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LED Knowledge Overview

Shenzhen Lights Technology Co.,Ltd | Updated: Apr 01, 2015

LED (Light Emitting Diode), light emitting diode, is a solid-state semiconductor device, which can directly convert electricity to light. Heart of the LED is a semiconductor chip, the chip on a bracket attached to one end of one end is negative and the other end to connect the power of positive, making the entire wafer is epoxy encapsulated. Semiconductor chip is composed of two parts, the part of the p-type semiconductor, prevail in it inside the hole, and the other end is an n-type semiconductor, here is primarily electronic. But when I connect the two semiconductor, a p-n junction is formed between them. When electricity flows through a wire in the chip when the electron is pulled into a p-region, in p-electrons with holes in the compound and will be issued in the form of photon energy, which is the principle of LED light. And the wavelength of the light is the colour of the light, is determined by the material forming a p-n junction.

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