Nobuaki Umemura

Title: Nobuaki Umemura: Innovator in Semiconductor Technology

Introduction

Nobuaki Umemura is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of semiconductor technology, particularly through his innovative designs and methods.

Latest Patents

Umemura holds a patent for a semiconductor device and method of manufacturing the same. This invention focuses on a semiconductor device that incorporates an LDMOSFET, where the source electrode is positioned at the back surface. To minimize electric resistance between the source contact region on the top surface and the back surface source electrode, a poly-silicon buried plug is utilized. This plug extends from the upper surface into a P-type substrate through a P-type epitaxial layer and is heavily doped with boron. The design addresses potential leakage failures by inducing dislocation in the mono-crystalline silicon region surrounding the poly-silicon buried plug. The semiconductor device features a silicon-based plug that extends through the boundary surface between two semiconductor layers with differing impurity concentrations, ensuring that at least the interior of the plug is a poly-crystalline region.

Career Highlights

Umemura is currently employed at Renesas Electronics Corporation, where he continues to advance semiconductor technology. His work has been instrumental in developing efficient and reliable semiconductor devices that meet modern technological demands.

Collaborations

Umemura has collaborated with notable colleagues, including Hiroyuki Arie and Nobuyoshi Hattori, contributing to various projects that enhance semiconductor innovation.

Conclusion

Nobuaki Umemura's contributions to semiconductor technology through his patent and work at Renesas Electronics Corporation highlight his role as a key innovator in the field. His advancements continue to influence the development of efficient semiconductor devices.