Chapter 4

LED, LCD, Projectors or TV's: What's the Best Option for Your Video Wall?

There are a variety of display options for video walls today. The two most common are LED displays and commercial LCD panels. Before discussing LED and LCD, it’s worth a quick glance at two other options: consumer TV’s and blended projection.

Can I make a video wall with TV's?

Consumer TV’s have a few potential problems worth understanding: They have wider bezels than commercial displays and they also tend to have a thicker bottom bezel. Why does this matter? Well, this creates the risk of an uneven bezel line where the lines created by the bottom of the displays are thicker than the vertical lines between panels.

Here is how to avoid this:

One way is to flip the top row of displays so they are upside down and the thicker bezel is on the top of the video wall.

But there is a catch. This will not work when using three rows or more as the middle row obviously cannot be flipped. With all that said, the main reason to make a video wall with TV’s is because they are certainly signficantly less expensive than commercial displays. If budget is a constraint for your video wall project, TV's are a great alternative for your deployment.

Using Projectors for Video Walls

Blended Projection uses a controller or processor to connect multiple front or rear display projectors to create a seamless display wall. The benefit of blended projection is that the canvas has no visible bezels.

Direct View LED Video Walls

LED video walls are common for outdoor use where viewing is usually from a distance. They have a brightness advantage over LCD panels, but a sitnificant disadvantge when it comes to resolution and image quality.

Where can you actually use and LED Display? They’re ideal for large outdoor displays where brightness is important but image quality and resoulution isn’t as important (due to viewing distance). However... For indoor video walls or for video walls where resolution and visual performance are important, Large Format Displays (LFDs) are required.

Large Video Walls Can Be Made with LED or LCD Displays

Commercial large format displays with zero bezel, narrow bezel or ultra narrow bezel are the preferred option for video walls. These can be LCD or LED (typically OLED or MicroLED).

Here is the deal. LED based commercial displays tend to offer high resolution and better brightness and a wider range of colours and typically have slimmer bezels. However they are also very significantly more expensive than backlit LCD displays.

As a result, large format LCD commercial displays continue to be the prefered option for most video wall systems today. 55" is one of the most common sizes but 60" and even 70" displays are available as well.