What is LED I need everything I need about this thing

At present, LED has been widely used in lighting, display, communication and other fields. In the field of lighting, LED has become a representative of a new generation of lighting technology, which is widely used in indoor lighting, street lighting, landscape lighting, etc. In the field of display, LEDs are used in display screens, mobile phone screens, TV screens, etc.

In the field of communications, LEDs are used in optical communications, lidar, etc.

LED, the full name of "light emitting diode", that is, light-emitting differential diode, is a solid-state device that emits energy through the electronic composite of semiconductor materials and emits light. LED has the advantages of high efficiency and long life, and is widely used in lighting, display, communication and other fields.

At present, LED has been widely used in lighting, display, communication and other fields. In the field of lighting, LED has become a new generation of lighting technology, which is widely used in indoor lighting, street lighting, landscape lighting, etc. In the field of display, LEDs are used in display screens, mobile phone screens, TV screens, etc.

In the field of communications, LEDs are used in optical communications, lidar, etc.

When the applied voltage causes electrons to be injected from the n-type semiconductor region to the p-type semiconductor region, because of the energy level difference, the electrons will recombine with the holes and release energy, thus producing light. The color of LEDs is related to the band structure of semiconductor materials, and different materials can emit different colors of light.

In short, as a high-efficiency and long-life solid-state device, LED has a wide range of application prospects and development space. With the continuous progress of technology and the continuous reduction of costs, it is believed that LED will be more widely used in various fields in the future.

LED, the full name of "light emitting diode", that is, light-emitting diode, is a solid-state device that emits energy through the electronic composite of semiconductor materials and emits light. LED has the advantages of high efficiency and long life, and is widely used in lighting, display, communication and other fields.

The basic structure of LED (lightemittingdiode, light-emitting diode) is an electroluminescent semiconductor material, the core part of which is a wafer composed of p-type semiconductors and n-type semiconductors, and there is a transition layer between p-type semiconductors and n-type semiconductors, called p-n junctions. The volt-ampere characteristics of LEDs are similar to those of ordinary diodes, except that the dead-zone voltage is larger than that of ordinary diodes, which is 2-4V (the junction voltage of different colors of LEDs is different). In addition to having the unidirectional conductivity of a normal diode, it also has the ability to emit light.

When a certain voltage is applied to the LED, an electric current flows through the tube and at the same time releases photons outward. Depending on the semiconductor material used in LEDs, LEDs emit light in different wavelength bands and colors from ultraviolet to infrared. For example:

Gallium phosphide LEDs emit green and yellow light, gallium arsenide LEDs emit red light, etc.

Light-emitting diodes are abbreviated as LEDs. It is made of compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), etc. When electrons recombine with holes, they emit visible light, which can be used to make light-emitting diodes.

Gallium arsenide diodes glow red, gallium phosphide diodes glow green, silicon carbide diodes glow yellow, and gallium nitride diodes glow blue. Due to its chemical properties, it is divided into organic light-emitting diode (OLED) and inorganic light-emitting diode (LED).

LED is the English abbreviation of light-emitting diode, which has the characteristics of power consumption and long life, and its application range includes household lights, hotel business lights, outdoor large screens, TVs, mobile phone background lights, street lights, traffic signal indicators, car tail lights, daytime running lights, etc.

Abbreviation of English words, main meaning: LED = light emitting diode, light-emitting diode, is a solid-state semiconductor device that can convert electrical energy into visible light, which can directly convert electricity into light; LED = large electronic display; LED = Lupus erythematosus disseminatus, disseminated lupus erythematosus, a chronic, idiopathic autoimmune disease; LED is the past tense and past participle of lead, which means "lead, lead"; IATA** at Pulkovo Airport, Russia. This entry focuses on light-emitting diodes.

A light-emitting diode (LED)[1] is a semiconductor component. At the beginning, it was mostly used as an indicator light, display board, etc.; With the advent of white light-emitting diodes, they were also used as illumination.

It is a new light source in the 21st century, which has the advantages of high efficiency, long life, and not easy to break, which cannot be compared with traditional light sources. When a forward voltage is applied, the light-emitting diode emits a monochromatic, discontinuous light, which is a type of electroluminescence effect. Changing the chemical composition of the semiconductor material used causes the light-emitting diode to emit light in near-ultraviolet, visible, or infrared light.

In 1955, Rubin Braunstein of the Radio Corporation of America first discovered the infrared radiation of gallium arsenide (Gaas) and other semiconductor alloys. In 1962, General Electric's Nick Holonyak Jr) developed the first practical application of visible light-emitting diodes for the benefit of the population.

Dizzy, I thought it was a computer monitor, it looks like it's seriously outdated.

LED Overview.

LED (Light Emitting Diode) is a solid-state semiconductor device that can directly convert electricity into light. The heart of an LED is a semiconductor wafer with one end attached to a bracket, one end is the negative electrode, and the other end is connected to the positive electrode of the power supply, so that the entire wafer is encapsulated by epoxy resin. A semiconductor wafer is made up of three parts, one is a p-type semiconductor, in which holes dominate, and the other end is an n-type semiconductor, which is dominated by electrons here, and in the middle is usually a quantum well with 1 to 5 cycles.

When an electric current is applied to the wafer through the wire, the electrons and holes will be pushed towards the quantum well, where the electrons will recombine with the holes, and then emit energy in the form of photons, which is the principle of LED luminescence. The wavelength of light, which is the color of light, is determined by the material that forms the p-n junction.

LED (Light Emitting Diode), the English name of light-emitting diode, referred to as LED, is a solid-state semiconductor device that can convert electrical energy into visible light, which can directly convert electricity into light. The heart of an LED is a semiconductor wafer with one end attached to a bracket, one end is the negative electrode, and the other end is connected to the positive electrode of the power supply, so that the entire wafer is encapsulated by epoxy resin. A semiconductor wafer is made up of two parts, one is a p-type semiconductor, in which holes dominate, and the other end is an n-type semiconductor, which is mainly electrons here.

But when these two semiconductors are connected, a "p-n junction" is formed between them. When an electric current is applied to the wafer through the wire, the electrons will be pushed to the p-region, where the electrons will recombine with the holes, and then the energy will be emitted in the form of photons, which is the principle of LED luminescence. The wavelength of light, which is the color of light, is determined by the material that forms the p-n junction.

It is a display screen that controls the display of semiconductor light-emitting diodes and is used to display various information such as text, graphics, images, animations, video signals, etc. Due to its advantages of easy control, low-voltage DC drive, rich color performance after combination, and long service life, it is widely used in large-screen display systems in various urban projects. LED can be used as a display screen, under the control of a computer, to display a wide range of colors **and**.

LEDs are a type of semiconductor that converts electrical energy into visible light.