First, the flatness
The surface flatness of the LED display screen should be within ±1mm to ensure that the displayed image is not distorted, and partial protrusion or recession may cause a dead angle of the viewing angle of the display screen. The quality of the flatness is mainly determined by the production process.
Second, brightness and viewing angle
The brightness of the indoor full color screen should be above 800cd/m2, and the brightness of the outdoor full color screen should be above 1500cd/m2 to ensure the normal operation of the display. Otherwise, the displayed image will not be seen because the brightness is too low. The brightness is mainly determined by the quality of the LED die.
Third, the white balance effect
The white balance effect is one of the most important indicators of the display. In color theory, when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, pure white will be displayed. If there is a slight deviation in the actual ratio, the deviation of white balance will occur. Generally, it should be noted whether white is blue or yellow. Green phenomenon. The quality of the white balance is mainly determined by the control system of the display screen, and the die also has an effect on the color reproduction.
Fourth, the color reduction
The reductiveness of color refers to the reproducibility of the color of the display screen. The color displayed on the display screen should be highly consistent with the color of the source, so as to ensure the realism of the image.
Fifth. Is there a mosaic or dead point?
Mosaic refers to the small four-square block that appears on the display or is always black. The main reason is that the module is necrotic. The main reason is that the quality of the plug-in program used in the display is not good.
The dead point refers to a single point that is always bright or often black on the LED display. The number of dead points is mainly determined by the quality of the die.
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- LED Display
- LED Display Development History
- LED Display Structure Classification
- LED Display Size
- LED Technical Advantages
- TFT Display
- LED And LED Backlight
- LED Display Application
- LED Screen