For those who don’t understand an industry, there may be some industry names that they don’t understand. Finish the following parts of the LED Electronic Display  to see if they can help everyone.
pixel
Pixel (pictureelement) is the minimum illumination unit of the screen. One illuminating unit shows that thousands of colors are based on the mixed colors of Red Red, Green Green and Blue Blue. So we call each group of red, green and blue lights a pixel.

Point spacing
Pixel pitch refers to the distance between two lamp beads. Generally, P4.81 means that the distance between two illuminating units is 4.81 mm. The slightly larger spacing is suitable for long-distance viewing of outdoor venues, and is smaller for close-up viewing of indoor venues.
Pixel density
Pixel density refers to the number of pixels in a unit area. The greater the number of points per unit area, the higher the resolution and resolution.

Line of sight
The line of sight is divided into the most recent viewing distance and the best viewing distance and visual range. The indoor full-color viewing distance is about P~1.5~2; the outdoor normal full-color viewing distance is equal to P value, in meters.

brightness
Brightness, the intensity of light emitted per unit area of ​​the LED display, in units of CD/square meter, which is simply the intensity of light emitted by a square meter display.

Moiré
Moiré, when shooting a full-color LED display at work, there will be some irregular water ripples on the LED display screen. These water ripples are called “moore patterns” in physics.

Grayscale
Gray scale, the degree to which the brightness of the pixel changes, and the gray level of a primary color generally has 8 to 12 levels. For example, if the gray level of each primary color is 256 levels, for a dual primary color color screen, the display color is 256×256=64K color, which is also referred to as a 256 color display screen.

Synchronous system asynchronous system
Synchronous and asynchronous are relative to the computer. The so-called synchronization system refers to the LED display control system that displays the content displayed on the display and the computer display. The asynchronous system means that the computer-edited display data is stored in advance. In the display control system, the normal display of the LED display will not be affected after the computer is turned off. Such a control system is an asynchronous control system.

Shaped screen
Shaped screen refers to a non-rectangular regular style display that is spliced ​​with unconventional rectangles or regular rectangular modules. It can create a unique shape display suitable for many scenes.

Frame rate
The frame rate refers to the number of image frames displayed per second on the display. The video is actually formed by high-speed switching of one picture. The higher the frame rate, the smoother the picture is. Commonly used frame rates are 24fps, 25fps, 30fps.