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Title: Hajime Matsuhashi: Innovator in Humidity Sensing Technology
Introduction
Hajime Matsuhashi is a notable inventor based in Nagoya, Japan. He has made significant contributions to the field of humidity sensing technology, holding 2 patents that showcase his innovative approach to sensor design.
Latest Patents
Matsuhashi's latest patents include a capacitance type humidity sensor and a manufacturing method for the same. This humidity detecting sensor features two electrodes that oppose each other, creating a capacitor on a silicon substrate with a silicon oxide film on its surface. A moisture-sensitive film covers the electrodes, with a silicon nitride film interposed to protect them from moisture. The capacitance between the electrodes changes according to ambient humidity, and a switched capacitor circuit processes the signal indicative of this change. His other patent involves a capacitive moisture sensor made from a silicon-on-insulator (SOI) substrate. This design utilizes a trench to separate the thick silicon layer, enhancing capacitance sensitivity without increasing the sensor's size or complicating the fabrication process.
Career Highlights
Matsuhashi has worked with Denso Corporation, where he applied his expertise in sensor technology. His work has contributed to advancements in the automotive and electronics industries, particularly in developing reliable humidity sensors.
Collaborations
Matsuhashi has collaborated with notable individuals such as Inao Toyoda and Kazushi Asami, further enhancing his contributions to the field.
Conclusion
Hajime Matsuhashi's innovative work in humidity sensing technology has established him as a key figure in the industry. His patents reflect a commitment to advancing sensor technology, making significant strides in improving moisture detection methods.