How to solve the full color LED display pixel is out of control - Full color LED screen - knowledge

by:Xinyao LCD     2020-04-22
Full color LED display screen is clear, uniform color, high brightness, using high brightness LED, is still clearly visible over a long distance. Full color LED display pixel is out of control is a common problem, what is the cause of this kind of imagination, how to solve? Below small make up for all service: in general, common, full-color LED display pixels have 2 r1g1b ( Two red, one green and one blue light, below the same) And 1 r1g1b, and out of control does not generally the same pixel in the red, green, and blue lights all out of control at the same time, but as long as one lamp is out of control, we think this pixel is out of control. Therefore, can be concluded that the main cause of runaway full-color LED display pixels is LED lamp is out of control. Failure is a major cause of LED lights can be divided into two aspects: one is the LED itself poor quality; Secondly, the method of use undeserved. LED failure in LED routine inspection tests cannot be found. At high temperature, low temperature, temperature under bad conditions, such as rapid changes, due to the LED chip, epoxy resin, stents, fuses, solid crystal glue, PPA in the cup body material such as the difference of thermal expansion coefficient, cause the internal stress of different. Failure mechanism of electrostatic discharge to the LED, is very complex, equipment, tools, utensils, and the human body are possible with static and the discharge, the static electricity is less several hundred volts, high tens of thousands of volts, discharge time in nanoseconds. If there is a blue green tube failure, is usually LED to PN junction is electrostatic discharge breakdown may go. Full color LED display due to the complex production process, electrostatic discharge small-scale operations, therefore, electrostatic protection must be through the production process. Other occasions, the actual needs of pixels is out of control rate is different, full-color LED display indicators requirements controlled within one percent. Single color LED display index requirements control within one over ten. There is no good solution full-color LED display pixels, suggest to contact your service provider, returned to the factory maintenance, if the maintenance cost is too high, can consider to change a problem of the module unit board.
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