Six factors affecting the quality of LED display

3, brightness and viewing angle

The brightness of the indoor full color screen should be above 800cd/m2, and the brightness of the outdoor LED 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.

The size of the viewing angle directly determines the number of display audiences, so the bigger the better. The size of the viewing angle is primarily determined by the way the die is packaged.

4, flatness

The surface flatness of the LED display should be within ±1mm to ensure that the displayed image is not distorted. Local protrusions or recesses may cause a blind angle in the viewing angle of the display. The quality of the flatness is mainly determined by the production process.

5, whether there is mosaic, dead point phenomenon

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.

6, with or without color blocks

The color block refers to the obvious color difference between adjacent modules, and the color transition is in units of modules. The phenomenon of color block is mainly caused by poor control system, low gray level and low scanning frequency. .