How to select a good LED display

1. Flatness the surface flatness of LED display screen shall be within 0a1mm to ensure that the displayed image is not distorted. Local bulges or recesses will lead to dead corners in the visual angle of the display screen. Flatness is mainly determined by three aspects: ① production technology and materials
1. Flatness
The surface flatness of LED display screen shall be within 1mm to ensure that the displayed image is not distorted. Local bulges or recesses will lead to dead corners in the visual angle of the display screen. Flatness is mainly determined by three aspects: ① production technology and materials; ② Construction of steel works on site; ③ The display installation team decides the installation construction quality.
2. Brightness and visual angle
The size of the visual angle directly determines the visual area and space of the LED display, so the larger the better. The size of the viewing angle is mainly determined by the LED chip.
3. White balance effect
White balance effect is one of the most important indicators of LED large screen. In terms of chromatics, pure white will be displayed only when the ratio of red, green and blue primary colors is 1:4.6:0.16. If there is a deviation in the actual ratio, there will be a deviation in the white balance. Generally, pay attention to whether white is blue or yellow green. The white balance is mainly determined by the LED chip, which also has an impact on the color restoration.
4. Color reducibility
Color reducibility refers to the color reducibility of LED display screen, that is, the color displayed by LED display screen should be highly consistent with the color of playback source, so as to ensure the authenticity of image.
5. Whether there are mosaics and dead spots
Mosaic refers to the small four squares that are always bright or black on the LED display screen, which is the necrosis of the module.
6. Whether there are color patches
Color block refers to the lack of color in a small area; The main reason is to control the power supply of IC and power supply and the wiring quality of control circuit
7. Display appearance
Appearance of display screen: it is the most intuitive and original to make the most preliminary evaluation on the quality of products. The appearance quality can reflect the production process and material quality of full-color LED display manufacturers.