A full-color screen is only as good from the main to the signing of the following:

1. Flatness

The display on the surface roughness to less than ± 1mm to ensure that the images showed no distortion, recessed or raised locally will lead to the visual display appeared dead angle. The quality of the flatness of the main production process by the decision.

2. Brightness and viewing angle

Indoor full-color screen brightness to 800cd / m² and above, the outdoor full-color screen brightness to 1500 cd / m² and above, in order to guarantee the normal work of the screen, or because of too low brightness blind shown in the image. Brightness LED mainly by the size of the die is good or bad decision.
Visual perspective of the size of the screen directly to the audience decide how much, therefore the better. The main visual point of view of the size of the die from the package to decide.

3. White Balance effect

White Balance screen effect is one of the most important indicators. Red-green-blue school colors taken a ratio of three primary colors when 1:4.6:0.16 show pure white, if the proportion of actual bias that may arise in the white balance bias, the general must pay attention to whether there is a white-blue, partial Yellow-green phenomenon. White balance of good and bad from the main screen of the control system to decide, die on the reduction of color also have an impact.

4. Reductive color

Reducing the color is the color display on the reduction of both the color display screen to play with the source of color maintain a high degree of consensus in order to ensure that realistic images.

5. Whether the mosaic, the phenomenon of dead spots

Mosaic is the screen appears Always or often four small black box, both modules necrosis, mainly used for the display quality is the connector.
Death is the point of display liang appear on the regular black or a single point, the number of dead center main die by the quality of the decision.

6. Any color

Color refers to the adjacent module between the more obvious color, the color of the transition to a modular unit, the color is caused mainly by poor control system, the gray level is not high, caused by lower Scanning Frequency .