Frequently Asked Questions

  1. What is a LED?

    LED (an abbreviation for light-emitting diode) is a semiconductor that emits visible light. That light is caused by the electrons flowing between the anode and cathode. The color of the visual emission depends on the used material.

    The LED doesn’t have a filament and therefore has a larger live and a higher reliability in comparison to traditional lights.

  2. What is a PIXEL?

    A pixel (an abbreviation for picture element), is a single point in any image. A pixel is present on every LED solution. It can be composed by one or more LEDs, depending on the dimensions and characteristics of the device. In the cases of big models, the pixel is commonly composed by many LEDs.

  3. What is a "line pitch"?

    A line pitch, sometimes called dot pitched, is the distance between two pixels in a LED display. That distance is very important, considering that a minimum difference in millimeters can make a big difference in the properties and uses of the screen. The pitch marks the minimum distance viewing, the module definition and the resolution of the entire screen.

  4. What is the difference between SMD and PTH LEDs?

    The difference between these two technologies is that the SMD components are mounted on the surface of the electronic board, but they do not pass through the board like the precedent technology, the PTH technology. In spite of this, the main difference is that the SMD technology is based on the miniaturization of all electronic components. In that way the SMD technology allow us to place three LEDs (red, blue and green) into the same case, creating what is known as a 3-colors LED. The possibility of viewing three colors in simultaneous allows the creation of big screens with a reduced pixels distance, producing a very high image quality and definition.

  5. What is the RESOLUTION of a LED display?

    The resolution of a LED display is defined by the number of pixels contained in each square meter. As we can see, the resolution is opposite proportional to the distance between pixels. For instance, if we have a lower distance between pixels, the screen will have more pixels, and therefore the resolution will be higher.

  6. What is the DEFINITION of a LED display?

    The definition of a LED display is the number of vertical and horizontal pixels composing the whole screen. For instance, standard low definition modules are 96 x 64 pixels, common medium definition modules are 256 x 192 pixels, while frequent high definition modules are 640 x 480 pixels. As we can see, the Definition is extremely dependent on the distance between pixels. According to that idea a 96 x 64 pixels module has more distance between the pixels than a 640 x 480 pixels module, and that is the reason for the first one to have a lower definition that the second one.

  7. What is the difference between screens with SAME DIMENSIONS but DIFFERENT DEFINITION?

    The difference is defined by the distance from which the image has to be viewed for an optimal image quality. A display with a high definition has the finest quality viewing in short distances, while displays with low definition have the best possible quality viewing in large distances. For instance, in the images we present here, FIG 1 has a higher definition tan FIG 2, but if you watch your monitor from a three meters distance the image quality improves. The reason for this is images with lower definition are ideal for longer distances.

  8. What are considered to be the MINIMUM and MAXIMUM distances for watching a LED screen?

    The minimum and maximum visualization distances for any given LED screen are measured by two factors: the pitch and display surface.

    In the case of finding the minimum distance, we can get it by converting the number of millimeters of the pitch in meters. For instance, a LED screen which has a 20 mm pitch would have a minimum visualization distance of 20 m.

    On the other hand, the maximum visualization distance depends on the display dimensions, and we can calculate it by multiplying for 10 times the total of square meters of any given display. In that case, a 4 x 4 meters display gives a total area of 16 m², so the maximum visualization distance is 160 m. That maximum visualization distance is for the legibility (in that distance we can see legible images). The distance of visibility is two times the legibility distance. So we can say, according to our example, that the images are legible up to 160 m, but visible until 320 m.

    For the maximum distance for the text in the screen, we can say that for each cm of the letter, the text is legible until 5 m. In that case, a 10 cm letter has a legible distance of 50 m.

  9. Is it possible to visualize a VIDEO on a LED display?

    For sure it is! Now, if you want to get a high quality video visualization, the screen must have at least a 192 x 128 pixels definition.

    You have to remember that the Led-G screen can work like a replicate of the monitor of your computer. Everything that appears on your monitor can visualized on the Led-G screen.

  10. What are the COLOR LEVELS?

    Color levels are the spectrum of tones, from opaque to vivid, that any color can have. In the case of the LED visualization field the color levels considered are the ones related to the three primary colors: Red, Green and Blue.