Yoshinori Otsuka

Title: Innovations of Yoshinori Otsuka

Introduction

Yoshinori Otsuka is a notable inventor based in Okazaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on enhancing the manufacturing processes and functionalities of semiconductor devices.

Latest Patents

One of his latest patents is a method for manufacturing a semiconductor substrate that includes an epitaxial film in a trench. This innovative process involves forming a trench in a silicon substrate and subsequently creating an epitaxial film both on the substrate and within the trench. After etching a portion of the epitaxial film around the trench's opening, another layer of epitaxial film is applied, ensuring that the trench is completely filled. The final step involves flattening the surface of the substrate.

Another significant patent is for a micro-heater and airflow sensor. This device features a micro-heater with a film structure designed to minimize warpage, even when the film's thickness is increased. The airflow sensor comprises a monocrystalline silicon substrate with a hollow portion, a thin film heater positioned above this hollow area, and a temperature sensor. The heater's structure includes a lower thin film, a heater layer, and an upper thin film, which are symmetrically laminated to balance internal stresses and enhance mechanical strength.

Career Highlights

Yoshinori Otsuka has worked with prominent companies such as Denso Corporation and Nippondenso Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technologies and innovations.

Collaborations

Throughout his career, Otsuka has collaborated with notable colleagues, including Shoichi Yamauchi and Yasushi Urakami. These partnerships have likely fostered a creative environment that has led to significant advancements in their respective fields.

Conclusion

Yoshinori Otsuka's contributions to semiconductor technology through his innovative patents and collaborations highlight his importance as an inventor. His work continues to influence advancements in the industry, showcasing the impact of dedicated research and development.