Katsumi Morii

Title: Innovations of Katsumi Morii

Introduction

Katsumi Morii is a prominent inventor based in Hitachinaka, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 8 patents. His work focuses on improving semiconductor devices and manufacturing methods, showcasing his expertise and innovative spirit.

Latest Patents

Morii's latest patents include advancements in semiconductor devices and methods for their manufacturing. One notable patent describes a semiconductor device that eliminates the need for high fillability through a simple process. This device features a high breakdown voltage lateral MOS transistor, which includes a source region and a drain region on the surface of a semiconductor substrate. A trench surrounds the transistor, and an insulating film is formed over the transistor and in the trench, creating an air-gap space. Additionally, contact holes are made in an interlayer insulating film to reach the source and drain regions of the transistor.

Another significant patent involves a first concave portion extending inside a semiconductor substrate from its main surface. An insulating film is formed over the main surface and the walls of the concave portion, covering the element and creating a capped hollow. A first hole portion is formed in the insulating film to reach the hollow, while a second hole portion connects to the conductive portion. Both hole portions are created through the same etching treatment, demonstrating Morii's innovative approach to semiconductor design.

Career Highlights

Katsumi Morii is currently employed at Renesas Electronics Corporation, where he continues to develop cutting-edge semiconductor technologies. His work has significantly impacted the industry, leading to advancements that enhance the performance and efficiency of semiconductor devices.

Collaborations

Throughout his career, Morii has collaborated with notable colleagues, including Yoshitaka Otsu and Kazuma Onishi. These collaborations have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Katsumi Morii's contributions to semiconductor technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of the complexities involved in semiconductor manufacturing, and his work continues to influence the industry positively.