How to overcome the limitations of the cost of LED lamps

Recently "semiconductor lighting" magazine LED lamp current how to break the limitation of cost problem interviewed the general manager of Jiangsu history of Ford Au Optronics Co chairman Shi Jie, Hebei Lide Electronics Co., Zhu Xiaodong, Ningbo Liaoyuan industry group vice president Gu Zhaohui, Sichuan Sony light limited company chairman and CEO Zhang Ming, Philips Lumileds Zhou Xuejun, director of Asia market OSRAM GI SSL Sales Director Alex Lee Cmc Markets Asia Pacific Pty Ltd.

"Semiconductor lighting": to develop a reliable, low-cost economic applicable LED lamp, the enterprise should be in the chip, power supply, packaging, heat and other aspects of a breakthrough?

Zhou Xuejun: from the light of the cost structure, the chip will account for about 40% of the total cost. Therefore, in order to reduce the price decline in the cost of lamps, the chip is the key chip and cost reduction is the result of interaction of multiple factors, with the increase in demand caused the expansion of chip production, technological progress and improvement are indispensable factors to reduce the price of lamps and lanterns.

Alex: LED is the core of SSL, chip technology is the key to high reliability, long life, to break through the international patent manufacturers will be a major challenge. The two optical system and power supply is another important aspect of the efficiency and reliability of the system. With the increasing efficiency of LED, the photoelectric conversion efficiency is more and more strong, the importance of heat dissipation will be lower and lower, but it is still a problem to be solved. Therefore, it can be said that technological innovation is the key, the domestic low power LED packaging technology has matured, in the next few years will fully grasp the high power LED packaging technology, to be improved is the chip technology.

Zhang Ming: first of all, it is certainly the focus of chip manufacturing, because the chip in the largest proportion of LED lighting, but also the technology monopoly. Whether it is the chip's optical efficiency has been greatly improved, or the cost of the chip has been greatly reduced, can effectively improve the cost and competitiveness of LED lighting products. Power supply is also one of the important factors that affect the reliability of LED, but with the gradual maturation of AC LED, power will no longer be a bottleneck. Packaging technical difficulty is relatively small, and a large number of packaging enterprises, the impact will not be too large. The problem of heat dissipation will be smaller and smaller with the increasing of the technical index of the chip.

Gu Zhaohui: on chip, power driven, packaging, cooling and other different aspects, I think the most need to break the link reliability of power driven, because on the street, now the light effect of the LED light source can basically meet the demand, but the reliability of drive in the street lamps, or can not keep up, the problems exposed is mainly some the lamp can not reach the standard technical parameters, the failure rate is too high. Now the quality of the stability of the drive is very few, especially the high power of the driver is less stable quality. In addition, the heat transfer is also very important. Although the LED light source itself has a long life (good quality products), but if the heat is not good life will be greatly reduced. In order to achieve high reliability and low cost of the economic application of lamps should be in the LED light source ratio, failure rate and life of the driver, the reliability of the radiator to make a breakthrough.

Jie: I think the current LED lamp is the most important consideration is how to solve the problem of the stability of the technical process of industrialization, how to make the product better consistency. In addition, the design of the lamp and the choice of technical route is also very critical, that is, how to develop the lamp according to the performance of the structure design. This is the most critical to solve the problem of LED lamps heat.

Zhu Xiaodong: all the above links, there may be a breakthrough in technology, improve the efficiency of the chip, the package uses a chip integrated structure or cheaper raw materials, heat dissipation, such as conductive plastic. This is a comprehensive system, each link has to contribute. But the most influential is the design concept. For example, now the design idea of LED lighting affected LED display design, designers tend to display some characteristics in the design of LED as the essential characteristic of LED, no one carefully analyzed in the display application of LED should be what characteristics do lighting LED what should be characteristic, whether can find out the difference between the two, the difference is clear. For example, the application of LED in the display requires a high degree of consistency, must be constant flow, but in lighting applications, although there are uniform requirements, but the darkest place and the average value of 40% is also qualified. In addition, the current can not meet the requirements of uniformity, then make constant flow, will increase the cost of.

"Semiconductor lighting": the development of economic application of the LED lamp, the enterprise in the operation and management, cost control, technical innovation, channel construction and other aspects of what can be tapped potential? The day before, zhaga alliance, do you think the unified interface standard for what role for the functional lighting market started?

Zhang Ming: technological innovation and channel construction should be the most important factor. Technological innovation can improve the practicability of the products from the aspects of raw materials, product structure and production process, and greatly reduce the product cost. Channel construction is the most effective means to ensure the product scale efficiency, promote the standardization and standardization of LED products, and further reduce the cost of products. The role of enterprise management is to promote technological innovation, strengthen quality control, increase channel construction, and strive to minimize the cost and maximize the market.