As an important form of packaging, CSP has attracted much attention in the LED industry in recent years and is also the most controversial technology. In the past two years, almost every year, people are asking, "Is the first year of CSP coming?" Of course, there are also many "masters" who have predicted with categorical conclusions: "It is next year, next year will definitely become the mainstream." In fact, every year CSP has not been able to sweep the market as predicted, it can be said that it is still relatively "cold". Especially in the mainland market, CSP technology has always faced the embarrassing situation of “satisfactionâ€. Although almost all new products and packaging companies are paying attention, there are not many products that are actually put into the market. Looking back at the 2016 Guangya Exhibition, Gaogong LED found that almost every packaging manufacturer expressed optimistic about the prospect of CSP packaging, and even many packaging factories have begun to layout. At this year's Guangya Exhibition, CSP did not continue last year's "hot" power to turn the tide, but suddenly became somewhat "quiet." Is CSP cooling down, or is it still in the early stage of the outbreak? With such doubts, Gaogong LED has conducted research on several packaging companies that continue to force CSP to see what they say? Zhang Wei of Huacan Optoelectronics Flip Technology Department, relevant person in charge of Guoxing Optoelectronics, Tan Gang, vice president of sales of Donghaoguang Electronics, Zheng Haibin, director of marketing of Zhaochi Energy Saving Lighting, Zhu Xihe, general manager of Xingguangbao, and Liao Yonghong, vice president of sales of Keyixing Round table dialogue. Why did CSP fail to produce mass production? Zhang Wei, Manager of Huacan Optoelectronics Flip Technology Department In fact, this year's enthusiasm for CSP is still very high, after all, CSP does have its own advantages, such as small size, high optical density, flexible application, etc., which determines the CSP has a good prospect in the application. However, the current CSP does have some technical difficulties, such as yield, reliability, consistency, and the process route has not been unified, resulting in many manufacturers failing to mass production. In addition, the cost is also high. Currently, CSP is mainly used in Flash and backlight. However, the market capacity of these two fields is relatively small, but the application in other emerging markets is still trying and is not fully opened. This is also CSP. There is no reason for mass production. Yuan Yikai, director of Guoxing Optoelectronics R&D Center At present, there are two main reasons for the lack of CSP. First, the technology itself is difficult, and it is necessary to solve the problems of materials, processes, yield, reliability, heat dissipation, stress and the like in a smaller size and precision, and requires a large equipment investment. At the same time, the technical routes and equipment solutions of each family are still quite different, which makes the investment have certain uncertainty. Second, there are certain difficulties in application promotion. The application support is not perfect, and new high-precision equipment investment and heat-matching heat-dissipating substrate are required, which delays the scale development of the product. Tan Gang, Vice President of Sales of Donghao Optoelectronics First, new products require new equipment. The current LED market profit is getting weaker and weaker. Many companies are relatively cautious in investing in new equipment, which affects the overall mass production. Second, the current CSP products are mainly used in the subdivision of special requirements such as backlight flash car lighting, and in the general lighting market, SMD can not compete in price with 2835 3030 5730. Therefore, many packaging manufacturers that do the general lighting market are only concerned, and there is no big move. I believe that as the development direction of LED packaging, CSP products will definitely be paid more and more attention by enterprises. Some enterprises with technological innovation ideas have already invested in large-scale research and development. Dongxun Optoelectronics plans production capacity in the second half of 2016 and will gradually release it in 2017. Up to now, the CSP of 1W or above has reached the capacity of 15-20KK/month. With the continuous availability of equipment, the production capacity will reach 40-50KK/month by the end of the year. Zheng Haibin, Marketing Director of Zhaochi Energy Saving Lighting As a flip-chip package product, CSP has relatively high cost, high design requirements, and the production difficulty has not yet reached a large scale. At present, the CSP of Zhaochi Energy-saving Lighting is taking up, and the monthly shipments are above 20KK. General Manager of Xingguangbao, Zhu Xihe CSP technology in the field of LED is not mature, small size → high production process requirements → the accuracy of production equipment and the level of control personnel are increasing accordingly → the price of production equipment determines the level of precision → mass production yield And cost is the biggest consideration. In addition, the distance control between the chip and the chip, the position matching degree control between the chip and the substrate, the control of the wavelength range of the epitaxial chip, the uniformity control of the phosphor thickness, the dispensing control technology, the sealing property, etc. are also caused by the CSP. The reason for not really starting. Liao Yonghong, Vice President of Sales of Keyi Star First, CSP R&D and production itself requires certain R&D capabilities and resource inputs. Many manufacturers are reluctant to make early-stage trial inputs, because no one can determine which market direction is correct at this stage. Secondly, the user side also needs the lamp manufacturer to cooperate with the joint development. Now there are not many manufacturers with such cooperation ability, which makes the application end delay to develop suitable application fields. What are the misunderstandings of the application side to the CSP? Zhang Wei, Manager of Huacan Optoelectronics Flip Technology Department Since the birth of CSP, there have been some misunderstandings on the application side. First, CSP mainly relies on flip chip. Everyone feels that it is free of packaging and saves the cost of materials such as brackets and wire bonds. The price should be very low. However, after all, CSP relies on flip chip. At present, both flip chip and CSP itself are relatively inferior in yield and material maturity, resulting in a low cost. Second, CSP In essence, it is the packaging technology. Whether it is done by the chip factory or the packaging factory, I think it is mainly determined according to the needs of customers and the market. Yuan Yikai, director of Guoxing Optoelectronics R&D Center Although CSP technology has been proposed for many years, due to technology, price, capacity and other reasons, many application-oriented enterprises still have doubts about CSP technology, and more are waiting to see. However, with the development of LED technology in the direction of smaller and brighter, the focus of CSP technology is gradually increasing, and the progress of key process technologies of chip, solder and substrate is the second half of last year. We also continue to receive inquiries about CSP, and the degree of customer acceptance has been greatly improved. Tan Gang, Vice President of Sales of Donghao Optoelectronics The application side has always had a misunderstanding of CSP performance and difficulty in use. After nearly two years of market precipitation, more and more customers are designing products for the characteristics of CSP, such as: CSP products in the automotive industry at the end of 2016 Batch use is the application end for CSP small size, high density illumination, high temperature resistance, high stability. With the in-depth understanding of CSP products, more and more customers will choose CSP in product design. Zheng Haibin, Marketing Director of Zhaochi Energy Saving Lighting Regarding CSP, everyone should pay attention to the design and selection of products. If it is to reduce the cost, it is not advisable. Packaging vendors and application vendors are now aware of this issue. General Manager of Xingguangbao, Zhu Xihe Many people think that the use of CSP LEDs can save the assembly process. The chip factory can directly interface with the lamp factory, greatly simplifying the production process and reducing the cost. It seems that the packaging process will be eliminated from now on, and the packaging factory will have no living path. But this is not the case. At present, the most mainstream packaging forms are SMD, POWER and COB. The CSP package is the most popular package, which means it can replace the current mainstream LED2835, 3528, 5050 and so on. Therefore, it does not affect the entire packaging industry, but the current mainstream form of the packaging industry. CSP belongs to the technical update of the chip link, not to the packaging world. Liao Yonghong, Vice President of Sales of Keyi Star CSP does not rely on cost or cost-effectiveness to gain market share, but should develop appropriate applications based on its characteristics, reflecting the value of CSP. With the attempts of some customers to promote the promotion of CSP lamp manufacturers, end customers can develop new applications based on the characteristics of CSP, replacing the market price competition. What are the technical difficulties in making a CSP module? Zhang Wei, Manager of Huacan Optoelectronics Flip Technology Department From the current point of view, the CSP technology routes of various domestic and foreign manufacturers are not the same. CSP is still a new technology in the LED field, and each manufacturer has its own understanding of the market demand. At the same time, the demand for CSP at the application end is still in a relatively early state, and everyone understands that it is difficult to achieve uniformity. However, with the increase in market demand, after being applied in various market segments, it is believed that standards will eventually form and move toward a relatively unified state. Only in this way can we reduce costs and further expand applications. Yuan Yikai, director of Guoxing Optoelectronics R&D Center I think this is a common law in the market. When new products are put into the market, the maturity of technical equipment, corresponding supporting equipment, and terminal applications is not enough. It is difficult to form a unified standard quickly. CSP products are no exception. In the future, with the further expansion of the CSP market and the maturity of application technology, there will naturally be enterprise giants that lead the industry standard. Tan Gang, Vice President of Sales of Donghao Optoelectronics If the CSP product is used as a standard package size, it is designed to be easier for customers to assemble into modules according to their own needs. Now more is the packaging company to take CSP as its goal, the purpose is to better serve customers and make it easier for customers to use CSP. Zheng Haibin, Marketing Director of Zhaochi Energy Saving Lighting If the CSP can be made into a module, this will be a good way to solve the design threshold problem. General Manager of Xingguangbao, Zhu Xihe Due to the small size of the CSP, the placement requirements for the CSP are very high, which makes the production of the CSP integrated module more difficult. It is necessary to develop a high-precision placement device that meets the requirements for the CSP chip process design. Liao Yonghong, Vice President of Sales of Keyi Star There are two main purposes for making a CSP module. On the one hand, it provides application ideas to various vendors, and on the other hand, it proves that CSP is not as difficult to patch as it is supposed to be. In fact, CSP eventually returned to the light source factory, and the back-end customers to do the circuit design and application. Maybe one day there will be a so-called CSP standard device, but that is definitely a product produced after market precipitation. Is CSP a price or a quantity first? Zhang Wei, Manager of Huacan Optoelectronics Flip Technology Department I think it is still necessary to look at the comprehensive effect, because for a company, on the basis of guaranteeing a certain profit, it can be beneficial to the healthy development of itself and the industry. On the other hand, only a sufficient amount can be formed to promote a new technology to quickly penetrate into the application, and to expand the scope of use and market size. At the same time, there is a sufficient amount to reduce the cost of related materials and reduce their own production costs. Therefore, from two aspects, the first quantity or the first price is a comprehensive effect. Yuan Yikai, director of Guoxing Optoelectronics R&D Center The two conditions of price and output are mutually reinforcing. There is a quantity that can promote the cost reduction and thus have a better profit margin, and a good profit margin can accelerate the start of production. In the early stage of market implementation, it is crucial to find a better balance between price and output. Of course, both in terms of price and output, this is based on the premise that the quality of the product is accepted by the market. Guoxing Optoelectronics has always insisted on putting product quality at the forefront of production and production, only to bring better product experience to our customers. Tan Gang, Vice President of Sales of Donghao Optoelectronics I believe that if a good product has an advantage in price, it will play a positive role in promoting the market. Dongpu Optoelectronics will continue to increase the brightness for CSP products, and the downward adjustment of prices will be the key implementation direction to promote the increase of CSP in the market. General Manager of Xingguangbao, Zhu Xihe The initial price of any new product will be high due to the investment in development costs and the non-universality of related accessories and auxiliary equipment. This is inevitable. Therefore, when the product is recognized by the high field, it will be followed by the quantity. After the quantity reaches a certain level, the price of all the auxiliary materials and auxiliary equipment can be lowered to reduce the cost of the product. Liao Yonghong, Vice President of Sales of Keyi Star A new product is important to reflect its application value, not just entangled in the first quantity or the first price, because no matter whether the quantity or the first price is a business with almost no gross profit, such a Management is not conducive to the sound development of enterprises or industries.
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