Shigenobu Akiyama

Title: Shigenobu Akiyama: Innovator in Semiconductor Technology

Introduction

Shigenobu Akiyama is a prominent inventor based in Hirakata, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work has paved the way for advancements in integrated circuit design and manufacturing processes.

Latest Patents

One of Akiyama's latest patents is for a three-dimensional stacked LSI. This invention involves a plurality of integrated-circuit layers stacked together, each equipped with multiple circuit elements. Each circuit element has its own power terminal, which connects through interlayer via-hole wiring to the power wiring of the uppermost integrated-circuit layer. The uppermost layer's power wiring is made of a metal with low electrical resistance, such as aluminum, while the other layers use tungsten due to their exposure to high temperatures during the manufacturing process.

Another notable patent is a method of manufacturing a multilayer semiconductor device. This method involves forming a semiconductor crystallized layer through an insulative material over a semiconductor substrate. The process includes planarizing the surface of the first semiconductor layer and forming an insulative material on it, followed by the crystallization of the second semiconductor layer using an energy beam. This innovative approach enhances the fabrication of semiconductor devices.

Career Highlights

Throughout his career, Akiyama has worked with esteemed organizations such as the Agency of Industrial Science and Technology and Matsushita Electric Industrial Co., Ltd. His experience in these companies has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Akiyama has collaborated with notable colleagues, including Koichi Kugimiya and Genshu Fuse. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas in the field of semiconductor research.

Conclusion

Shigenobu Akiyama's contributions to semiconductor technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence advancements in integrated circuit design and manufacturing processes.