Hiroyuki Tomatsu

Title: Hiroyuki Tomatsu: Innovator in Semiconductor Technology

Introduction

Hiroyuki Tomatsu is a prominent inventor based in Atsugi, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 12 patents. His work focuses on enhancing the performance and reliability of semiconductor devices.

Latest Patents

One of his latest patents is a method of manufacturing a semiconductor device that features a highly reliable transistor. This transistor includes an oxide semiconductor and boasts high field-effect mobility, with minimal variation in threshold voltage. By utilizing this transistor, a high-performance semiconductor device can be achieved, which has previously been challenging to realize. The oxide semiconductor film in this invention contains multiple elements, such as indium, tin, zinc, and aluminum, and is formed while the substrate is heated. Additionally, oxygen is supplied to the oxide semiconductor film during the manufacturing process to reduce oxygen deficiency, which generates carriers. Another notable patent involves a manufacturing method for a thin film transistor that includes an oxide semiconductor film. This method aims to achieve a positive threshold voltage that is as close to 0 V as possible, ensuring optimal performance.

Career Highlights

Hiroyuki Tomatsu is associated with the Semiconductor Energy Laboratory Co., Ltd., where he continues to innovate in semiconductor technology. His expertise and dedication have led to advancements that significantly impact the industry.

Collaborations

He has collaborated with notable coworkers, including Junichiro Sakata and Masahiko Hayakawa, contributing to various projects and innovations in the semiconductor field.

Conclusion

Hiroyuki Tomatsu's contributions to semiconductor technology through his patents and collaborations highlight his role as a leading inventor in the industry. His work continues to pave the way for advancements in high-performance semiconductor devices.