Tatsuo Ohka

Title: Innovations by Tatsuo Ohka in Semiconductor Technology

Introduction

Tatsuo Ohka is a notable inventor based in Kyoto, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the area of defect inspection. His work has implications for the production quality of semiconductor devices, which are essential in modern electronics.

Latest Patents

Tatsuo Ohka holds a patent for a "Defect inspection apparatus and method." This innovative apparatus is designed to determine the acceptable condition of a reticle or mask member with a pattern area to be developed on a semiconductor device. The method involves identifying a non-pattern area and designating an inspection target area within it. Light is then scanned across this target area, and the detected signals are processed to assess the status of foreign matter, including its size and location. These findings are compared with predetermined values to ascertain the acceptability of the mask for ongoing production.

Career Highlights

Ohka is associated with Horiba, Ltd., a company known for its advanced measurement and analysis technologies. His work at Horiba has allowed him to focus on enhancing the quality control processes in semiconductor manufacturing.

Collaborations

Tatsuo Ohka has collaborated with notable colleagues such as Teruhiko Ikeda and Toyoki Kanzaki. Their combined expertise has contributed to advancements in the field of semiconductor inspection technologies.

Conclusion

Tatsuo Ohka's innovations in defect inspection for semiconductor devices highlight his significant role in improving production quality. His contributions continue to influence the semiconductor industry positively.