P3.91 LED transparent screen is a commonly used LED transparent screen product on the market. The refreshing function of LED transparent screen is “transparency”. We all know that whether it is a rental LED display or a small-pitch LED display , it is opaque, and it will completely block the back view when viewed from the front.

When the transparent LED display screen is not turned on, it will not affect the display of the surrounding scenery, which is why the transparent LED display screen can occupy the world with the very mature rental LED display, small-pitch display and other LED series products.

One of the decisive factors for the “transparent” LED transparent display screen is “transparency”. Therefore, we will calculate the transparency of the LED transparent screen to select better products. It should be pointed out here that the transparency The rate is closely related to the model of the product.

LED transparent screens
LED transparent screens

Transparency and clarity cannot be achieved at the same time

Let’s take the P3.91 LED display as an example to make a specific analysis

The spacing of the LED transparent screen P3.91 is actually 3.91mm/7.81mm, that is, the spacing between the horizontal lamp beads is 3.91mm, and the vertical lamp bead spacing is 7.81mm. So its pixel density we can calculate (1000÷3.91)×(1000÷7.81)=32256dot/m².

The greater the pixel density, the clearer the display effect, so the P3.91 transparent LED large screen display effect is clear. But the clearer it is, the more expensive the screen per unit area is. This is also easy to understand: because the number of lamp beads per unit area is more, the lamp beads are one of the main factors affecting the price in the transparent screen.

But clarity and transparency are contradictory to some extent. The clearer the screen, the lower the permeability, because the density of the lamp beads and the distance between the light bars become smaller, so the occlusion will increase and the permeability will be lower.

So do we have any solution? Let’s talk about this later, let’s take a look at how the permeability should be calculated.

For customers who have not been exposed to LED transparent screens, the “transparent screen” is definitely a product with enough sense and full of sci-fi colors. Although it is far from the virtual projection technology of movies, it is also a development direction of transparent display screens.

To calculate permeability, first we need to understand the concept of permeability. Transmittance is a physical word, which indicates the efficiency of light transmitted by display devices, etc. The transmittance of a transparent screen is defined as the percentage of the luminous flux actually transmitted by the screen and the luminous flux that is fully transmitted. The simplest calculation formula is: Transmittance = (transparent space/light bar interval)*100%

LED transparent screens
LED transparent screens

The above standards are rough. There is no industry standard for the calculation of the transparency of transparent screens. Therefore, LED transparent screen manufacturers have different calculation methods for the “transparency” or “transmittance” of their own products. Here we Take LED scree as an example, let’s talk about it:

Taking the P12 transparent screen as an example, it is known that the PCB thickness of the light bar is 2m, and the distance between the light bar and the light bar is 12mm, then the light transmission space is 10mm, so the light transmittance=10/12*100%=83.3%

Therefore, the “transparency” in the technical parameters of the LED transparent screen company’s products is the result of a variety of different calculation formulas. Users should actually experience the transparency of the transparent screen when choosing LED transparent screen products. Factors to choose carefully.

At present, the permeability of P3.91 LED transparent screens on the market is usually between 65% and 68%. However, through the optimization of the structure of the power supply box and the light bar, the LED scree further improves the permeability by up to 75% without affecting the quality of the product.

The higher-definition screen is more suitable for close-up viewing. Therefore, the transparent led large screen P3.91 is a screen for close viewing. It is usually suitable for a viewing distance of 4 to 20 meters. Therefore, it is more used in the field of indoor window and shopping mall atrium. The viewing distance in these areas should be short, and the playback clarity is high. And also need a certain permeability.

Overall, P3.91 is the most suitable. Viewed at close range, then the area is generally not very large. Therefore, its application area is mostly within 60 square meters.

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