Susumu Iesaka

Title: Susumu Iesaka: Innovator in Power Semiconductor Technology

Introduction

Susumu Iesaka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of power semiconductor technology, holding a total of 6 patents. His innovative work has paved the way for advancements in electronic devices and systems.

Latest Patents

Iesaka's latest patents include the development of a reverse conducting gate-turnoff thyristor. This device features a switching device section, a diode section, and an isolating section that is strategically placed between the two. The isolating section is designed with an impurity layer that is formed by controlling impurity diffusion, ensuring that its impurity concentration is lower than that of both the switching device and diode sections. Another notable invention is the crimp-type power semiconductor device, which incorporates a semiconductor substrate with a lifetime-controlled region in the shape of a ring. This design shortens the lifetime of minority carriers in the region, enhancing the device's performance.

Career Highlights

Throughout his career, Iesaka has worked with esteemed companies such as Kabushiki Kaisha Toshiba and Tokyo Shibaura Denki Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the semiconductor industry.

Collaborations

Iesaka has collaborated with notable colleagues, including Michiaki Hiyoshi and Takashi Fujiwara. Their combined expertise has fostered an environment of innovation and creativity in their projects.

Conclusion

Susumu Iesaka's contributions to power semiconductor technology are invaluable. His patents and collaborations reflect his dedication to advancing the field and improving electronic devices. His work continues to inspire future innovations in the industry.