LED video wall is a large-screen display product that is widely used at present. It can be used in a wide range of environments, both indoor and outdoor. How to distinguish the quality and quality of full-color display? The specific methods are summarized below.
1. White balance effect
Whether the white balance is good depends on the control system of the display screen, so pay attention to whether the white has dark blue or yellowish green.
2. Flatness
The display uniformity of led display screen should be within ± 1mm, which reflects the manufacturer’s ability in detail and production technology. If the flatness of the display screen is poor, the visual angle of the display screen will appear dead angle.
3. Reductivity of color
When the color displayed on the led display screen in the conference room should be highly consistent with the color of the playback source, so as to ensure the authenticity of the image.
4. Is there any color difference
Whether there is 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 low scanning frequency.
5. Whether there are mosaic and dead spots
The main reason for the necrosis of the existing modules is that the quality of the connectors used for the led display screen is not up to standard. Dead spots refer to the single spots that are always bright or dark on the display screen. The number of dead spots is mainly determined by the quality of the tube core.
