Light-emitting diodes (full-color LED high-definition electronic display large screen) is a photovoltaic element made of a group of three-five compound semiconductors, the core of which is a PN junction. At the forward voltage, electrons are injected into the P region from the N region, holes are injected from the P region into the N region, and some minority carriers that enter the other region recombine with the majority carriers to emit light. The material properties of the PN junction (band gap) determine the wavelength of the emitted light. For visible light, it determines the color of the light.

Full-color LED high-definition electronic display large screen features are: small size, low power consumption, long life, high brightness and low heat, environmental protection and durability. Working under the proper current and voltage, the full-color LED high-definition electronic display has a long life of up to 100,000 hours.

Full-color LED high-definition electronic display screen classification and application

According to the type of light emitted, full-color LED high-definition electronic display large screen can be divided into visible light full color LED high-definition electronic display large screen and invisible light full-color LED high-definition electronic display large screen two.

Visible full color LED high-definition electronic display large screen including red, orange, yellow, green, blue, violet full color LED high-definition electronic display screen. The red full-color LED high-definition electronic display screen materials mainly include GaP (binary system), AlGaAs (ternary system) and AlGaInP (quaternary system); blue/white full-color LED high-definition electronic display large-screen materials are made of GaN Mainly.

The application of full-color LED high-definition electronic display large screen is very extensive, mainly including:

1, full-color LED high-definition electronic display large-screen display: indoor and outdoor billboards, sports scoreboards, information displays, etc.;

2. Signal indicator: City traffic lights, highways, railways and airport signal lights in major cities in the country, and electronic equipment function instructions;

3, light color lighting: outdoor landscape lighting and interior lighting;

4, special general lighting: portable lighting (flashlights, headlights), low illumination lighting (lamps, house lights, court lights), reading lighting (aircraft, trains, car reading lights), microscope lights, camera flash, lamp Street lights;

5, security lighting: miner's lamp, explosion-proof lights, emergency lights, safety indicator lights;

6, backlight: LCD, LCD TV backlight.

7, automotive lights: including interior lighting and exterior lighting, vehicle interior, including instrument panel, electrical product indicator (switch, audio, etc.), switch backlight, reading lights and external brake lights, tail lights, side lights and head Lights and so on.

8, other applications: consumer use, such as children's flash shoes, Christmas tree full-color LED high-definition electronic display large screen lights.

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Under measurement conditions, continuous measurement, memory and display of the total amount of cold water that can be directly drunk flowing through the closed pipe.

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