LED transparent screens are having more and more broad market application prospects, automobile 4S stores, mobile phone stores, jewelry stores, brand clothing stores, sports brand stores, catering brand chain stores, brand convenience chain stores, as well as various exhibitions, stage shows Performing arts, etc., in a large number of application scenarios, LED transparent screens appear thin, transparent, and cool.
Transparent screens are currently mainly divided into two categories: positive light-emitting grid light bar screens and side light-emitting light bar screens. So how should we choose these two transparent screens? What are their respective characteristics? Let's give you a specific analysis.
Positive light bar screen
Using conventional packaging lamp beads on the market is the solution adopted by most transparent screen manufacturers. The permeability of the screen is relatively low, the price is low, and the more structural beams affect the appearance.
LED transparent screen
Features of side-emitting light bar screen
Using conventional packaging lamp beads on the market is the solution adopted by most transparent screen manufacturers. The permeability of the screen is relatively low, the price is low, and the more structural beams affect the appearance.
LED transparent screen
Let's compare the pros and cons of these two solutions in detail below.
Permeability comparison
Due to the different positions of the lamp beads, the thickness of the light bar of the positive-emitting transparent screen must be greater than the size of the lamp beads, while the position and space of the side-emitting lamp beads are less restricted. Because the light bar itself blocks the light, the transparency of the side-emitting transparent screen is better than that of the positive light. This is the most obvious advantage of the side-emitting transparent screen.
As shown in the figure, the transmittance comparison of two transparent screens with the same dot pitch:
LED transparent screen
LED transparent screen
Appearance contrast
In order not to block the light, the driver IC of the positive-emitting transparent screen can only be installed on both sides of the light bar. The side-emitting transparent screen does not have this limitation, and the driver IC can be hidden behind the lamp beads. Therefore, the number of lamp beads controlled by the positive-emitting light bar driver IC is limited, which limits the length of the light bar. The entire structure of the positive-emitting transparent screen is lattice-shaped. The single light bar of the side-emitting transparent screen can be made longer. The appearance of the screen is also more beautiful.
LED transparent screen
LED transparent screen
Driver IC usage comparison
The placement of the driver IC of the positive-emitting transparent screen is limited, so it is often necessary to set a higher number of scanning lines, mostly 16 scans and above. The side-emitting transparent screen driver IC is not limited first, and the number of scanning lines can be set lower. For example, YIPLED's side-emitting transparent screen has only 4 scan lines for IC scanning.
The number of scan lines of the display screen is low, the display screen can work under low current, and the refresh rate and gray level are also higher, and the display effect will be better. In order to increase the brightness of the positive-emitting transparent screen, a larger current must be set. In the long run, the reliability of the lamp beads will be lost. At the same time, the loss of refresh rate and gray level will make the display effect a bit inferior.
Comparison of impact resistance
Because the lamp beads are installed in different positions, the impact resistance of the two screens is also different. Under the impact of external force, the positive-emitting lamp beads will directly receive the impact of the external force, while the side-emitting lamp beads will not receive direct force.
LED transparent screen
Lamp bead display performance comparison
Regardless of whether it is a side-emitting lamp bead or a positive-emitting lamp bead, both are TOP-type packages. The difference is only the position of the patch. Therefore, the viewing angle and uniformity of the two lamp beads are actually not significantly different.
As the transparent screen market matures, more and more new products and technical solutions will emerge. According to the current comparison of the two transparent screen solutions, the positive-emitting and the side-emitting transparent screens, it is obvious that the advantages of the side-emitting transparent screen are more obvious, but the price of the positive-emitting display is more competitive. Therefore, how to choose a product program correctly depends on the different requirements of users and varies from person to person.
