MEMS manufacturing is the bottleneck of the industry's continuous development or the realization of its potential as a critical path? ] The MEMS industry has huge potential for growth. Is MEMS manufacturing the bottleneck of the sustainable development of the industry or is it the key path to realize the potential? According to the consulting report of Mymes, the long development cycle, the numerous manufacturing platforms, and the high quotation brought about by the use of less during research and development are the main stumbling blocks to hinder the rapid development of new products. Understanding the special characteristics of MEMS manufacturing, and knowing the choice of many ecosystems, will help you to clear the development path in the face of challenges and thus develop distinctive new products more quickly.
MEMS devices have a wide variety of different requirements. A device is a set of process flow, which is the root cause of MEMS manufacturing faced with huge challenges. Although a single approach is not suitable for all companies, using different company expertise to form an ecosystem is one of the best ways to address these challenges. However, integrating ecosystems is difficult because the entire supply chain involves multiple partners. This ecosystem can only work when all members of the supply chain follow the same basic design rules and a common top-level technology development path. Since it takes time and effort to establish common rules, many large and medium-sized companies are more inclined to build their own supply chains at all costs. In contrast, emerging companies cannot support large capital investment in new equipment and will inevitably find that all equipment and a variety of MEMS process foundries are more attractive options. When you embark on a MEMS manufacturing journey, how do you choose to stay ahead?
Finding the right ecosystem partner
In MEMS manufacturing, there are many alternative technologies and process integration is difficult. Each unique skill is the key to guaranteeing the completion of special product development on time. If you cannot establish a supply chain, you must find ecosystem partners that match and complement your technology (see table below).
Ecosystem selection is related to firm expertise: 1=perfect match, 2=match, 3=match match
You must also understand the added value of your company to the final product or other partner in the ecosystem. Most importantly, partners must trust each other. Lack of mutual trust will lead to insufficient information sharing and knowledge accumulation, which will lead to slow problem resolution and/or excessive development cycle time.
Option 1: Have a Complete Supply Chain
Although few companies can support Option 1 – having the entire supply chain (such as Bosch or STMicroelectronics), the benefits are many: all proprietary technologies are owned by the company, intellectual property is easily protected, and supply chain management is simpler. . However, this model requires huge investments in equipment. In the long run, great efforts and money will be spent on every aspect of the supply chain to maintain technological competitiveness.
Option 2: Outsourcing ASIC
You may choose to outsource only ASIC (application-specific integrated circuit) manufacturing, and may also include ASIC design and assembly, while other supply chains are relatively complete. This option requires the company to have a professional advantage in MEMS technology, can benefit from MEMS manufacturing process control, and then be freed from the limitations of the fabless model. This option also ensures more intellectual property protection than its own foundry.
Although the disadvantages of Option 2 are similar to those of having a complete supply chain, they can be part of the supply chain by outsourcing MEMS chips, or they can be outsourced to wafer suppliers for some development tasks. These wafer suppliers can implement embedded on wafers. Structure and/or multilayer wafer stack packages. Outsourcing will shorten the process, and even if the demand increases, there is no need to increase capital investment. The third way to outsource is to outsource difficult or incompatible steps. The benefits of doing so are many, such as getting better materials, including special polymers, these polymers are usually more expensive than silicon; like precious metals (gold or platinum), the film deposition process may cause contamination problems.
Option 3-4: Factory Model
Although more companies still have a complete supply chain or outsource ASICs and will not outsource to MEMS foundries, outsourcing to MEMS foundry solutions is still a good option for cost-conscious companies. If you can't afford the large investment in new equipment, advanced materials, or the need to quickly scale up due to a short product life cycle, you can try to choose the foundry model. There are two main modes: outsourcing to pure MEMS foundries (option 3) and outsourcing MEMS manufacturing and design to MEMS foundries (option 4). Option 3 does not provide design services, and the foundry itself does not have design capabilities. For companies with MEMS design capabilities, Option 3 is a good choice if there is no MEMS production line. However, if your company lacks an in-depth understanding of MEMS design, Option 4 will give you design support and may also provide intellectual property.
Operators are inspecting silicon wafers to ensure compliance with customer quality and performance specifications
Option 5: Purchasing off-the-shelf MEMS chips
Option 5 is to purchase an off-the-shelf MEMS chip as the basis for the components. If your company has high value or system-level expertise in the value chain, this is a reliable choice.
In the future, participants in the MEMS ecosystem will win by providing a combination of design library development and MEMS process design suite support, the same rules as in the current IC industry. This winning method will greatly shorten the MEMS product design cycle - from concept to process development and finished product, and will eventually change the game rules of MEMS manufacturing.
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