From the process of patching, LED transparent screens are divided into two categories: positive emission and side emission. So which is better, positive emitting or side emitting LED transparent screen? How should I choose? With such a question, let's take a look with the editor of LianmanLED:

At present, most products on the market are still the conventional front-mounted lamp bead method, that is, the positive light-emitting LED transparent screen solution. Although this method has a relatively low permeability, low price, and more structural spans, which affect the appearance, the structure is also relatively Stablize.

Then compare the advantages and disadvantages of the positive and side-emitting LED transparent screen solutions in detail:

1. Permeability

The position of the lamp bead patch is different, and the thickness of the light bar of the positive light-emitting LED transparent screen is larger than the size of the lamp bead, which causes the light bar to block too much. The patch position and space of the side-emitting LED transparent screen lamp beads are small, and the permeability is higher. Generally the same LED transparent screen model, the transparency of the side-emitting LED transparent screen is 5%~10% higher.

2. Structure appearance

Positive light-emitting LED transparent screen driver IC is installed in the middle or both sides of the box. The number of lamp beads controlled by the driver IC is limited, so the length of the light bar is also limited. It is usually made into a square or rectangular box structure, and the box structure looks thicker. . The side-emitting LED transparent screen driver IC is hidden behind the lamp bead, and the single light bar can be made longer, with a more beautiful appearance and lighter weight. In the field of customization, it is obvious that the side-emitting transparent screen has greater advantages and greater flexibility, and can achieve a larger light bar connection structure. At present, LianmanLED can achieve a maximum 6-meter long light bar structure. Of course, the entire screen is simpler and more transparent.

Schematic diagram of the patch method of positive light-emitting LED transparent screen and side-emitting LED transparent screen

3. Protection ability

Due to the different ways of patching the lamp beads, their anti-collision capabilities are also different. For example, in the case of bumps and external forces hitting the screen body, the positive light-emitting LED transparent screen is a plane force. The side-emitting LED transparent screen is the linear force of the light bar. Therefore, the anti-collision ability and positive light emission are more advantageous, but the surface of the screen can be equipped with a transparent PC panel, and the protection ability is worrying.

4. Display effect

Positive light-emitting transparent screens have higher scanning lines, mostly 8 scans and above. The number of scanning lines of the side-emitting LED transparent screen can be set lower. For example, LianmanLED side-emitting LED transparent screen IC scan lines can be set to 4 scans. The number of scanning lines is low, the screen body can work at a lower current, and the refresh rate and gray level are also higher, and the display effect will be better. So from the aspect of display effect, side lighting will be better.

Side-emitting transparent screen because the PCB is in the form of a light bar and placed on the side, the PCB can be made very wide without affecting the transparency. When the PCB is wider, it can pass a larger current for higher brightness, so it can better meet the glass curtain wall. field. However, the PCB placed on the side has a "blind effect". When the front view is changed to the upper and lower view, the hollow rate will be greatly reduced. Another obvious disadvantage is the light leakage behind the lamp beads, which will cause light pollution to the indoor environment during display.

Summarize:

Which is better, positive emitting or side emitting LED transparent screen? Both have their pros and cons. Positive luminescence is more advantageous in terms of protection ability, display without color cast, and box structure; side emitting products have high permeability, high brightness, good heat dissipation, and are convenient for cutting and customization. When choosing a positive-emitting and side-emitting LED transparent screen, it still depends on the specific project, such as the screen spacing, size and area, display requirements, budget costs and other comprehensive considerations. It's not that who is better, a rational choice is the most correct one.