With the launch of the national semiconductor lighting project, the LED upstream industry has developed rapidly, and the development of the chip industry is the most eye-catching. The LED industry chain includes the production of LED epitaxial wafers, the production of LED chips, the packaging of LED chips and the application of LED products. Among them, the epitaxial wafer has the highest technical content, and the chip is second. However, domestic enterprises are mainly concentrated in the packaging field where the downstream technology content is not very high, and the upper and middle reaches of the field has only gradually developed in recent years. The domestic LED chip supply capacity is far from meeting the needs, and must be imported in large quantities. Facing the industry brings huge opportunities and challenges, how should we view the development trend of LED chip technology? How can we successfully enter the era of high brightness? How to maintain the sustainable and healthy development of China's LED chip industry? Faced with various problems, this topic conducts a comprehensive analysis of LED chips, interviews industry experts, explores the development trend of the industry, and strives to conduct a comprehensive report analysis of the current status and future development trends of the LED industry.
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Li Pei, Sales Manager of Hot Speed ​​Company: (I hope that manufacturers can quickly launch high-efficiency and low-cost chips) Our hot speed company adopts chips from Nichia and Cree. The reason for choosing them is mainly because of the high light efficiency of the products. However, the high price is also a thing that has always been embarrassing for us. We hope that manufacturers can quickly bring to market high-efficiency and inexpensive chips under the premise of ensuring quality, and can quickly cooperate with manufacturers to provide application-to-product solutions. .
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Head of Guangzhou Zhengben Semiconductor Lighting Products Co., Ltd._Tang Yingjie: (Selecting chips will pay special attention to product quality and reputation) We generally use Taiwan wafers, Korean semiconductors, and American cree chips. The models generally have 5050, 3014, 3528 and so on. When we choose, we consider the price/performance ratio. For a simple example, the US cree chip has good quality and high power, but the price is relatively high. Some budget customers are forced to give up using the chip because of price problems. However, when we choose the chip, we pay special attention to the quality and reputation of the product. Although the price is also an important reason, the difference in procurement channels can make certain downward adjustments. Therefore, the quality issue is still a priority. It is hoped that LED manufacturers can improve technology and reduce procurement costs.
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Wei Haoming, Guangzhou Nanke Electronic Planning/Business Manager: (The actual parameters of the chip are quite different from the nominal parameters.) I think that although the chip produced in Taiwan is not well-known, it is worthwhile to choose the price-performance ratio. At present, there are large differences between the actual parameters and the nominal parameters when the manufacturer produces the chips, and it is hoped that there will be a great improvement in the future. The manufacturer's LED chip does not necessarily do the bigger the better, the key is 1, cost-effective; 2, the indicators meet the requirements; 3, stable performance. These are the important factors that our users choose to use.
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Jingri Lighting Hugong: (LED manufacturers should consider the versatility of LED products) I think that when choosing LED, pay attention to the luminous flux, and should pay more attention to the Vf value of the LED chip. In addition, the thermal resistance of the LED is determined to determine its life expectancy. The parameters, of course, the stability and consistency of the LED in the actual use process is an important indicator to measure the level of LED technology. LED manufacturers should more thoroughly analyze the inherent technology of LED chips, so that users can understand the product characteristics in detail, so as to better apply the product. At present, LED packaging forms are on the market, and users have to consider new design costs while replacing LEDs. Manufacturers should consider the versatility of certain links when designing products in the future. The same chip different packaging technology will result in different results. The new packaging technology will continuously improve the performance and efficiency of LED. How to ensure the stability of the new technology without long-term demonstration? How is it accepted by users in a short time? These are the issues we have been thinking about.
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Yang Heliang, deputy chief engineer of Guangdong Delos Lighting Appliance: (LED's light efficiency continues to improve and promote the development of LED lighting) We have been using Cree's chip because its stability is better, but the price is higher, still It is reflected in a test that its sealing is not good enough, that is, the package may need to be improved. I hope that the original LED chip manufacturers and sellers can give us more technical support, but also hope to continue to improve the LED light efficiency and promote the development of LED lighting.
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Engineer of Haoyu Optoelectronics (Dongguan) Co., Ltd._Sun Jiangzhi: (LED's luminous efficiency, high color rendering index is the key factor of choice) CREE, Nichia, Dongbei's chips have brand superiority, quality is guaranteed, but the unit price is high . When we choose the chip, we not only focus on the LED luminous efficiency and high color rendering index, but also pay special attention to the relationship between Tj/Ta and luminous efficiency and the thermal resistance of LED. It is hoped that LED chip manufacturers will be able to develop and produce more and better products in the future, from the perspective of improving light efficiency, color rendering index and cost reduction.
Editor: China Lighting Network Feng Yaoyuan
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