It can be said that professional development, design and strict production management are essential for the LED display screen.
1. Flatness the surface flatness of LED display screen should be within ± 1mm to ensure that the display image will not be distorted, and local bulge or concave will cause display
There is a dead angle in the visual angle of the display screen. The flatness is mainly determined by the production process.
2. [Shenzhen LED display] brightness and visual angle the brightness of indoor full-color screen should be more than 800cd / m2, and that of outdoor full-color screen should be at least 800 CD / m2
1500 CD / m2 above, to ensure the normal operation of the display screen, or because the brightness is too low to see the image displayed. The brightness of the main size
It is decided by the quality of LED core.
the size of the viewing angle directly determines the number of screen audience, so the larger the better. The size of the viewing angle is mainly determined by the packaging mode of the die
3. White balance effect white balance effect is one of the most important indicators of display screen. When the ratio of red, green and blue is 1:4.6:0.16
Will show pure white, if the actual proportion has a little deviation, there will be a deviation in the white balance, generally pay attention to whether the white is blue, partial
Yellow green phenomenon. The quality of white balance is mainly determined by the control system of the display screen, and the tube core also has an impact on the color reducibility. [LED display price
Color reducibility refers to the color restoration of the display screen, that is, the color displayed on the display screen should keep high
with the color of the playback source
In order to ensure the authenticity of the image.
5. There are * * SEG and dead point phenomenon. Mosaic refers to the small four squares which are usually bright or black on the display screen, which is not only the module necrosis phenomenon, but also the main reason
Because the quality of the connector used in the display screen is not up to standard.
the above five points can help you to make a reference when purchasing LED display screen, but even if the quality is up to standard, please pay attention to the product