source:Industry Trends release time:2023-02-06 Hits: Popular:led screen wholesaler
1. Flatness
The surface flatness of the LED display should be within ± 1mm to ensure that the display image is not distorted. Local protrusions or concave feed will cause the dead angle of the display screen. Between the box and the box, the gap between the module and the module should be within 1mm. Excessive gaps will lead to obvious display screen boundaries and uncoordinated vision. The quality of the flatness is mainly determined by the production process.
2. Brightness and visual angle
The brightness of the indoor full color screen is above 800cd/m2, and the brightness of the outdoor full color screen should be above 5000cd/m2 to ensure the normal work of the display, otherwise the image displayed by the brightness is too low. The brightness of the display is not as bright as possible, and it should match the brightness of the LED packaging. Blind the increase of the current will cause LEDs to reduce too fast, and the display life will drop rapidly. It can be required to provide a parameter report to confirm. The size of the screen body is mainly determined by the quality of the LED tube core.
3. White balance effect
The white balance effect is one of the most important indicators of the display. The proportion of the three primary colors of red and green and blue in color is 1: 4.6: 0.16. Pure white will be displayed. If there is a bit of deviation in the actual proportion, the bonding of white balance will appear. Green phenomenon. At the time of monochrome, the smaller the brightness and wavelength difference between the LEDs, the better. Standing on the side of the screen to watch the colorless or split, the consistency is better. The quality of the white balance is mainly determined by the LED tube core brightness wavelength ratio and the control system of the display screen, and the restoration of the tube core also affects the color.
4. Color reduction
The reducing nature of color refers to the reduction of the display on the color. The color of the display display should be highly consistent with the color of the player, so as to ensure the real sense of the image.
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