LED lamp bead and LED carrier plate thereof

The LED lamp bead is divided into a lamp bead A or a lamp bead B. The lamp bead A or the lamp bead B is provided with a chip IC, a power supply negative pin GND, a power supply positive pin VDD, an input pin DIN, an output pin DOUT, a backup input pin FDIN and a backup output pin NC, the power supply negative pin GND and the power supply positive pin VDD are arranged on the periphery, the input pin DIN and the backup input pin FDIN are arranged on the same side, and the chip IC is connected with the chip IC. And the input pin DIN and the output pin DOUT are positioned on opposite sides. The LED lamp has the advantages that the LED lamp can be shared by the lamp beads A and the lamp beads B, the requirement for installation of the lamp beads A and the lamp beads B can be met only through the PCB of the same structure, the installation efficiency can be improved, the plate manufacturing cost is saved, and waste is reduced. 一种LED灯珠及其LED载板，其中灯珠分为A灯珠或B灯珠，该A灯珠或B灯珠具有芯片IC、位于四周的电源负脚GND、电源正脚VDD、输入脚DIN、输出脚DOUT、备份输入脚FDIN