Hiroki Tsuma

Title: Hiroki Tsuma: Innovator in Silicon Carbide Semiconductor Technology

Introduction

Hiroki Tsuma is a prominent inventor based in Okazaki, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of silicon carbide devices. With a total of 5 patents to his name, Tsuma's work has advanced the capabilities of semiconductor materials.

Latest Patents

One of Tsuma's latest patents is for a silicon carbide semiconductor device that includes a side silicide layer and a method for manufacturing the same. This innovative device features a silicon carbide semiconductor layer that comprises a silicon carbide single crystal, with a main surface, a rear surface, and a side surface formed by a cleavage plane. The device also includes a modified layer that alters the atomic arrangement structure of the silicon carbide near the rear surface. Additionally, the side silicide layer, which is a compound of a metal element and silicon, is strategically placed on the side surface of the semiconductor layer.

Another notable patent involves a manufacturing method for a semiconductor device. This method begins with a semiconductor wafer made of a material harder than silicon. A roughened layer is created by grinding the wafer's second surface, followed by the formation of a vertical crack in the surface layer. After removing the roughened layer, a rear surface electrode is formed, and the wafer is cleaved into multiple pieces using the vertical crack as a guide.

Career Highlights

Hiroki Tsuma has worked with notable companies in the automotive and electronics sectors, including Toyota Motor Corporation and Denso Corporation. His experience in these organizations has allowed him to apply his innovative ideas in practical applications, contributing to advancements in semiconductor technology.

Collaborations

Throughout his career, Tsuma has collaborated with talented individuals such as Takashi Kuno and Toshitaka Kanemaru. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Hiroki Tsuma's contributions to silicon carbide semiconductor technology highlight his role as a leading inventor in the field. His innovative patents and collaborations with industry professionals underscore the impact of his work on the future of semiconductor devices.