MEMS and its applications
MEMS technology uses micro-manufacturing technology, integrating sensors, mechanical components, actuators and electronic components on the basis of a common silicon chip. MEMS is usually regarded as a system on chip (SoC), which allows intelligent products to be developed and enter many secondary markets, including automotive, health care, mobile phones, biotechnology, consumer products and other fields provide the solution. According to data from the electronics industry market research and information networks, the average annual growth rate of MEMS is higher than 20% and is expected to exceed US $ 10 billion in 2010. MEMS technology has been regarded as one of the most promising technologies in the next century.
MEMS has many applications and is accepted by more and more products. Some common application areas of MEMS include automotive, biotechnology and medical, and consumer electronics. MEMS is also used in a large number of acoustic wave duplexers (BulkAcousTIcWaveduplexer) and filters, microphones, MEMS autofocus actuators, pressure sensors, MEMS pico projectors, and even MEMS gyroscopes.
MEMS company
Globally, MEMS products are developed by some American and Asian companies, including STMicroelectronics (ST), Analog Devices (ADI), Hewlett-Packard (HP), Texas Instruments (TI), and Memsic. The following will introduce the current status of various manufacturers and their main MEMS products.
STMicroelectronics is one of the largest MEMS manufacturers, offering a wide selection of single-axis and multi-axis gyroscopes, various full-scale intervals, suitable for image stabilization of digital cameras and digital video recorders, and improving user experience in gaming applications . ST also offers 3-axis gyroscopes, which can accurately measure the angular velocity along three orthogonal axes. In addition, STM has expanded its product portfolio with next-generation micromotor acoustic devices. The innovative MEMS microphone uses Omron's sensor technology, which can greatly improve the sound quality, has excellent reliability and robustness, and is very cost-effective for existing / emerging audio applications, such as mobile phones, wireless devices and handhelds Game consoles, etc. The point is that MEMS microphones can be made smaller than the smallest electret condenser microphone (electretscondensermicrophone), and are less sensitive to temperature changes, mechanical vibrations and electromagnetic interference.
ADI also provides analogue and digital omnidirectional MEMS microphones. Recently, ADI and Infineon Technologies agreed to jointly develop the next generation of automotive airbag safety systems. This ADI-Infineon cooperation plan will ensure the coordination of the corresponding product development blueprints of the two companies and the interoperability of their respective sensors and chipsets. This cooperation will also accelerate the development of advanced airbag systems, providing a complete design platform for security system suppliers and OEMs, thereby achieving a reliable, cost-effective and easy-to-use advanced airbag solution.
HP recently introduced an inertial detection technology (inerTIalsensingtechnology) that can be used to develop digital MEMS accelerometers that can be used as high-level sensors. HP expects that the technology will increase the sensitivity of the chip by 1,000 times compared to the mass products on the market today. This sensor is based on the company's first MEMS technology that has been commercialized in its printer cartridges.
In addition, TI's digital light processor (digital light processor (DLP)) technology provides a development platform and chipset for innovative applications that require light processing and light steering. The company's MEMS technology provides a reliable single-element analog mirror (singleelementanalogmirror) for light steering applications. Its highly reflective MEMS surface is up to 9 square millimeters, simplifying the need for driving, so TI's AnalogMirrors has become a flexible system design. Ideal choice. TI's AnalogMirrors can be used to accurately position and control the laser beam, while minimizing the loss of optical power, supporting various beam rotation applications, such as image and display, optical network, free space optics, object detection, and laser printing.
Memsic, another famous company, has launched a variety of high-performance accelerometers. Due to the requirements of the National Highway Traffic Safety Administration (NHTSA), by 2012, all cars, trucks and buses on the US market must be equipped with a vehicle stability control system (VehicleStabilityControl, VSC), and the European Union has confirmed that it will implement a similar Requirements, millions of Memsic acceleration sensors have been deployed in cars and trucks with VSC. Now, engineering teams dedicated to meeting government VSC requirements can use fully automotive and road certified sensor technology compatible with Serial Peripheral Interface (SPI) to design next-generation VSC systems.
Market outlook
Obviously, MEMS has laid a foundation in various applications in our daily life today. The main driving force for its popularity comes from low cost and small size, which can make smaller, lighter and cheaper final products. But it is not bright in front of MEMS. One challenge is packaging, because of the diversity of MEMS devices and the different environments each is exposed to. Packaging and testing can easily double the cost. Without affecting product performance, research on standardized and cheaper packaging has become the main focus of MEMS design. On today's earth, MEMS manufacturers have invested a lot of research and development efforts to try to strengthen their position in the packaging process and develop new special packages for various new devices. The current great progress and engineering progress give us a newer understanding of MEMS or SoC. For design engineers, this is indeed a challenging and exciting era!
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