Mosaic "phenomenon has been plagued by the LED display manufacturers of the problem.From the point of view, LED display" mosaic "phenomenon for the display surface brightness of the sub-regional inconsistency, that is, uniformity caused by mosaic produced the root cause is The consistency of the lamp itself and the consistency of the use of defects caused.
What is the LED display mosaic phenomenon?
LED module is the LED (light-emitting diodes) arranged in accordance with certain rules and then packaged together, plus some waterproof processing products, is the LED module. The main surface of the quadrilateral module may be provided with a decorative structure for blurring the module splice limits. LED module COB light source LED surface light source The utility model from the perspective of vision and optics, so that the formation of a straight line short line, the use of visual linearity, human vision from the top down (or left and right direction) scan can not take into account the dislocation Two, is bound to form numerous dislocation discontinuous short-term segment, thus completely eliminating the gap between the module and the formation of the LED display mosaic phenomenon.
LED module is the application of LED products in a wide range of products, in terms of structure and electronics are also very different, with a simple circuit board with LED and shell has become an LED module, the complex to add On some control, constant current source and related heat treatment to LED life and luminous intensity better.
How to solve the "mosaic" problem?
In each piece of LED display manufacturers use the same batch of red, green, blue LED lights, and this batch of LED lights red, green, blue re-file. For the constant current device for inter-chip sub-file, divided into five files, and each grade of constant current source evenly distributed to the entire screen for LED unit board production, with the standard production fixture to ensure that LED lights in the same module are in The same equilibrium position.
Control mold making process to ensure that all modules within the LED lights in the level, up and down, before and after no abnormal deviation. After the filling, the lamp will be fixed with the standard front cover. Each LED unit board for single-module brightness adjustment, that is, white balance fine-tuning, to ensure that the balance between the white balance.
Assemble the module into a box. The box is made of steel plate and has a strong gluten in the proper position. To ensure that the box plane of the steel and flatness. Box stamping, bending using a CNC device forming, the use of CNC punch to ensure that the module installed in place accuracy. And have the appropriate margin to eliminate the cumulative error.