The light emitting diode is referred to as LED.It is made of compounds such as) (GA), arsenic (AS), phosphorus (P), nitrogen (n), etc.When the electron and the cavity are compounded, it can radiate visible light, so it can be used to make a light -emitting diode.As a indicator light in circuits and instruments, or form or digital display.Arsenic diodes are red light, phosphorized diodes are green, and silicon carbide diode hair yellow light, nitride diode diode hair blue light.Due to the chemical properties and organic light -emitting diode OLED and inorganic luminous diode LED.
The two LCD and LED are different backlight sources. The backlight source of LCD is like a light bulb. The brightness is uneven, the middle is brightest, and the four corners are dark. Moreover, the TV is thicker and the calories are relatively large.The backlight of the LED is LED board. Some are distributed around the LCD screen.Essence
(1) The application of the display of the light source display LED of the display screen and the communication signal display.(2) Application of automotive lamps in the automotive industry includes internal dashboards, audio indicators, backlights of switches, reading lights and external brake lights, taillights, side lights and headlights.(3) LED backlight sources are most noticeable with high -efficiency side -light backlight. They have been widely used in electronic watches, mobile phones, BP machines, electronic calculators and swiping machines. With the increasingly small electronic products.(4) LED lighting light source Early product has low light emotional efficiency, and the light strength generally can only reach several to dozens of MCDs. It is suitable for indoor occasions, applications such as home appliances, instrumentation, communication equipment, microcomputers and toys.(5) Other applications, such as a flashing shoe that is welcomed by children, the built -in LED built -in when walking will flash.
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led meaning in Chinese
LED (LightemittingDiode), 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.

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