As cost of hardware prices decreased, interactive video walls start becoming very popular in digital signage. To understand video wall technologies, we need to first compare the two main technologies, LED (Light Emitting Diode), and LCD (Liquid Crystal Displays). Until a few years ago LED technology was mostly used in outdoor displays, where it was required to “fight against sunlight” and be seen by observers far away of it. This selection was natural as LED displays are brighter than LCD with standard backlight.
In the last couple of years, LED manufacturers start producing very high resolution with a dot pitch (or pixel pitch) of less than 1mm, making it also a great option for displays where observers are close to the display lighting and staging. The first big question is who needs that. As digital signage technology continues to expand, digital displays are exponentially increasing in size. 664 LG 55-inch LED flat panel displays, supporting a resolution of 32,051 pixels wide by 7,941 pixels is the largest video wall in the world is “Suntec Singapore convention & exhibition centre”.
Fig: Suntec Singapore Convention and Exhibition Centre
So, things are getting big…really big. Video walls aren’t just made for a giant billboard, It can also be used in a variety of places where disseminating information is important and advertising is possible. This can include:
- Auditoriums
- Atrium’s
- Broadcasts on-air
- Concerts and events
- Museums
- Retail
- Universities
- Corporations
- Hospitals
- Casinos
- Hotels
Fortunately, there are a full range of digital signage technologies you can leverage for a video wall solution that works best for your business.
One additional detail you need to consider is the type of digital signage hardware you will be using. Higher-resolution LED is quickly catching up to LCD in popularity due to a decrease in the cost of manufacturing. The two best options for a video wall are direct view (DV) LED displays and ultra-narrow bezel LCDs. Before deciding on which works best for your video wall, you should understand the technologies and costs associated with each.
DIRECT VIEW LED DISPLAY:
A wall of videos isn’t an easy thing to accomplish and it requires smaller units working together to create a bigger picture. Direct view LED displays are comprised of several smaller LED screens mounted on a flat panel as like having more tiles in a mosaic. LED stands for “light-emitting diode” and unlike LCD screens, the LEDs in DV displays produce light themselves. Each LED acts as a tiny bulb that emits color when electrically engaged. Rather than back lighting the images, the LEDs are actually producing them.DV LED displays originally started out as monochrome and were often used in outdoor digital signage. When RGB color LEDs hit the market in the late 90s, everything changed.
Fig: This figure shown a lot of small tiles create a giant mosaic
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