LED pixel dot? What are led pixel dots?

- Mar 23, 2019-

LED pixel dot? What are led pixel dots?


LED pixel dot? What are led pixel dots? Light Emitting Diode, a solid-state semiconductor device that converts electricity directly into light. The heart of the LED is a semiconductor wafer with one end attached to a holder, one end being the negative pole and the other end connected to the positive pole of the power supply, so that the entire wafer is encapsulated by epoxy. 

LED Pixel Light

The semiconductor wafer consists of two parts, one part is a P-type semiconductor, in which the hole dominates, and the other end is an N-type semiconductor, which is mainly electrons here. But when the two semiconductors are connected, they form a "P-N junction." 

JD22 facade lighting (6)

When a current is applied to the wafer through the wire, the electrons are pushed toward the P region. In the P region, the electrons recombine with the holes, and then the energy is emitted in the form of photons. This is the LED.


The principle of luminescence. The wavelength of the light determines the color of the light, which is determined by the formation of the P-N junction material.