source:other news release time:2023-06-07 Hits: Popular:led screen wholesaler
1. Flatness
The surface flatness of LED display screens should be within 0 ≤ a ≤ 1mm to ensure that the displayed image does not distort. Local protrusions or indentations may cause blind spots in the visual angle of the display screen. The quality of flatness is mainly determined by three aspects: ① production process and materials; ② On site steel engineering construction; ③ The installation and construction quality of the display screen installation team is determined.
2. Brightness and visual angle
The brightness of the indoor full color LED display screen should be above 800cd/m2, and the brightness of the outdoor full color LED display screen should be above 1500 cd/m2 to ensure the normal display of the LED display screen. Otherwise, the displayed image may not be clear due to low brightness. The brightness is mainly determined by the quality of the LED tube.
The size of the viewing angle directly determines the amount of visible area space of the LED display screen, so the larger the better. The size of the visual angle is mainly determined by the LED chip.
3. White balance effect
The white balance effect is one of the most important indicators of LED display screens. In chromatics, when the ratio of red, green and blue primary colors is 1:4.6:0.16, pure white will be displayed. If there is a little deviation in the actual ratio, white balance deviation will occur. Generally, attention should be paid to whether the white is blue or chartreuse. The quality of white balance is mainly determined by LED chips, which also have an impact on the color restoration.
4. Color restoration
The color restoration refers to the color restoration of LED display screens, which means that the colors displayed on LED display screens must be highly consistent with the colors of the playback source, in order to ensure the authenticity of the image.
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