SMD Screen, Many customers are unsure how to choose the most cost-effective product when confronted with the dazzling array of full-color displays produced by many LED display manufacturers on the market. Today, the editor from Launching will lead everyone in an analysis and discussion of the benefits and drawbacks of full-color SMD Screen.
Luminance and viewing angle:
To ensure normal operation of the display screen, the brightness of the indoor full-color LED screen must be greater than 800cd/m2, and the brightness of the outdoor full-color LED screen must be greater than 1500cd/m2. The quality of the LED tube core has the greatest influence on brightness. The size of the viewing angle directly determines the display screen’s audience, so the larger the better. The size of the viewing angle is primarily determined by the die’s packaging method.
Levelness:
To ensure that the displayed image is not distorted, the surface flatness of the LED display should be within 1mm, and local protrusions or recesses will cause dead angles in the display’s viewing angle. The flatness quality is primarily determined by the manufacturing process.
Color removal:
Color reproduction refers to the color restoration of the display screen, which means that the color displayed on the display screen must be highly consistent with the color of the playback source in order to ensure image realism.
The effect of white balance:
The white balance effect is one of the most important display indicators. In color science, pure white is displayed when the ratio of the three primary colors of red, green, and blue is 1:4.6:0.16. There will be a deviation in white balance if the actual ratio deviates slightly. In general, it is necessary to consider whether the white is blue or yellowish. Green occurrence. The control system of the display screen primarily determines the quality of the white balance, and the die also influences color reproduction.
Whether with or without color blocks:
The obvious color difference between adjacent modules is referred to as a color block. The color transition is determined by the module. Color blockage is primarily caused by a poor control system, a low grey level, and a low scanning frequency, SMD Screen.
Is there any mosaics or dead spots?
Mosaic refers to the small squares on the display screen that are always bright or dark, which is caused by module necrosis. The main reason is that the connectors used in the display screen are of poor quality. On an LED display, the dead point is a single point that is always bright or normally black. The number of dead points is primarily determined by the die’s quality.
Identification of wires:
UL certification has been obtained for high-quality wires. Because the manufacturers of full-color LED displays indicate that they are unreliable, the most direct method is to peel off the outer skin and count the number of cores inside! Use 15, 17, 19, or even 20, 30 cores. The multi-core cable module should not be inferior to the 14-core or 11-core modules, and vice versa.
Temperature of lamp beads:
Touch the LED lamp beads with your hands after they have been lit for a while. When the temperature is high, or even hot, it cannot be as stable as when it is low.
The quality of the solder joints:
If the solder joints are full, it indicates that the welding process was successful, and if the brightness is high, it indicates that the solder was properly applied; if it is serious, it is a virtual solder joint, which is prone to poor contact and time-consuming follow-up maintenance.
Full-color LED display light adhesion method:
There are currently two production methods for full-color LED displays: positive light emission and side light emission. Although side-emitting has a relatively high transmittance, market testing of lamp bead packaging technology is required, and the lamp bead emitting light is the lamp bead of the traditional LED display. The quality is very stable aftermarket inspection.
The thickness of the PCB board:
The transmittance of the full-color LED display will be affected if the PCB board emitting light is relatively thick.
Launching compiled the information above on how to identify the benefits and drawbacks of full-color LED displays. I hope it is useful to everyone. At the same time, feel free to correct or add. (LCF) is a national-level specialized small giant enterprise that provides LED display application and solution integration (hardware + software + content + interaction). The main business is divided into four major sections: “Smart City”, “Cultural Tourism Commercial Performance”, “Commercial Display Engineering”, and “Content Technology”. Friends who want to buy LED displays can also get in touch with us. led display manufacturer, a well-known national brand!
