2 thoughts on “The current situation and development trend of the LED industry?”
Ricky
Smart Research Data Research Center News:
This Summary: LED exists with electrostatic release damage and thermal expansion coefficient equivalent bottlenecks and heat dissipation problems, so that its power cannot be made greatly and low brightness. The current commonly used high -power LED chips are 1W and 3W. It can increase the LED power by integrated chip, but now the technology is still immature, mainly to solve the problem of heat dissipation. You can also achieve high -power LED lamps through the strings, parallel or mixed connections of many beaded LEDs. The latter two are low -efficiency and less used. Multi -pearl LED series is the mainstream of LED lamps in the field of lighting.
The application of LED lights Due to the unparalleled advantages of LED lights with other lamps, LED lights are developing at a very fast speed and gradually replacing other lamps. Now LED lights have been widely used in various lighting fields. middle. Because the LED is small and flexible, it can be arranged into various shapes and can be controlled by computer programs. Therefore, text, images, animations, film and television and other static and dynamic patterns can be displayed. At the opening ceremony of the 2008 Beijing Olympics, LED lights showed its endless charm and advantages. LEDs are used in a large number of public monitors, such as various signal lights, landscape lighting, beautification of the street street, beautification of public entertainment venues, stage effect lighting, and building lighting. In the LCD display, LED is used as a backlight of the screen of screens such as computers, televisions and mobile phones.
On the road of transportation, LEDs are already used for controllable energy -saving street lighting, tunnel lights lighting, overpass lighting, traffic signal lights, etc. In terms of car lamps, many cars are now braking lights, location lights, steering signal lights, rear fog lights, reversing lights and other lamps. LED light sources have begun to use. With the continuous improvement of LED technology, technical problems are continuously resolved, and the continuous emergence of high -power LED lamps, the application of LEDs in the fields of indoor lighting, automotive lamps, studio, and watch lamps will be more popular.
The LED has many advantages, but there are many shortcomings and technical problems to be further improved and resolved. The following discussions are discussed from several aspects.
1 1. Large power LED technology. LED has the problem of electrostatic release damage and thermal expansion coefficients and other effectiveness bottlenecks and heat dissipation problems, so that its power can not be made greatly and low brightness. The current commonly used high -power LED chips are 1W and 3W. It can increase the LED power by integrated chip, but now the technology is still immature, mainly to solve the problem of heat dissipation. You can also achieve high -power LED lamps through the strings, parallel or mixed connections of many beaded LEDs. The latter two are low -efficiency and less used. Multi -pearl LED series is the mainstream of LED lamps in the field of lighting. However, there is a fatal weakness in series in series. This is a big bottleneck that restricts the application of high -power LED lamps in the field of lighting. Increasing the power of LED lamps, one is to increase power from the chip aspect, and the other is to optimize the circuit design to increase power.
2. Heat dissipation technology. Temperature is an important factor that affects LEDs. The increase in temperature will accelerate the attenuation of the LED, and the temperature at the chip node directly affects the life of LED. Therefore, the strength of LED heat dissipation capabilities limits the power size of the LED.
The heat inside the LED is mainly produced by the LED chip and printing circuit board. For small -power LEDs, the calories can be distributed through the method of natural conduction. Heat dissipates in many ways. In terms of heat dissipation design, it is usually considered from the aspects of LED packaging heat dissipation, circuit board heat dissipation and increased heat dissipation components.
3. Chip technology and chip packaging technology. The key to the development of chip technology is the choice of substrate materials and the growth technology of extension. The key to technology improvement is based on reducing defect density and how to develop more efficient and stable devices, and how to improve the lighting efficiency of LED chips is the most important measure of the current overall technical indicators. Traditional substrate materials include sapphire, SI, SIC, and currently popular materials are ZNO, GAN, and so on. The mainstream method of manufacturing extension is to deposit metal organic material chemical gas. According to LED Global Online in 2011, the University of North Carolina University proposed a new nitride growth process. This new process is expected to reduce the defects of the materials by one thousandths, thereby creating a higher brightness LED glowing two. Grade management.
4. Optical design technology. LED is a light source and has good direction. It can achieve the ideal optical curve through LED dot matrix design, lens and reflective devices, and secondary optical design, and even three optical design. This is also the difficulty of optical design. In the overall lighting, the lamp needs to have a large irradiation surface. You can use linear LED light strips to match with technologies such as light guide boards to make it a light source. LED car signal lights can be composed of reflex mirrors and light mirrors. Through reasonable design, the optical distribution of light requirements can be achieved.
5. Driving technology. LED constant current drivers generally have two LED drivers: electrical and switching capacitance type. The driver current of the inductive LED driver is high. The end voltage of the LED is low, which is suitable for the application of multiple LEDs to drive multiple LEDs. Capacitor -type LED drivers are often used in high -power LED lamps. The end voltage and current of its LED can obtain high power and light -emitting efficiency. The design of the LED drive circuit may be complicated according to the specific needs, but during circuit design, it is necessary to consider that the power supply must have high reliability and stability, and the circuit must have various factors such as surge protection.
The technical problems faced by LED lamps In addition to the above, problems such as system design technology need to be further improved. In addition, there is no unified relevant standards in the LED industry.
LD energy -saving and environmentally friendly service life, DC driver, recyclable and reuse, solar green environmental protection and pollution -free, solar cell voltage is DC voltage. In the application, it is no longer needed to change the AC electricity to DC electricity, which makes it easy to use. And our social energy problems and environmental pollution problems will be greatly improved. Therefore, combining LED and solar may be an inevitable way for future lighting. Now there are very few applications in this area. There are already solar LED street lights, solar LED corridor lamps, solar LED lawn lights, etc.
LED energy -saving and environmental protection life is long. With the continuous improvement of the LED technology level, the continuous emergence of high power, high brightness, and small -sized LED lights, the application of LED lamps in various lighting fields will inevitably popularize, LEDs LED The lamps will definitely penetrate into people’s daily indoor lighting, life, and transportation. The combination of LED lamps and LEDs and solar energy will become the main force in the field of lighting in the future.
Now many municipal roads and villages have been installed with LED street lights, which have officially increased due to the surge in the demand of the street light market, which has appeared more and more LED street light factories. It is relatively chaotic, and the competition is also very bad. The editor of Yangzhou Nonor Lighting below will tell you why the LED street light market is chaotic. The first is that the street lights are non -standard products, so it is easy to turn on a street light factory. You only need to have certain funds and customers. Everyone can set up a street light factory, but the street light factory is also divided into strength, strong strength, strong strength, strong strength, and strong strength. The quality of the street light factory, the quality of the product is excellent, and the after -sales service is better. The disadvantage is that the price is slightly higher. And the small street light factory, the quality of the product will not have a large factory, and it is not guaranteed after sales, but his advantages are that the price is less cheaper. Essence Buy street lights to choose a larger factory to buy so that you don’t have to worry about product quality and after -sales. The second is the price problem. Because there are fewer staff members and less expenses, their cost is much smaller than large factories, so their product prices have an advantage than large manufacturers. The third is quality issues. Many small workshops do only one -time business and no after -sales service, so they will cut corners in the quality of the product, and they will not worry about their reputation. The big manufacturers are different. Compared with the price, they care more about the quality of their products. They prefer to produce high costs, and they will not cut corners because they do not allow their reputation to be damaged. In in summary, buying LED street lights still need to choose a strong manufacturer with guarantee and guarantee after -sales page. Don’t be greedy for small and cheap.
Smart Research Data Research Center News:
This Summary: LED exists with electrostatic release damage and thermal expansion coefficient equivalent bottlenecks and heat dissipation problems, so that its power cannot be made greatly and low brightness. The current commonly used high -power LED chips are 1W and 3W. It can increase the LED power by integrated chip, but now the technology is still immature, mainly to solve the problem of heat dissipation. You can also achieve high -power LED lamps through the strings, parallel or mixed connections of many beaded LEDs. The latter two are low -efficiency and less used. Multi -pearl LED series is the mainstream of LED lamps in the field of lighting.
The application of LED lights Due to the unparalleled advantages of LED lights with other lamps, LED lights are developing at a very fast speed and gradually replacing other lamps. Now LED lights have been widely used in various lighting fields. middle. Because the LED is small and flexible, it can be arranged into various shapes and can be controlled by computer programs. Therefore, text, images, animations, film and television and other static and dynamic patterns can be displayed. At the opening ceremony of the 2008 Beijing Olympics, LED lights showed its endless charm and advantages. LEDs are used in a large number of public monitors, such as various signal lights, landscape lighting, beautification of the street street, beautification of public entertainment venues, stage effect lighting, and building lighting. In the LCD display, LED is used as a backlight of the screen of screens such as computers, televisions and mobile phones.
On the road of transportation, LEDs are already used for controllable energy -saving street lighting, tunnel lights lighting, overpass lighting, traffic signal lights, etc. In terms of car lamps, many cars are now braking lights, location lights, steering signal lights, rear fog lights, reversing lights and other lamps. LED light sources have begun to use. With the continuous improvement of LED technology, technical problems are continuously resolved, and the continuous emergence of high -power LED lamps, the application of LEDs in the fields of indoor lighting, automotive lamps, studio, and watch lamps will be more popular.
The LED has many advantages, but there are many shortcomings and technical problems to be further improved and resolved. The following discussions are discussed from several aspects.
1 1. Large power LED technology. LED has the problem of electrostatic release damage and thermal expansion coefficients and other effectiveness bottlenecks and heat dissipation problems, so that its power can not be made greatly and low brightness. The current commonly used high -power LED chips are 1W and 3W. It can increase the LED power by integrated chip, but now the technology is still immature, mainly to solve the problem of heat dissipation. You can also achieve high -power LED lamps through the strings, parallel or mixed connections of many beaded LEDs. The latter two are low -efficiency and less used. Multi -pearl LED series is the mainstream of LED lamps in the field of lighting. However, there is a fatal weakness in series in series. This is a big bottleneck that restricts the application of high -power LED lamps in the field of lighting. Increasing the power of LED lamps, one is to increase power from the chip aspect, and the other is to optimize the circuit design to increase power.
2. Heat dissipation technology. Temperature is an important factor that affects LEDs. The increase in temperature will accelerate the attenuation of the LED, and the temperature at the chip node directly affects the life of LED. Therefore, the strength of LED heat dissipation capabilities limits the power size of the LED.
The heat inside the LED is mainly produced by the LED chip and printing circuit board. For small -power LEDs, the calories can be distributed through the method of natural conduction. Heat dissipates in many ways. In terms of heat dissipation design, it is usually considered from the aspects of LED packaging heat dissipation, circuit board heat dissipation and increased heat dissipation components.
3. Chip technology and chip packaging technology. The key to the development of chip technology is the choice of substrate materials and the growth technology of extension. The key to technology improvement is based on reducing defect density and how to develop more efficient and stable devices, and how to improve the lighting efficiency of LED chips is the most important measure of the current overall technical indicators. Traditional substrate materials include sapphire, SI, SIC, and currently popular materials are ZNO, GAN, and so on. The mainstream method of manufacturing extension is to deposit metal organic material chemical gas. According to LED Global Online in 2011, the University of North Carolina University proposed a new nitride growth process. This new process is expected to reduce the defects of the materials by one thousandths, thereby creating a higher brightness LED glowing two. Grade management.
4. Optical design technology. LED is a light source and has good direction. It can achieve the ideal optical curve through LED dot matrix design, lens and reflective devices, and secondary optical design, and even three optical design. This is also the difficulty of optical design. In the overall lighting, the lamp needs to have a large irradiation surface. You can use linear LED light strips to match with technologies such as light guide boards to make it a light source. LED car signal lights can be composed of reflex mirrors and light mirrors. Through reasonable design, the optical distribution of light requirements can be achieved.
5. Driving technology. LED constant current drivers generally have two LED drivers: electrical and switching capacitance type. The driver current of the inductive LED driver is high. The end voltage of the LED is low, which is suitable for the application of multiple LEDs to drive multiple LEDs. Capacitor -type LED drivers are often used in high -power LED lamps. The end voltage and current of its LED can obtain high power and light -emitting efficiency. The design of the LED drive circuit may be complicated according to the specific needs, but during circuit design, it is necessary to consider that the power supply must have high reliability and stability, and the circuit must have various factors such as surge protection.
The technical problems faced by LED lamps In addition to the above, problems such as system design technology need to be further improved. In addition, there is no unified relevant standards in the LED industry.
LD energy -saving and environmentally friendly service life, DC driver, recyclable and reuse, solar green environmental protection and pollution -free, solar cell voltage is DC voltage. In the application, it is no longer needed to change the AC electricity to DC electricity, which makes it easy to use. And our social energy problems and environmental pollution problems will be greatly improved. Therefore, combining LED and solar may be an inevitable way for future lighting. Now there are very few applications in this area. There are already solar LED street lights, solar LED corridor lamps, solar LED lawn lights, etc.
LED energy -saving and environmental protection life is long. With the continuous improvement of the LED technology level, the continuous emergence of high power, high brightness, and small -sized LED lights, the application of LED lamps in various lighting fields will inevitably popularize, LEDs LED The lamps will definitely penetrate into people’s daily indoor lighting, life, and transportation. The combination of LED lamps and LEDs and solar energy will become the main force in the field of lighting in the future.
Now many municipal roads and villages have been installed with LED street lights, which have officially increased due to the surge in the demand of the street light market, which has appeared more and more LED street light factories. It is relatively chaotic, and the competition is also very bad. The editor of Yangzhou Nonor Lighting below will tell you why the LED street light market is chaotic.
The first is that the street lights are non -standard products, so it is easy to turn on a street light factory. You only need to have certain funds and customers. Everyone can set up a street light factory, but the street light factory is also divided into strength, strong strength, strong strength, strong strength, and strong strength. The quality of the street light factory, the quality of the product is excellent, and the after -sales service is better. The disadvantage is that the price is slightly higher. And the small street light factory, the quality of the product will not have a large factory, and it is not guaranteed after sales, but his advantages are that the price is less cheaper. Essence Buy street lights to choose a larger factory to buy so that you don’t have to worry about product quality and after -sales.
The second is the price problem. Because there are fewer staff members and less expenses, their cost is much smaller than large factories, so their product prices have an advantage than large manufacturers.
The third is quality issues. Many small workshops do only one -time business and no after -sales service, so they will cut corners in the quality of the product, and they will not worry about their reputation. The big manufacturers are different. Compared with the price, they care more about the quality of their products. They prefer to produce high costs, and they will not cut corners because they do not allow their reputation to be damaged.
In in summary, buying LED street lights still need to choose a strong manufacturer with guarantee and guarantee after -sales page. Don’t be greedy for small and cheap.