What is an LED display?advertising led display screen Factory

　　LED display LED (Light Emitting Diode), luminous diode, is a solid semiconductor device, which can directly convert electricity into light. The heart of LED is a semiconductor chip. One end of the chip is attached to a bracket, one end is the negative electrode, and the other end connects the positive pole of the power supply, so that the entire chip is encapsulated by epoxy resin. Semiconductor chips are composed of three parts, one is a P -type semiconductor. In it, the acupuncture points are dominated. The other end is N -type semiconductor. The main is electrons here. The middle is usually a quantum trap from 1 to 5 cycles. When the current passs through the wire to act on this chip, the electrons and acupoints will be pushed to the quantum trap. The electrons and the acupoints are compounded in the quantum trap, and then the energy will be emitted in the form of photon. This is the principle of LED glowing. The wavelength of light is the color of light, which is determined by the material that forms the P-N knot. The LED display can achieve changes in hundreds of or even thousands of colors.

　　The power consumption of the LED display and the LCD display is about 1: 10, and the LED display is more energy -saving; it has a higher refresh rate and has a better performance in video; , Can display a variety of text, numbers, color images and animation information, you can play color video signals such as TV, video, VCD, DVD. The single elemental response speed of the LED display is 1000 times that of the LCD LCD screen. Under strong light, you can also take care of it and adapt to a low temperature of minus 40 degrees.

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