Why Is the Light Emitting Diode Darker and Darker

Everyone has such a life experience. The LED lamp just bought is always particularly bright, but after a period of time, many lamps will become darker and darker. Why does LED lamps have such a process? To understand why your LED lamp will become darker and darker, we must first understand a professional term——LED lamp beads are declining. After the diode of the tube, the light decay refers to that after a period of lighting, the light strength ratio will be reduced and cannot be recovered, that is, the reduction part is called the light decay of LED lamp beads. The darker the LED light is used because the LED lamp beads will have light decay. The light decay of LED lamp products is the weakening of the signal of light in the transmission, and at this stage, the global light -emitting diode large manufacturers make different degrees of light decay, and the high -power light emitting diode also has light decay. The relationship is mainly determined by chip, fluorescent powder and packaging technology. At present, the light decay of white light beads on the market is one of the primary issues to march towards civilian lighting. Light decay generally refers to its light flux. When charging the surface of the light drum, as the charge is accumulated on the surface of the light sensitive drum, the potential continues to rise.“saturation”The potential is the highest potential. The surface potential will decrease over time. Generally, the potential at the time of work is lower than that of this potential. This potential is naturally reduced over time.“Dark decay”process. During the exposure of the light drum scanning, the potential of the dark region (referring to the surface of the optical conductor that did not be illuminated by the light) is still in the dark decay process; The conductivity rate rose rapidly, forming optical guide voltage, the charge disappeared rapidly, and the surface potential of the optical conductor also dropped rapidly. Call“Light failure”Essence This is here today.