How to choose a Led display? Selection criteria

In this article, LED&Go explains the elements to take into account in a project when choosing an Led screen and that attend to the brightness, pixel pitch, dimensions, transparency and encapsulation.

Las pantallas Led son una herramienta indispensable en proyectos de publicidad de gran formato pero además se consideran soluciones tecnológicas que encajan en todo tipo de espacios y aportan un valor añadido a muchos sectores (communication, leisure, retail, Shows, Etc).

Making a proper selection of technology is key to a quality result. LED&go highlights in this article what are the criteria that have to be taken into account to know what type of Led screen is the most appropriate for the project you want to carry out: brightness, pixel pitch, dimensions, transparency and encapsulation.

brightness

Measured in nits or candelas/m2, the brightness of a Led solution represents the light power that the support emits. The brightness value is calculated to counteract the incidence of natural light on the reproduction face of the support and can vary from 1.800 (low or no incidence) up to the 10.000 Nits (direct incidence).

Consequently, the brightness is directly related to the location of the screen. If it is outdoors it should be around the 5.500 Nits; on the contrary, if it is indoor, will vary between the 1.000 and the 2.000 Nits. There is a third type of screen, according to location, are the so-called hybrids because they are equipment designed for solutions in which they receive incidence of natural light but are not found outside, as can be the case of shop windows. In the latter case the brightness should vary between the 2.000 and 4.000 Nits.

It is very important to properly regulate the brightness for the correct visualization of the contents on a Led screen, although the more light power is required the faster the life of the screen will decrease although this depends on many other factors.

Outdoor Led screens must be designed to withstand the atmospheric conditions of the place. This implies that they will be formed with high permeability panels and have outdoor protection. These features can increase the price, however, outdoor screens do not normally require as much resolution as indoor screens thus balancing their price.

Pixel Pitch

The pixel pitch represents the physical separation between Led, directly associated with the resolution of the support (the lower pixel pitch the higher the resolution and vice versa). The viewing distance is the starting point to define the pixel pitch of the solution.

To do this, the minimum viewing distance of the target audience is taken into account and the design of the ideal solution for the correct visualization of the support is carried out.

The closer to the viewers the Led screen is, the higher the resolution it must have and, therefore, a low pitch. However, smaller pixelation is not always required. In solutions in which the viewer will always observe the screen at great distances, it is unnecessary and involves an expenditure of money that will not bring benefit.

dimensions

In Led&Go make each custom Led screen design and, in terms of design and engineering, the dimensions of the screen are a very important factor to take into account.

The solution must be designed by adapting it to the dimensions of the location and the base measurements of the Led modules. Each technology has standardized dimensions that go hand in hand with the optimization of electrical and electronic elements.

For projects with a high degree of customization, Led modules are custom made. This selection of modules is an added value that will increase your cost.

Economically the size of the Led screen does not directly imply higher price, because the cost value is structured according to the technology to be used and the amount of it. You can have a screen of 4×2 meters with a low resolution, that hovers for example the 15.000 px/m2, that costs the same as another 2×1 meters with high resolution, approximately 60.000 px/m2.

Transparency

There are solutions to which a certain degree of transparency can be applied, either by creating spaces between the LeDs or by using modules whose manufacturing material is translucent. For these options, the client's need to see through the screen or allow natural light to pass through it is considered..

Led Encapsulation

The encapsulation of led solutions is associated with the type of integration of the bulbs on the motherboard or module. Depending on the package, solutions vary between two presentations: DIP and MDS.

In the first case each color of the RGB system is represented by a Led bulb. Having the three independent bulbs results in much more brightness. Its drawback is that it does not allow to be used in solutions with very high resolution.

SMD integrates in the same Led the three colors of the RGB system (red, green and blue), allowing smaller resolutions, but less brightness. This is usually used indoors and the DIP encapsulation for outdoor, although this is not always the case.

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