The IC control circuit and the LED point light source share a power supply. Intelligent reverse connection protection, power reverse connection not damage the IC. Built-in signal shaping circuit, any pixel point receives the signal after waveform shaping and then output, to that waveform distortion not accumulate. The control circuit and the RGB chip are integrated in a 3528 packaged component to form a complete external control pixel. Built-in power-on reset and power-down reset circuits.