Katsufumi Tomihisa

Title: Innovations of Katsufumi Tomihisa

Introduction

Katsufumi Tomihisa is a prominent inventor based in Kobe, Japan. He has made significant contributions to the field of display technology and semiconductor devices. With a total of 17 patents to his name, his work has had a considerable impact on the industry.

Latest Patents

His latest patents include an Al alloy film for display devices, a display device itself, and a sputtering target. The Al alloy film is designed to be directly connected to a conductive oxide film on a substrate. This innovative film comprises Ge in an amount of 0.05 to 0.5 at %, along with Gd and/or La in a total amount of 0.05 to 0.45 at %. The invention ensures high adhesion between the conductive oxide film and the Al alloy film, resulting in low contact resistivity and excellent dry etching properties. Additionally, he has developed a wiring structure that achieves excellent low-contact resistance by eliminating the need for a barrier metal layer between a Cu alloy wiring film and a semiconductor layer.

Career Highlights

Throughout his career, Katsufumi Tomihisa has worked with notable companies such as Kobe Steel, Ltd. and Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.). His expertise in materials science and engineering has led to advancements in various technologies.

Collaborations

He has collaborated with esteemed colleagues, including Toshihiro Kugimiya and Hiroshi Gotoh, to further enhance his research and development efforts.

Conclusion

Katsufumi Tomihisa's innovative contributions to display technology and semiconductor devices have established him as a key figure in his field. His patents reflect a commitment to advancing technology and improving device performance.