Shigeru Yokoyama

Title: Shigeru Yokoyama: Innovator in Semiconductor Technology

Introduction

Shigeru Yokoyama is a prominent inventor based in Hachioji, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on enhancing the reliability and efficiency of semiconductor devices.

Latest Patents

Yokoyama's latest patents include a semiconductor device having an alignment post electrode and a method for manufacturing the same. This semiconductor device features a substrate with multiple formation regions and an alignment mark formation region. The design includes a plurality of post electrodes and a unique alignment post electrode that is smaller in number than the post electrodes in each formation region.

Another notable patent is for a method for forming a bump electrode for a semiconductor device. This structure comprises an aluminum alloy electrode pad, an insulating oxide layer, an under-bump layer made of a titanium-tungsten alloy, and a gold bump electrode. The titanium-tungsten alloy serves as both a barrier and bonding metal, ensuring a high-reliability bump electrode structure that provides sufficient bonding strength between internal and external electrodes.

Career Highlights

Yokoyama is currently employed at Casio Computer Co., Ltd., where he continues to innovate in semiconductor technology. His work has been instrumental in advancing the capabilities of semiconductor devices, making them more efficient and reliable.

Collaborations

Throughout his career, Yokoyama has collaborated with notable colleagues, including Norihiko Kaneko and Shinji Wakisaka. These collaborations have contributed to the development of cutting-edge technologies in the semiconductor field.

Conclusion

Shigeru Yokoyama's contributions to semiconductor technology through his patents and work at Casio Computer Co., Ltd. highlight his role as a key innovator in the industry. His advancements continue to shape the future of semiconductor devices.