SMD LED lamp beads concentrating ball head 

SMD LED lamp beads 2835 concentrating ball head LED display screens will appear brightness decline and display color inconsistency after a long period of work, mainly due to the brightness attenuation of LED devices LED light board patch. The attenuation of LED brightness will reduce the brightness of the entire screen. The inconsistency of the brightness attenuation of the red, green, and blue LEDs will cause the color of the LED display to be inconsistent, which is the phenomenon that we often say that the display is spent LED strip patch. High-quality LED devices can well control the brightness attenuation range. According to the standard of 20mA lighting at room temperature for 1000 hours, the red attenuation should be less than 2%, and the blue and green attenuation should be less than 10%. Therefore, the blue and green LED should not use 20mA current when designing the display. It is best to use only 70% to 80 % Of rated current LED chip processing. 　　The attenuation cha…