Guan Baiyu: LED packaging technology is currently the biggest challenge

At the quarterly press conference of China's electronic information industry operation and color TV industry research in the second quarter of 2010, Guan Baiyu, deputy inspector of the Electronic Information Department of the Ministry of Industry and Information Technology, said that LEDs provide us with challenges in terms of packaging because of the light. And heat are all together in one device field. We hope to make the characteristics of LED luminous efficiency better, and more radiance and less heat, which is our pursuit.

Guan Baiyu believes that heat has the greatest impact on LED devices. If lighting is always achieved at high temperatures, it will greatly affect the life of the lighting device or fixture. So in this respect, LED lighting poses a serious challenge in terms of the structure of the package.

Guan Baiyu revealed that we need to meet the requirements of heat dissipation and shape in terms of packaging. In addition, we must know what to do in terms of materials. If we do not, the key is to enhance some materials and some projects developed in the short term.

The following is a record of Guan Baiyu's speech at the conference.

Guan Baiyu: The rapid development has brought the core development opportunities to some applications of the whole machine. In today's information products, especially in the development of flat-panel TVs, there are some new opportunities. First of all, we are developing in LED. Some reports on the development status of some situations and applications.

The first part is the significance of developing LED application industry and application. Everyone knows that we can make a description faster.

The development of the LED industry is a concrete practice to promote green manufacturing. The contradiction between energy shortage and economic development is a common problem faced by all countries in the world. It is an inevitable choice to take the road of energy conservation, environmental protection and sustainable development. LED and its application products have obvious advantages in energy conservation. The development of LED application industry is in full compliance with current economic and social development requirements, and is a concrete practice to achieve energy conservation, environmental protection and sustainable development.

In recent years, the rapid advancement of optoelectronic technology and the huge market demand brought about by the new light source revolution have led to the development of light-emitting diodes (LEDs) at an unprecedented speed and become a hot spot in industrial development. Since the introduction of LED in 1962, the technical level has been rapidly improved, the industrial scale has continued to develop, and the application field has been continuously expanded.

In terms of the development of LED in our country, we mainly concentrated on research in the research at that time. Such a development of the industry is still after the reform and opening up. Let's review the history of LED technology and industry development.

Since the birth of the first red LED in 1962, various monochrome LEDs of orange, yellow and green have been developed and used for signal indication and display, and gradually developed into small LED displays, which can display characters.

In 1991, there was a technological breakthrough in the development of high-brightness red LEDs by MOCVD epitaxy. Before we had binary and ternary materials, we used them and later developed the quaternary system. In 1994, the first light-emitting blue light-emitting diode was developed on a GaN substrate. This makes the display of the entire LED a full-color display, making a contribution to the screen on the outdoor high-brightness device.

Blue light stimulates phosphors and emits white light. It is also a journey in the field of lighting. This was invented in 1997.

We use LED to emit white light with three technical lines. One is to use white, red, green and blue to emit white light. On a chip, red, green and blue chips emit white light. We create a technology level that uses blue light to excite phosphors. White light, now a large number of LEDs are done in this way, and it is relatively mature to use three kinds of chips to mix and emit white light. Most of us now have a large LED display. It is equipped with a small number of pixels and equipped with LED display. It is very mature both indoors and outdoors. The screen technology should be well done. This device also needs to import some devices to match. But the current progress of LEDs in three colors has been very fast.

Last year at our anniversary, Tiananmen had four screens. There were two long screens near the monument. This was made with this chip and later placed on the south side of the monument. It is also made of white LEDs, which is also a way to excite phosphors and white light. Really can improve the performance of LEDs, first of all to improve the brightness, this is the most important and basic condition for the brightness of the light source. Nowadays, this LED can enter a variety of application fields, mainly forming a certain industrial scale in the display of fluorescent lighting. Like the picture just now, there is actually such a better application in decoration. The scale of this industry is relatively large.

The display screen is also getting bigger and bigger, because the color is beautiful, the image is clear, and there are various physical dimensions, flat, round, and irregular. In the city, there are also various kinds of projects, such as the 2008 Olympic Games. Everyone emphasizes visual impact. This is also a work done by a good project and a milestone in application. Nowadays, a lot of screen displays have been made in the aspect of urban quantification, especially the display of images, and the decoration of the whole city has also been done better.

Continuous breakthroughs in technology, continuous improvement of luminous effects, and continuous development and production of technical challenges in the field of lighting. Now we can achieve luminous efficiency of more than 100 watts. There is a big gap between indoor lighting and outdoor street lighting. I hope to enter the field of indoor lighting, such a luminous efficiency should reach 120-150 watts. Now some big companies have actually achieved the luminous efficiency at the forefront of the United States, Corey, which is now doing 160 watts. Effect. This seems to be improving every year. There are a lot of technical work to be done in the development of all the key technologies. In addition to the development of the chip to do a lot of core technology development, there is a challenge in the packaging, because light and heat are together, in a device field. We hope to make the characteristics of LED luminous efficiency better, and more radiance and less heat, which is our pursuit. Heat has the greatest impact on this device, and if it is always illuminated at high temperatures, it can greatly affect the life of a lighting device or fixture. So in this respect, LED lighting poses a serious challenge in terms of the structure of the package.

The application of LEDs can be practiced in many fields. Now the following figures are seen by everyone, all of which are familiar backlights and have lights. There are some lights, flashlights, and desk lamps behind. These are not particularly large applications, but they actually enter the lighting and enter our general lighting, an LED streetlight, and an indoor lighting.

Back to the street lights, street lights and general lighting this area includes indoors in this field, the highest level of products in the field of lighting, so LED as a source of illumination.

The lighting has a wide range of shapes to meet different functions and requirements. As you can see, street lighting is composed of hundreds of LED lighting devices, which have some related control circuits, including the internal driving circuit, including some power switching circuits inside, and some related whole lamps. Light distribution design. In terms of luminaires, it is not a traditional fluorescent lamp, fluorescent lamp, or energy-saving lamp. It is a simple device, which forms a small system.

Some of the following are to do a solar cell and wind power. The LED light is a factor of power supply. This is more complicated. For example, solar cells and wind power are subject to some restrictions. There is no sun at night, there is no wind. This has a problem of energy storage. There is an energy storage battery and LED lights at night. Ability to provide electricity. In this case, there is also such a factor of energy saving and environmental protection. What kind of battery is required for the battery? Some batteries that we used to cause serious pollution to the environment cannot be reused. We must use new energy-saving batteries. Under development.

These are some types of lamps that require relatively high luminaires. The entire tunnel is illuminated 24 hours a day. This quality stability and reliability are relatively high. In terms of indoor lighting, we can use them together in a fluorescent lamp. . Another case of making an incandescent lamp, 220V, can be done in the lamp.

In terms of the entire application field, it has done a lot more in terms of display. There are some products in the supply market for some small miner's lamps and flashlights. But some flashlights have done so much because the technical requirements are not particularly high.

In the past few years, the development of backlights has been relatively fast, and the development and use of LED backlights have been carried out in order from the small to the largest LCD screens. It is still just getting started in public lighting.

The second part is the development status and planning of the LED application industry. Its excellent performance and good prospects for industrial development are all intensifying efforts to promote industrial development. The mainland is now the fastest growing and most potential area for LEDs.

From the second half of 2008 to the whole of 2009, the world experienced the negative impact of the financial crisis. Many industries have taken great measures to deal with the financial crisis, but they have been affected by the decline in production capacity and the decline in economic efficiency. However, the overall development of the LED has maintained a rapid development trend, which is about 20%-30%, which shows the potential of the development of the electronics industry and maintains such a good momentum.

The first part is the continuous optimization of the industrial environment. The government attaches great importance to the development of the LED industry and regards it as the driving force for industrial development. As a dynamic emerging industry, it has issued a series of policy measures, and some industry standards have been introduced. In order to promote the development of industrial norms as soon as possible, it provides an important basis for the development and production of LED products. One of the characteristics of the market economy is competition. In addition, with this aspect, we still have a good environment in the country's industrial standards. We are all standardizing in the country around this related work.

Some local governments have introduced some policies and their technological innovation capabilities have been continuously improved. We are in the seven or eight years. We have come step by step. We did not expect it to be so good at the time. As long as we see their good prospects, the resources of many aspects can be invested in technological innovation. We can have a very fast pace. We have a more open way to do this. We take some chips from big companies and go faster in landscape technology. In addition, we have a certain level of domestic chips. We need one step. One step to achieve our industry goals, our industry scale has maintained a 30% growth, 30% is still a little higher. We are producing a rapidly expanding situation of such a manufacturer. At present, there are probably a few manufacturers of our chips, including some research institutes, some of which are relatively large, with more than 1,000 packaging companies and 1,000 downstream application companies. The packaging companies we are talking about are not this type of devices. It turns out that we only do LEDs in monochrome display. The technologies we have made are all medium and large, so the technical content is not particularly high, so there are many such companies. Downstream applications, including companies that make a variety of applications, this data is only a reference, we also need to do some research and statistics.

In the industrial chain, it was initially formed. In the whole country, LED chip packaging and application products have been formed. Some enterprises are doing support in the development of our industry, but in general, the number and technical level of enterprises have yet to be improved. In addition, such a layout of the industry is mainly in the Yangtze River Delta, the Pearl River Delta, the Bohai Bay and the Jiangsu region, mainly as our four bases.

This is a schematic diagram of the upstream, midstream and downstream industries.

This is an approximate composition of the distribution in the market industry.

The chip accounted for 50.2%, the package accounted for 33%, and the application accounted for 65%.

There are also some new developments in this aspect of the application. Everyone knows that South Korea has adopted LED backlights to the forefront. We generally use how many LEDs to produce to calculate. Previously, the size of this LED model was relatively small, up to 61. But now I see this situation as a growth, but the exact amount is produced by epitaxial wafers. There is no exact number. Still everyone is optimistic about such a development lens, like the headlights of a car, which is more difficult to do in electronics. Another opening ceremony of the Olympic Games is also an excellent example of a good application.

Backlight application. Like the application prospects of backlights, we know that there should be several aspects: there is a better color gamut coverage, which is originally a red factor, using LED red has a better brightness supplement, so in terms of image quality There is a big improvement. In addition, the power consumption is smaller, and the area backlight control is adopted, which can have some control in the image control. In addition, the resolution of the dynamic image is improved and its stereoscopicity is improved. In fact, a technology is being done, and there is a technical indicator based on electromechanical itself in the management of heat. It has a high-performance display in terms of energy saving and environmental protection and improving picture quality. This is some indicators and status quo.

This is the case for my domestic LED business layout (see PPT).

Industrial planning promotes the healthy and orderly industrial structure. At present, we still need to make good industrial planning policies and create a good development environment for industrial development. Speaking of some policies promulgated by our country, "National Medium- and Long-Term Science and Technology Development Plan", the "high-efficiency, energy-saving, long-life semiconductor lighting products" is listed as the first priority theme of the first key areas (energy) (industrial energy conservation) )in.

In response to a major financial crisis, the State Council approved the “Electronic Information Industry Adjustment and Revitalization Plan” jointly edited by the National Development and Reform Commission and the Ministry of Industry and Information Technology. It was issued in April last year. It clearly “supports the promotion of LED energy-saving lighting products in the mainland” and “research and introduce The incentive policy for the promotion and application of semiconductor lighting has given important support to the semiconductor lighting industry.

In August 2009, the six ministries and commissions of the State Council issued the "Opinions on the Development of Semiconductor Lighting Energy-Saving Industry". Based on the analysis of the status quo and development trend of the industry, the paper put forward the guiding ideology, development ideas, key areas and related policy measures for industrial development.

We are planning the “Twelfth Five-Year” development plan. This is the plan jointly prepared by the National Development and Reform Commission and our ministry. The first one is to do a good job in LED and application industry development strategy and development plan.

Second, do a good job in industrial development and deployment, and guide the industrial science in an orderly and healthy development. The deployment of industrial development includes the deployment of the industry chain, including application deployment.

The third is to increase the intensity of independent innovation, as the most important content. In the development of LEDs to the field of lighting, some large companies in China have an absolute advantage in intellectual property. As a developing country, if we have an advantage, we have made an international increase in our intellectual property as an important task for us.

The fourth is to do a good job of standard revision and improve the standard composite detection capability and service capability.

Fifth, do a good job in intellectual property analysis and service, and gradually establish an intellectual property work system. As a separate work, this is the weakest link we have at the moment. We intensify our efforts to improve our independent innovation capabilities and do a related basic work. When we are independent innovation, we must know which proprietary technologies have been deployed in our country and large companies.

In addition, we can also find the direction of independent innovation, and we must not blindly innovate.

In terms of improving the capacity for independent innovation in China, we must first increase investment in independent innovation of the LED industry, support enterprises to develop core technologies and large-scale production technologies with independent intellectual property rights, and narrow the gap with the world's advanced level.

From the Ministry of Industry and Information Technology, the National Development and Reform Commission has supported enterprises to develop core technologies and large-scale production technologies with intellectual property rights, and narrow the gap with the world's advanced level. Priority is given to basic, common technologies and core technologies that need to be addressed, with a focus on breakthroughs in key technologies for epitaxial growth and chip manufacturing.

The third point is to enhance the packaging capability of LED devices, which is also a special concern in packaging. Because it meets the requirements of heat dissipation and shape in terms of packaging, it is also necessary to know what is in the material, and the key is some materials and some projects developed in the short term.

The other is to focus on typical applications such as LCD backlight, automotive lighting, indoor commercial lighting, landscape lighting, etc., to promote the development and industrialization of LED products, and to drive the development and industry of LED control, drive circuits and power management chips. And gradually push to the road lighting, and finally achieve universal lighting.

Now everyone knows that road lighting is doing, but we have to explain that road lighting involves more factors. If it is in terms of lighting efficiency, power consumption, life and reliability, there is currently no particularly comprehensive study. Because this involves all aspects of the device research. We put this goal forward and hope that everyone can pay attention and hope that there will be some research work in this aspect.

The characteristics of the LED industry, as we have just said, repeat its regularity. On the basis of analyzing the status quo and development trend of the industry, the guiding ideology, development ideas, key areas and related policy measures of industrial development are put forward. It is a feature of multi-technology integration.

The industrial chain is long, involving semiconductor materials, optoelectronic devices, integrated circuits, new light sources, lighting appliances, etc., to promote industrial development needs to be fully considered, in accordance with the laws of the market economy, in accordance with the laws of high-tech industries, in accordance with application development and industry level Adapt to the principle of strategic deployment.

I want to make a street light consisting of a lot of LEDs, with high power or low power? Or a combination of size and power? We use a unified layout display or partition control? How can we do better in control? There is a big space above the scheme, and there is a systematic consideration. For lighting appliances, this aspect of lighting, there is a holistic consideration for promoting industrial development. We hope that everyone will proceed to the next strategic deployment in accordance with the laws of the market and in accordance with the principles of technology development and industry.

Actively developing national and industry standards in this area is an important part of our work. In the development of our industry, we can have technical legislation and technical specifications for our use. For some companies, such as supply technology, such as in epitaxy and chip manufacturing, in terms of improving effects, innovation in chip structure, in terms of device safety and luminaire safety and system security, in method and reliability Sexual aspects of these standards must take into account such a category of public, this should do the job.

In the products with more urgent market demand, product standards will be introduced as soon as possible, and more concentrated in industry standards and enterprise standards.

Product standard companies have to do more work. Focus on standard compliance testing, strengthen the construction of independent third-party testing organizations, actively improve business capabilities, do a good job in testing and evaluation of LED application products, provide relevant services for enterprises, and provide decision support for the government.

Here is a point, because LED as a light source, there is a big difference in performance, there are some features that are not recognized. How do we use this new light source to do more work, it involves light, electricity and color. In addition, there are some differences with traditional light sources. It has its own characteristics. This requires some research on the detection method. Some research on the test instrument is not only a problem of detection. I hope that everyone will pay attention to this problem because To be a new product, everyone will do related work in all aspects, put these ideas together, and have a better and more comprehensive chain for LED performance indicators.

We also do a job, the new light source is very good, but we still pay attention here, its impact on the human body, especially the impact of the eyes, like some lights, this LED is a strobe light, but actually did it After testing, I can't say that your light is a very safe and very good light source. You must be careful when playing this flag.

Associations and standardization organizations like the ones currently studied internationally have an impact on us, but how much influence we have to do some research work. For this relatively complete work, we have to do some research with related projects. We still have some work to do in this area.

The following describes the standards for LEDs and their applications.

In 2004, we set up a standard outline for the application of lighting products. We use semiconductor lighting as a development application field. We have arranged some work. At present, nine industry standards have been formulated and officially implemented on January 1 this year. In order to implement this industry standard, we organized two publicity efforts for these standards in January and July 2010. Based on this requirement, we have done a better job in new energy devices.

In addition, there is a cooperation group with Taiwan. It is the same in English, and it is not the same when translated into Chinese. It doesn't matter what the name is.

There are some general standards in a technical specification that have been promulgated.

Three standards have been developed in the field of flat panel display technology, related to LED backlights. In addition, some standards have been issued with respect to LED display backlights.

In the semiconductor lighting industry, 11 standards are being developed. At the end of this year, there are still ten standards to be announced and implemented at the beginning of the year. There has been more enactment in terms of reliability.

In terms of intellectual property, we have more liaison with the State Intellectual Property Office. According to the requirements of the State Intellectual Property Office, we are doing analysis of semiconductor lighting, including LED backlights. We have also established Such a service organization.

In fact, it can not use a universal device to meet the needs of all aspects of the people, we must develop some customized LED products according to your needs. In this respect, we are also willing to have a better docking with the LED manufacturers of the whole machine and system manufacturers, especially in the technical aspects of the backlight, to do a good job in LED backlighting.

Hydrogel Films For Laptop

Hydrogel Film,Film Tpu Flexible Hd,Hydrogel Vs Glass,Tpu Film

Shenzhen TUOLI Electronic Technology Co., Ltd. , https://www.hydrogelprotectors.com