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LED innovation CSP packaging and LED light source modularization! LED can be divided into plug-in LED (also called LAMP series) and SMD LED (also called SMD series) according to its packaging type. With the rapid development of the semiconductor industry and the continuous breakthrough of packaging technology, more and more SMD series products It is widely used, especially in the field of lighting. According to the survey of China LED indoor lighting, LED outdoor lighting, and other LED application products by the High-Tech LED Industry Research Institute (GLII), at present, indoor and outdoor lighting have basically completed the complete replacement of SMD series light sources to LAMP series light sources.
The current LED packaging devices are changing rapidly, from SMD to COB, from flip chip to electrodeless packaging, which has injected a lot of new vitality into the development of the industry. As the darling of the current packaging industry, the lamp bead 2835, with a power ranging from 0.1W to 2W, can be widely used in lamps, bulbs, PAR lamps, downlights, panel lights and industrial and mining lamps. With the development of the LED lighting market and the continuous improvement of customer requirements, LED light source module products will also be continuously optimized and innovative, mainly reflected in the following points:
1. CSP package
In today's lighting market, everyone is competing to cut prices, and each packaged device is constantly forced to be promoted in order to quickly occupy the high ground of the LED lighting market. CSP packaging is born, which largely solves the customer's requirements for product cost. The CSP package has the advantages of no substrate, no wires, small size and high optical density.
The true CSP package-free CSP can be directly applied to the customer's PCB board, effectively shortening the heat flow path from the heat source to the substrate to reduce the thermal resistance of the light source. The CSP package solderless wire also solves the hidden danger of product failure caused by the customer's unsecured bonding wire, which further improves the reliability of the product. The light source size becomes smaller and the optical density becomes higher, which also simplifies the difficulty of secondary optical design.
 
In addition, because the CSP package removes the substrate / bracket and gold wire, its cost is greatly reduced. Taking the 0.5W light source as an example, the use of CSP packaging can reduce the product cost by 10% -20% on the existing basis. At present, CSP packaging Samsung has applied it to the field of TV backlight, and other major LED manufacturers have also developed related products.
 
However, CSP packaging also has its own technical barriers, such as: small CSP products, inherently insufficient mechanical strength, difficult material sorting test process, and high SMT placement technology requirements. Therefore, the application of CSP-free packaging for lamp manufacturers is a brand-new issue, and there are still many problems to be solved.
2. LED light source module-modularization
Due to the increasing market demand for lamp beads, a single high-power lamp bead has been unable to meet the requirements. In order to meet the market demand, application manufacturers use multiple lamp beads to increase the brightness of the solution, but this solution will cause excessive cost and increase in area, which is not conducive to production. Therefore, LED modules or integrated LEDs came into being and were gradually adopted Market recognition.
The characteristics of LED light source modules are:
1. Standardization-conducive to the promotion of LED lamps
At present, LED lamps have various forms, which brings great inconvenience to the standardized production and promotion of indoor LED lamps. LED module standardization For new LED lamp manufacturers entering the market, they only need to find standard LED modules on the market to design their own lamps, and there is no need to worry about mass production. Because the same standardized LED module can be selected by many manufacturers at the same time, in addition, standardized LED module products can also be easily mass-produced.
 
2. Reduce the cost of LED lighting manufacturers
The traditional light source lamp design only needs to involve optics and structure, but because LED lamp products have no standards, current LED lighting manufacturers need to employ professionals in optics and structure, as well as electronics, electrical and heat dissipation, in addition to employing optical and structural professionals. Personnel, greatly increasing the burden of LED lighting manufacturers. Moreover, this forms a high threshold for newly entered LED lamp manufacturers, which is not conducive to the development of the entire LED industry. With standardized LED light source modules, the above problems were solved.
Since the LED light source module has considered the problems of electronics, electrical, primary heat dissipation and primary light distribution, LED lamp manufacturers only need to consider the structure of the lamp, secondary heat dissipation and secondary light distribution, which reduces the threshold of the LED lamp factory. Reduce the research and development costs of LED lighting. In addition, after the LED is modularized, the application manufacturer only needs to assemble the light source, which greatly improves the production efficiency of the lamp factory and shortens the production cycle of the lamp factory.
 
3. Improve the overall performance of LED lamps
The LED light source module clearly stipulates the parameters such as output lumens, color rendering index, system luminous efficiency, color temperature continuity, and viewing angle width in different applications, and the specified parameters have reached the current high level in the industry. The quality is greatly improved and effectively guaranteed.
 
Three, a single light source-power
For the lighting market, customers are only concerned about LM / W and LM / ￥, which means higher luminous efficiency and lower price. Each packaging factory has its own magical skills to meet the market demand with 18 skills to enhance the competitiveness of its products. Since the development of LED has so far effectively improved the heat dissipation technology, a single light source can use more current, the power of the LED light source module becomes larger, the amount of cost per watt will be reduced, and the cost to customers will be reduced. The market competitiveness of the light source will become greater, and the market share will increase. In short, with the improvement of chip technology and the needs of the application market, the LED package volume will become smaller and thinner; the package power will become larger and larger, which is convenient for cost control, and provides a wider range of product design for application factories. Design space.