Interpretation of LED industry status and technology development

In today's ever-changing era of electrical appliances, LED as a source of light has penetrated into every aspect of our lives. In fact, LED was only born in the 1960s, and it was shorter than the time when our new China was founded. As an epoch-making technology, this is really not a long time, but with the rapid development of the electronics industry, LED has not only made great progress in the field of indication and decoration, but also opened a new page in the field of lighting. Controversially becoming one of the mainstream lighting products of the next generation.

Early LEDs were limited by the singularity and technology of the PN junction doping materials. We can only get light of lesser colors such as yellow and red. At this time, the LED has only the indication function due to low light efficiency, low power, etc., and some people have made bold attempts in the decoration field and achieved good results. Later, due to the emergence of a batch of new materials such as gallium arsenide (GaAs), gallium phosphide (GaP), and gallium arsenide (GaAsP), the color of the LED light source not only became brighter, but other indicators also improved. In particular, the birth of white LEDs has laid the foundation for its future lighting field.

Decomposition of LED status

In fact, current LEDs still face some problems in the field of lighting. The reason why it can attract people's high attention is mainly because it is characterized by energy saving, environmental protection, longevity, safe and low voltage ignition and versatility. It is unmatched by traditional lamps, but the LED lighting products currently on the market. These characteristics are not fully demonstrated due to factors such as the materials used, the manufacturing industry, and the cost. These products are side by side. According to the use environment to distinguish between outdoor and indoor lighting, for example, outdoor lighting mainly includes: street lights, landscape lights, architectural spotlights, car lights, wall washers, floodlights, etc.; indoor lamps mainly have PAR lights Series, GU (5.3, 10) (MR16) series, fluorescent lamp series (mainly T8), candle light series, downlight series, recessed light series, wall lamp, ceiling light, curtain wall, etc., track lights, etc. According to the direction of light, it can be divided into directional lights and non-directional lights. However, unfortunately, regardless of the shape or use of these lamps, we can find the shadow of traditional lamps. In other words, in the current field of lighting, LEDs have not yet positioned themselves, not completely their own. This has seriously affected the development of LED in the field of lighting.

In terms of technology, LED also faces some difficulties. For example, heat dissipation, according to related research and years of work, at present, a good light source design can achieve electro-optical conversion efficiency of about 30%. But still 70% of the electricity is converted into heat. Take a 5W led bulb as an example. Assuming that the driving efficiency is 80%, then the light source will get 4W of power. According to the 30% electro-optical conversion efficiency, there is still 2.8W of electrical energy converted into heat, plus the front. A loss of about 1W on the driver board, a 5W bulb will produce 3.8W of thermal energy. This is the main reason why the temperature of our LED lamps is high.

Edit: Nizi

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