental conditions, even bright sunlight, and can fit any aspect ratio.
They generate images directly onto the screen, so they look sleeker and take up less space. LED walls also have around twice the life expectancy of a projector, are more energy efficient, and have a low level of maintenance.
3. What is pixel pitch?
Pixel pitch refers to the distance between LEDs on a display screen. The distance is usually measured in millimetres and it matters because it relates to the optimal viewing distance of the display screen. The closer the pixels are together, the more crisp and clear the images will be on the screen.
Therefore a low pixel pitch means that the images will have enhanced clarity and stand up to closer viewer distances with no loss of quality. Higher pixel pitches mean the screen will have a lower resolution, and not be suitable for displaying small text that needs to be read at close quarters.
However, if the content is to be viewed from a long distance of over 20 metres, then a high resolution display loses much of its advantage, so it’s important to consider what the average distance your content will be viewed from before deciding on what pixel pitch to go for.
4. Where can video walls be used?
LED video walls can be used in a variety of ways in both indoor and outdoor settings. For example, they are often used at outdoor events to livestream stage performances, so that people far back in the crowd can still benefit from a clear view. They can also be used to provide background visuals to enhance the performance.
The screens are designed to withstand harsh weather conditions, and the brightness can be adjusted according to the amount of natural light.
LED displays have a wide viewing angle, and it’s possible to read the content even from a significant side perspective in the room. This means that one single central screen can be viewed even in a wide room. It’s also possible to install a curved screen for an even wider-reaching viewing angle, that will be comfortable for observers from any point.
5. How easy are video walls to install?
It’s recommended that LED video walls are professionally installed. The wiring is not particularly complicated in most cases, but is crucial to ensure that all the wall tiles are hung level with an even weight distribution, otherwise there will be gaps and sagging.
It very much depends on the size and location of the installation as well, as obviously hanging a few indoor panels is a much simpler process than assembling a high and wide wall for an outdoor concert. Speak to your supplier who will be able to give you advice about the best installation method for your particular screen.
