Mitsuru Yoshikawa

Title: Mitsuru Yoshikawa: Semiconductor Device Inventor

Introduction

Mitsuru Yoshikawa is an inventor associated with semiconductor device technologies. Based in Tsuchiura, Japan, he is credited with 4 patents. His work includes inventions concerning semiconductor structures, transistor design, and manufacturing methods.

Latest Patents

“Semiconductor Device and Method for Fabricating the Same” describes a device with a substrate and trench defining an active region. An isolation layer fills the trench, while a pro-oxidant region at its upper corner promotes oxidation during formation of the gate insulation layer. A gate conductive layer is formed above that insulation layer.

“Semiconductor Device and Its Manufacturing Method” addresses transistor designs that balance high-voltage capability with miniaturization for low-voltage operation. The disclosed structure uses inner and outer sidewall insulating films as masks to control the offset in a high-breakdown-voltage transistor. For a low-voltage transistor, the inner sidewall insulating film alone serves as the mask, allowing its offset to be controlled separately.

Career Highlights

Yoshikawa’s listed company affiliations include Texas Instruments Corporation and Magnachip Semiconductor, Inc. His patent work reflects a focus on semiconductor fabrication and transistor structures.

Collaborations

His listed coworkers include Hirofumi Komori and Hiroshi Yamamoto, reflecting professional connections in the semiconductor field.

Conclusion

Mitsuru Yoshikawa’s patent portfolio highlights semiconductor device innovations aimed at improving fabrication and managing transistor performance across different voltage requirements.