Each product will have some small problems, the same LED display is no exception, many people may not know full-color LED display pixel out of control is a more common problem, but the cause of this problem is what? How to solve it? Today, the joint hair to teach you to solve the next.
Pixel out of control: Pixel out of control rate refers to the LED screen of the smallest unit is not working properly when a proportion. Out of control the number of pixels accounted for the proportion of the total number of pixels, we call this phenomenon as the whole screen pixel out of control rate. In order to avoid out of control pixels in a certain area, we proposed the regional pixel out of control rate is between 200 × 200 pixel area, the number of pixels out of control and the total number of pixels is proportional to the region. This out of control pixel is like a discrete distribution of quantification, which is more convenient and intuitive at a glance.
Pixel out of control mode: pixel out of control is generally divided into two points. A blind spot, that is, what we call a blind spot, the popular explanation is that when the need to light it is not bright, so called blind spots. Second, often bright spots, refers to the need to light when it is just on the light, this phenomenon is called a bright spot. Normally out of control will not be the same pixel in the red, green, blue lights at the same time all out of control, but as long as one of the lights out of control (no matter which lights), we usually put this pixel out of control. This time someone will ask full-color LED display pixels if out of control how to do
Because the LED failure in the LED routine test method can not be found. Usually in the high temperature, low temperature, relative to the rapid changes in temperature and other harsh conditions, due to LED chips, brackets, inner lead, solid crystal, PPA cups and other materials under the thermal expansion of the differences caused by the internal stress generated by the different. Electrostatic discharge causes the mechanism of LED failure is more complex, equipment, tools, utensils and the human body are likely to have static electricity and its discharge. But if there is failure of blue and green tube, it is usually the LED junction is electrostatic discharge breakdown. LED display as the process of production is more cumbersome, electrostatic discharge is very difficult to prevent, so in the electrostatic protection process must run through the whole process of production.
Also in different occasions, the actual requirements of the pixel out of control is not the same, full-color LED display indicators require normal control is in one percent, monochrome LED display indicators require control in the very One or less. At present, full-color LED display pixel is no better solution, the joint here in the proposed contact with your service providers, factory maintenance, but if the maintenance costs are too high, you can consider the replacement of those problems with the module unit board To be replaced.