Hiroaki Iijima

Title: Hiroaki Iijima: Innovator in Surface Acoustic Wave Technology

Introduction

Hiroaki Iijima is a notable inventor based in Mitaka, Japan. He has made significant contributions to the field of surface acoustic wave (SAW) devices. His innovative approach has led to advancements in the manufacturing processes of these devices.

Latest Patents

Hiroaki Iijima holds 1 patent for a method of making a surface acoustic wave device. This patent describes a technique where a SAW chip is flip-chip mounted in a package. The package features a window that faces an electrode-formed surface of the SAW chip. After the chip is mounted, the in-process item is inserted into reactive ion etching equipment with the window open. The substrate or electrodes of the SAW chip are then etched by an etching gas introduced into the ion etching equipment. This method allows for films to be formed on the electrode formation surface instead of etching. Consequently, variations in characteristics stemming from manufacturing process variations can be effectively suppressed.

Career Highlights

Hiroaki Iijima has been associated with Japan Radio Co., Ltd., where he has applied his expertise in developing advanced technologies. His work has been instrumental in enhancing the performance and reliability of SAW devices.

Collaborations

Hiroaki has collaborated with notable colleagues, including Hiromi Yatsuda and Nobuhiro Mineshima. Their combined efforts have contributed to the advancement of technology in their field.

Conclusion

Hiroaki Iijima's innovative contributions to surface acoustic wave technology have made a significant impact in the industry. His patent reflects a commitment to improving manufacturing processes and device performance. His work continues to influence the development of advanced technologies in Japan and beyond.