1: Flatness: The flatness of the surface of the led screen wall rental from the China manufacturer should be within ±1mm to ensure that the displayed image is not distorted. Partial bulges or recesses will cause a dead angle in the viewing angle of the display.
2: Brightness and viewing angle: The brightness is mainly determined by the size of the LED die crystal. The size of the viewing angle directly determines the audience of the led screen wall rental from China manufacturer, so the larger the angle, the better.3: White balance effect: White balance effect is one of the most important indicators of the display screen. Generally, it is necessary to pay attention to whether the white is bluish or yellowish green. The quality of the white balance is mainly determined by the control system of the led screen wall rental from China manufacturer, and the die also has an impact on the reproducibility of the color.
4: Whether there is color block and color difference: Color block refers to the obvious color difference between adjacent modules, and the color transition is in units of modules. The main reason for the color block phenomenon is that the control system of the led screen wall rental from China manufacturer is poor and gray, the degree level is not high, and the scanning frequency is low.
5: Color reducibility: This refers to the color reducibility of the LED display, that is, the color displayed on the display must be highly consistent with the color of the playback source, so as to ensure the authenticity of the image.
6: Is there any phenomenon of secrecy and dead point: Mosaic refers to the effect of the uneven color of the unit module on the led screen wall rental from China manufacturer. Small squares that are always bright or always black, that is, the phenomenon of module necrosis, the main reason is the display The quality of the connectors used in the screen is not good enough. A dead point refers to a single point that is always bright or always black on the led screen wall rental from a China manufacturer. The number of dead points is mainly determined by the quality of the die.