Process led display "Mosaic" method

Time:2018-11-30 Views:127

What is led screen Mosaic phenomenon that we should understand first?

As the led module is widely used in led products, it also has great differences in structure and electronics. The simple one is to use a circuit board and shell equipped with led to become an led module. The complex one is to add some control.

Led module COB led light source, surface light source, the utility model from the perspective of visual and optical, make form the dislocation short straight line, the use of visual linearity, the human eye vision from the top down (or direction) scan can‘t both dislocation, dislocation is bound to form numerous discontinuous short period, and thus formed by module the gaps between the led display Mosaic phenomenon.

The "Mosaic" phenomenon has long puzzled led display manufacturers.From the surface, led display screen "Mosaic" phenomenon is shown as the display surface brightness is not consistent in the region, that is, poor uniformity.The fundamental reason that causes Mosaic generation is the consistency of lamp tube itself and the consistency flaw when using are caused.

So how do we solve the problem of "Mosaic" phenomenon? Delenser explains the following three points:

1. Use the same batch of red, green and blue led lights in each led display manufacturer, and refile the red, green and blue led lights in this batch.The constant current source of each grade is evenly distributed to the whole screen for led panel production. Standard production fixtures are used to ensure that led lamps are in the same balanced position in the same module.

2. Assemble modules into boxes.The box body is made of steel plate and reinforced at the appropriate position.Ensure the rigidity and flatness of the box surface.The punching and bending of the box body are formed by numerical control equipment once, and the precision of the module installation is guaranteed by numerical control punch.And has the appropriate margin to eliminate the accumulated error.

3. Control the process of mold making to ensure that all led lights in the module are horizontal, up and down, and front and rear without abnormal deviation.After pouring glue, fix the lamp with the standard front cover.Each led panel carries out brightness adjustment of a single module, namely fine adjustment of white balance, so as to ensure even white balance among modules.