What are the factors that affect the visual angle of a full color LED display screen?

What is the viewing angle of the LED display screen? What factors are related to the visual angle?
1、 Definition of visual angle of LED display screen: Visual angle refers to the angle at which users can clearly observe all content on the screen from different directions. The visual angle can also be understood as the maximum or minimum angle at which the screen image can be clearly seen. And the visual angle is a reference value, and the visual angle of a full color P3.91 stage LED display screen includes two indicators: horizontal and vertical.

The horizontal viewing angle is based on the vertical normal of the full color LED display screen (i.e. the vertical imaginary line in the middle of the LED display screen), and the displayed image can still be seen normally at a certain angle perpendicular to the left or right of the normal. This angle range is the horizontal viewing angle of the LED display screen; Similarly, if the horizontal normal is used as the reference, the visible angle from top to bottom is called the vertical visible angle. Generally speaking, the visual angle is based on changes in contrast as a reference standard. When the viewing angle increases, the contrast of the displayed image at that position will decrease. However, when the angle increases to a certain extent and the contrast decreases to 10:1, this angle is the maximum viewable angle of the LED display screen.

2、 Factors affecting the visual angle of LED display screens: The larger the range that a full color LED display screen can be seen by the audience, the better, so the larger the visual angle, the better. However, the size of the visual angle is mainly determined by the packaging method of the tube core, so careful consideration must be given when packaging the tube core.
The viewing angle of LED display screens is closely related to the viewing angle and distance, but currently most LED display screen manufacturers are unified. If you customize the angle based on the on-site situation, the cost will be very high. It should be noted that for the same chip, the larger the visual angle, the lower the brightness of the LED display screen.