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What is the technology of LED?

Nowadays, the three letters of LED often appear in people's lives. When you visit the TV store, the shopping guide will tell you that the TV you are paying attention to is the LED TV. When you decorate, the construction staff will ask you if you Willing to install LED bulbs, when you are on the street, watching a few hundred inches of large screen sigh shows that technology is developed, in fact, this large screen is also a product of LED technology, then what exactly is LED? Why lighting, display and In the field of backlighting, is there such a technology?

LED is a light-emitting diode (English: Light-Emitting Diode, LED for short), which is a kind of light-emitting device based on semiconductor technology. Unlike traditional light bulbs, which use filament light, LED light-emitting diodes directly convert light into light. The energy technology, when it is in the forward working state (that is, the forward voltage is applied to both ends), when the current flows from the anode of the LED to the cathode, the semiconductor crystal emits light of different colors from ultraviolet to infrared, and the intensity and current of the light related.

Therefore, LED is essentially a kind of lighting technology. It is used in backlight and display fields, mainly because LED light source can emit light of different colors, especially for red, green and blue light. Friends who are familiar with optical theory. All know that these three colors are the three primary colors, which can emit such light, which means that it can be used to display the picture. In theory, as long as the LED light-emitting device is small enough,

Small size, can emit different light is the two most obvious advantages of LED technology, in addition, LED has many advantages that can not be ignored, accelerate the development of this technology, then we will look at the advantages of LED.

LED light sources come in many sizes

What are the advantages of LED?

As we mentioned above, LED technology does not have a filament. Although the semiconductor material itself is a consumable, its stability and durability are unmatched by the filament. The filament is very slender and not only difficult to be continuous for a long time. It can not withstand unstable environments, and the life of LED light source is very long, generally can reach more than 20,000 hours, even in the wind and sun, the same longevity.

Low operating voltage and low operating current are also a major advantage of LED technology. Traditional light sources require large voltages and large currents, which not only wastes more resources, but also limits the application scenarios of traditional light sources. In the equipment, the high voltage environment required by the traditional light source cannot be given. Therefore, the LED occupies the portable light source market, and it only needs a voltage of several tens of volts, and the current passing rate is naturally low, so it is not only very environmentally friendly, but also allows the portable light source market. With a new solution, this is why mobile backlighting is the fundamental reason for LEDs.

In addition, the response speed is fast, and it is also a big advantage of the LED light source. The general user may not understand, and the response speed of the light source is very useful. In fact, this advantage is mainly used in the backlight technology. Since the liquid crystal itself cannot emit light, the LED responds as a backlight. The speed is fast, it can be matched with the rapid change of the picture, and can be quickly closed and opened and closed, increasing the contrast of the picture, especially using precise control technology, and the overall energy consumption of the device can be reduced a lot.

These advantages of LED are very obvious, and their application in different fields is also bringing these advantages into the corresponding market. Next, we will look at the application of LED technology in different markets.

LED lighting applications

The first is the field of lighting. The biggest advantage of LED in this field is the long service life, which makes the maintenance cost of LED light source low in the later stage, and its brightness is also good, which can meet the general lighting demand. It is also very energy efficient, so in many renovation projects, LED light source is a good choice.

First of all, LED can be used for atmosphere lighting, atmosphere lighting is different from demand lighting. With energy-saving features, it can be opened for a long time. Its multi-color advantage can be used to render different occasions, such as the rest area can use warm colors. The lights, while the need for cool-toned lighting, the LEDs are also perfectly adapted.

Secondly, the LED can be used for outdoor lighting. Since the outdoor environment is uncontrollable, the traditional light source needs more protection measures, and the LED light source does not require too much protection measures, and its own energy-saving effect can also be opened for a long time. With long life, LED is very suitable for outdoor lighting. Many neon lights are made with LED light source.

Finally, work lighting, a lot of special working environment, the light source must be stable and stable, and there can be no errors. This is the stability of the LED light source once again, it can be turned on for a long time, the light source will not appear rapid decay phenomenon. There will be no momentary extinction, so for the special working environment, LED light source is also very necessary.