Haruhiko Yamaguchi

Title: Haruhiko Yamaguchi: Innovator in Aluminum and Silicon Nitride Technologies

Introduction

Haruhiko Yamaguchi, a distinguished inventor residing in Yokohama, Japan, has made significant contributions to the fields of semiconductor materials and circuit board technologies. With a portfolio of three patents, his innovations focus primarily on aluminum nitride and silicon nitride substrates, showcasing his expertise in enhancing insulation characteristics and heat dissipation properties.

Latest Patents

Yamaguchi's latest patents include groundbreaking developments such as an aluminum nitride substrate, an aluminum nitride circuit board, and a semiconductor apparatus, alongside a method for manufacturing high-performance aluminum nitride substrates. His aluminum nitride substrate features a polycrystalline structure enriched with aluminum nitride grains and complex oxide grains that contribute to its impressive insulation and heat dissipating abilities. This substrate displays a bending strength of over 400 MPa and maintains a volume resistivity exceeding 10^9 m.

In addition, he has developed a silicon nitride ceramic substrate that is designed to enhance the operational reliability of power modules. This innovative substrate consists of a silicon nitride sintered body with a maximum pore size of 0.3 μm, thermal conductivity of at least 50 W/mK, and a bending strength of 500 MPa. Such characteristics enable it to suppress leak current generation effectively, ensuring higher performance and reliability in electronic applications.

Career Highlights

Throughout his career, Yamaguchi has contributed to leading companies, including Toshiba Corporation and Toshiba Materials Co., Ltd. His experience in these organizations has allowed him to refine his skills and deepen his understanding of material science and semiconductor engineering, paving the way for his innovative creations.

Collaborations

Yamaguchi has collaborated with talented individuals such as Takayuki Naba and Michiyasu Komatsu. These professional relationships have been pivotal in driving forward his research and development efforts, facilitating knowledge exchange and fostering innovation in the semiconductor industry.

Conclusion

Haruhiko Yamaguchi's innovative spirit and commitment to advancements in semiconductor technology underscore the importance of research and development in achieving significant breakthroughs. His exceptional patents in aluminum and silicon nitride substrates not only reflect his technical proficiency but also the potential for improving electronic devices and power modules in the future. His work inspires the next generation of inventors and reinforces the value of innovation in enhancing technology.