High Purity,2

Analysis of ultra-high brightness LED Products-LED, lighting, lamps – Lighting Industry

Editor’s note: energy efficiency and green “technology has always been a talented members of the LED manufacturers, the long-term investment projects, other than the search for greater efficiency has been and the high brightness LED products in the light of current trends and LED technology, the rapid development of the IR LED illuminated frame LED will continue to use the entire production to follow.

To increase the brightness of the LED light visible, excellent performance trends, medium and low, but a tendency for steady growth. But this good or bad competing points of different manufacturers, low prices and stiff competition in R & D of LED manufacturers and technological development, it is light problem. Interview with the founding of the Materials and Engineering, National Chung Hsing University, Professor Dongxing is Wu discuss current trends and applications based on the university based research laboratories to commercialize the new technology. to break is the development of applications, and the LED technology and the market are still many barriers Many semiconductor materials in China, the LED is only one of the basic structure of the current situation and the epitaxial power directly to the use of light energy from the start, the positive and negative electrodes, the supply of semiconductors in Terminal 2 is used, where the current electronic Loch support and is produced in the rest of the energy released in the form of light, low energy and high-energy photons of different wavelengths of light to produce, the semiconductor industry is to build an LED illumination. In addition, a new generation of lighting and slow demand for training in the LAN, the LED distribute the light is brighter and the outlook for the entire thermal contrast fluorescent lamps, mercury or tungsten, LED High light efficiency, long life, good performance low power consumption pollution and other benefits.

This suggests a number of insights and market demand for lighting the scale effect, to extend technical effect of these trends, the situation gradually and the maximum concentration of producers of the strong growth in LED technology for high performance. Although the term developed by a white LED technology to the stage, but ..Finally, to see the power of 0.1 W, the light power are limited, it is increasing in many parts of the LED must be included in a new generation of light “instead of onions. Although, as the decor, lighting, the practical application of these cases more or less have applications on the market, but it’s hard to get promoted at a high price per unit, so wait for reasonable market expectations, but. Therefore, the LED can light the further expansion of the market, the biggest problem the glory of patents for features such as the unit price is too high ..Nodes, ie LED lighting a two-year replacement of lighting inside is very difficult. However, most LED manufacturers do not give up or do not, keep trying other applications based on the market, how to achieve control panels for large outdoor lighting, portable signs. .and many other systems, the strength and experience to the development of LED lighting technology, you are making the future role of the LED can expect Fitness Club, to create something new too much light. Anti-urgent development of franchising by foreign manufacturers, LED patent While LED technology patents, the super bright LED in Europe and the United States, Japan and other LED manufacturers is in the hands of the technical level is very high in the Taiwanese Skynet court LED patent law more effective use of technology and products to prevent but the demand for round the lower class, and then how to break this problem, Taiwan LED manufacturers are an urgent task. Chung Hsing University, Materials Science and Engineering Laboratory, the concept of producing instruments for the semiconductor-production for his team, mirrors and technology for low-temperature batch of successful introduction, the high reflectivity and heat dissipation is the new ultra-bright LEDs. Process in terms of cost and complexity, but without costs in Japan and other countries, including the product performance, energy efficiency, light and not to reduce fighting as members not behind the Japan and U.S. LED products.

Chung Hsing University, Materials Science and Engineering Laboratory on a new technology based R & D successfully developed more than conventional LED brightness, the price remains the high-power LEDs for producers to international competition in Taiwan LED products to reduce development. Transfer of technology to several manufacturers in Taiwan has been licensed, have low costs and high quality new LED products in Japan, South Korea and China have been sold ..and elsewhere in Asia, the popular fears in the face of global optical manufacturers. the importance of light and the key to success Epitaxy rapid development in recent years under glass and high purity of the selection of raw materials, to control the temperature record accuracy and timeliness of the molecular components of the game have access to the semiconductor heterostructures and high-quality semiconductor quantum double tree LED, a variety of objects to a crystal layer by layer build up.

This is a discussion after the efficiency of electro-optical quantum efficiency of the internal structure (InternalQuantumEfficiency, WQI) is greater than 90%, although the AlGaInP LEDs have a wide range of materials that show through the fixed network (latticeconstant) and the GaAs substrate with the ideal . But ..such as GaAs and the band gap is smaller than the difference in energy of these materials, LED light source is isotropic, it is almost 50% of the light source is a small energy difference between the GaAs substrate is absorbed or lost. Additionally, if the structure is not the appropriate provisions allocation for power LED, absorbed the material light and solid-state light source, a high refractive index over the edge of a low refractive index (n = 1), most of the light reflected from the impact of the real problem arises in the external LED quantum (ExternalQuantumEfficiency, EQA) to reduce significantly reduced or even a small part of the other.

To answer these questions and a light solution of Dr. Wu Chung Hsing University, bright LED technology, which make a combination of mirror and adhesive technology, the most important concept of a reflective mirror substrate is developed, and then our own R & D

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