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Six elements to determine whether the LED display is normal

by:Toponetech     2021-05-20
Recently, when I visited the customers, they all lamented that our LED displays are excellent in all aspects. How did they decide? Let's take a look at the six elements that determine whether the LED display is normal: brightness and viewing angle, color reproducibility, white balance effect, whether there are color blocks, flatness, whether there are mosaics, and dead spots. The six elements to determine whether the touch display is normal are as follows:    1. Brightness and viewing angle The brightness of the indoor full-color LED display must be above 800cd/m2, and the brightness of the outdoor full-color touch display must be above 1500 cd/m2. Ensure the normal operation of the display screen, otherwise the displayed image will not be seen clearly because the brightness is too low. The size of the brightness is mainly determined by the quality of the LED die. The size of the viewing angle directly determines the audience of the display screen, so the larger the better. The size of the viewing angle is mainly determined by the packaging method of the die.  2, color reproducibility   color reproducibility refers to the reducibility of the color 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, so as to ensure the realism of the image.  3, white balance effect    white balance effect is one of the most important indicators of the display screen. 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 the actual ratio is a little different, the white balance will be deviated. Generally, pay attention to whether the white is blue or yellow. Green phenomenon. The quality of the white balance is mainly determined by the control system of the display, and the die also has an impact on the color reproduction.  4. Flatness  The surface flatness of the display should be within ±1mm to ensure that the displayed image is not distorted. Partial protrusions or recesses will cause a blind spot in the viewing angle of the display. The quality of flatness is mainly determined by the production process.  5. Whether there is mosaic or dead spot phenomenon  Mosaic refers to the small four squares that are always bright or black that appear on the display screen, which is the phenomenon of module necrosis. The main reason is that the quality of the connectors used in the display screen is not good. Dead point refers to a single point that is always bright or black that appears on the display. The number of dead points is mainly determined by the quality of the die. 6. With or without color block Color block refers to the obvious color difference between adjacent modules. The color transition is based on the module. The color block phenomenon is mainly caused by the poor control system, low gray level, and scanning Caused by lower frequency.   check all kinds of touch display, outdoor LED display, indoor LED display for you!
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