Katuya Ishikawa

Title: Katuya Ishikawa: Innovator in Solid-State Image Pickup Devices

Introduction

Katuya Ishikawa is a notable inventor based in Kyoto, Japan. He has made significant contributions to the field of solid-state image pickup devices. His innovative methods have paved the way for advancements in imaging technology.

Latest Patents

Katuya Ishikawa holds a patent for a "Method of manufacturing a solid-state image pickup device." This patent describes a process where a dielectric film is formed on a P-type silicon substrate. A specified resist pattern is then created on the dielectric film, followed by the implantation of a phosphorus ion beam using this resist pattern as a mask. After removing the resist pattern, heat treatment is applied to form a photo diode at a depth of about 1 µm. The process continues with the formation of another resist pattern, boron ion implantation, and the creation of a channel stopper region. The dielectric film is subsequently removed, and a new dielectric film is formed on the silicon substrate. A stacked oxide film is then created in regions not designated for the photo diode. Using this stacked oxide film as a mask, a boron ion beam is implanted, resulting in a P-type diffusion layer on the photo diode's surface, which reduces leak current. Finally, a fluorine ion beam is implanted across the silicon substrate, providing a diffusion layer that lowers interface state density and suppresses implantation defects.

Career Highlights

Katuya Ishikawa is associated with Matsushita Electronics Corporation, where he has contributed to various innovative projects. His work has been instrumental in enhancing the performance and reliability of imaging devices.

Collaborations

Katuya Ishikawa has collaborated with Genshu Fuse, working together on advancements in imaging technology.

Conclusion

Katuya Ishikawa's contributions to the field of solid-state image pickup devices highlight his innovative spirit and dedication to technological advancement. His patent reflects a significant step forward in improving imaging technology, showcasing his expertise and commitment to excellence.