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How to crack the "mosaic" of LED display?

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"Mosaic" phenomenon has been a problem that has plagued LED display manufacturers. Judging from the phenomenon, the phenomenon of "mosaic" of the LED display screen is the inconsistency of the brightness sub-region of the display surface, that is, the uniformity is poor. The root cause of the mosaic is caused by the consistency of the tube itself and the consistency defect during use.
What is the LED display mosaic phenomenon?
The LED module is to arrange the LEDs (light emitting diodes) according to a certain rule and then package them. Plus some waterproof products, it is the LED module. The main viewing surface of the quadrangular module may be provided with a decorative structure for blurring the splicing boundaries of the modules. LED module COB light source LED surface light source The utility model allows straight lines to form misaligned short lines from the perspective of vision and optics. Using the linearity of vision, human vision cannot take into account misalignment when scanning from top to bottom (or moving left and right) Two, it is bound to form numerous disparate and discontinuous short line segments, thereby completely eliminating the mosaic phenomenon of the LED display screen caused by the gap between the modules.
LED modules are widely used products in LED products. There are also large differences in structure and electronics. The simple thing is to use an LED circuit board and housing to become an LED module. With some controls, the constant current source and related heat dissipation treatment make the LED life and luminous intensity better.
How to solve the "mosaic" problem?
Use the same batch of red, green, and blue LED lights on each LED display manufacturer, and reclassify the red, green, and blue colors of this batch of LED lights. For the constant current device, the file is divided into 5 files. The constant current source of each grade is evenly distributed to the entire screen for LED unit board production. The standard production fixture is used to ensure that the LED lights are in the same module The same equilibrium position.
Control the mold making process to ensure that all LED lights in the module are not misaligned horizontally, vertically, and backward. After filling, fix the lamp with the standard front cover. Each LED unit board performs single-module brightness adjustment, that is, white balance fine-tuning, to ensure uniform white balance between modules.
Assemble the module into a box. The box body adopts steel plate structure, and strong ribs are added at appropriate positions. Ensure the rigidity and flatness of the box plane. The box punching and bending are formed by numerical control equipment at one time, and the numerical control punch is used to ensure the accuracy of module installation in place. And there is a proper margin to eliminate the cumulative error.
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