Makoto Iijima

Title: The Innovations of Makoto Iijima

Introduction

Makoto Iijima is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 14 patents. His work has been instrumental in advancing the capabilities of semiconductor devices and manufacturing processes.

Latest Patents

One of Iijima's latest patents is for a semiconductor device that includes a board, a semiconductor element mounted on one of the main surfaces of the board, a plurality of passive elements provided in the vicinity of the semiconductor element, and a heat radiation plate mounted above the board. This heat radiation plate is connected to the rear surface of the semiconductor element via a heat conductive material. Notably, the surface roughness of the heat radiation plate, which comes in contact with the heat conductive material, is non-uniform across the entire surface.

Another significant patent involves a method of forming an insulative substrate with conductive filled vias. This method includes adhering an adhesive layer to an organic insulation substrate to form a first part, creating a via hole that penetrates the first part, and forming a conductive metal film that covers the via hole on one side of the first part. An electrolytic plating process is then used to form a metal via member within the via hole and to create an inter-layer wire. The process continues with the removal of the conductive metal film while retaining the inter-layer formed by the electrolytic plating process.

Career Highlights

Throughout his career, Makoto Iijima has worked with notable companies such as Fujitsu Corporation and Kawasaki Electric Wire Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.

Collaborations

Iijima has collaborated with several talented individuals in his field, including Tetsushi Wakabayashi and Toshio Hamano. These collaborations have contributed to the success of his projects and the advancement of technology in the semiconductor industry.

Conclusion

Makoto Iijima's contributions to semiconductor technology through his patents and collaborations highlight his role as a leading inventor in the field. His innovative approaches continue to influence the industry and pave the way for future advancements.