Introduction of seven parameters of LED display

Seven parameters of LED display:

1. Flatness

The flatness of the surface of the LED display should be within 0≤a≤1mm to ensure that the displayed image is not distorted. Local protrusions or recesses will cause a blind spot in the viewing angle of the display. The quality of the flatness is mainly determined by ① production technology and materials; ② on-site steel engineering construction; ③ installation and construction quality of the display installation team.

2. Brightness and viewing angle

The brightness of the indoor full-color LED display must be above 800cd/m², and the brightness of the outdoor full-color LED display must be above 1500 cd/m² to ensure the normal display of the LED display, otherwise the brightness will be too low. Cannot see the displayed image clearly. The level of brightness is mainly determined by the quality of the LED die.

The size of the viewing angle directly determines the size of the viewing area of u200bu200bthe LED display, so the larger the better. The size of the viewing angle is mainly determined by the LED chip.

3. White balance effect

The white balance effect is one of the important indicators of the LED display. In color science, pure white will be displayed when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16. If the actual ratio is a little different, the white balance will be deviated. Generally, pay attention to whether the white is blue or yellow. Green phenomenon. The quality of the white balance is mainly determined by the LED chip, and the LED chip also has an impact on the color reproduction.

4. Color reduction

The color reproducibility refers to the reducibility of the color of the LED display screen, that is, the color displayed on the LED display screen must be highly consistent with the color of the playback source, so as to ensure the realism of the image.

5. Is there any mosaic or dead spots?

Mosaic refers to the small four squares that are always bright or black that appear on the LED display. It is the phenomenon of module necrosis. The main reasons are: ①The quality of the connectors used in the LED display is not good enough to be convex or concave Phenomenon; ②The LED LED Light module is not adjusted correctly; ③The sealing glue process is unqualified. Dead point refers to a single point that is often black on the LED display. The number of dead points is mainly determined by the quality of the LED chip.

6. Is there any color block?

The color block refers to the lack of color in a small area; the main reason is the control IC and power supply, and the quality of the control circuit wiring.

7. Display appearance

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