LED is the abbreviation of Light Emitting Diode (LED). Since its development, this semiconductor component has generally been used as an indicator light and display panel. With the advancement of technology, it has evolved to be used as a common light source. Electric energy is converted into light energy and has a service life of tens of thousands of hours up to 100,000 hours. At the same time, it has the advantages of being less fragile, energy-saving, environmentally friendly, mercury-free, small in size, can be used in low temperature environments, light source with directionality, reduce of light pollution and a richer color gamut.
LED is an electronic component that can convert electrical energy into light energy, and has the characteristics of a diode at the same time, which means that it has a positive electrode and a negative electrode. The most special feature of LED is that it only emits light when it is powered on from the positive pole. Generally, when DC power is applied, the LED will light up steadily, but if AC power is connected, the LED will flash. The flashing frequency depends on the frequency of the input AC power. The light-emitting principle of LED is to apply a voltage, so that electrons and holes are combined in the semiconductor, and the energy is released in the form of light.
With the emergence of white LEDs and the introduction of more technologies, the application of LEDs is becoming more and more common in lighting equipment such as indicator lights of household appliances and notebook computers, automotive anti-fog lights, and indoor lighting.