Lianchengfa outdoor media screen S series has the characteristics of high color reproduction, high water resistance, double backup of signal power supply, convenient and quick maintenance, etc.

　　 The acceptance of outdoor full-color LED displays generally starts from six aspects: color reproducibility, color difference, mosaic phenomenon, brightness and viewing angle, and white balance effect.

　　1. Color reproducibility Color reproducibility refers to the reproducibility 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.

2. 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.

　　3. Whether there is mosaic or dead spots. 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 enough. Dead point refers to a single point that is always bright or black that appears on the LED display. The number of dead points is mainly determined by the quality of the die.

　　 4. flatness The flatness of the surface of the LED display should be within ±1mm to ensure that the displayed image is not distorted, and local 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. Brightness and viewing angle The brightness of the indoor full-color screen must be above 800cd/m2, and the brightness of the outdoor full-color screen must be above 1500cd/m2 to ensure the normal operation of the display screen, otherwise it will be difficult to see clearly because the brightness is too low. The displayed image. 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.

　　 6. 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 there is a slight deviation in the actual ratio, there will be a deviation in the white balance. 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.

　　 The above six points are the basic acceptance points, and also the most direct and comprehensive acceptance direction. Each suitable LED display must be designed, produced, and aging tested before it can be used in the market.