There are also more and more LED products, such as the familiar full-color LED display, small-pitch LED Display, transparent screen and so on. Therefore, how to distinguish between the good and the bad of the LED display has become a thorny issue for the majority of users. Today, I will take everyone to understand how to distinguish.
The brightness of the display screen is generally reflected in the outdoor screen. Because the outdoor screen is outdoors, it has to withstand more tests than the incoming water. The brightness of a normal outdoor full-color screen should be above 1200cd/㎡-2000cd/㎡, and the current brightness of conventional lamp beads can reach this level.
2. Balance effect
The balance effect is an important indicator that cannot be ignored for LED screens. Now most of the shoddy manufacturers are not very clear about this indicator. In color science, pure white will be displayed when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16. If there is a slight deviation in the actual ratio, there will be a deviation in white balance. Generally, pay attention to whether the white is blue or yellow Green phenomenon.
3. Color reproduction
The color reducibility of the display screen refers to the reducibility of the screen color, which means that the color displayed on the screen must be highly consistent with the color of the playback source, so as to ensure that the image displayed on the display screen is stable and true.
4. Whether there is a dead point
The dead point we often say refers to a single point that appears on the screen that is always on or black. The number of dead points is mainly determined by the quality of the lamp beads. Generally, the use of braided genuine lights will not cause mass death. The problem of the lamp, and some dead lamps are caused by virtual soldering during the patch. If there is a dead point on the screen, it will greatly affect the visual effect of our viewing, so if it is found, it must be solved immediately.
5. Whether there are color blocks
Color block refers to the obvious color difference between adjacent modules. The color transition is based on the module. If the color block occurs, it is mostly caused by poor control system or low gray level of the screen.
6. Screen flatness
Regarding the flatness of the display screen, this does not require a professional user, because it is only visible to anyone with eyes. The normal flatness of the display should be within ±0.1mm, so as to ensure that the image broadcast on the screen will not be distorted, but local protrusions or recesses will cause a blind spot in the viewing angle of the display. It is best to ensure that there is no gap between the module and the module during the installation process. The display screen below P3 should pay special attention to this problem when assembling. If there is a gap between the module and the module, it will be very difficult to play the screen. You may see black lines.