Yasumori Narizuka

Title: Yasumori Narizuka: Innovator in Wiring Board Technology

Introduction

Yasumori Narizuka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of wiring board technology, holding a total of 3 patents. His innovative work focuses on enhancing the reliability and efficiency of electronic devices.

Latest Patents

Narizuka's latest patents include a groundbreaking invention related to a wiring board and its production method. This invention features a wiring board that comprises a board with an electrode, coated with an insulation layer that has a hole for exposing the electrode. The wiring consists of a chromium (Cr) or titanium (Ti) layer connected to the electrode, closely contacting the insulation layer, along with a copper (Cu) layer that is in close contact with the Cr or Ti layer. Additionally, a protective film covers the wiring and includes another hole for soldering. The solder for outer connection is mounted in both holes, diffusing into the Cu layer to produce an alloy and connecting to the Cr or Ti layer. This invention aims to provide a high-density, low-cost wiring board with high reliability in connection, along with a semiconductor device and its production method.

Career Highlights

Yasumori Narizuka is currently employed at Hitachi, Ltd., where he continues to develop innovative technologies. His work has significantly impacted the electronics industry, particularly in the area of wiring boards.

Collaborations

Some of Narizuka's notable coworkers include Mitsuko Itou and Yoshihide Yamaguchi. Their collaborative efforts contribute to the advancement of technology within their field.

Conclusion

Yasumori Narizuka is a key figure in the development of wiring board technology, with a focus on enhancing the reliability and efficiency of electronic devices. His contributions through patents and collaboration with colleagues continue to shape the future of electronics.