subject: China Led R & D And Industrial Development, Strategic Thinking-led, Strategic Thinking - [print this page] In recent years, LED Industry has developed rapidly, at this stage in the industry hundreds of thousands of people, nearly a hundred research institutions, businesses thousands. Competition from the global LED industry structure, the current LED packaging company in China to upgrade the automation level of fast, mainly to road lighting industry breakthrough lighting applications development, LED encapsulation and application of scale and industrialization of technology in the world with important influence; on the other hand, mainland China LED epitaxy and chip production business and technology upgrading to a certain extent, the upstream industry maintained a good momentum of development, but generally speaking, the relative competitiveness in the global is still relatively weak. In this context, the Ministry of Science and timely start of the "10 City 10 000" program, which greatly promoted the national government, industry, and academic sectors of the semiconductor lighting career passion. On this occasion, we will research in recent years formed the basis of the mainland of China LED R & D and industrial development of ideas put forward for the industry peer reference and corrected.
A future industrial development characteristics: technology and the market grow
Actual Lighting The output flux is usually in the thousands to tens of thousands of lumens lumens, while the current single high-power type white LED luminous flux is only about 100 lumens, so the semiconductor lighting is usually tens to hundreds of clusters composed of white LED. In terms of the current LED performance, low-voltage, constant current drive caused by the use of cluster LED semiconductor lighting must be solved by the great heat dissipation and low-voltage AC power to constant change caused by Power supply Management issues. In addition, the traditional power type LED package of small luminous flux, high-brightness light-emitting properties can cause very serious glare. Therefore, the semiconductor lighting technology not only limited to the chip fabrication and packaging technology, but a design that contains the optical, thermal and power management, etc., system-level technology.
From the LED epitaxial wafers to the final lighting needs through the material epitaxy chip production die package, a series of lighting design and assembly of industrial chain link. On the one hand, from the wafer to the final lighting and display applications, the various segments of the industry chain can form a separate product, and have their own technical barriers and research needs; on the other hand, the quality of end-applications will be subject to each link impact. For example, the core component of semiconductor lighting is LED chips, but the luminous efficiency of LED chips 100lm / W, does not mean that the efficiency of semiconductor lighting also reached 100lm / W; more importantly, semiconductor lighting products to gain market recognition , including the lighting efficiency, reliability, comfort, etc., the human eye's overall performance compared to conventional lighting products must have a clear advantage. In other words, even if the efficiency of semiconductor lighting achieved 100lm / W, does not mean that it necessarily accepted by the market, semiconductor lighting itself needs of many scientific problems, such as lighting effects and quality, including color, color product consistency, such as the human eye comfort.
Only when the technology allows semiconductor lighting efficiency, lighting quality, design and other aspects of novelty advantage compared to conventional light sources, semiconductor lighting is possible to enter and continue to develop the market. On the other hand, the expansion of markets will lead to production expansion and increasing investment in industry R & D to accelerate technological progress, so that performance and costs and prices declined. Alternating back and forth these two processes, ultimately leading to the rapid development of semiconductor lighting industry.
