Check the basic points of LED full-color large screen

"Basic Points of Inspection of LED Full-color Large Screen" LED large screen is one of our common display screens. LED full-color screen is the most promising large screen in the future. With many functions and effects, nowadays, whether it is outdoors or indoors, LED large screens have been recognized by people. For the production of LED large screens, as a customer, what are the key points of LED large screens that are worth observing and explaining. 1. In general, the acceptance of outdoor LED large screens is generally explained from the following six aspects: color block color difference, color reducibility, brightness and viewing angle, mosaic phenomenon, and white balance effect. 2. The presence or absence of color blocks 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 poor control system, low gray level, and large led screen. Caused by low scanning frequency. 3. Color restoration The color restoration refers to the color restoration of the LED large screen, that is, the color displayed on the large screen must be highly consistent with the color of the playback source, so as to ensure the realism of the image. 4. Flatness: The surface flatness of the large LED screen should be within ±1mm to ensure that the displayed image is not distorted. Partial protrusions or recesses will cause dead angles in the viewing angle of the large LED screen. The quality of flatness is mainly determined by the production process. 5. White balance effect: White balance effect is one of the most important indicators of LED large screens. In terms of color science, when the ratio of the three primary colors of red, green and blue is 3.1:5.9:1, pure white will be displayed. If there is a slight deviation in the actual ratio, there will be a deviation in white balance. Generally, it is necessary to pay attention to whether the white is blue or yellowish. green phenomenon. The quality of the white balance of the led large screen is mainly determined by the control system, and the die also affects the reducibility of the color. 6. Brightness and viewing angle The brightness of the indoor LED full-color screen should be above 800cd/m2, and the brightness of the outdoor LED full-color screen should be above 3500cd/m2 to ensure the normal operation of the large LED screen, otherwise it will be difficult to see because the brightness is too low The displayed image is unclear. The brightness is mainly determined by the quality of the LED tube core. The size of the viewing angle directly determines the audience size of the LED large screen, so the bigger the better. The size of the viewing angle is mainly determined by the packaging method of the die. The above 6 points are the basic acceptance points, and also the most direct and comprehensive acceptance direction. Every suitable LED large screen must be designed, produced, and aging tested before it can be used in the market. .